<?php
/**
 * API Endpoint: Get Block Time
 * Returns the start time for a specific daily block
 */

require_once __DIR__ . '/../vendor/autoload.php';
require_once __DIR__ . '/../helpers.php';

use Dotenv\Dotenv;

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

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

try {
    $db = getDbConnection();
    
    $date = $_GET['date'] ?? null;
    $channel = $_GET['channel'] ?? null;
    
    if (!$date || !$channel) {
        jsonResponse([
            'error' => 'Missing date or channel parameter'
        ], 400);
    }
    
    // Get daily block
    $stmt = $db->prepare("
        SELECT actual_start_time as start_time, actual_end_time as end_time
        FROM daily_blocks 
        WHERE block_date = ? AND channel = ?
        LIMIT 1
    ");
    $stmt->execute([$date, $channel]);
    $block = $stmt->fetch();
    
    if ($block) {
        jsonResponse($block);
    } else {
        // Return default from template
        $dayOfWeek = ['zo', 'ma', 'di', 'wo', 'do', 'vr', 'za'][date('w', strtotime($date))];
        
        $stmt = $db->prepare("
            SELECT default_start_time as start_time, default_end_time as end_time
            FROM block_templates 
            WHERE channel = ? 
            AND (day_of_week = ? OR day_of_week = 'all')
            AND is_active = 1
            LIMIT 1
        ");
        $stmt->execute([$channel, $dayOfWeek]);
        $template = $stmt->fetch();
        
        jsonResponse($template ?: ['start_time' => '07:00:00', 'end_time' => null]);
    }
    
} catch (Exception $e) {
    jsonResponse([
        'error' => $e->getMessage()
    ], 500);
}