#!/usr/bin/env tsx
/**
 * Import churches from JSON export to Neon database
 * Run this LOCALLY (uses DATABASE_URL from .env pointing to Neon)
 */

import { PrismaClient } from '@prisma/client';
import fs from 'fs/promises';
import path from 'path';

interface ChurchExport {
  id: string;
  name: string;
  latitude: number;
  longitude: number;
  country: string;
  massSchedules?: any[];
  confessionSchedules?: any[];
  adorationSchedules?: any[];
  [key: string]: any;
}

async function main() {
  const country = process.argv[2] || 'PL';
  const mode = process.argv[3] || 'dry-run';
  const dryRun = mode === 'dry-run';

  console.log(`📤 Importing ${country} data to Neon...`);
  console.log(`DATABASE_URL: ${process.env.DATABASE_URL?.replace(/:[^:@]+@/, ':****@')}`);

  if (dryRun) {
    console.log('🔍 DRY RUN MODE - No data will be written');
  }

  // Read export file
  const exportFile = path.join(process.cwd(), `export-${country}.json`);

  try {
    const data: ChurchExport[] = JSON.parse(await fs.readFile(exportFile, 'utf-8'));
    console.log(`Loaded ${data.length} churches from export file`);

    // Connect to Neon
    const prisma = new PrismaClient();

    try {
      await prisma.$connect();
      console.log('✅ Connected to Neon database');

      let inserted = 0;
      let updated = 0;
      let skipped = 0;
      let errors = 0;
      let totalMassSchedules = 0;
      let totalConfessionSchedules = 0;
      let totalAdorationSchedules = 0;

      for (const church of data) {
        try {
          const massSchedules = church.massSchedules || [];
          const confessionSchedules = church.confessionSchedules || [];
          const adorationSchedules = church.adorationSchedules || [];

          // Remove relations and ids
          delete church.massSchedules;
          delete church.confessionSchedules;
          delete church.adorationSchedules;
          delete church.id;

          if (!dryRun) {
            // Check if church already exists
            const existing = await prisma.churches.findFirst({
              where: {
                latitude: church.latitude,
                longitude: church.longitude
              }
            });

            if (existing) {
              // Update existing church
              await prisma.churches.update({
                where: { id: existing.id },
                data: church
              });

              // Delete existing schedules
              await prisma.massSchedules.deleteMany({
                where: { churchId: existing.id }
              });
              await prisma.confessionSchedules.deleteMany({
                where: { churchId: existing.id }
              });
              await prisma.adorationSchedules.deleteMany({
                where: { churchId: existing.id }
              });

              // Insert new schedules
              for (const schedule of massSchedules) {
                delete schedule.id;
                await prisma.massSchedules.create({
                  data: {
                    ...schedule,
                    churchId: existing.id
                  }
                });
                totalMassSchedules++;
              }

              for (const schedule of confessionSchedules) {
                delete schedule.id;
                await prisma.confessionSchedules.create({
                  data: {
                    ...schedule,
                    churchId: existing.id
                  }
                });
                totalConfessionSchedules++;
              }

              for (const schedule of adorationSchedules) {
                delete schedule.id;
                await prisma.adorationSchedules.create({
                  data: {
                    ...schedule,
                    churchId: existing.id
                  }
                });
                totalAdorationSchedules++;
              }

              updated++;
            } else {
              // Create new church
              const result = await prisma.churches.create({
                data: church
              });

              // Insert schedules
              for (const schedule of massSchedules) {
                delete schedule.id;
                await prisma.massSchedules.create({
                  data: {
                    ...schedule,
                    churchId: result.id
                  }
                });
                totalMassSchedules++;
              }

              for (const schedule of confessionSchedules) {
                delete schedule.id;
                await prisma.confessionSchedules.create({
                  data: {
                    ...schedule,
                    churchId: result.id
                  }
                });
                totalConfessionSchedules++;
              }

              for (const schedule of adorationSchedules) {
                delete schedule.id;
                await prisma.adorationSchedules.create({
                  data: {
                    ...schedule,
                    churchId: result.id
                  }
                });
                totalAdorationSchedules++;
              }

              inserted++;
            }
          } else {
            // Dry run - just count
            inserted++;
            totalMassSchedules += massSchedules.length;
            totalConfessionSchedules += confessionSchedules.length;
            totalAdorationSchedules += adorationSchedules.length;
          }

          if ((inserted + updated) % 100 === 0) {
            console.log(`Progress: ${inserted + updated} churches processed...`);
          }

        } catch (error) {
          errors++;
          console.error(`Error importing church ${church.name}:`, error instanceof Error ? error.message : error);
        }
      }

      console.log('\n✅ Import complete!');
      console.log(`   - ${inserted} churches inserted`);
      console.log(`   - ${updated} churches updated`);
      console.log(`   - ${skipped} churches skipped`);
      console.log(`   - ${errors} errors`);
      console.log(`   - ${totalMassSchedules} mass schedules`);
      console.log(`   - ${totalConfessionSchedules} confession schedules`);
      console.log(`   - ${totalAdorationSchedules} adoration schedules`);

      await prisma.$disconnect();

      if (dryRun) {
        console.log('\n💡 This was a DRY RUN. To actually import to Neon, run:');
        console.log(`   npx tsx scripts/import-to-neon.ts ${country} real-import`);
      } else {
        console.log('\n🎉 Data successfully uploaded to Neon!');
      }

    } catch (error) {
      console.error('❌ Import failed:', error);
      await prisma.$disconnect();
      throw error;
    }

  } catch (error) {
    if (error instanceof Error && 'code' in error && error.code === 'ENOENT') {
      console.error(`❌ Export file not found: ${exportFile}`);
      console.error(`\nFirst, export data from NAS:`);
      console.error(`   ssh albert@192.168.0.145`);
      console.error(`   cd /volume1/docker/nearestmass`);
      console.error(`   /usr/local/bin/docker compose --profile tools run --rm scraper npx tsx scripts/export-from-nas.ts ${country}`);
      console.error(`\nThen download the export:`);
      console.error(`   scp albert@192.168.0.145:/volume1/docker/nearestmass/export-${country}.json .`);
      console.error(`\nFinally, run this import script again.`);
    } else {
      console.error('❌ Process failed:', error);
    }
    process.exit(1);
  }
}

main().catch(console.error);