/**
 * Client groups (CM-1) - first-class mailing/segment groups for clients.
 *
 * A `client_groups` row is a named, per-port group (e.g. a mailing list).
 * `client_group_members` is the M2M join to `clients`. Membership carries its
 * own `port_id` for defense-in-depth tenant isolation (same doctrine as the
 * document-folders aggregated projection - port_id at every join).
 *
 * Optional Mailchimp mapping lives on the group row: `mailchimpTag` is the
 * tag/segment name pushed to the port's single Mailchimp audience. Null until
 * an admin wires Mailchimp up (the integration is inert without creds).
 */

import { sql } from 'drizzle-orm';
import { index, pgTable, primaryKey, text, timestamp, uniqueIndex } from 'drizzle-orm/pg-core';

import { clients } from './clients';
import { ports } from './ports';

export const clientGroups = pgTable(
  'client_groups',
  {
    id: text('id')
      .primaryKey()
      .$defaultFn(() => crypto.randomUUID()),
    portId: text('port_id')
      .notNull()
      .references(() => ports.id, { onDelete: 'cascade' }),
    name: text('name').notNull(),
    description: text('description'),
    /** Chip color in the CRM UI. */
    color: text('color').notNull().default('#6B7280'),
    /** CM-1 Mailchimp: the tag/segment name this group maps to in the port's
     *  single Mailchimp audience. Null = not synced. */
    mailchimpTag: text('mailchimp_tag'),
    archivedAt: timestamp('archived_at', { withTimezone: true }),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
    updatedAt: timestamp('updated_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (table) => [
    index('idx_client_groups_port').on(table.portId),
    // Per-port, case-insensitive name uniqueness among non-archived groups.
    uniqueIndex('idx_client_groups_port_name')
      .on(table.portId, sql`lower(${table.name})`)
      .where(sql`${table.archivedAt} IS NULL`),
  ],
);

export const clientGroupMembers = pgTable(
  'client_group_members',
  {
    groupId: text('group_id')
      .notNull()
      .references(() => clientGroups.id, { onDelete: 'cascade' }),
    clientId: text('client_id')
      .notNull()
      .references(() => clients.id, { onDelete: 'cascade' }),
    portId: text('port_id')
      .notNull()
      .references(() => ports.id, { onDelete: 'cascade' }),
    createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
  },
  (table) => [
    primaryKey({ columns: [table.groupId, table.clientId] }),
    index('idx_cgm_client').on(table.clientId),
    index('idx_cgm_port').on(table.portId),
  ],
);

export type ClientGroup = typeof clientGroups.$inferSelect;
export type NewClientGroup = typeof clientGroups.$inferInsert;
export type ClientGroupMember = typeof clientGroupMembers.$inferSelect;
export type NewClientGroupMember = typeof clientGroupMembers.$inferInsert;