import { PrismaClient, Prisma } from '@prisma/client';
import * as bcrypt from 'bcrypt';
import * as fs from 'fs';
import * as path from 'path';

const prisma = new PrismaClient();

async function main() {
  console.log('Starting database seed...');

  // Clear existing data (order: children first)
  await prisma.chatMessage.deleteMany();
  await prisma.chatSession.deleteMany();
  await prisma.estimateShare.deleteMany();
  await prisma.estimateTotal.deleteMany();
  await prisma.estimateItem.deleteMany();
  await prisma.estimate.deleteMany();
  await prisma.user.deleteMany();
  await prisma.priceItem.deleteMany();
  await prisma.priceTable.deleteMany();
  await prisma.priceBook.deleteMany();
  await prisma.coefficient.deleteMany();
  await prisma.inflationIndex.deleteMany();
  await prisma.surveyDirection.deleteMany();
  await prisma.setting.deleteMany();

  console.log('Cleared existing data');

  // Admin user (логин: its@info.ru, пароль: Nemo348ax@)
  const adminPasswordHash = await bcrypt.hash('Nemo348ax@', 10);
  await prisma.user.create({
    data: {
      email: 'its@info.ru',
      passwordHash: adminPasswordHash,
      name: 'Админ',
    },
  });
  console.log('Created admin user (its@info.ru / Nemo348ax@)');

  // Demo user for development (email: demo@example.com, password: demo)
  const demoPasswordHash = await bcrypt.hash('demo', 10);
  await prisma.user.create({
    data: {
      email: 'demo@example.com',
      passwordHash: demoPasswordHash,
      name: 'Демо',
    },
  });
  console.log('Created demo user (demo@example.com / demo)');

  // Seed Survey Directions
  const directions = await Promise.all([
    prisma.surveyDirection.create({
      data: {
        code: 'geodesy',
        name: 'Инженерно-геодезические изыскания',
        shortName: 'Геодезия',
      },
    }),
    prisma.surveyDirection.create({
      data: {
        code: 'geology',
        name: 'Инженерно-геологические изыскания',
        shortName: 'Геология',
      },
    }),
    prisma.surveyDirection.create({
      data: {
        code: 'ecology',
        name: 'Инженерно-экологические изыскания',
        shortName: 'Экология',
      },
    }),
    prisma.surveyDirection.create({
      data: {
        code: 'hydrology',
        name: 'Инженерно-гидрометеорологические изыскания',
        shortName: 'Гидрометеорология',
      },
    }),
  ]);

  console.log(`Created ${directions.length} survey directions`);

  // Seed Inflation Indices
  const inflationIndices = await Promise.all([
    prisma.inflationIndex.create({
      data: {
        baseDate: new Date('1991-01-01'),
        effectiveFrom: new Date('2015-08-13'),
        indexValue: new Prisma.Decimal(76.24),
        documentRef: 'Письмо Минстроя и ЖКХ России № 25760-ЮР/08 от 13.08.2015г.',
        isActive: true,
      },
    }),
    prisma.inflationIndex.create({
      data: {
        baseDate: new Date('2001-01-01'),
        effectiveFrom: new Date('2015-08-13'),
        indexValue: new Prisma.Decimal(6.70),
        documentRef: 'Письмо Минстроя и ЖКХ России № 25760-ЮР/08 от 13.08.2015г.',
        isActive: true,
      },
    }),
  ]);

  console.log(`Created ${inflationIndices.length} inflation indices`);

  // Seed Coefficients
  const coefficients = [
    // Regional coefficients
    { type: 'regional', code: 'reg-1.08', name: 'Районный коэффициент 1.08', value: 1.08, description: 'К заработной плате 1.15' },
    { type: 'regional', code: 'reg-1.10', name: 'Районный коэффициент 1.10', value: 1.10, description: 'К заработной плате 1.20' },
    { type: 'regional', code: 'reg-1.15', name: 'Районный коэффициент 1.15', value: 1.15, description: 'К заработной плате 1.30' },
    
    // Company coefficients
    { type: 'company', code: 'gazprom-544', name: 'Коэффициент ОАО «Газпром»', value: 1.00, description: '№544 от 26.12.2013 г.' },
    { type: 'company', code: 'geovector', name: 'Коэффициент ООО «ГеоВектор»', value: 0.2092, description: 'Коэффициент компании' },
    
