import { NextRequest, NextResponse } from "next/server";
import { requireFamily } from "@/lib/auth";
import { sql } from "@/db";
import { GARMENT_CATEGORIES } from "@/db/schema/wardrobe";

// GET /api/garments?childId=&status=active&category=&sizeLabel=&season=
export async function GET(req: NextRequest) {
  const auth = await requireFamily();
  if (!auth.success) return NextResponse.json({ error: auth.error }, { status: auth.status });

  const familyId = auth.session!.familyId!;
  const { searchParams } = new URL(req.url);
  const childId = searchParams.get("childId");
  const status = searchParams.get("status") || "active";
  const category = searchParams.get("category");
  const sizeLabel = searchParams.get("sizeLabel");
  const season = searchParams.get("season");

  if (!childId) return NextResponse.json({ error: "childId required" }, { status: 400 });

  // Build filter conditions using raw SQL for array contains
  let rows;
  if (category && sizeLabel && season) {
    rows = await sql`
      SELECT * FROM garments
      WHERE family_id = ${familyId} AND child_id = ${childId} AND status = ${status}
        AND category = ${category} AND size_label = ${sizeLabel}
        AND ${season} = ANY(seasons)
      ORDER BY created_at DESC`;
  } else if (category && sizeLabel) {
    rows = await sql`
      SELECT * FROM garments
      WHERE family_id = ${familyId} AND child_id = ${childId} AND status = ${status}
        AND category = ${category} AND size_label = ${sizeLabel}
      ORDER BY created_at DESC`;
  } else if (category && season) {
    rows = await sql`
      SELECT * FROM garments
      WHERE family_id = ${familyId} AND child_id = ${childId} AND status = ${status}
        AND category = ${category} AND ${season} = ANY(seasons)
      ORDER BY created_at DESC`;
  } else if (sizeLabel && season) {
    rows = await sql`
      SELECT * FROM garments
      WHERE family_id = ${familyId} AND child_id = ${childId} AND status = ${status}
        AND size_label = ${sizeLabel} AND ${season} = ANY(seasons)
      ORDER BY created_at DESC`;
  } else if (category) {
    rows = await sql`
      SELECT * FROM garments
      WHERE family_id = ${familyId} AND child_id = ${childId} AND status = ${status}
        AND category = ${category}
      ORDER BY created_at DESC`;
  } else if (sizeLabel) {
    rows = await sql`
      SELECT * FROM garments
      WHERE family_id = ${familyId} AND child_id = ${childId} AND status = ${status}
        AND size_label = ${sizeLabel}
      ORDER BY created_at DESC`;
  } else if (season) {
    rows = await sql`
      SELECT * FROM garments
      WHERE family_id = ${familyId} AND child_id = ${childId} AND status = ${status}
        AND ${season} = ANY(seasons)
      ORDER BY created_at DESC`;
  } else {
    rows = await sql`
      SELECT * FROM garments
      WHERE family_id = ${familyId} AND child_id = ${childId} AND status = ${status}
      ORDER BY created_at DESC`;
  }

  const baseUrl = process.env.R2_PUBLIC_URL || `https://pub-${process.env.R2_ACCOUNT_ID}.r2.dev`;

  return NextResponse.json({
    success: true,
    items: rows.map(g => toDto(g, baseUrl)),
  });
}

// POST /api/garments
export async function POST(req: NextRequest) {
  const auth = await requireFamily();
  if (!auth.success) return NextResponse.json({ error: auth.error }, { status: auth.status });

  const familyId = auth.session!.familyId!;

  let body: {
    childId?: string;
    name?: string;
    category?: string;
    sizeLabel?: string;
    colors?: string[];
    seasons?: string[];
    occasionTags?: string[];
    imageKey?: string;
    thumbKey?: string;
    status?: string;
    acquiredVia?: string;
    giftFrom?: string;
    visionMetadata?: unknown;
  };
  try {
    body = await req.json();
  } catch {
    return NextResponse.json({ error: "Invalid JSON" }, { status: 400 });
  }

  const { childId, name, category, sizeLabel, colors = [], seasons = [],
    occasionTags = [], imageKey, thumbKey, acquiredVia, giftFrom, visionMetadata } = body;

  if (!childId || !category || !sizeLabel || !imageKey || !thumbKey) {
    return NextResponse.json({ error: "childId, category, sizeLabel, imageKey, thumbKey required" }, { status: 400 });
  }

  if (!GARMENT_CATEGORIES.includes(category as never)) {
    return NextResponse.json({ error: "Invalid category" }, { status: 400 });
  }

  // Verify child belongs to family
  const childCheck = await sql`SELECT id FROM children WHERE id = ${childId} AND family_id = ${familyId} LIMIT 1`;
  if (!childCheck[0]) return NextResponse.json({ error: "Child not found" }, { status: 404 });

  const rows = await sql`
    INSERT INTO garments
      (family_id, child_id, name, category, size_label, colors, seasons,
       occasion_tags, image_key, thumb_key, status, acquired_via, gift_from, vision_metadata)
    VALUES
      (${familyId}, ${childId}, ${name || null}, ${category}, ${sizeLabel},
       ${colors}, ${seasons}, ${occasionTags}, ${imageKey}, ${thumbKey},
       'active', ${acquiredVia || null}, ${giftFrom || null},
       ${visionMetadata ? JSON.stringify(visionMetadata) : null})
    RETURNING *`;

  const baseUrl = process.env.R2_PUBLIC_URL || `https://pub-${process.env.R2_ACCOUNT_ID}.r2.dev`;
  return NextResponse.json({ success: true, item: toDto(rows[0], baseUrl) }, { status: 201 });
}

function toDto(g: Record<string, unknown>, baseUrl: string) {
  return {
    id: g.id,
    familyId: g.family_id,
    childId: g.child_id,
    name: g.name,
    category: g.category,
    sizeLabel: g.size_label,
    colors: g.colors || [],
    seasons: g.seasons || [],
    occasionTags: g.occasion_tags || [],
    imageKey: g.image_key,
    thumbKey: g.thumb_key,
    imageUrl: `${baseUrl}/${g.image_key}`,
    thumbUrl: `${baseUrl}/${g.thumb_key}`,
    status: g.status,
    acquiredVia: g.acquired_via,
    giftFrom: g.gift_from,
    createdAt: g.created_at,
    updatedAt: g.updated_at,
  };
}