<?php
// Récupération des demandes de congés avec gestion des exercices
header("Access-Control-Allow-Origin: *");
header("Access-Control-Allow-Methods: GET, OPTIONS");
header("Access-Control-Allow-Headers: Content-Type");

if ($_SERVER['REQUEST_METHOD'] == 'OPTIONS') {
    http_response_code(200);
    exit();
}

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

ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

$host = "192.168.0.4";
$dbname = "DemandeConge";
$username = "wpuser";
$password = "-2b/)ru5/Bi8P[7_";

$conn = new mysqli($host, $username, $password, $dbname);

if ($conn->connect_error) {
    error_log("Erreur connexion DB getRequests: " . $conn->connect_error);
    echo json_encode(["success" => false, "message" => "Erreur de connexion à la base de données : " . $conn->connect_error]);
    exit();
}

$userId = $_GET['user_id'] ?? null;

error_log("=== DEBUT getRequests.php ===");
error_log("getRequests - user_id reçu: " . ($userId ?? 'NULL'));
error_log("getRequests - Toutes les variables GET: " . print_r($_GET, true));

if ($userId === null) {
    error_log("getRequests - user_id manquant");
    echo json_encode(["success" => false, "message" => "ID utilisateur manquant."]);
    exit();
}

$checkUserQuery = "SELECT ID, Nom, Prenom FROM Users WHERE ID = ?";
$checkUserStmt = $conn->prepare($checkUserQuery);
if ($checkUserStmt) {
    $checkUserStmt->bind_param("i", $userId);
    $checkUserStmt->execute();
    $userResult = $checkUserStmt->get_result();
    if ($userRow = $userResult->fetch_assoc()) {
        error_log("getRequests - Utilisateur trouvé: " . $userRow['Prenom'] . " " . $userRow['Nom']);
    } else {
        error_log("getRequests - ATTENTION: Utilisateur ID $userId non trouvé dans la table Users");
    }
    $checkUserStmt->close();
}

function getWorkingDays($startDate, $endDate) {
    $workingDays = 0;
    $current = new DateTime($startDate);
    $end = new DateTime($endDate);
    while ($current <= $end) {
        $dayOfWeek = (int)$current->format('N');
        if ($dayOfWeek < 6) {
            $workingDays++;
        }
        $current->modify('+1 day');
    }
    return $workingDays;
}

try {
    $query = "
        SELECT 
            dc.Id,
            dc.DateDebut,
            dc.DateFin,
            dc.Statut,
            dc.DateDemande,
            dc.Commentaire,
            dc.Validateur,
            dc.DocumentJoint,       -- 👈 CHAMP AJOUTÉ ICI
            tc.Nom as TypeConge
        FROM DemandeConge dc
        JOIN TypeConge tc ON dc.TypeCongeId = tc.Id
        WHERE dc.EmployeeId = ?
        ORDER BY dc.DateDemande DESC
    ";

    $stmt = $conn->prepare($query);
    if ($stmt === false) {
        throw new Exception("Erreur de préparation de la requête : " . $conn->error);
    }

    $stmt->bind_param("i", $userId);
    $stmt->execute();
    $result = $stmt->get_result();

    $requests = [];

    while ($row = $result->fetch_assoc()) {
        $workingDays = getWorkingDays($row['DateDebut'], $row['DateFin']);

        $displayType = $row['TypeConge'];
        switch ($row['TypeConge']) {
            case 'Congé payé':
                $displayType = 'Congés payés';
                break;
            case 'RTT':
                $displayType = 'RTT';
                break;
            case 'Congé maladie':
                $displayType = 'Congé maladie';
                break;
        }

        $startDate = new DateTime($row['DateDebut']);
        $endDate = new DateTime($row['DateFin']);
        $submittedDate = new DateTime($row['DateDemande']);

        if ($row['DateDebut'] === $row['DateFin']) {
            $dateDisplay = $startDate->format('d/m/Y');
        } else {
            $dateDisplay = $startDate->format('d/m/Y') . ' - ' . $endDate->format('d/m/Y');
        }

        // 👇 GÉNÉRATION DU LIEN VERS LE FICHIER
        $fileUrl = null;
        if ($row['TypeConge'] === 'Congé maladie' && !empty($row['DocumentJoint'])) {
            $fileName = basename($row['DocumentJoint']);
            $fileUrl = 'http://localhost/GTA/project/uploads/'. $fileName;
        }

        $requests[] = [
            'id' => (int)$row['Id'],
            'type' => $displayType,
            'startDate' => $row['DateDebut'],
            'endDate' => $row['DateFin'],
            'dateDisplay' => $dateDisplay,
            'days' => $workingDays,
            'status' => $row['Statut'],
            'reason' => $row['Commentaire'] ?: 'Aucun commentaire',
            'submittedAt' => $row['DateDemande'],
            'submittedDisplay' => $submittedDate->format('d/m/Y'),
            'validator' => $row['Validateur'] ?: null,
            'fileUrl' => $fileUrl 
        ];
    }

    $stmt->close();

    echo json_encode([
        "success" => true,
        "message" => "Demandes récupérées avec succès.",
        "requests" => $requests,
        "total" => count($requests)
    ]);

} catch (Exception $e) {
    error_log("Erreur récupération demandes : " . $e->getMessage());
    echo json_encode([
        "success" => false,
        "message" => "Erreur lors de la récupération des demandes : " . $e->getMessage()
    ]);
}

$conn->close();
?>