import { and, desc, eq, exists, gte, inArray, isNull, ne, sql } from 'drizzle-orm';

import { db } from '@/lib/db';
import { interests, interestBerths, interestTags, interestNotes } from '@/lib/db/schema/interests';
import { reminders, interestContactLog } from '@/lib/db/schema/operations';
import { clients, clientAddresses, clientContacts, clientNotes } from '@/lib/db/schema/clients';
import { berths } from '@/lib/db/schema/berths';
import { documents, documentEvents } from '@/lib/db/schema/documents';
import { berthTenancies } from '@/lib/db/schema/tenancies';
import { yachts, yachtNotes } from '@/lib/db/schema/yachts';
import { companyMemberships, companyNotes } from '@/lib/db/schema/companies';
import { tags } from '@/lib/db/schema/system';
import { userProfiles, userPortRoles, roles } from '@/lib/db/schema/users';
import { createAuditLog, type AuditMeta } from '@/lib/audit';
import { activeInterestsWhere } from '@/lib/services/active-interest';
import { getPortReminderConfig } from '@/lib/services/port-config';
import { getSetting } from '@/lib/services/settings.service';
import { NotFoundError, ConflictError, ValidationError } from '@/lib/errors';
import { emitToRoom } from '@/lib/socket/server';
import { setEntityTags } from '@/lib/services/entity-tags.helper';
import { evaluateRule } from '@/lib/services/berth-rules-engine';
import { notifyNextInLine } from '@/lib/services/next-in-line-notify.service';
import { logger } from '@/lib/logger';
import {
  getAllBerthMooringsForInterests,
  getPrimaryBerth,
  getPrimaryBerthsForInterests,
  listBerthsForInterest,
  removeInterestBerth,
  upsertInterestBerth,
  upsertInterestBerthTx,
} from '@/lib/services/interest-berths.service';
import { formatBerthRange } from '@/lib/templates/berth-range';
import { buildListQuery } from '@/lib/db/query-builder';
import { diffEntity } from '@/lib/entity-diff';
import { softDelete, restore, withTransaction } from '@/lib/db/utils';
import {
  PIPELINE_STAGES,
  STAGE_LABELS,
  canTransitionStage,
  canonicalizeStage,
  type PipelineStage,
} from '@/lib/constants';
import type {
  CreateInterestInput,
  UpdateInterestInput,
  ChangeStageInput,
  ListInterestsInput,
  SetOutcomeInput,
  ClearOutcomeInput,
} from '@/lib/validators/interests';

// ─── Types ────────────────────────────────────────────────────────────────────

// ─── Port-scope FK validator ─────────────────────────────────────────────────

// Tenant scope: every FK referenced from an interest body - clientId, berthId,
// and yachtId - must belong to the caller's port. Without this, a body-supplied
// foreign-port id would create an interest that joins through these FKs and
// surfaces foreign-tenant data on subsequent reads (clientName, berth mooring
// number, yacht ownership). assertYachtBelongsToClient still runs separately to
// enforce the additional ownership invariant.
async function assertInterestFksInPort(
  portId: string,
  fks: { clientId?: string | null; berthId?: string | null; yachtId?: string | null },
): Promise<void> {
  const checks: Array<Promise<void>> = [];
  if (fks.clientId) {
    checks.push(
      db.query.clients
        .findFirst({ where: and(eq(clients.id, fks.clientId), eq(clients.portId, portId)) })
        .then((row) => {
          if (!row) throw new ValidationError('clientId not found in this port');
        }),
    );
  }
  if (fks.berthId) {
    checks.push(
      db.query.berths
        .findFirst({ where: and(eq(berths.id, fks.berthId), eq(berths.portId, portId)) })
        .then((row) => {
          if (!row) throw new ValidationError('berthId not found in this port');
        }),
    );
  }
  if (fks.yachtId) {
    checks.push(
      db.query.yachts
        .findFirst({ where: and(eq(yachts.id, fks.yachtId), eq(yachts.portId, portId)) })
        .then((row) => {
          if (!row) throw new ValidationError('yachtId not found in this port');
        }),
    );
  }
  await Promise.all(checks);
}

// ─── Yacht ownership validator ───────────────────────────────────────────────

async function assertYachtBelongsToClient(
  portId: string,
  yachtId: string,
  clientId: string,
): Promise<void> {
  const yacht = await db.query.yachts.findFirst({
    where: and(eq(yachts.id, yachtId), eq(yachts.portId, portId)),
  });
  if (!yacht) throw new ValidationError('yacht not found');

  // Direct ownership by client
  if (yacht.currentOwnerType === 'client' && yacht.currentOwnerId === clientId) {
    return;
  }

  // Company-represented: client has active membership in the owning company
  if (yacht.currentOwnerType === 'company') {
    const membership = await db.query.companyMemberships.findFirst({
      where: and(
        eq(companyMemberships.companyId, yacht.currentOwnerId),
        eq(companyMemberships.clientId, clientId),
        isNull(companyMemberships.endDate),
      ),
    });
    if (membership) return;
  }

  throw new ValidationError('yacht does not belong to this client');
}

// ─── BR-011: Auto-promote leadCategory ───────────────────────────────────────

async function resolveLeadCategory(
  clientId: string,
  leadCategory: string | undefined | null,
  yachtId?: string | null,
): Promise<string | undefined> {
  if (leadCategory && leadCategory !== 'general_interest') {
    return leadCategory;
  }

  if (yachtId) {
    const yacht = await db.query.yachts.findFirst({ where: eq(yachts.id, yachtId) });
    if (yacht && (yacht.lengthFt || yacht.lengthM)) {
      return 'specific_qualified';
    }
  }

  return leadCategory ?? undefined;
}

// ─── Board (kanban) ───────────────────────────────────────────────────────────

/**
 * Soft cap on board rows. The kanban legitimately needs every active
 * interest in one shot - paginating would split deals across pages and
 * break drag-drop semantics - but unbounded SELECTs are a footgun if a
 * port suddenly has tens of thousands of stale interests. At 5000 the
 * payload is still well under a megabyte (≈50 bytes per minimal row),
 * and any port near that ceiling needs virtualization in the kanban UI
 * anyway, so failing loud here is the right escalation.
 */
const BOARD_MAX_ROWS = 5000;

export interface BoardInterestRow {
  id: string;
  clientName: string | null;
  berthMooringNumber: string | null;
  /** Every linked berth's mooring on this interest (sorted). Consumers
   *  pass this through `deriveInterestBerthLabel` for the header / card
   *  display so multi-berth interests render as `A1-A3, B5` rather than
   *  just the primary mooring. */
  berthMoorings: string[];
  leadCategory: string | null;
  pipelineStage: string;
  updatedAt: Date;
}

export interface BoardFilters {
  /** Free-text search against client name. */
  search?: string;
  leadCategory?: string;
  source?: string;
  eoiStatus?: string;
  /** Tag IDs the interest must be tagged with (any-of). */
  tagIds?: string[];
}

/**
 * Minimal-projection list for the kanban board. Skips the validator's
 * `max(100)` page cap since the board renders the entire pipeline at
 * once. Returns only the fields PipelineCard renders - no tags-list, no
 * notes-count, no EOI status badges, no urgency joins. Always filters
 * out archived interests (the kanban is for active deals; the list view
 * has the includeArchived toggle for history).
 *
 * Filters are intentionally a SUBSET of listInterests - `pipelineStage`
 * is omitted because the columns ARE the stages, and `includeArchived`
 * is omitted because the kanban shouldn't surface archived deals.
 *
 * One round-trip for the interests + clientName join, one batched
 * round-trip via getPrimaryBerthsForInterests for the mooring numbers,
 * and one batched lookup for tag-id filtering when supplied.
 */
export async function listInterestsForBoard(
  portId: string,
  filters: BoardFilters = {},
): Promise<{ data: BoardInterestRow[]; truncated: boolean; total: number }> {
  // Kanban shows only active deals - terminal (outcome-set) rows have
  // their own /closed views. Pre-2026-05-14 this filter was just
  // `archivedAt IS NULL`, which worked because setOutcome moved the
  // stage to the 'completed' sentinel and the kanban only renders the
  // 7-stage canon. With the sentinel-stage cleanup, terminal rows now
  // keep their actual stage value, so we filter outcome explicitly.
  const conditions = [
    eq(interests.portId, portId),
    isNull(interests.archivedAt),
    isNull(interests.outcome),
  ];

  if (filters.leadCategory) {
    conditions.push(eq(interests.leadCategory, filters.leadCategory));
  }
  if (filters.source) {
    conditions.push(eq(interests.source, filters.source));
  }
  if (filters.eoiStatus) {
    conditions.push(eq(interests.eoiStatus, filters.eoiStatus));
  }

