<?php
// =========================================================
// backend/bot/generate_price_tasks.php
// Cron Job: Runs every 15 minutes
// Generates random Short & Long trips in Damascus
// =========================================================

// CLI or Web execution
require_once __DIR__ . '/../core/bootstrap.php';
require_once __DIR__ . '/../functions.php';

try {
    $con = Database::get('main');
} catch (Exception $e) {
    die("Database connection failed\n");
}

// 1. Ensure Table Exists
$sql = "
CREATE TABLE IF NOT EXISTS `scraped_competitor_prices` (
  `id` BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
  `task_id` varchar(100) DEFAULT NULL,
  `app_name` varchar(100) NOT NULL,
  `competitor_name` varchar(100) NOT NULL,
  `start_location` varchar(255) NOT NULL,
  `end_location` varchar(255) NOT NULL,
  `start_lat` decimal(10,7) DEFAULT NULL,
  `start_lng` decimal(10,7) DEFAULT NULL,
  `end_lat` decimal(10,7) DEFAULT NULL,
  `end_lng` decimal(10,7) DEFAULT NULL,
  `price_amount` decimal(8,2) NOT NULL,
  `price_per_km` decimal(8,2) NOT NULL,
  `distance_km` decimal(8,2) DEFAULT NULL,
  `duration_min` int DEFAULT NULL,
  `currency` varchar(10) NOT NULL DEFAULT 'JOD',
  `country_code` varchar(10) NOT NULL DEFAULT 'JO',
  `scraped_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
  `created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
  KEY `idx_app_name` (`app_name`),
  KEY `idx_competitor_name` (`competitor_name`),
  KEY `idx_start_location` (`start_location`),
  KEY `idx_country_code` (`country_code`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
";
$con->exec($sql);

// [AI Formula Discovery] Create table for reverse-engineered formulas
$sqlFormula = "
CREATE TABLE IF NOT EXISTS `competitor_secret_formulas` (
  `id` INT AUTO_INCREMENT PRIMARY KEY,
  `competitor_name` varchar(100) NOT NULL,
  `country_code` varchar(10) NOT NULL,
  `base_fare` decimal(8,3) NOT NULL,
  `price_per_km` decimal(8,3) NOT NULL,
  `price_per_min` decimal(8,3) NOT NULL,
  `confidence_score` decimal(5,2) DEFAULT 0,
  `sample_size` int DEFAULT 0,
  `last_updated` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  UNIQUE KEY `idx_comp_country` (`competitor_name`, `country_code`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
";
$con->exec($sqlFormula);

// Auto-patch existing table if upgrading
try {
    $con->exec("ALTER TABLE `scraped_competitor_prices` ADD COLUMN `distance_km` decimal(8,2) DEFAULT NULL AFTER `price_per_km`");
    $con->exec("ALTER TABLE `scraped_competitor_prices` ADD COLUMN `duration_min` int DEFAULT NULL AFTER `distance_km`");
} catch (Exception $e) {
    // Columns might already exist, ignore error
}


// 2. Ten Key Regions in Damascus (Syria) and Amman (Jordan)
$countriesConfig = [
    'SY' => [
        'competitors' => ['yallago', 'zaken', 'tufaddal'],
        'regions' => [
            ['name' => 'Umayyad Square', 'lat' => 33.5138, 'lng' => 36.2765],
            ['name' => 'Mezzeh',         'lat' => 33.5074, 'lng' => 36.2530],
            ['name' => 'Malki',          'lat' => 33.5220, 'lng' => 36.2840],
            ['name' => 'Kafersouseh',    'lat' => 33.4981, 'lng' => 36.2730],
            ['name' => 'Al-Midan',       'lat' => 33.4947, 'lng' => 36.2995],
            ['name' => 'Bab Tuma',       'lat' => 33.5126, 'lng' => 36.3150],
            ['name' => 'Rukneddine',     'lat' => 33.5350, 'lng' => 36.2950],
            ['name' => 'Dummar',         'lat' => 33.5385, 'lng' => 36.2250],
            ['name' => 'Baramkeh',       'lat' => 33.5100, 'lng' => 36.2885],
            ['name' => 'Muhajireen',     'lat' => 33.5320, 'lng' => 36.2720],
        ]
    ],
    'JO' => [
        'competitors' => ['com.careem.acma', 'com.ubercab', 'com.taxif.passenger', 'me.com.easytaxi'],
        'regions' => [
            ['name' => 'Abdoun',           'lat' => 31.9392, 'lng' => 35.8942],
            ['name' => 'Jabal Amman',      'lat' => 31.9511, 'lng' => 35.9189],
            ['name' => 'Sweileh',          'lat' => 32.0167, 'lng' => 35.8333],
            ['name' => 'Khalda',           'lat' => 31.9861, 'lng' => 35.8450],
            ['name' => 'Al-Jubaiha',        'lat' => 32.0194, 'lng' => 35.8753],
            ['name' => 'Tla Al-Ali',       'lat' => 31.9961, 'lng' => 35.8647],
            ['name' => 'Shmeisani',        'lat' => 31.9680, 'lng' => 35.9020],
            ['name' => 'Um Uthaina',       'lat' => 31.9610, 'lng' => 35.8770],
            ['name' => 'Jabal Al-Weibdeh', 'lat' => 31.9560, 'lng' => 35.9220],
            ['name' => 'Marj Al-Hamam',    'lat' => 31.9000, 'lng' => 35.8500],
        ]
    ]
];

// Helper to generate a random point within a radius (in km)
function generateRandomPoint($lat, $lng, $radius) {
    $radiusInDegrees = $radius / 111.0; // 1 degree is ~111km
    $u = lcg_value();
    $v = lcg_value();
    $w = $radiusInDegrees * sqrt($u);
    $t = 2 * pi() * $v;
    $x = $w * cos($t);
    $y = $w * sin($t);

    // Adjust longitude based on latitude
    $new_lng = $x / cos(deg2rad($lat));
    $new_lat = $y;

    return [
        'lat' => $lat + $new_lat,
        'lng' => $lng + $new_lng
    ];
}

$tasksCreated = 0;

foreach ($countriesConfig as $countryCode => $config) {
    $competitors = $config['competitors'];
    $regions = $config['regions'];

    foreach ($regions as $region) {
        // A. Generate Start Point (within 2km of region center)
        $start = generateRandomPoint($region['lat'], $region['lng'], 2);

        // B. Generate Short Trip (2-5 km from start)
        $shortDist = rand(20, 50) / 10.0;
        $shortEnd = generateRandomPoint($start['lat'], $start['lng'], $shortDist);

        // C. Generate Long Trip (10-15 km from start)
        $longDist = rand(100, 150) / 10.0;
        $longEnd = generateRandomPoint($start['lat'], $start['lng'], $longDist);

        $trips = [$shortEnd, $longEnd];

        foreach ($trips as $end) {
            foreach ($competitors as $app) {
                $taskId = "prc_" . uniqid();
                
                $taskData = [
                    "task_id" => $taskId,
                    "type" => "price_check",
                    "app" => $app,
                    "payload" => [
                        "start_lat" => $start['lat'],
                        "start_lng" => $start['lng'],
                        "end_lat" => $end['lat'],
                        "end_lng" => $end['lng']
                    ]
                ];

                // Push to Redis Queue
                $redis->lpush('queue:bot:tasks', json_encode($taskData));
                $tasksCreated++;
            }
        }
    }
}

echo "Successfully generated and queued $tasksCreated pricing tasks.\n";