import { PrismaClient } from '@prisma/client';

const prisma = new PrismaClient();

const DEMO_SLUG = 'alpine-explorer-2026';

async function main() {
  // Idempotent — skip if already seeded
  const existing = await prisma.trip.findUnique({ where: { slug: DEMO_SLUG } });
  if (existing) {
    console.log(`Demo trip "${DEMO_SLUG}" already exists (id: ${existing.id}). Skipping.`);
    return;
  }

  console.log('Seeding demo trip: Alpine Explorer 2026...');

  // Create demo users
  const memberData = [
    { name: 'Alex', did: 'did:demo:alex-001' },
    { name: 'Sam', did: 'did:demo:sam-002' },
    { name: 'Jordan', did: 'did:demo:jordan-003' },
    { name: 'Riley', did: 'did:demo:riley-004' },
    { name: 'Casey', did: 'did:demo:casey-005' },
    { name: 'Morgan', did: 'did:demo:morgan-006' },
  ];

  const users = await Promise.all(
    memberData.map((m) =>
      prisma.user.upsert({
        where: { did: m.did },
        update: { username: m.name },
        create: { did: m.did, username: m.name },
      })
    )
  );

  // Create trip
  const trip = await prisma.trip.create({
    data: {
      title: 'Alpine Explorer 2026',
      slug: DEMO_SLUG,
      description: 'Chamonix → Zermatt → Dolomites',
      rawInput:
        '2 weeks in the Alps with 6 friends. Hiking, via ferrata, mountain biking, kayaking, paragliding. Mix of camping, huts, and Airbnb. Budget ~€4500.',
      startDate: new Date('2026-07-06'),
      endDate: new Date('2026-07-20'),
      budgetTotal: 4500,
      budgetCurrency: 'EUR',
      status: 'PLANNING',
    },
  });

  // Add collaborators
  await prisma.tripCollaborator.createMany({
    data: users.map((u, i) => ({
      userId: u.id,
      tripId: trip.id,
      role: i === 0 ? 'OWNER' : 'MEMBER',
    })),
  });

  // Create destinations
  const destinations = await Promise.all([
    prisma.destination.create({
      data: {
        tripId: trip.id,
        name: 'Chamonix',
        country: 'France',
        lat: 45.9237,
        lng: 6.8694,
        arrivalDate: new Date('2026-07-06'),
        departureDate: new Date('2026-07-11'),
        notes: 'Base camp for Mont Blanc region. Book mountain hut in advance.',
        sortOrder: 0,
      },
    }),
    prisma.destination.create({
      data: {
        tripId: trip.id,
        name: 'Zermatt',
        country: 'Switzerland',
        lat: 46.0207,
        lng: 7.7491,
        arrivalDate: new Date('2026-07-12'),
        departureDate: new Date('2026-07-16'),
        notes: 'Car-free village. Take train from Täsch. Matterhorn views!',
        sortOrder: 1,
      },
    }),
    prisma.destination.create({
      data: {
        tripId: trip.id,
        name: 'Dolomites',
        country: 'Italy',
        lat: 46.4102,
        lng: 11.8440,
        arrivalDate: new Date('2026-07-17'),
        departureDate: new Date('2026-07-20'),
        notes: 'Tre Cime di Lavaredo circuit is a must. Lake Braies for kayaking.',
        sortOrder: 2,
      },
    }),
  ]);