  // Tag-id filter resolves through the join table first so the main
  // query stays a simple WHERE id IN (…) rather than a SELECT DISTINCT
  // with LEFT JOIN - keeps Postgres' planner happy at scale.
  if (filters.tagIds && filters.tagIds.length > 0) {
    const tagMatches = await db
      .selectDistinct({ interestId: interestTags.interestId })
      .from(interestTags)
      .where(inArray(interestTags.tagId, filters.tagIds));
    const matchingIds = tagMatches.map((r) => r.interestId);
    if (matchingIds.length === 0) {
      return { data: [], truncated: false, total: 0 };
    }
    conditions.push(inArray(interests.id, matchingIds));
  }

  // Search hits client name via the LEFT JOIN. ILIKE is correct here -
  // the kanban list is small (≤5000 rows) so an index scan isn't
  // required, and pg_trgm would be overkill for the board surface.
  if (filters.search && filters.search.trim().length > 0) {
    const term = `%${filters.search.trim().replace(/[%_]/g, '\\$&')}%`;
    conditions.push(sql`${clients.fullName} ILIKE ${term}`);
  }

  const rows = await db
    .select({
      id: interests.id,
      clientName: clients.fullName,
      leadCategory: interests.leadCategory,
      pipelineStage: interests.pipelineStage,
      updatedAt: interests.updatedAt,
    })
    .from(interests)
    .leftJoin(clients, eq(interests.clientId, clients.id))
    .where(and(...conditions))
    .orderBy(desc(interests.updatedAt))
    .limit(BOARD_MAX_ROWS + 1);

  const truncated = rows.length > BOARD_MAX_ROWS;
  const data = truncated ? rows.slice(0, BOARD_MAX_ROWS) : rows;

  // Primary-berth resolution stays in the junction-aware service so the
  // board sees the same "the berth for this deal" as every other surface.
  // All-berth aggregator runs in parallel; both come from the same
  // interest_berths table so the round-trips are independent.
  const interestIds = data.map((r) => r.id);
  const [primaryBerthMap, allBerthMooringsMap] = await Promise.all([
    getPrimaryBerthsForInterests(interestIds),
    getAllBerthMooringsForInterests(interestIds),
  ]);

  return {
    data: data.map((r) => ({
      id: r.id,
      clientName: r.clientName ?? null,
      berthMooringNumber: primaryBerthMap.get(r.id)?.mooringNumber ?? null,
      berthMoorings: allBerthMooringsMap.get(r.id) ?? [],
      leadCategory: r.leadCategory ?? null,
      pipelineStage: r.pipelineStage,
      updatedAt: r.updatedAt,
    })),
    truncated,
    total: data.length,
  };
}

// ─── List ─────────────────────────────────────────────────────────────────────

export async function listInterests(portId: string, query: ListInterestsInput) {
  const {
    page,
    limit,
    sort,
    order,
    search,
    includeArchived,
    clientId,
    yachtId,
    berthId,
    pipelineStage,
    leadCategory,
    eoiStatus,
    tagIds,
  } = query;

  const filters = [];

  if (clientId) {
    filters.push(eq(interests.clientId, clientId));
  }
  if (yachtId) {
    filters.push(eq(interests.yachtId, yachtId));
  }
  if (berthId) {
    // EXISTS subquery against the junction: matches whether or not the
    // berth is the interest's primary, mirroring "this berth is linked
    // to this interest in any role" semantics from plan §3.4.
    filters.push(
      exists(
        db
          .select({ one: sql`1` })
          .from(interestBerths)
          .where(
            and(eq(interestBerths.interestId, interests.id), eq(interestBerths.berthId, berthId)),
          ),
      ),
    );
  }
  if (pipelineStage && pipelineStage.length > 0) {
    filters.push(inArray(interests.pipelineStage, pipelineStage));
  }
  if (leadCategory) {
    filters.push(eq(interests.leadCategory, leadCategory));
  }
  if (eoiStatus) {
    filters.push(eq(interests.eoiStatus, eoiStatus));
  }
  if (tagIds && tagIds.length > 0) {
    const interestsWithTags = await db
      .selectDistinct({ interestId: interestTags.interestId })
      .from(interestTags)
      .where(inArray(interestTags.tagId, tagIds));
    const matchingIds = interestsWithTags.map((r) => r.interestId);
    if (matchingIds.length > 0) {
      filters.push(inArray(interests.id, matchingIds));
    } else {
      return { data: [], total: 0 };
    }
  }

  const sortColumn = (() => {
    switch (sort) {
      case 'pipelineStage':
        return interests.pipelineStage;
      case 'leadCategory':
        return interests.leadCategory;
      case 'createdAt':
        return interests.createdAt;
      case 'dateLastContact':
        // Postgres sorts NULLs last on DESC by default, which is the right
        // behaviour for triage (recently-contacted first, never-contacted
        // at the bottom).
        return interests.dateLastContact;
      default:
        return interests.updatedAt;
    }
  })();

  const result = await buildListQuery({
    table: interests,
    portIdColumn: interests.portId,
    portId,
    idColumn: interests.id,
    updatedAtColumn: interests.updatedAt,
    filters,
    sort: { column: sortColumn, direction: order },
    page,
    pageSize: limit,
    searchColumns: [],
    searchTerm: search,
    includeArchived,
    archivedAtColumn: interests.archivedAt,
  });

  // Join client names, primary-berth mooring numbers, and yacht names.
  const interestIds = (result.data as Array<{ id: string; clientId: string }>).map((i) => i.id);
  const clientIds = [
    ...new Set((result.data as Array<{ clientId: string }>).map((i) => i.clientId)),
  ];
  const yachtIds = [
    ...new Set(
      (result.data as Array<{ yachtId: string | null }>)
        .map((i) => i.yachtId)
        .filter(Boolean) as string[],
    ),
  ];

  let clientsMap: Record<string, string> = {};
  let yachtsMap: Record<string, string> = {};
  const tagsByInterestId: Record<string, Array<{ id: string; name: string; color: string }>> = {};
  const notesCountByInterestId: Record<string, number> = {};

  if (clientIds.length > 0) {
    const clientRows = await db
      .select({ id: clients.id, fullName: clients.fullName })
      .from(clients)
      .where(inArray(clients.id, clientIds));
    clientsMap = Object.fromEntries(clientRows.map((c) => [c.id, c.fullName]));
  }

  // Primary-berth lookup via the interest_berths junction. Single round-trip
  // by interestId list - see plan §3.4: every "the berth for this interest"
  // surface resolves through getPrimaryBerth(...) rather than a column read.
  // Sibling all-mooring aggregator runs in parallel so the list endpoint
  // can surface multi-berth labels (A1-A3, B5) without a second waterfall.
  const [primaryBerthMap, allBerthMooringsMap] = await Promise.all([
    getPrimaryBerthsForInterests(interestIds),
    getAllBerthMooringsForInterests(interestIds),
  ]);

  if (yachtIds.length > 0) {
    const yachtRows = await db
      .select({ id: yachts.id, name: yachts.name })
      .from(yachts)
      .where(inArray(yachts.id, yachtIds));
    yachtsMap = Object.fromEntries(yachtRows.map((y) => [y.id, y.name]));
  }

  if (interestIds.length > 0) {
    const tagRows = await db
      .select({
        interestId: interestTags.interestId,
        id: tags.id,
        name: tags.name,
        color: tags.color,
      })
      .from(interestTags)
      .innerJoin(tags, eq(interestTags.tagId, tags.id))
      .where(inArray(interestTags.interestId, interestIds));

    for (const row of tagRows) {
      if (!tagsByInterestId[row.interestId]) tagsByInterestId[row.interestId] = [];
      tagsByInterestId[row.interestId]!.push({ id: row.id, name: row.name, color: row.color });
    }

