'use client';

import { type DetailTab } from '@/components/shared/detail-layout';
import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
import { TagBadge } from '@/components/shared/tag-badge';
import { BerthReservationsTab } from './berth-reservations-tab';
import { BerthInterestsTab } from './berth-interests-tab';
import { BerthInterestPulse } from './berth-interest-pulse';

type BerthData = {
  id: string;
  mooringNumber: string;
  area: string | null;
  status: string;
  lengthFt: string | null;
  lengthM: string | null;
  widthFt: string | null;
  widthM: string | null;
  draftFt: string | null;
  draftM: string | null;
  widthIsMinimum: boolean | null;
  nominalBoatSize: string | null;
  nominalBoatSizeM: string | null;
  waterDepth: string | null;
  waterDepthM: string | null;
  waterDepthIsMinimum: boolean | null;
  sidePontoon: string | null;
  powerCapacity: string | null;
  voltage: string | null;
  mooringType: string | null;
  cleatType: string | null;
  cleatCapacity: string | null;
  bollardType: string | null;
  bollardCapacity: string | null;
  access: string | null;
  price: string | null;
  priceCurrency: string;
  bowFacing: string | null;
  berthApproved: boolean | null;
  tenureType: string;
  tenureYears: number | null;
  tenureStartDate: string | null;
  tenureEndDate: string | null;
  statusLastChangedReason: string | null;
  statusLastModified: string | null;
  tags: Array<{ id: string; name: string; color: string }>;
};

function SpecRow({ label, value }: { label: string; value: React.ReactNode }) {
  if (!value && value !== 0 && value !== false) return null;
  // Mobile-first: stack vertically with label on top so long values
  // (e.g. "206.69 ft / 62.99 m") never clip at the right edge.
  // From `sm` (>=640px) up: switch to the original two-column layout.
  return (
    <div className="flex flex-col gap-0.5 py-2 text-sm sm:flex-row sm:items-baseline sm:justify-between sm:gap-3">
      <span className="text-muted-foreground">{label}</span>
      <span className="font-medium sm:max-w-[60%] sm:text-right">{value}</span>
    </div>
  );
}

function OverviewTab({ berth }: { berth: BerthData }) {
  // Round to at most 2 decimals; trim trailing zeros so "5.00" -> "5".
  const fmt = (v: string | null, fractionDigits = 2): string | null => {
    if (v == null || v === '') return null;
    const n = Number(v);
    if (Number.isNaN(n)) return v;
    return n.toLocaleString('en-US', {
      minimumFractionDigits: 0,
      maximumFractionDigits: fractionDigits,
    });
  };

  const formatDim = (ft: string | null, m: string | null) => {
    const parts = [];
    const ftFmt = fmt(ft);
    const mFmt = fmt(m);
    if (ftFmt) parts.push(`${ftFmt} ft`);
    if (mFmt) parts.push(`${mFmt} m`);
    return parts.length > 0 ? parts.join(' / ') : null;
  };

  const formatNominalBoatSize = (ft: string | null, m: string | null): string | null => {
    const ftFmt = fmt(ft, 0);
    const mFmt = fmt(m);
    const parts: string[] = [];
    if (ftFmt) parts.push(`${ftFmt} ft`);
    if (mFmt) parts.push(`${mFmt} m`);
    return parts.length > 0 ? parts.join(' / ') : null;
  };

  const formatPower = (kw: string | null) => {
    const v = fmt(kw, 0);
    return v ? `${v} kW` : null;
  };

  const formatVoltage = (v: string | null) => {
    const fv = fmt(v, 0);
    return fv ? `${fv} V` : null;
  };

  const price = berth.price
    ? new Intl.NumberFormat('en-US', {
        style: 'currency',
        currency: berth.priceCurrency || 'USD',
        maximumFractionDigits: 0,
      }).format(Number(berth.price))
    : null;

  return (
    <div className="space-y-6">
      {/* Sales pulse — top-of-page so reps doing berth-level triage can see
          who's interested + how warm without clicking into the Interests tab. */}
      <BerthInterestPulse berthId={berth.id} />

