import { PrismaClient, UserRole, UserStatus, AuthProvider, FieldType } from '@prisma/client';
import { PrismaPg } from '@prisma/adapter-pg';
import { Pool } from 'pg';
import * as argon2 from 'argon2';

async function main() {
  const connectionString = process.env.DATABASE_URL;
  const pool = new Pool({ connectionString });
  const adapter = new PrismaPg(pool);

  const prisma = new PrismaClient({ adapter });

  console.log('🌱 Starting database seeding...\n');

  // =============================================
  // Seed Agent Types
  // =============================================
  console.log('📋 Seeding Agent Types...');

  const agentTypes = [
    {
      name: 'Professional',
      description: 'Licensed real estate professionals',
      icon: 'briefcase',
      sortOrder: 1,
    },
    {
      name: 'Lender',
      description: 'Mortgage and loan specialists',
      icon: 'bank',
      sortOrder: 2,
    },
  ];

  for (const agentType of agentTypes) {
    const existing = await prisma.agentType.findUnique({
      where: { name: agentType.name },
    });

    if (existing) {
      console.log(`   ⚠️  Agent type "${agentType.name}" already exists`);
    } else {
      await prisma.agentType.create({
        data: agentType,
      });
      console.log(`   ✅ Created agent type: ${agentType.name}`);
    }
  }

  console.log('');

  // =============================================
  // Seed Default Profile Sections & Fields
  // =============================================
  console.log('📋 Seeding Default Profile Sections...');

  // Define default system sections with their fields
  const defaultSections = [
    {
      name: 'Basic Information',
      slug: 'basic-information',
      description: 'Basic profile information',
      icon: 'user',
      sortOrder: 1,
      isActive: true,
      isGlobal: true,
      isSystem: true,
      fields: [
        {
          name: 'First Name',
          slug: 'first_name',
          fieldType: FieldType.TEXT,
          description: 'Your first name',
          placeholder: 'Enter your first name',
          sortOrder: 1,
          isActive: true,
          isRequired: true,
          isSearchableOnly: false,
        },
        {
          name: 'Last Name',
          slug: 'last_name',
          fieldType: FieldType.TEXT,
          description: 'Your last name',
          placeholder: 'Enter your last name',
          sortOrder: 2,
          isActive: true,
          isRequired: true,
          isSearchableOnly: false,
        },
      ],
    },
    {
      name: 'Contact Information',
      slug: 'contact-information',
      description: 'Contact details',
      icon: 'phone',
      sortOrder: 2,
      isActive: true,
      isGlobal: true,
      isSystem: true,
      fields: [
        {
          name: 'Email Address',
          slug: 'email_address',
          fieldType: FieldType.TEXT,
          description: 'Your contact email address',
          placeholder: 'Enter your email address',
          sortOrder: 1,
          isActive: true,
          isRequired: true,
          isSearchableOnly: false,
        },
        {
          name: 'Phone Number',
          slug: 'phone_number',
          fieldType: FieldType.TEXT,
          description: 'Your contact phone number',
          placeholder: 'Enter your phone number',
          sortOrder: 2,
          isActive: true,
          isRequired: false,
          isSearchableOnly: false,
        },
      ],
    },
  ];

  for (const sectionData of defaultSections) {
    const { fields, ...sectionInfo } = sectionData;

    // Check if section already exists
    const existingSection = await prisma.profileSection.findUnique({
      where: { slug: sectionInfo.slug },
    });

    if (existingSection) {
      console.log(`   ⚠️  Section "${sectionInfo.name}" already exists`);

      // Still check and create missing fields
      for (const fieldData of fields) {
        const existingField = await prisma.profileField.findFirst({
          where: {
            sectionId: existingSection.id,
            slug: fieldData.slug,
          },
        });

        if (!existingField) {
          await prisma.profileField.create({
            data: {
              ...fieldData,
              sectionId: existingSection.id,
            },
          });
          console.log(`      ✅ Created field: ${fieldData.name}`);
        }
      }
    } else {
      // Create section with fields
      const section = await prisma.profileSection.create({
        data: {
          ...sectionInfo,
          fields: {
            create: fields,
          },
        },
      });
      console.log(`   ✅ Created section: ${sectionInfo.name} with ${fields.length} fields`);
    }
  }

  console.log('');

  // =============================================
  // Seed Admin User
  // =============================================
  console.log('👤 Seeding Admin User...');

  const adminEmail = process.env.ADMIN_EMAIL || 'admin@realestate.com';
  const adminPassword = process.env.ADMIN_PASSWORD || 'Admin@123456';

  // Hash password with Argon2 (more secure than bcrypt)
  const hashedPassword = await argon2.hash(adminPassword);

  // Check if admin already exists
  const existingAdmin = await prisma.user.findUnique({
    where: { email: adminEmail },
  });

  if (existingAdmin) {
    console.log(`   ⚠️  Admin user already exists: ${adminEmail}`);
  } else {
    // Create admin user
    const admin = await prisma.user.create({
      data: {
        email: adminEmail,
        password: hashedPassword,
        role: UserRole.ADMIN,
        status: UserStatus.ACTIVE,
        emailVerified: true,
        emailVerifiedAt: new Date(),
        authProvider: AuthProvider.LOCAL,
      },
    });

    console.log('   ✅ Admin user created successfully!');
    console.log('   ───────────────────────────────');
    console.log(`   📧 Email:    ${adminEmail}`);
    console.log(`   🔑 Password: ${adminPassword}`);
    console.log(`   👤 Role:     ${admin.role}`);
    console.log(`   🆔 ID:       ${admin.id}`);
    console.log('   ───────────────────────────────\n');
  }

  // =============================================
  // Summary
  // =============================================
  const userCount = await prisma.user.count();
  const adminCount = await prisma.user.count({ where: { role: UserRole.ADMIN } });
  const agentTypeCount = await prisma.agentType.count();
  const sectionCount = await prisma.profileSection.count();
  const fieldCount = await prisma.profileField.count();
  const systemSectionCount = await prisma.profileSection.count({ where: { isSystem: true } });

  console.log('📊 Database Summary:');
  console.log(`   Total Users:       ${userCount}`);
  console.log(`   Admins:            ${adminCount}`);
  console.log(`   Agent Types:       ${agentTypeCount}`);
  console.log(`   Profile Sections:  ${sectionCount} (${systemSectionCount} system)`);
  console.log(`   Profile Fields:    ${fieldCount}`);
  console.log('\n🌱 Seeding completed!\n');

  await prisma.$disconnect();
  await pool.end();
}

main()
  .catch((e) => {
    console.error('❌ Seeding failed:', e);
    process.exit(1);
  });