    // Note counts per interest, for the comment-icon row affordance.
    const noteCountRows = await db
      .select({
        interestId: interestNotes.interestId,
        count: sql<number>`count(*)::int`,
      })
      .from(interestNotes)
      .where(inArray(interestNotes.interestId, interestIds))
      .groupBy(interestNotes.interestId);
    for (const row of noteCountRows) {
      notesCountByInterestId[row.interestId] = row.count;
    }
  }

  const data = (result.data as Array<Record<string, unknown>>).map((i) => {
    const primary = primaryBerthMap.get(i.id as string) ?? null;
    return {
      ...i,
      clientName: clientsMap[i.clientId as string] ?? null,
      berthId: primary?.berthId ?? null,
      berthMooringNumber: primary?.mooringNumber ?? null,
      berthMoorings: allBerthMooringsMap.get(i.id as string) ?? [],
      yachtName: i.yachtId ? (yachtsMap[i.yachtId as string] ?? null) : null,
      tags: tagsByInterestId[i.id as string] ?? [],
      notesCount: notesCountByInterestId[i.id as string] ?? 0,
    };
  });

  return { data, total: result.total };
}

// ─── Get by ID ────────────────────────────────────────────────────────────────

export async function getInterestById(id: string, portId: string) {
  const interest = await db.query.interests.findFirst({
    where: eq(interests.id, id),
  });

  if (!interest || interest.portId !== portId) {
    throw new NotFoundError('Interest');
  }

  const [clientRow] = await db
    .select({ fullName: clients.fullName })
    .from(clients)
    .where(eq(clients.id, interest.clientId));

  // EOI prerequisites + interest-detail header contact actions: surface the
  // linked client's primary email/phone (and the canonical E.164 form for
  // wa.me) so the header can render Email / Call / WhatsApp buttons without
  // a second fetch, and the Documents tab can show the EOI prereq checklist.
  const [emailContact] = await db
    .select({ id: clientContacts.id, value: clientContacts.value })
    .from(clientContacts)
    .where(and(eq(clientContacts.clientId, interest.clientId), eq(clientContacts.channel, 'email')))
    .orderBy(desc(clientContacts.isPrimary), desc(clientContacts.updatedAt))
    .limit(1);

  const [phoneContact] = await db
    .select({
      id: clientContacts.id,
      value: clientContacts.value,
      valueE164: clientContacts.valueE164,
      valueCountry: clientContacts.valueCountry,
    })
    .from(clientContacts)
    .where(
      and(
        eq(clientContacts.clientId, interest.clientId),
        inArray(clientContacts.channel, ['phone', 'whatsapp']),
      ),
    )
    .orderBy(desc(clientContacts.isPrimary), desc(clientContacts.updatedAt))
    .limit(1);

  const [addressRow] = await db
    .select({ id: clientAddresses.id })
    .from(clientAddresses)
    .where(
      and(eq(clientAddresses.clientId, interest.clientId), eq(clientAddresses.isPrimary, true)),
    )
    .limit(1);

  // Primary berth comes from the interest_berths junction (plan §3.4).
  // All linked moorings come from the same junction in one go - powers
  // the multi-berth label rendered on every "interest header" surface.
  const [primaryBerth, allMooringsMap] = await Promise.all([
    getPrimaryBerth(interest.id),
    getAllBerthMooringsForInterests([interest.id]),
  ]);
  const berthId = primaryBerth?.berthId ?? null;
  const berthMooringNumber = primaryBerth?.mooringNumber ?? null;
  const berthMoorings = allMooringsMap.get(interest.id) ?? [];

  // Total linked-berth count powers the "Berth Interest" milestone on
  // the OverviewTab - first thing the rep needs to capture, especially
  // for general_interest leads. Resolved here (not from the join above)
  // so the count includes berths the rep added without marking primary.
  const [{ count: linkedBerthCount } = { count: 0 }] = await db
    .select({ count: sql<number>`count(*)::int` })
    .from(interestBerths)
    .where(eq(interestBerths.interestId, id));

  const tagRows = await db
    .select({ id: tags.id, name: tags.name, color: tags.color })
    .from(interestTags)
    .innerJoin(tags, eq(interestTags.tagId, tags.id))
    .where(eq(interestTags.interestId, id));

  // Most-recent note preview for the Overview tab (the "do you have anything
  // outstanding on this lead?" peek). Returns the latest note's truncated
  // content + author/timestamp so the UI can render a one-line teaser.
  // Left-joins userProfiles so the teaser can show the author's display name
  // instead of leaking the raw user-id UUID.
  const [recentNote] = await db
    .select({
      id: interestNotes.id,
      content: interestNotes.content,
      authorId: interestNotes.authorId,
      authorName: userProfiles.displayName,
      createdAt: interestNotes.createdAt,
    })
    .from(interestNotes)
    .leftJoin(userProfiles, eq(userProfiles.userId, interestNotes.authorId))
    .where(eq(interestNotes.interestId, id))
    .orderBy(desc(interestNotes.createdAt))
    .limit(1);

  const [{ count: notesCount } = { count: 0 }] = await db
    .select({ count: sql<number>`count(*)::int` })
    .from(interestNotes)
    .where(eq(interestNotes.interestId, id));

  // Aggregated note count = direct interest notes + notes attached to
  // the linked client, yacht (if any), and any companies the linked
  // client is an active member of. Surfaces as a separate field so the
  // existing notesCount badge stays accurate to "this interest only",
  // while the Notes tab can render the broader total when reps want
  // the full picture at a glance.
  const clientNotesP = db
    .select({ count: sql<number>`count(*)::int` })
    .from(clientNotes)
    .where(eq(clientNotes.clientId, interest.clientId));
  const yachtNotesP = interest.yachtId
    ? db
        .select({ count: sql<number>`count(*)::int` })
        .from(yachtNotes)
        .where(eq(yachtNotes.yachtId, interest.yachtId))
    : Promise.resolve([{ count: 0 }]);
  const companyMembershipsP = db
    .select({ companyId: companyMemberships.companyId })
    .from(companyMemberships)
    .where(
      and(eq(companyMemberships.clientId, interest.clientId), isNull(companyMemberships.endDate)),
    );
  const [clientNotesRow, yachtNotesRow, memberships] = await Promise.all([
    clientNotesP,
    yachtNotesP,
    companyMembershipsP,
  ]);
  const companyIds = memberships.map((m) => m.companyId);
  let companyNotesCount = 0;
  if (companyIds.length > 0) {
    const [row] = await db
      .select({ count: sql<number>`count(*)::int` })
      .from(companyNotes)
      .where(inArray(companyNotes.companyId, companyIds));
    companyNotesCount = row?.count ?? 0;
  }
  const notesCountAggregated =
    notesCount +
    (clientNotesRow[0]?.count ?? 0) +
    (yachtNotesRow[0]?.count ?? 0) +
    companyNotesCount;

  // Active reminder count for the interest's bell badge. Counts reminders
  // directly linked via interestId - `pending` and `snoozed` only;
  // completed/dismissed don't surface.
  const [{ count: activeReminderCount } = { count: 0 }] = await db
    .select({ count: sql<number>`count(*)::int` })
    .from(reminders)
    .where(and(eq(reminders.interestId, id), inArray(reminders.status, ['pending', 'snoozed'])));

  // Activity log entries in the last 7 days - surfaces "rep is engaged"
  // as a separate signal in the deal-health pulse beyond the coarse
  // dateLastContact bump.
  const sevenDaysAgo = new Date(Date.now() - 7 * 86_400_000);
  const [{ count: recentActivityCount } = { count: 0 }] = await db
    .select({ count: sql<number>`count(*)::int` })
    .from(interestContactLog)
    .where(
      and(eq(interestContactLog.interestId, id), gte(interestContactLog.occurredAt, sevenDaysAgo)),
    );

