import { PrismaClient } from '@prisma/client';
import fs from 'fs';
import * as turf from '@turf/turf';

export class GeoJSONSeeder {
  constructor(private prisma: PrismaClient) {}

  async run(): Promise<void> {
    console.log('Seeding GeoJSON data...');

    await this.prisma.$executeRaw`TRUNCATE TABLE "geographics" CASCADE`;

    try {
      // Load GeoJSON file
      const regencyGeoJson = JSON.parse(
        fs.readFileSync('prisma/data/geojson/jember/regency.geojson', 'utf-8')
      );
      const districtGeoJson = JSON.parse(
        fs.readFileSync('prisma/data/geojson/jember/districts.geojson', 'utf-8')
      );

      // 1. Insert Kota/Kabupaten: Jember
      let regency; // Declare regency variable outside the loop

      for (const feature of regencyGeoJson.features) {
        const properties = feature.properties;
        const geometry = feature.geometry;

        // Cleanup code
        const regencyCode = properties.kode_kk.replace(/\./g, '');

        // Insert Regency
        regency = await this.prisma.cities.create({
          data: {
            id: regencyCode,
            name: properties.kab_kota,
          },
        });

        // Insert Geographics for Regency
        const centroid = turf.centroid(feature);
        const [longitude, latitude] = centroid.geometry.coordinates;
        const area = turf.area(feature) / 1_000_000; // dari m² ke km²

        await this.prisma.geographics.create({
          data: {
            city_id: regency.id,
            latitude,
            longitude,
            land_area: area,
            geometry: feature.geometry,
          },
        });

        console.log(`Inserted regency: ${regency.name}`);
      }

      // 2. Loop Semua District di GeoJSON
      for (const feature of districtGeoJson.features) {
        const properties = feature.properties;
        const geometry = feature.geometry;

        // Cleanup code
        const districtCode = properties.kode_kec.replace(/\./g, '');

        // Insert District
        const district = await this.prisma.districts.create({
          data: {
            id: districtCode,
            name: properties.kecamatan,
            city_id: regency!.id,
          },
        });

        console.log(`Inserted district: ${district.name}`);

        // 3. Hitung Centroid dan Area
        const centroid = turf.centroid(feature);
        const [longitude, latitude] = centroid.geometry.coordinates;
        const area = turf.area(feature) / 1_000_000; // dari m² ke km²

        // 4. Insert Geographics
        await this.prisma.geographics.create({
          data: {
            city_id: regency!.id,
            district_id: district.id,
            latitude,
            longitude,
            land_area: area,
            geometry: feature.geometry,
          },
        });

        console.log(`Inserted geographics for district: ${district.name}`);
      }

      console.log(
        'GeoJSON data seeded successfully!',
        districtGeoJson.features.length,
        'districts inserted.'
      );
    } catch (error) {
      console.error('Error seeding GeoJSON data:', error);
    }
  }
}