<?php
/**
 * API Endpoint: Delete Transmission
 * Deletes a transmission from the schedule
 */

require_once __DIR__ . '/../vendor/autoload.php';
require_once __DIR__ . '/../helpers.php';
require_once __DIR__ . '/../TalpaAPI.php';
require_once __DIR__ . '/../auth/auth_functions.php';

use Dotenv\Dotenv;

$dotenv = Dotenv::createImmutable(__DIR__ . '/..');
$dotenv->load();

header('Content-Type: application/json');

// Authentication check
if (!isLoggedIn()) {
    http_response_code(401);
    echo json_encode(['success' => false, 'error' => 'Niet geautoriseerd. Log eerst in.']);
    exit;
}

// Authorization check - admin only
if (!canDelete()) {
    http_response_code(403);
    echo json_encode(['success' => false, 'error' => 'Geen toegang. Alleen admins kunnen uitzendingen verwijderen.']);
    exit;
}

try {
    $db = getDbConnection();
    
    // Get POST data
    $input = json_decode(file_get_contents('php://input'), true);
    
    if (!$input) {
        $input = $_POST;
    }
    
    // Validate required fields
    if (empty($input['id'])) {
        jsonResponse([
            'success' => false,
            'error' => 'Missing transmission ID'
        ], 400);
    }
    
    // Check if transmission exists and get talpa_transmission_id
    $stmt = $db->prepare("SELECT id, talpa_transmission_id FROM transmissions WHERE id = ?");
    $stmt->execute([$input['id']]);
    $transmission = $stmt->fetch(PDO::FETCH_ASSOC);
    
    if (!$transmission) {
        jsonResponse([
            'success' => false,
            'error' => 'Transmission not found'
        ], 404);
    }
    
    // Delete from Talpa API if talpa_transmission_id exists
    if (!empty($transmission['talpa_transmission_id'])) {
        try {
            $talpaApi = new TalpaApi();
            $talpaResponse = $talpaApi->deleteTransmission($transmission['talpa_transmission_id']);
            
            // Log the Talpa API response
            error_log("Talpa API delete response: " . json_encode($talpaResponse));
        } catch (Exception $e) {
            // Log error but continue with local deletion
            error_log("Failed to delete transmission from Talpa API: " . $e->getMessage());
        }
    }
    
    // Delete transmission from local database
    $stmt = $db->prepare("DELETE FROM transmissions WHERE id = ?");
    $stmt->execute([$input['id']]);
    
    jsonResponse([
        'success' => true,
        'message' => 'Transmission deleted successfully'
    ]);
    
} catch (Exception $e) {
    jsonResponse([
        'success' => false,
        'error' => $e->getMessage()
    ], 500);
}