  // Phase 2 - risk-signal derivation. Three dates feed `computeDealHealth`
  // off the existing event tables so the pulse chip surfaces document
  // declines / cancelled reservations / berth-resold-to-other without
  // adding bespoke timestamp columns on `interests`. Each query runs in
  // parallel; all return `null` when no matching event exists.
  const [declinedRow, cancelledReservationRow, berthResoldRow] = await Promise.all([
    // Latest 'rejected' / 'declined' document event whose document is
    // linked to this interest.
    db
      .select({ at: documentEvents.createdAt })
      .from(documentEvents)
      .innerJoin(documents, eq(documents.id, documentEvents.documentId))
      .where(
        and(
          eq(documents.interestId, id),
          inArray(documentEvents.eventType, ['rejected', 'declined']),
        ),
      )
      .orderBy(desc(documentEvents.createdAt))
      .limit(1),
    // Latest cancelled berth_tenancy row pointing at this interest.
    // berth_tenancies has no cancelled_at column; updatedAt is set when
    // the row flips to status='cancelled', so it tracks the same moment.
    db
      .select({ at: berthTenancies.updatedAt })
      .from(berthTenancies)
      .where(and(eq(berthTenancies.interestId, id), eq(berthTenancies.status, 'cancelled')))
      .orderBy(desc(berthTenancies.updatedAt))
      .limit(1),
    // "Berth sold to another deal" - any of this interest's linked berths
    // has at least one OTHER interest with a `won` outcome. Take the
    // latest such outcome timestamp. archivedAt is a close proxy for the
    // moment the win was finalised on the conflicting deal.
    //
    // The inner subquery resolves *this* interest's berth_ids; the outer
    // query joins interestBerths to the won other-interest and filters
    // its berth_id against that set. Using raw `sql` avoids the alias
    // collision a Drizzle `exists()` would create with the same table on
    // both sides of the correlation.
    db.execute(
      sql`SELECT MAX(other.archived_at) AS at
          FROM interests other
          JOIN interest_berths ob ON ob.interest_id = other.id
          WHERE other.id <> ${id}
            AND other.outcome = 'won'
            AND ob.berth_id IN (
              SELECT berth_id FROM interest_berths WHERE interest_id = ${id}
            )`,
    ),
  ]);
  const dateDocumentDeclined = declinedRow[0]?.at ?? null;
  const dateReservationCancelled = cancelledReservationRow[0]?.at ?? null;
  // db.execute(sql`...`) returns either an array (postgres-js driver) or
  // a `{rows: []}` object depending on driver build - match the dual
  // shape used by src/lib/storage/migrate.ts.
  const berthResoldRaw = berthResoldRow as unknown as
    | Array<{ at: Date | null }>
    | { rows?: Array<{ at: Date | null }> };
  const berthResoldRows = Array.isArray(berthResoldRaw)
    ? berthResoldRaw
    : (berthResoldRaw.rows ?? []);
  const dateBerthSoldToOther = berthResoldRows[0]?.at ?? null;

  // Yacht dimensions for inheritance display in OverviewTab. When the
  // interest has a linked yacht we ship the yacht's length/width/draft
  // alongside the interest record so the Berth Requirements section can
  // render a "from yacht" pill in place of an empty value. This is a
  // display-only inheritance - the actual recommender source switch is
  // still governed by `interests.useYachtDimensions`.
  let yachtDimensions: {
    lengthFt: string | null;
    widthFt: string | null;
    draftFt: string | null;
    lengthM: string | null;
    widthM: string | null;
    draftM: string | null;
  } | null = null;
  if (interest.yachtId) {
    const [yachtRow] = await db
      .select({
        lengthFt: yachts.lengthFt,
        widthFt: yachts.widthFt,
        draftFt: yachts.draftFt,
        lengthM: yachts.lengthM,
        widthM: yachts.widthM,
        draftM: yachts.draftM,
      })
      .from(yachts)
      .where(eq(yachts.id, interest.yachtId))
      .limit(1);
    if (yachtRow) {
      const anyDim =
        yachtRow.lengthFt ||
        yachtRow.widthFt ||
        yachtRow.draftFt ||
        yachtRow.lengthM ||
        yachtRow.widthM ||
        yachtRow.draftM;
      if (anyDim) yachtDimensions = yachtRow;
    }
  }

  // Resolve the assignee's display name for the header chip - falling back
  // to the raw ID is fine if the user record is missing (deleted/disabled).
  let assignedToName: string | null = null;
  if (interest.assignedTo) {
    const [profile] = await db
      .select({ displayName: userProfiles.displayName })
      .from(userProfiles)
      .where(eq(userProfiles.userId, interest.assignedTo))
      .limit(1);
    assignedToName = profile?.displayName ?? null;
  }

  return {
    ...interest,
    clientName: clientRow?.fullName ?? null,
    clientPrimaryEmail: emailContact?.value ?? null,
    /** Contact-row id for the primary email - surfaces so the interest UI
     *  can inline-edit through PATCH /api/v1/clients/[id]/contacts/[contactId]. */
    clientPrimaryEmailContactId: emailContact?.id ?? null,
    clientPrimaryPhone: phoneContact?.value ?? null,
    clientPrimaryPhoneContactId: phoneContact?.id ?? null,
    clientPrimaryPhoneE164: phoneContact?.valueE164 ?? null,
    clientPrimaryPhoneCountry: phoneContact?.valueCountry ?? null,
    clientHasAddress: !!addressRow,
    berthId,
    berthMooringNumber,
    berthMoorings,
    linkedBerthCount,
    tags: tagRows,
    notesCount,
    notesCountAggregated,
    recentNote: recentNote ?? null,
    activeReminderCount,
    assignedToName,
    recentActivityCount,
    // Phase 2 - risk-signal dates derived from event tables. Feed
    // computeDealHealth so the pulse chip surfaces document declines,
    // cancelled reservations, and "berth resold to another deal" without
    // bespoke timestamp columns on the interest record.
    dateDocumentDeclined,
    dateReservationCancelled,
    dateBerthSoldToOther,
    yachtDimensions,
  };
}

// ─── Create ───────────────────────────────────────────────────────────────────

export async function createInterest(portId: string, data: CreateInterestInput, meta: AuditMeta) {
  await assertInterestFksInPort(portId, {
    clientId: data.clientId,
    berthId: data.berthId,
    yachtId: data.yachtId,
  });

  if (data.yachtId) {
    await assertYachtBelongsToClient(portId, data.yachtId, data.clientId);
  }

  const { tagIds, berthId: inputBerthId, ...interestData } = data;

  // BR-011: auto-promote leadCategory
  const resolvedLeadCategory = await resolveLeadCategory(
    data.clientId,
    data.leadCategory,
    data.yachtId,
  );

  // Per-port reminder defaults - applied only when the caller omitted
  // reminderEnabled / reminderDays. Honors the /admin/reminders page.
  const reminderConfig = await getPortReminderConfig(portId);
  const resolvedReminderEnabled = interestData.reminderEnabled ?? reminderConfig.defaultEnabled;
  const resolvedReminderDays =
    interestData.reminderDays ?? (resolvedReminderEnabled ? reminderConfig.defaultDays : null);

  // Resolve the deal owner. Three-tier chain:
  //   1. Explicit `data.assignedTo` from the caller (rep picked an
  //      assignee in the create form).
  //   2. Port's `default_new_interest_owner` setting (used for round-
  //      robin / "front desk owns all new leads" rules).
  //   3. Auto-assign to the creating user when they're a regular role
  //      (sales rep, sales manager, etc.). Skipped for super-admins who
  //      often create on behalf of other reps - they'd otherwise hijack
  //      every new lead. Falls back to null (Unassigned) when none of
  //      the above resolve.
  let resolvedAssignedTo = interestData.assignedTo ?? null;
  // CM-5: tiers 2 & 3 (port default-owner + auto-assign-to-creator) only run
  // when the per-port assignment feature is enabled. Tier 1 (an explicit
  // assignedTo from the caller) is always honored. Default is OFF.
  const assignmentSetting = await getSetting('assignment_enabled', portId);
  const assignmentEnabled = assignmentSetting?.value === true;
  if (assignmentEnabled && resolvedAssignedTo === null && !('assignedTo' in interestData)) {
    const defaultOwner = await getSetting('default_new_interest_owner', portId);
    const v = defaultOwner?.value as { userId?: string } | null | undefined;
    if (v?.userId) {
      resolvedAssignedTo = v.userId;
    } else {
      // Tier 3: auto-assign to creator only when their role is a working
      // sales rep — super_admin / director / residential_partner / viewer
      // intentionally skip (they create on behalf of others or shouldn't
      // own interests at all).
      const AUTO_ASSIGN_ROLES = new Set(['sales_agent', 'sales_manager']);
      const [profile] = await db
        .select({ isSuperAdmin: userProfiles.isSuperAdmin })
        .from(userProfiles)
        .where(eq(userProfiles.userId, meta.userId))
        .limit(1);
      if (profile && !profile.isSuperAdmin) {
        const userRoles = await db
          .select({ name: roles.name })
          .from(userPortRoles)
          .innerJoin(roles, eq(userPortRoles.roleId, roles.id))
          .where(and(eq(userPortRoles.userId, meta.userId), eq(userPortRoles.portId, portId)));
        if (userRoles.some((r) => AUTO_ASSIGN_ROLES.has(r.name))) {
          resolvedAssignedTo = meta.userId;
        }
      }
    }
  }

  const result = await withTransaction(async (tx) => {
    const [interest] = await tx
      .insert(interests)
      .values({
        portId,
        ...interestData,
        assignedTo: resolvedAssignedTo,
        reminderEnabled: resolvedReminderEnabled,
        reminderDays: resolvedReminderDays,
        leadCategory: resolvedLeadCategory,
      })
      .returning();

    if (tagIds && tagIds.length > 0) {
      await tx
        .insert(interestTags)
        .values(tagIds.map((tagId) => ({ interestId: interest!.id, tagId })));
    }

