<?php
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";
$username = "wpuser";
$password = "-2b/)ru5/Bi8P[7_";
$dbname = "DemandeConge";

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

$today = new DateTime();
$yearCurrent = (int)$today->format('Y');
$yearNMinus1 = $yearCurrent - 1;

function getTypeId($conn, $nom) {
    $stmt = $conn->prepare("SELECT Id FROM TypeConge WHERE Nom=?");
    $stmt->bind_param("s", $nom);
    $stmt->execute();
    $result = $stmt->get_result();
    $id = null;
    if ($row = $result->fetch_assoc()) {
        $id = (int)$row['Id'];
    }
    $stmt->close();
    error_log("TypeConge '$nom' => Id $id");
    return $id;
}

$cpTypeId = getTypeId($conn, 'Congé payé');
$rttTypeId = getTypeId($conn, 'RTT');

$soldeReportInitial_CP = 0.0;
$soldeReportInitial_RTT = 0.0;

$collaborateursResult = $conn->query("SELECT id FROM CollaborateurAD");
if (!$collaborateursResult) {
    error_log("Erreur récupération collaborateurs : ".$conn->error);
    echo json_encode(['success' => false, 'message' => 'Erreur récupération collaborateurs']);
    exit;
}

while ($collab = $collaborateursResult->fetch_assoc()) {
    $collabId = (int)$collab['id'];

    if ($cpTypeId !== null) {
        $existsStmt = $conn->prepare("SELECT Id FROM CompteurConges WHERE CollaborateurADId=? AND TypeCongeId=? AND Annee=?");
        $existsStmt->bind_param("iii", $collabId, $cpTypeId, $yearNMinus1);
        $existsStmt->execute();
        $existsStmt->store_result();
        if ($existsStmt->num_rows === 0) {
            $insertStmt = $conn->prepare("INSERT INTO CompteurConges (CollaborateurADId, TypeCongeId, Annee, Solde, Total, SoldeReporte) VALUES (?, ?, ?, ?, ?, ?)");
            $insertStmt->bind_param("iiiddd", $collabId, $cpTypeId, $yearNMinus1, $soldeReportInitial_CP, $soldeReportInitial_CP, $soldeReportInitial_CP);
            if (!$insertStmt->execute()) {
                error_log("Erreur insertion CP N-1 collaborateur $collabId : ".$insertStmt->error);
            }
            $insertStmt->close();
        }
        $existsStmt->close();
    }

    if ($rttTypeId !== null) {
        $existsStmt = $conn->prepare("SELECT Id FROM CompteurConges WHERE CollaborateurADId=? AND TypeCongeId=? AND Annee=?");
        $existsStmt->bind_param("iii", $collabId, $rttTypeId, $yearNMinus1);
        $existsStmt->execute();
        $existsStmt->store_result();
        if ($existsStmt->num_rows === 0) {
            $insertStmt = $conn->prepare("INSERT INTO CompteurConges (CollaborateurADId, TypeCongeId, Annee, Solde, Total, SoldeReporte) VALUES (?, ?, ?, ?, ?, ?)");
            $insertStmt->bind_param("iiiddd", $collabId, $rttTypeId, $yearNMinus1, $soldeReportInitial_RTT, $soldeReportInitial_RTT, $soldeReportInitial_RTT);
            if (!$insertStmt->execute()) {
                error_log("Erreur insertion RTT N-1 collaborateur $collabId : ".$insertStmt->error);
            }
            $insertStmt->close();
        }
        $existsStmt->close();
    }
}

$cpStart = new DateTime("$yearCurrent-06-01");
$cpEnd = new DateTime(($yearCurrent + 1) . "-05-31");
$rttStart = new DateTime("$yearCurrent-01-01");
$rttEnd = new DateTime("$yearCurrent-12-31");

$cpAnnualDays = 25;
$rttAnnualDays = 10;

$cpPeriodDays = $cpEnd->diff($cpStart)->days + 1;
$rttPeriodDays = $rttEnd->diff($rttStart)->days + 1;

$cpDailyIncrement = $cpAnnualDays / $cpPeriodDays;
$rttDailyIncrement = $rttAnnualDays / $rttPeriodDays;

error_log("Incrément CP jour : $cpDailyIncrement");
error_log("Incrément RTT jour : $rttDailyIncrement");

if ($today >= $cpStart && $today <= $cpEnd && $cpTypeId !== null) {
    $exerciseYear = (int)$cpStart->format('Y');
    $stmt = $conn->prepare("UPDATE CompteurConges SET Solde = Solde + ? WHERE TypeCongeId = ? AND Annee = ?");
    $stmt->bind_param("dii", $cpDailyIncrement, $cpTypeId, $exerciseYear);
    if (!$stmt->execute()) {
        error_log("Erreur incrément CP N : ".$stmt->error);
    }
    $stmt->close();
}

if ($today >= $rttStart && $today <= $rttEnd && $rttTypeId !== null) {
    $exerciseYear = $yearCurrent;
    $stmt = $conn->prepare("UPDATE CompteurConges SET Solde = Solde + ? WHERE TypeCongeId = ? AND Annee = ?");
    $stmt->bind_param("dii", $rttDailyIncrement, $rttTypeId, $exerciseYear);
    if (!$stmt->execute()) {
        error_log("Erreur incrément RTT N : ".$stmt->error);
    }
    $stmt->close();
}

// Récupérer les compteurs actuels de l'utilisateur demandé en GET
$userId = isset($_GET['user_id']) ? (int)$_GET['user_id'] : 0;
$data = [];

if ($userId > 0) {
    $stmt = $conn->prepare(
        "SELECT tc.Nom, cc.Annee, cc.Solde, cc.Total, cc.SoldeReporte 
         FROM CompteurConges cc 
         JOIN TypeConge tc ON cc.TypeCongeId = tc.Id 
         WHERE cc.CollaborateurADId = ?"
    );
    $stmt->bind_param("i", $userId);
    $stmt->execute();
    $result = $stmt->get_result();

    while ($row = $result->fetch_assoc()) {
        $data[$row['Nom']] = [
            'Annee' => $row['Annee'],
            'Solde' => (float)$row['Solde'],
            'Total' => (float)$row['Total'],
            'SoldeReporte' => (float)$row['SoldeReporte'],
        ];
    }
    $stmt->close();
}

$conn->close();

echo json_encode([
    'success' => true,
    'message' => 'Compteurs mis à jour',
    'counters' => $data,
]);
exit;