  // Create itinerary items (one per trip day)
  const itineraryItems = [
    { date: '2026-07-06', title: 'Fly to Geneva', category: 'FLIGHT', destIdx: 0 },
    { date: '2026-07-07', title: 'Chamonix check-in', category: 'ACCOMMODATION', destIdx: 0 },
    { date: '2026-07-08', title: 'Mont Blanc hike', category: 'ACTIVITY', destIdx: 0 },
    { date: '2026-07-09', title: 'Rest / explore town', category: 'FREE_TIME', destIdx: 0 },
    { date: '2026-07-10', title: 'Mer de Glace trek', category: 'ACTIVITY', destIdx: 0 },
    { date: '2026-07-11', title: 'Via ferrata', category: 'ACTIVITY', destIdx: 0 },
    { date: '2026-07-12', title: 'Train to Zermatt', category: 'TRANSPORT', destIdx: 1 },
    { date: '2026-07-13', title: 'Matterhorn viewpoint', category: 'ACTIVITY', destIdx: 1 },
    { date: '2026-07-14', title: 'Mountain biking', category: 'ACTIVITY', destIdx: 1 },
    { date: '2026-07-15', title: 'Gorner Gorge hike', category: 'ACTIVITY', destIdx: 1 },
    { date: '2026-07-16', title: 'Paragliding!', category: 'ACTIVITY', destIdx: 1 },
    { date: '2026-07-17', title: 'Travel to Dolomites', category: 'TRANSPORT', destIdx: 2 },
    { date: '2026-07-18', title: 'Tre Cime circuit', category: 'ACTIVITY', destIdx: 2 },
    { date: '2026-07-19', title: 'Lake Braies kayaking', category: 'ACTIVITY', destIdx: 2 },
    { date: '2026-07-20', title: 'Fly home', category: 'FLIGHT', destIdx: 2 },
  ];

  await prisma.itineraryItem.createMany({
    data: itineraryItems.map((item, i) => ({
      tripId: trip.id,
      destinationId: destinations[item.destIdx].id,
      title: item.title,
      date: new Date(item.date),
      category: item.category as never,
      sortOrder: i,
    })),
  });

  // Create expenses
  const expenseData = [
    { desc: 'Geneva → Chamonix shuttle', who: 0, amount: 186, cat: 'TRANSPORT' },
    { desc: 'Mountain hut (2 nights)', who: 1, amount: 420, cat: 'ACCOMMODATION' },
    { desc: 'Via ferrata gear rental', who: 2, amount: 144, cat: 'ACTIVITY' },
    { desc: 'Groceries (Zermatt)', who: 4, amount: 93, cat: 'FOOD' },
    { desc: 'Paragliding deposit', who: 3, amount: 360, cat: 'ACTIVITY' },
  ];

  await prisma.expense.createMany({
    data: expenseData.map((e) => ({
      tripId: trip.id,
      paidById: users[e.who].id,
      description: e.desc,
      amount: e.amount,
      currency: 'EUR',
      category: e.cat as never,
      date: new Date('2026-07-08'),
      splitType: 'EQUAL',
    })),
  });

  // Create packing items
  const packingData = [
    { name: 'Hiking boots (broken in!)', cat: 'Footwear', packed: true },
    { name: 'Rain jacket & layers', cat: 'Clothing', packed: true },
    { name: 'Headlamp + spare batteries', cat: 'Gear', packed: true },
    { name: 'First aid kit', cat: 'Safety', packed: false },
    { name: 'Sunscreen SPF 50', cat: 'Personal', packed: true },
    { name: 'Trekking poles', cat: 'Gear', packed: false },
    { name: 'Refillable water bottle', cat: 'Gear', packed: true },
    { name: 'Via ferrata gloves', cat: 'Gear', packed: false },
  ];

  await prisma.packingItem.createMany({
    data: packingData.map((p, i) => ({
      tripId: trip.id,
      addedById: users[0].id,
      name: p.name,
      category: p.cat,
      packed: p.packed,
      sortOrder: i,
    })),
  });

  console.log(`Demo trip created: id=${trip.id}, slug=${trip.slug}`);
  console.log(`  - ${users.length} collaborators`);
  console.log(`  - ${destinations.length} destinations`);
  console.log(`  - ${itineraryItems.length} itinerary items`);
  console.log(`  - ${expenseData.length} expenses`);
  console.log(`  - ${packingData.length} packing items`);
}

main()
  .catch((e) => {
    console.error('Seed failed:', e);
    process.exit(1);
  })
  .finally(() => prisma.$disconnect());