    // Plan §3.4: when berthId is provided we materialise it as a junction
    // row inside the same transaction so an interest is never created
    // without its primary-berth link surviving rollback.
    if (inputBerthId) {
      await upsertInterestBerthTx(tx, interest!.id, inputBerthId, {
        isPrimary: true,
        isSpecificInterest: true,
        isInEoiBundle: false,
        addedBy: meta.userId,
      });
    }

    return interest!;
  });

  void createAuditLog({
    userId: meta.userId,
    portId,
    action: 'create',
    entityType: 'interest',
    entityId: result.id,
    newValue: { clientId: result.clientId, pipelineStage: result.pipelineStage },
    ipAddress: meta.ipAddress,
    userAgent: meta.userAgent,
  });

  emitToRoom(`port:${portId}`, 'interest:created', {
    interestId: result.id,
    clientId: result.clientId,
    berthId: inputBerthId ?? null,
    source: result.source ?? '',
  });

  void import('@/lib/services/webhook-dispatch').then(({ dispatchWebhookEvent }) =>
    dispatchWebhookEvent(portId, 'interest:created', {
      interestId: result.id,
      clientId: result.clientId,
    }),
  );

  // Phase 6 - CRM → Umami attribution. Fire an inbound-lead event so
  // marketing can correlate inquiry volume with website traffic by
  // source / referrer.
  void import('@/lib/services/umami.service').then(({ trackEvent }) =>
    trackEvent(portId, 'interest-created', {
      interestId: result.id,
      source: result.source ?? null,
    }),
  );

  return result;
}

// ─── Update ───────────────────────────────────────────────────────────────────

export async function updateInterest(
  id: string,
  portId: string,
  data: UpdateInterestInput,
  meta: AuditMeta,
) {
  const existing = await db.query.interests.findFirst({
    where: eq(interests.id, id),
  });

  if (!existing || existing.portId !== portId) {
    throw new NotFoundError('Interest');
  }

  // berthId no longer lives on the interests row - resolve current primary
  // via the junction so we know whether the caller is asking for a change.
  const currentPrimary = await getPrimaryBerth(id);
  const currentBerthId = currentPrimary?.berthId ?? null;

  await assertInterestFksInPort(portId, {
    berthId: data.berthId && data.berthId !== currentBerthId ? data.berthId : null,
    yachtId: data.yachtId && data.yachtId !== existing.yachtId ? data.yachtId : null,
  });

  if (data.yachtId && data.yachtId !== existing.yachtId) {
    await assertYachtBelongsToClient(portId, data.yachtId, existing.clientId);
  }

  // BR-011: auto-promote leadCategory if provided
  let resolvedLeadCategory = data.leadCategory;
  if ('leadCategory' in data) {
    resolvedLeadCategory = (await resolveLeadCategory(
      existing.clientId,
      data.leadCategory,
      data.yachtId ?? existing.yachtId,
    )) as typeof data.leadCategory;
  }

  // Strip berthId out of the row write - the column was removed by the
  // junction-migration. We keep the value for diff/audit purposes and
  // dispatch the junction write separately.
  const { berthId: incomingBerthId, ...rowData } = data;
  const updateData = { ...rowData, leadCategory: resolvedLeadCategory };
  const { diff } = diffEntity(
    { ...(existing as Record<string, unknown>), berthId: currentBerthId },
    { ...(updateData as Record<string, unknown>), berthId: incomingBerthId ?? currentBerthId },
  );

  const [updated] = await db
    .update(interests)
    .set({ ...updateData, updatedAt: new Date() })
    .where(and(eq(interests.id, id), eq(interests.portId, portId)))
    .returning();

  // Apply primary-berth change through the junction so the unique
  // partial index is respected and the previous primary is demoted.
  if ('berthId' in data && incomingBerthId !== currentBerthId) {
    if (incomingBerthId) {
      await upsertInterestBerth(id, incomingBerthId, {
        isPrimary: true,
        isSpecificInterest: true,
        addedBy: meta.userId,
      });
    } else if (currentBerthId) {
      await removeInterestBerth(id, currentBerthId, portId, meta);
    }
  }

  void createAuditLog({
    userId: meta.userId,
    portId,
    action: 'update',
    entityType: 'interest',
    entityId: id,
    oldValue: diff as Record<string, unknown>,
    newValue: updateData as Record<string, unknown>,
    ipAddress: meta.ipAddress,
    userAgent: meta.userAgent,
  });

  emitToRoom(`port:${portId}`, 'interest:updated', {
    interestId: id,
    changedFields: Object.keys(diff),
  });

  // Owner change → notify the new assignee. We skip self-reassign so a rep
  // re-claiming their own deal doesn't get a noise notification.
  if (
    'assignedTo' in data &&
    data.assignedTo &&
    data.assignedTo !== existing.assignedTo &&
    data.assignedTo !== meta.userId
  ) {
    const [clientRow] = await db
      .select({ fullName: clients.fullName })
      .from(clients)
      .where(eq(clients.id, existing.clientId))
      .limit(1);
    const clientLabel = clientRow?.fullName ?? 'a client';

    void import('@/lib/services/notifications.service').then(({ createNotification }) =>
      createNotification({
        portId,
        userId: data.assignedTo!,
        type: 'interest_assigned',
        title: 'New deal assigned to you',
        description: `${clientLabel} - ${existing.pipelineStage.replace(/_/g, ' ')}`,
        link: `/interests/${id}` as never,
        entityType: 'interest',
        entityId: id,
        dedupeKey: `interest_assigned:${id}:${data.assignedTo}`,
      }),
    );
  }

  return updated!;
}

// ─── Change Stage ─────────────────────────────────────────────────────────────

/**
 * Sentinel returned by changeInterestStage when the requested target
 * matches the current stage (no audit row, no socket emit, no DB update).
 * The route handler translates this to a 204 No Content response.
 */
export const STAGE_NOOP = Symbol('stage-noop');

export async function changeInterestStage(
  id: string,
  portId: string,
  data: ChangeStageInput,
  meta: AuditMeta,
  // M3: distinguishes a manual/UI stage move (the /stage route + bulk route
  // call this directly) from a lifecycle/signing-driven advance routed
  // through advanceStageIfBehind (EOI sent/signed, deposit met, contract
  // signed, reservation signed, custom-doc upload). For signing-driven
  // advances the milestone date is owned by the doc-send/sign flow that
  // already stamped the real event timestamp - auto-stamping `now` here on
  // top of it back-dates "sent → signed" to ~0. So we only auto-populate
  // milestone columns when `lifecycleDriven` is false (manual/UI move).
  options?: { lifecycleDriven?: boolean },
) {
  const lifecycleDriven = options?.lifecycleDriven ?? false;
  const existing = await db.query.interests.findFirst({
    where: eq(interests.id, id),
  });

  if (!existing || existing.portId !== portId) {
    throw new NotFoundError('Interest');
  }

  // F27 / A19: same-stage write is a no-op. The service signals this via
  // the sentinel `STAGE_NOOP` so the route handler can return 204 No
  // Content instead of 200 + full body. Pre-fix every re-submit (e.g.
  // accidental double-click) wrote a "Same → Same" audit entry and
  // triggered downstream invalidations.
  if (existing.pipelineStage === data.pipelineStage) {
    return STAGE_NOOP;
  }

  // Plan: yachtId required to leave the initial enquiry stage
  if (
    existing.pipelineStage === 'enquiry' &&
    data.pipelineStage !== 'enquiry' &&
    !existing.yachtId
  ) {
    // F21: user-readable; was "yachtId is required before leaving stage=enquiry"
    throw new ValidationError('A yacht must be linked before leaving the Enquiry stage.');
  }