    // Special coefficients
    { type: 'special', code: 'computer-tech', name: 'Компьютерные технологии', value: 1.20, description: 'При выполнении камеральных работ с применением компьютерных технологий' },
    { type: 'special', code: 'night-work', name: 'Ночные работы', value: 1.35, description: 'При работе в ночное время (22:00-06:00)' },
    { type: 'special', code: 'special-regime', name: 'Специальный режим', value: 1.25, description: 'Территории со специальным режимом' },
  ];

  for (const coef of coefficients) {
    await prisma.coefficient.create({
      data: {
        type: coef.type,
        code: coef.code,
        name: coef.name,
        value: new Prisma.Decimal(coef.value),
        description: coef.description,
      },
    });
  }

  console.log(`Created ${coefficients.length} coefficients`);

  // Seed Settings
  const settings = [
    { key: 'default_executor', value: 'ООО "ГеоВектор"', type: 'string', category: 'company', label: 'Исполнитель по умолчанию' },
    { key: 'default_vat_rate', value: '20', type: 'number', category: 'company', label: 'Ставка НДС по умолчанию (%)' },
    { key: 'company_coefficient', value: '0.2092', type: 'number', category: 'company', label: 'Коэффициент компании' },
    { key: 'ai_provider', value: 'iieasy', type: 'string', category: 'ai', label: 'AI провайдер' },
    { key: 'iieasy_model', value: 'google/gemma-3n-e4b', type: 'string', category: 'ai', label: 'Модель iieasy' },
    { key: 'lmstudio_url', value: 'http://localhost:1234/v1', type: 'string', category: 'ai', label: 'URL LM Studio' },
  ];

  for (const setting of settings) {
    await prisma.setting.create({ data: setting });
  }

  console.log(`Created ${settings.length} settings`);

  // Load and seed price books from JSON files
  const dataDir = path.join(__dirname, '../../data/price-books');
  
  // Load Geodesy price book
  const geodesyPath = path.join(dataDir, 'geodesy-2004.json');
  if (fs.existsSync(geodesyPath)) {
    const geodesyData = JSON.parse(fs.readFileSync(geodesyPath, 'utf-8'));
    await seedPriceBook(geodesyData);
    console.log('Loaded geodesy-2004 price book');
  }

  // Load Geology price book
  const geologyPath = path.join(dataDir, 'geology-ecology-1999.json');
  if (fs.existsSync(geologyPath)) {
    const geologyData = JSON.parse(fs.readFileSync(geologyPath, 'utf-8'));
    await seedPriceBook(geologyData);
    console.log('Loaded geology-ecology-1999 price book');
  }

  console.log('Database seeding completed!');
}

async function seedPriceBook(data: any) {
  const priceBook = await prisma.priceBook.create({
    data: {
      code: data.priceBook.code,
      name: data.priceBook.name,
      baseDate: new Date(data.priceBook.baseDate),
      approvedBy: data.priceBook.approvedBy,
      effectiveDate: data.priceBook.effectiveDate ? new Date(data.priceBook.effectiveDate) : null,
    },
  });

  for (const table of data.tables) {
    const priceTable = await prisma.priceTable.create({
      data: {
        priceBookId: priceBook.id,
        tableNumber: table.tableNumber,
        name: table.name,
        unit: table.unit,
        notes: table.notes || null,
      },
    });

    for (const item of table.items) {
      await prisma.priceItem.create({
        data: {
          priceBookId: priceBook.id,
          priceTableId: priceTable.id,
          paragraph: item.paragraph,
          workType: item.workType || item.networkType || item.type || `Таблица ${table.tableNumber}`,
          description: item.description || null,
          priceField1: item.category1Field ?? item.cat1 ?? item.undevelopedField ?? null,
          priceOffice1: item.category1Office ?? item.undevelopedOffice ?? null,
          priceField2: item.category2Field ?? item.cat2 ?? item.builtUpField ?? null,
          priceOffice2: item.category2Office ?? item.builtUpOffice ?? null,
          priceField3: item.category3Field ?? item.cat3 ?? item.industrialField ?? null,
          priceOffice3: item.category3Office ?? item.industrialOffice ?? null,
          priceSimple: item.price ?? item.fieldPrice ?? null,
          attributes: {
            scale: item.scale,
            category: item.category,
            reliefHeight: item.reliefHeight,
            depth: item.depth,
            diameter: item.diameter,
            accuracy: item.accuracy,
            passability: item.passability,
            ...item,
          },
        },
      });
    }
  }
}

main()
  .catch((e) => {
    console.error(e);
    process.exit(1);
  })
  .finally(async () => {
    await prisma.$disconnect();
  });