      <div className="grid grid-cols-1 md:grid-cols-2 gap-6">
        {/* Specifications */}
        <Card>
          <CardHeader className="pb-3">
            <CardTitle className="text-sm font-medium">Specifications</CardTitle>
          </CardHeader>
          <CardContent className="pt-0 divide-y">
            <SpecRow label="Length" value={formatDim(berth.lengthFt, berth.lengthM)} />
            <SpecRow
              label="Width"
              value={
                formatDim(berth.widthFt, berth.widthM)
                  ? `${formatDim(berth.widthFt, berth.widthM)}${berth.widthIsMinimum ? ' (min)' : ''}`
                  : null
              }
            />
            <SpecRow label="Draft" value={formatDim(berth.draftFt, berth.draftM)} />
            <SpecRow
              label="Nominal Boat Size"
              value={formatNominalBoatSize(berth.nominalBoatSize, berth.nominalBoatSizeM)}
            />
            <SpecRow
              label="Water Depth"
              value={
                berth.waterDepth || berth.waterDepthM
                  ? `${formatDim(berth.waterDepth, berth.waterDepthM)}${berth.waterDepthIsMinimum ? ' (min)' : ''}`
                  : null
              }
            />
            <SpecRow label="Mooring Type" value={berth.mooringType} />
            <SpecRow label="Side Pontoon" value={berth.sidePontoon} />
            <SpecRow label="Bow Facing" value={berth.bowFacing} />
            <SpecRow label="Access" value={berth.access} />
            <SpecRow label="Approved" value={berth.berthApproved ? 'Yes' : null} />
          </CardContent>
        </Card>

        {/* Infrastructure & Pricing */}
        <div className="space-y-6">
          <Card>
            <CardHeader className="pb-3">
              <CardTitle className="text-sm font-medium">Infrastructure</CardTitle>
            </CardHeader>
            <CardContent className="pt-0 divide-y">
              <SpecRow label="Power Capacity" value={formatPower(berth.powerCapacity)} />
              <SpecRow label="Voltage" value={formatVoltage(berth.voltage)} />
              <SpecRow label="Cleat Type" value={berth.cleatType} />
              <SpecRow label="Cleat Capacity" value={berth.cleatCapacity} />
              <SpecRow label="Bollard Type" value={berth.bollardType} />
              <SpecRow label="Bollard Capacity" value={berth.bollardCapacity} />
            </CardContent>
          </Card>

          <Card>
            <CardHeader className="pb-3">
              <CardTitle className="text-sm font-medium">Tenure & Pricing</CardTitle>
            </CardHeader>
            <CardContent className="pt-0 divide-y">
              <SpecRow
                label="Tenure Type"
                value={berth.tenureType === 'permanent' ? 'Permanent' : 'Fixed Term'}
              />
              {berth.tenureType === 'fixed_term' && (
                <>
                  <SpecRow label="Years" value={berth.tenureYears} />
                  <SpecRow label="Start Date" value={berth.tenureStartDate} />
                  <SpecRow label="End Date" value={berth.tenureEndDate} />
                </>
              )}
              <SpecRow label="Price" value={price} />
            </CardContent>
          </Card>

          {berth.tags.length > 0 && (
            <Card>
              <CardHeader className="pb-3">
                <CardTitle className="text-sm font-medium">Tags</CardTitle>
              </CardHeader>
              <CardContent className="pt-0">
                <div className="flex flex-wrap gap-1.5">
                  {berth.tags.map((tag) => (
                    <TagBadge key={tag.id} name={tag.name} color={tag.color} />
                  ))}
                </div>
              </CardContent>
            </Card>
          )}
        </div>
      </div>
    </div>
  );
}

function StubTab({ label }: { label: string }) {
  return (
    <div className="flex flex-col items-center justify-center rounded-lg border border-dashed p-12 text-center">
      <p className="text-muted-foreground">{label} coming soon</p>
    </div>
  );
}

export function buildBerthTabs(berth: BerthData): DetailTab[] {
  return [
    {
      id: 'overview',
      label: 'Overview',
      content: <OverviewTab berth={berth} />,
    },
    {
      id: 'interests',
      label: 'Interests',
      content: <BerthInterestsTab berthId={berth.id} />,
    },
    {
      id: 'reservations',
      label: 'Reservations',
      content: <BerthReservationsTab berthId={berth.id} />,
    },
    {
      id: 'waiting-list',
      label: 'Waiting List',
      content: <StubTab label="Waiting List" />,
    },
    {
      id: 'maintenance',
      label: 'Maintenance Log',
      content: <StubTab label="Maintenance Log" />,
    },
    {
      id: 'activity',
      label: 'Activity',
      content: <StubTab label="Activity" />,
    },
  ];
}