  // Block egregious skips. The transition table allows reasonable forward
  // jumps (e.g. enquiry → eoi) while rejecting things like contract → enquiry.
  // Same-stage no-ops are allowed.
  // Override (sales-rep manual fix) bypasses the table - the route handler
  // gates this on the `interests.override_stage` permission and requires
  // a reason, recorded in the audit log below.
  if (!data.override && !canTransitionStage(existing.pipelineStage, data.pipelineStage)) {
    // F21: use the human-readable stage labels in error copy.
    throw new ValidationError(
      `Cannot move interest from "${STAGE_LABELS[existing.pipelineStage as PipelineStage] ?? existing.pipelineStage}" directly to "${STAGE_LABELS[data.pipelineStage as PipelineStage] ?? data.pipelineStage}". Use the override option if you need to skip stages - requires a reason.`,
    );
  }
  if (data.override && (!data.reason || data.reason.trim().length < 5)) {
    throw new ValidationError(
      'Override requires a reason (min 5 chars) explaining the manual stage change.',
    );
  }

  // T65 (Bucket 4 bug #2): block advancing past Qualified onto a
  // primary berth whose `price` is NULL. EOI / Reservation / Deposit /
  // Contract docs all render the price in templates / merge fields and
  // generating a $0 contract is a real production gotcha. Allow the
  // skip when `override` is true so a sales-manager fix path stays
  // open (recorded with a reason in audit log).
  const PRICED_STAGES = new Set(['eoi', 'reservation', 'deposit_paid', 'contract']);
  if (!data.override && PRICED_STAGES.has(data.pipelineStage)) {
    const primaryBerth = await db
      .select({ price: berths.price })
      .from(interestBerths)
      .innerJoin(berths, eq(interestBerths.berthId, berths.id))
      .where(and(eq(interestBerths.interestId, id), eq(interestBerths.isPrimary, true)))
      .limit(1);
    const price = primaryBerth[0]?.price;
    if (!price || parseFloat(String(price)) === 0) {
      throw new ValidationError(
        `Primary berth has no price set. Set the berth price before advancing past Qualified, or override with a reason.`,
      );
    }
  }

  const oldStage = existing.pipelineStage;

  // BR-133: Auto-populate milestones based on stage. The rep can override the
  // stamp via `milestoneDate` when they're back-dating a real event (e.g.
  // "deposit landed yesterday"); we still default to now when omitted.
  //
  // M3: only stamp milestone columns for manual/UI moves. Lifecycle/signing-
  // driven advances (routed through advanceStageIfBehind) get their milestone
  // dates from the doc-send/sign flow that already recorded the true event
  // timestamp; auto-stamping `now` here on top of that back-dates intervals
  // like "contract sent → signed" to ~0. Folding this into the same UPDATE as
  // the stage change also removes the previous non-transactional double-write.
  const milestoneUpdates: Record<string, unknown> = {};
  if (!lifecycleDriven) {
    const milestoneDate = data.milestoneDate ? new Date(data.milestoneDate) : new Date();
    if (data.pipelineStage === 'eoi') milestoneUpdates.dateEoiSent = milestoneDate;
    if (data.pipelineStage === 'reservation')
      milestoneUpdates.dateReservationSigned = milestoneDate;
    if (data.pipelineStage === 'deposit_paid') milestoneUpdates.dateDepositReceived = milestoneDate;
    if (data.pipelineStage === 'contract') milestoneUpdates.dateContractSent = milestoneDate;
  }

  const [updated] = await db
    .update(interests)
    .set({ pipelineStage: data.pipelineStage, ...milestoneUpdates, updatedAt: new Date() })
    .where(and(eq(interests.id, id), eq(interests.portId, portId)))
    .returning();

  void createAuditLog({
    userId: meta.userId,
    portId,
    action: 'update',
    entityType: 'interest',
    entityId: id,
    oldValue: { pipelineStage: oldStage },
    newValue: { pipelineStage: data.pipelineStage, reason: data.reason },
    metadata: { type: 'stage_change', reason: data.reason },
    ipAddress: meta.ipAddress,
    userAgent: meta.userAgent,
  });

  emitToRoom(`port:${portId}`, 'interest:stageChanged', {
    interestId: id,
    oldStage: oldStage ?? '',
    newStage: data.pipelineStage,
    clientName: '',
    berthNumber: '',
  });

  void import('@/lib/services/webhook-dispatch').then(({ dispatchWebhookEvent }) =>
    dispatchWebhookEvent(portId, 'interest:stageChanged', {
      interestId: id,
      oldStage: oldStage ?? null,
      newStage: data.pipelineStage,
    }),
  );

  // Phase 6 - CRM → Umami attribution for pipeline movement.
  void import('@/lib/services/umami.service').then(({ trackEvent }) =>
    trackEvent(portId, 'interest-stage-changed', {
      interestId: id,
      oldStage: oldStage ?? null,
      newStage: data.pipelineStage,
    }),
  );

  // Fire-and-forget notification to the acting user. Resolve a friendly
  // label (client full name → primary mooring number → "this interest") so
  // the inbox doesn't surface a raw UUID; stage names go through the
  // canonical STAGE_LABELS dictionary so "deposit_10pct" reads as
  // "10% Deposit" everywhere.
  void (async () => {
    const [{ createNotification }, clientRow, allBerths] = await Promise.all([
      import('@/lib/services/notifications.service'),
      db.query.clients.findFirst({
        where: eq(clients.id, existing.clientId),
        columns: { fullName: true },
      }),
      listBerthsForInterest(id).catch(
        () => [] as Awaited<ReturnType<typeof listBerthsForInterest>>,
      ),
    ]);
    const primaryBerth = allBerths[0] ?? null;
    const moorings = allBerths.map((b) => b.mooringNumber).filter((m): m is string => Boolean(m));
    const berthSuffix = moorings.length > 0 ? ` [${formatBerthRange(moorings)}]` : '';
    const subject =
      clientRow?.fullName ??
      (primaryBerth?.mooringNumber ? `Berth ${primaryBerth.mooringNumber}` : 'this interest');
    const fromLabel = oldStage
      ? (STAGE_LABELS[oldStage as PipelineStage] ?? oldStage.replace(/_/g, ' '))
      : 'unknown';
    const toLabel =
      STAGE_LABELS[data.pipelineStage as PipelineStage] ?? data.pipelineStage.replace(/_/g, ' ');
    await createNotification({
      portId,
      userId: meta.userId,
      type: 'interest_stage_changed',
      title: `${subject} moved to ${toLabel}${berthSuffix}`,
      description: `Stage changed from ${fromLabel} to ${toLabel}.`,
      link: `/interests/${id}`,
      entityType: 'interest',
      entityId: id,
      dedupeKey: `interest:${id}:stage:${data.pipelineStage}`,
      cooldownMs: 300_000,
    });
  })();

  return updated!;
}

// ─── Advance Stage If Behind ─────────────────────────────────────────────────
//
// Moves an interest forward to `target` if (and only if) it is currently behind
// it in the pipeline order. Used by lifecycle events (EOI sent, EOI signed,
// deposit recorded, contract signed) so the user-visible stage tracks reality
// without overwriting a more advanced state - e.g. a late-arriving signed-EOI
// webhook on an interest that has already moved on to `contract_sent` is a
// no-op rather than a regression.
//
// Returns true when the stage was changed.
export async function advanceStageIfBehind(
  interestId: string,
  portId: string,
  target: PipelineStage,
  meta: AuditMeta,
  reason?: string,
): Promise<boolean> {
  const existing = await db.query.interests.findFirst({
    where: and(eq(interests.id, interestId), eq(interests.portId, portId)),
  });
  if (!existing) return false;

  const currentIdx = PIPELINE_STAGES.indexOf(existing.pipelineStage as PipelineStage);
  const targetIdx = PIPELINE_STAGES.indexOf(target);
  if (currentIdx === -1 || targetIdx === -1 || currentIdx >= targetIdx) {
    return false;
  }

  // yachtId gate: changeInterestStage requires a yacht before leaving the
  // initial enquiry stage. EOI events imply a yacht is in the picture, but
  // if the data is missing we bail rather than throw - the EOI itself
  // shouldn't fail because of this.
  if (existing.pipelineStage === 'enquiry' && !existing.yachtId) {
    return false;
  }

