<?php
header('Content-Type: application/json');
require_once 'config.php';

try {
    $db = getDB();

    // Check if force parameter is set
    $force = isset($_POST['force']) || isset($_GET['force']);

    // Pontianak administrative data (dummy but more realistic non-rectangular polygons)
    // GeoJSON coordinate order is [longitude, latitude].
    $pontianak_data = [
        [
            'name' => 'Pontianak',
            'area_type' => 'city',
            'population' => 690000,
            'geometry' => '{"type":"Polygon","coordinates":[[[109.320000,-0.005000],[109.330000,-0.004000],[109.340000,-0.005500],[109.345000,-0.008000],[109.348000,-0.012000],[109.350000,-0.016000],[109.348000,-0.020000],[109.340000,-0.023000],[109.330000,-0.024000],[109.320000,-0.023500],[109.310000,-0.022000],[109.305000,-0.019000],[109.303000,-0.016000],[109.302000,-0.012000],[109.305000,-0.008000],[109.310000,-0.006000],[109.318000,-0.004500],[109.325000,-0.003500],[109.329000,-0.004000],[109.320000,-0.005000]]]}'
        ],
        [
            'name' => 'Pontianak Barat',
            'area_type' => 'kecamatan',
            'population' => 112000,
            'geometry' => '{"type":"Polygon","coordinates":[[[109.305000,-0.010000],[109.315000,-0.009500],[109.318000,-0.013000],[109.315000,-0.015000],[109.305000,-0.016000],[109.302000,-0.013000],[109.305000,-0.010000]]]}'
        ],
        [
            'name' => 'Pontianak Utara',
            'area_type' => 'kecamatan',
            'population' => 126000,
            'geometry' => '{"type":"Polygon","coordinates":[[[109.318000,-0.005000],[109.327000,-0.004500],[109.330000,-0.007000],[109.328000,-0.009500],[109.320000,-0.010000],[109.315000,-0.007500],[109.318000,-0.005000]]]}'
        ],
        [
            'name' => 'Pontianak Kota',
            'area_type' => 'kecamatan',
            'population' => 148000,
            'geometry' => '{"type":"Polygon","coordinates":[[[109.320000,-0.010000],[109.327000,-0.009000],[109.330000,-0.011000],[109.328000,-0.015000],[109.320000,-0.015500],[109.315000,-0.013000],[109.320000,-0.010000]]]}'
        ],
        [
            'name' => 'Pontianak Timur',
            'area_type' => 'kecamatan',
            'population' => 94000,
            'geometry' => '{"type":"Polygon","coordinates":[[[109.328000,-0.009500],[109.340000,-0.010000],[109.345000,-0.012500],[109.338000,-0.016000],[109.328000,-0.015000],[109.328000,-0.009500]]]}'
        ],
        [
            'name' => 'Pontianak Selatan',
            'area_type' => 'kecamatan',
            'population' => 132000,
            'geometry' => '{"type":"Polygon","coordinates":[[[109.315000,-0.015000],[109.328000,-0.014500],[109.330000,-0.018000],[109.318000,-0.021000],[109.308000,-0.020000],[109.315000,-0.015000]]]}'
        ],
        [
            'name' => 'Pontianak Tenggara',
            'area_type' => 'kecamatan',
            'population' => 91000,
            'geometry' => '{"type":"Polygon","coordinates":[[[109.328000,-0.015000],[109.338000,-0.016000],[109.340000,-0.019000],[109.330000,-0.021000],[109.320000,-0.020000],[109.328000,-0.015000]]]}'
        ]
    ];

    // Check if data already exists
    $stmt = $db->prepare('SELECT COUNT(*) as count FROM pontianak_areas');
    $stmt->execute();
    $count = $stmt->fetch(PDO::FETCH_ASSOC)['count'];

    if ($count > 0 && !$force) {
        http_response_code(200);
        echo json_encode([
            'success' => true,
            'message' => 'Pontianak data already exists. Use force=true to reseed.'
        ]);
        exit;
    }

    // Delete existing data if force is true
    if ($force && $count > 0) {
        $db->exec('DELETE FROM area_statistics');
        $db->exec('DELETE FROM pontianak_areas');
    }

    // Insert Pontianak areas
    $stmt = $db->prepare('
        INSERT OR IGNORE INTO pontianak_areas (name, area_type, geometry, population)
        VALUES (?, ?, ?, ?)
    ');

    $today = date('Y-m-d');
    $stats_stmt = $db->prepare('
        INSERT OR IGNORE INTO area_statistics (pontianak_area_id, statistic_type, value, data_date)
        VALUES (?, ?, ?, ?)
    ');

    $inserted = 0;
    foreach ($pontianak_data as $data) {
        $stmt->execute([
            $data['name'],
            $data['area_type'],
            $data['geometry'],
            $data['population']
        ]);
        $inserted++;
    }

    // Insert initial area statistics
    $areas_stmt = $db->prepare('SELECT id, population FROM pontianak_areas');
    $areas_stmt->execute();
    $areas = $areas_stmt->fetchAll(PDO::FETCH_ASSOC);

    foreach ($areas as $area) {
        // Insert population density statistic
        $stats_stmt->execute([
            $area['id'],
            'population_density',
            (float)$area['population'],
            $today
        ]);
    }

    http_response_code(200);
    echo json_encode([
        'success' => true,
        'message' => 'Pontianak data seeded successfully',
        'areas_inserted' => $inserted
    ]);

} catch (PDOException $e) {
    http_response_code(500);
    echo json_encode([
        'success' => false,
        'error' => 'Database error: ' . $e->getMessage()
    ]);
} catch (Exception $e) {
    http_response_code(400);
    echo json_encode([
        'success' => false,
        'error' => $e->getMessage()
    ]);
}
?>