<?php
/**
 * AJAX API voor Integraties (Outlook, Teams, Jira)
 */

require_once __DIR__ . '/../includes/auth.php';
require_once __DIR__ . '/../includes/integrations/microsoft.php';
require_once __DIR__ . '/../includes/integrations/jira.php';

$user = require_auth();
$db = get_db_connection();

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

$action = $_GET['action'] ?? ($_POST['action'] ?? '');

try {
    // 1. Jira Verbinding Testen & Optioneel Opslaan
    if ($action === 'test_jira') {
        $input = json_decode(file_get_contents('php://input'), true) ?: $_POST;
        $domain = trim($input['jira_domain'] ?? '');
        $email = trim($input['jira_email'] ?? '');
        $apiToken = trim($input['jira_api_token'] ?? '');
        $save = !empty($input['save']);

        // Als er geen nieuw token is meegegeven, kijk of er een opgeslagen token is
        if (empty($apiToken)) {
            $stmt = $db->prepare("SELECT settings FROM integrations WHERE user_id = ? AND provider = 'JIRA'");
            $stmt->execute([$user['id']]);
            $saved = json_decode($stmt->fetchColumn() ?: '{}', true);
            $apiToken = $saved['jira_api_token'] ?? '';
            if (empty($domain)) $domain = $saved['jira_domain'] ?? '';
            if (empty($email)) $email = $saved['jira_email'] ?? '';
        }

        $res = jira_test_connection($domain, $email, $apiToken);

        if ($res['success'] && $save) {
            $jiraUser = $res['user'];
            $settings = json_encode([
                'jira_domain'    => jira_normalize_domain($domain),
                'jira_email'     => $email,
                'jira_api_token' => $apiToken,
                'account_name'   => $jiraUser['displayName'] ?? '',
                'account_id'     => $jiraUser['accountId'] ?? '',
            ]);

            $stmt = $db->prepare("
                INSERT INTO integrations (user_id, provider, is_enabled, is_demo_mode, settings, last_sync_at)
                VALUES (?, 'JIRA', 1, 0, ?, NOW())
                ON DUPLICATE KEY UPDATE
                    is_enabled = 1,
                    is_demo_mode = 0,
                    settings = VALUES(settings),
                    last_sync_at = NOW()
            ");
            $stmt->execute([$user['id'], $settings]);

            // Wis eventuele oude sessie cache
            unset($_SESSION["jira_issues_user_{$user['id']}"]);
        }

        echo json_encode($res);
        exit;
    }

    // 2. Jira Issues Ophalen (Toegewezen aan de gebruiker)
    if ($action === 'get_jira_issues') {
        $force = !empty($_GET['force']) || !empty($_POST['force']);
        $res = jira_get_user_issues($user['id'], $force);
        echo json_encode($res);
        exit;
    }

    // 3. Outlook Agenda Afspraken Ophalen
    if ($action === 'get_outlook_events') {
        $date = $_GET['date'] ?? date('Y-m-d');
        $events = microsoft_fetch_today_events($user['id'], $date);
        echo json_encode([
            'success' => true,
            'date'    => $date,
            'events'  => $events,
            'count'   => count($events),
        ]);
        exit;
    }

    // 4. Integratie Ontkoppelen
    if ($action === 'disconnect') {
        $input = json_decode(file_get_contents('php://input'), true) ?: $_POST;
        $provider = strtoupper(trim($input['provider'] ?? ''));

        if ($provider === 'OUTLOOK') {
            microsoft_disconnect($user['id']);
            echo json_encode(['success' => true, 'message' => 'Microsoft Outlook ontkoppeld']);
            exit;
        }

        if ($provider === 'JIRA') {
            jira_disconnect($user['id']);
            echo json_encode(['success' => true, 'message' => 'Atlassian Jira ontkoppeld']);
            exit;
        }

        echo json_encode(['error' => 'Onbekende provider']);
        exit;
    }

    echo json_encode(['error' => 'Onbekende actie']);
} catch (Exception $e) {
    http_response_code(500);
    echo json_encode(['error' => $e->getMessage()]);
}