  // M3: this helper is the single funnel for every lifecycle/signing-driven
  // advance (EOI sent/signed, deposit met, contract signed, reservation
  // signed, custom-doc upload). Flag the move so changeInterestStage does not
  // auto-stamp milestone dates - those are owned by the doc-send/sign flow,
  // which already recorded the real event timestamp.
  await changeInterestStage(interestId, portId, { pipelineStage: target, reason }, meta, {
    lifecycleDriven: true,
  });
  return true;
}

/**
 * Gated variant: reads the per-port `stage_advance_rules` setting for the
 * given trigger and either:
 *   - 'auto' → calls advanceStageIfBehind (same behaviour as the base helper)
 *   - 'suggest' → emits an in-CRM notification with an Approve link so the
 *     rep can advance with one click (no auto-move)
 *   - 'off' → no-op (audit log of the event still fires upstream)
 *
 * Use this from every lifecycle event handler that wants admin-controlled
 * cadence - the bare `advanceStageIfBehind` stays available for paths
 * where the move is unconditional (manual rep action, completion of a
 * doc the admin can't disable).
 */
export async function advanceStageIfBehindGated(
  interestId: string,
  portId: string,
  target: PipelineStage,
  meta: AuditMeta,
  reason: string | undefined,
  trigger:
    | 'eoi_sent'
    | 'eoi_signed'
    | 'reservation_signed'
    | 'deposit_received'
    | 'contract_signed',
): Promise<boolean> {
  const { getStageAdvanceMode } = await import('@/lib/services/port-config');
  const mode = await getStageAdvanceMode(portId, trigger);
  if (mode === 'off') return false;
  if (mode === 'auto') return advanceStageIfBehind(interestId, portId, target, meta, reason);
  // 'suggest' - notify the rep with an Approve link, no auto-move. The
  // rep can click the notification to fire the same advance manually.
  const existing = await db.query.interests.findFirst({
    where: and(eq(interests.id, interestId), eq(interests.portId, portId)),
    columns: { pipelineStage: true, assignedTo: true },
  });
  if (!existing) return false;
  const currentIdx = PIPELINE_STAGES.indexOf(existing.pipelineStage as PipelineStage);
  const targetIdx = PIPELINE_STAGES.indexOf(target);
  if (currentIdx === -1 || targetIdx === -1 || currentIdx >= targetIdx) return false;
  if (existing.assignedTo) {
    void import('@/lib/services/notifications.service').then(({ createNotification }) =>
      createNotification({
        portId,
        userId: existing.assignedTo!,
        type: 'stage_advance_suggested',
        title: `Advance to ${target}?`,
        description:
          reason ??
          `${trigger} fired - suggested advance from ${existing.pipelineStage} to ${target}.`,
        link: `/interests/${interestId}`,
        entityType: 'interest',
        entityId: interestId,
        dedupeKey: `interest:${interestId}:advance-suggest:${trigger}`,
      }).catch(() => {
        // Notification failure shouldn't block the parent webhook handler.
      }),
    );
  }
  return false;
}

// ─── Set Outcome (Won / Lost) ────────────────────────────────────────────────
//
// Records a terminal outcome for the interest. The `outcome` column is the
// canonical terminal-state signal; `pipelineStage` stays where it was so
// reports can answer "what stage was this deal at when it closed?". Prior to
// 2026-05-14 this method forced pipelineStage='completed' - a sentinel
// outside the 7-stage canon that broke type narrowing + downstream stage
// label lookups. Active-interest queries filter by `outcome IS NULL` so
// the rep-facing kanban still hides closed deals.
export async function setInterestOutcome(
  id: string,
  portId: string,
  data: SetOutcomeInput,
  meta: AuditMeta,
) {
  const existing = await db.query.interests.findFirst({
    where: and(eq(interests.id, id), eq(interests.portId, portId)),
  });
  if (!existing) throw new NotFoundError('Interest');

  // M1: terminal-state guard. Once an outcome is set this method must not run
  // again - re-firing it (won→lost flip, double-submit, an idempotent webhook
  // retry) would re-evaluate the berth rule, rename the document folder, write
  // a duplicate audit row, re-emit the socket event and re-fire the Umami
  // event. Mirrors clearInterestOutcome's `if (!existing.outcome)` guard:
  // changing a recorded outcome requires clearing it first (which reopens the
  // deal), so the side effects only ever run on a genuine close transition.
  if (existing.outcome) {
    throw new ConflictError(
      'Interest already has an outcome. Clear the current outcome before setting a new one.',
    );
  }

  const oldOutcome = existing.outcome;
  const stageAtOutcome = existing.pipelineStage;

  const now = new Date();
  await db
    .update(interests)
    .set({
      outcome: data.outcome,
      outcomeReason: data.reason ?? null,
      outcomeAt: now,
      updatedAt: now,
    })
    .where(and(eq(interests.id, id), eq(interests.portId, portId)));

  void createAuditLog({
    userId: meta.userId,
    portId,
    // M-AU04: distinct verb so the audit filter / FTS surface it directly.
    action: 'outcome_set',
    entityType: 'interest',
    entityId: id,
    oldValue: { outcome: oldOutcome, pipelineStage: stageAtOutcome },
    newValue: { outcome: data.outcome, pipelineStage: stageAtOutcome, reason: data.reason },
    metadata: { stageAtOutcome },
    ipAddress: meta.ipAddress,
    userAgent: meta.userAgent,
  });

  emitToRoom(`port:${portId}`, 'interest:outcomeSet', {
    interestId: id,
    outcome: data.outcome,
    stageAtOutcome,
  });

  // Berth-rule on deal close (audit C2). Only a WON deal should drive the
  // berth to 'sold' (via interest_completed). Lost/cancelled deals fire
  // `deal_lost`, which frees the berth — previously every outcome reused
  // interest_completed and silently flipped the berth to 'sold'.
  void evaluateRule(data.outcome === 'won' ? 'interest_completed' : 'deal_lost', id, portId, meta);

  // Phase 2 nested-subfolders - rename the interest's document folder
  // to surface the outcome inline (e.g. "Deal A1-A3 (Won)"). Dynamic
  // import avoids the circular dep with document-folders.service which
  // already pulls from interests.service for the primary-berth label.
  void import('@/lib/services/document-folders.service')
    .then((m) =>
      m.renameInterestFolderForOutcome
        ? m.renameInterestFolderForOutcome(id, portId, data.outcome)
        : null,
    )
    .catch(() => {
      // Folder may not exist yet (first upload happens later) - silent.
    });

  // Phase 6 - CRM → Umami attribution. Fire a custom Umami event so
  // marketing can correlate inbound website traffic with the resulting
  // deal outcome. Dynamic import to avoid a circular service dep at
  // module-load time.
  void import('@/lib/services/umami.service').then(({ trackEvent }) =>
    trackEvent(portId, 'interest-outcome-set', {
      interestId: id,
      outcome: data.outcome,
      stageAtOutcome,
    }),
  );

  return { ok: true as const };
}

// Clears a terminal outcome and reopens the interest. Used when an outcome
// was set in error or a "lost" deal comes back to life.
export async function clearInterestOutcome(
  id: string,
  portId: string,
  data: ClearOutcomeInput,
  meta: AuditMeta,
) {
  const existing = await db.query.interests.findFirst({
    where: and(eq(interests.id, id), eq(interests.portId, portId)),
  });
  if (!existing) throw new NotFoundError('Interest');
  if (!existing.outcome) {
    throw new ValidationError('Interest has no outcome to clear');
  }

  // Reopen-stage logic:
  // - If the caller passed `data.reopenStage`, honor it (rep override).
  // - Else preserve the current stage - post-refactor setOutcome stops
  //   touching pipelineStage, so the deal already knows where it was
  //   when the rep closed it. Reopening should drop the rep back into
  //   that same column on the kanban.
  // L1: the dead `pipelineStage === 'completed' ? 'qualified'` branch is
  // removed (the 'completed' sentinel was dropped in the 9→7 migration).
  // Any legacy stage value still on the row is folded to its canonical
  // 7-stage equivalent via canonicalizeStage so a pre-migration
  // 'completed' row reopens to `contract` (its true pre-close stage) and
  // never re-enters the kanban with a non-canonical value.
  const reopenStage = data.reopenStage ?? canonicalizeStage(existing.pipelineStage);
  const now = new Date();
  await db
    .update(interests)
    .set({
      outcome: null,
      outcomeReason: null,
      outcomeAt: null,
      pipelineStage: reopenStage,
      updatedAt: now,
    })
    .where(and(eq(interests.id, id), eq(interests.portId, portId)));

  void createAuditLog({
    userId: meta.userId,
    portId,
    // M-AU04: distinct verb so the audit filter / FTS surface it directly.
    action: 'outcome_cleared',
    entityType: 'interest',
    entityId: id,
    oldValue: { outcome: existing.outcome, pipelineStage: existing.pipelineStage },
    newValue: { outcome: null, pipelineStage: reopenStage },
    ipAddress: meta.ipAddress,
    userAgent: meta.userAgent,
  });

  emitToRoom(`port:${portId}`, 'interest:outcomeCleared', { interestId: id });

  return { ok: true as const };
}

// ─── Archive / Restore ────────────────────────────────────────────────────────

export async function archiveInterest(id: string, portId: string, meta: AuditMeta) {
  const existing = await db.query.interests.findFirst({
    where: eq(interests.id, id),
  });

  if (!existing || existing.portId !== portId) {
    throw new NotFoundError('Interest');
  }

  // BR-014: Block archive if pending EOI/contract
  if (existing.eoiStatus === 'waiting_for_signatures' || existing.contractStatus === 'pending') {
    throw new ConflictError(
      'Cannot archive interest with pending documents. Cancel documents first.',
    );
  }

  // Resolve the primary berth BEFORE the soft-delete so the berth-rule and
  // next-in-line lookups still see the interest's junction rows. softDelete
  // toggles archivedAt; the junction isn't archived alongside it, but the
  // rule reads the primary via the junction which is unaffected.
  const primaryBerth = await getPrimaryBerth(id);

  await softDelete(interests, interests.id, id);

  void createAuditLog({
    userId: meta.userId,
    portId,
    action: 'archive',
    entityType: 'interest',
    entityId: id,
    ipAddress: meta.ipAddress,
    userAgent: meta.userAgent,
  });

  emitToRoom(`port:${portId}`, 'interest:archived', { interestId: id });

  // G-C4: fire the berth-rule (default mode 'suggest' for interest_archived).
  // G-I2: notify sales of the next-in-line interests on the released berth so
  // they can follow up - mirrors the client-archive flow but scoped to a
  // single interest's primary berth.
  if (primaryBerth) {
    void evaluateRule('interest_archived', id, portId, meta);

    // Build the next-in-line dossier: any other active interest linked to
    // the same berth that doesn't belong to this archived interest.
    void (async () => {
      try {
        const others = await db
          .select({
            interestId: interests.id,
            clientId: interests.clientId,
            clientName: clients.fullName,
            pipelineStage: interests.pipelineStage,
          })
          .from(interestBerths)
          .innerJoin(interests, eq(interestBerths.interestId, interests.id))
          .leftJoin(clients, eq(interests.clientId, clients.id))
          .where(
            and(
              activeInterestsWhere(portId),
              eq(interestBerths.berthId, primaryBerth.berthId),
              ne(interests.id, id),
            ),
          )
          .orderBy(desc(interests.updatedAt))
          .limit(10);

        const archivedClient = existing.clientId
          ? await db.query.clients.findFirst({ where: eq(clients.id, existing.clientId) })
          : null;

        await notifyNextInLine({
          portId,
          berthId: primaryBerth.berthId,
          mooringNumber: primaryBerth.mooringNumber ?? '',
          archivedClientName: archivedClient?.fullName ?? '(unknown client)',
          nextInLineInterests: others.map((o) => ({
            interestId: o.interestId,
            clientName: o.clientName,
            pipelineStage: o.pipelineStage,
          })),
        });
      } catch (err) {
        logger.error(
          { err, interestId: id, berthId: primaryBerth.berthId },
          'Failed to fire next-in-line notification on interest archive',
        );
      }
    })();
  }
}

export async function restoreInterest(id: string, portId: string, meta: AuditMeta) {
  const existing = await db.query.interests.findFirst({
    where: eq(interests.id, id),
  });

  if (!existing || existing.portId !== portId) {
    throw new NotFoundError('Interest');
  }

  await restore(interests, interests.id, id);

  void createAuditLog({
    userId: meta.userId,
    portId,
    action: 'restore',
    entityType: 'interest',
    entityId: id,
    ipAddress: meta.ipAddress,
    userAgent: meta.userAgent,
  });

  emitToRoom(`port:${portId}`, 'interest:updated', { interestId: id, changedFields: [] });
}

// ─── Set Tags ─────────────────────────────────────────────────────────────────

export async function setInterestTags(
  id: string,
  portId: string,
  tagIds: string[],
  meta: AuditMeta,
) {
  const existing = await db.query.interests.findFirst({
    where: eq(interests.id, id),
  });

  if (!existing || existing.portId !== portId) {
    throw new NotFoundError('Interest');
  }

  const result = await setEntityTags({
    joinTable: interestTags,
    entityColumn: interestTags.interestId,
    tagColumn: interestTags.tagId,
    entityId: id,
    portId,
    tagIds,
    meta,
    entityType: 'interest',
  });

  return { interestId: result.entityId, tagIds: result.tagIds };
}

// ─── Link / Unlink Berth ──────────────────────────────────────────────────────

export async function linkBerth(id: string, portId: string, berthId: string, meta: AuditMeta) {
  const existing = await db.query.interests.findFirst({
    where: eq(interests.id, id),
  });

  if (!existing || existing.portId !== portId) {
    throw new NotFoundError('Interest');
  }

  await assertInterestFksInPort(portId, { berthId });

  const previousPrimary = await getPrimaryBerth(id);
  const oldBerthId = previousPrimary?.berthId ?? null;

  await upsertInterestBerth(id, berthId, {
    isPrimary: true,
    isSpecificInterest: true,
    addedBy: meta.userId,
  });

  // Touch updatedAt so list/sort surfaces still reflect the change.
  const [updated] = await db
    .update(interests)
    .set({ updatedAt: new Date() })
    .where(and(eq(interests.id, id), eq(interests.portId, portId)))
    .returning();

  void createAuditLog({
    userId: meta.userId,
    portId,
    action: 'update',
    entityType: 'interest',
    entityId: id,
    oldValue: { berthId: oldBerthId },
    newValue: { berthId },
    metadata: { type: 'berth_linked' },
    ipAddress: meta.ipAddress,
    userAgent: meta.userAgent,
  });

  emitToRoom(`port:${portId}`, 'interest:berthLinked', { interestId: id, berthId });

  void import('@/lib/services/webhook-dispatch').then(({ dispatchWebhookEvent }) =>
    dispatchWebhookEvent(portId, 'interest:berthLinked', { interestId: id, berthId }),
  );

  return updated!;
}

export async function unlinkBerth(id: string, portId: string, meta: AuditMeta) {
  const existing = await db.query.interests.findFirst({
    where: eq(interests.id, id),
  });

  if (!existing || existing.portId !== portId) {
    throw new NotFoundError('Interest');
  }

  const previousPrimary = await getPrimaryBerth(id);
  const oldBerthId = previousPrimary?.berthId ?? null;

  if (oldBerthId) {
    await removeInterestBerth(id, oldBerthId, portId, meta);
  }

  const [updated] = await db
    .update(interests)
    .set({ updatedAt: new Date() })
    .where(and(eq(interests.id, id), eq(interests.portId, portId)))
    .returning();

  void createAuditLog({
    userId: meta.userId,
    portId,
    action: 'update',
    entityType: 'interest',
    entityId: id,
    oldValue: { berthId: oldBerthId },
    newValue: { berthId: null },
    metadata: { type: 'berth_unlinked' },
    ipAddress: meta.ipAddress,
    userAgent: meta.userAgent,
  });

  emitToRoom(`port:${portId}`, 'interest:berthUnlinked', {
    interestId: id,
    berthId: oldBerthId ?? '',
  });

  return updated!;
}

// ─── Stage Counts (for board) ────────────────────────────────────────────────

export async function getInterestStageCounts(portId: string) {
  // Kanban / board counts surface active deals only (no terminal
  // outcomes) - terminal rows belong on a separate /closed surface.
  const rows = await db
    .select({ stage: interests.pipelineStage, count: sql<number>`count(*)::int` })
    .from(interests)
    .where(activeInterestsWhere(portId))
    .groupBy(interests.pipelineStage);
  return Object.fromEntries(rows.map((r) => [r.stage, r.count]));
}