<?php
ob_start();
require_once __DIR__ . '/../../includes/auth.php';
ob_end_clean();

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

if (!isLoggedIn()) { echo json_encode(['success'=>false,'error'=>'Not authenticated']); exit; }

$userId  = (int)$_SESSION['user_id'];
$method  = $_SERVER['REQUEST_METHOD'];

// ══════════════════════════════════════════════════════════
// GET — player's own requests (list, delete, update, lock)
// ══════════════════════════════════════════════════════════
if ($method === 'GET') {
    $action = $_GET['action'] ?? 'list';

    if ($action === 'list') {
        $stmt = db()->prepare("
            SELECT cr.*,
                   COALESCE(p.name, cr.platform_id) AS platform_name
            FROM cashout_requests cr
            LEFT JOIN platforms p ON cr.platform_id = p.slug
            WHERE cr.user_id = ?
            ORDER BY cr.created_at DESC
            LIMIT 50
        ");
        $stmt->execute([$userId]);
        echo json_encode(['success'=>true, 'requests'=>$stmt->fetchAll()]);
        exit;
    }

    if ($action === 'delete') {
        $id  = (int)($_GET['id'] ?? 0);
        $chk = db()->prepare("SELECT id,tokens FROM cashout_requests WHERE id=? AND user_id=? AND status='pending'");
        $chk->execute([$id, $userId]);
        $row = $chk->fetch();
        if (!$row) { echo json_encode(['success'=>false,'error'=>'Request not found or already locked']); exit; }
        db()->prepare("UPDATE users SET tokens=tokens+? WHERE id=?")->execute([$row['tokens'], $userId]);
        db()->prepare("DELETE FROM cashout_requests WHERE id=?")->execute([$id]);
        $nb = db()->prepare("SELECT tokens FROM users WHERE id=?");
        $nb->execute([$userId]);
        echo json_encode(['success'=>true,'new_balance'=>(float)$nb->fetchColumn()]);
        exit;
    }

    if ($action === 'update') {
        $id      = (int)($_GET['id'] ?? 0);
        $tokens  = (float)($_GET['tokens'] ?? 0);
        $alias   = substr(trim($_GET['alias'] ?? ''), 0, 100);
        $chk     = db()->prepare("SELECT id,tokens AS old_tokens FROM cashout_requests WHERE id=? AND user_id=? AND status='pending'");
        $chk->execute([$id, $userId]);
        $row     = $chk->fetch();
        if (!$row)       { echo json_encode(['success'=>false,'error'=>'Request not found or already locked']); exit; }
        if ($tokens < 1) { echo json_encode(['success'=>false,'error'=>'Minimum 1 token']); exit; }
        $diff    = $tokens - $row['old_tokens'];
        if ($diff > 0) {
            $balChk = db()->prepare("SELECT tokens FROM users WHERE id=?");
            $balChk->execute([$userId]);
            if ($diff > (float)$balChk->fetchColumn()) { echo json_encode(['success'=>false,'error'=>'Insufficient balance']); exit; }
        }
        db()->beginTransaction();
        db()->prepare("UPDATE users SET tokens=tokens-? WHERE id=?")->execute([$diff, $userId]);
        db()->prepare("UPDATE cashout_requests SET tokens=?,alias=? WHERE id=?")->execute([$tokens, $alias, $id]);
        db()->commit();
        echo json_encode(['success'=>true]);
        exit;
    }

    if ($action === 'lock') {
        $id  = (int)($_GET['id'] ?? 0);
        $chk = db()->prepare("SELECT id FROM cashout_requests WHERE id=? AND user_id=? AND status='pending'");
        $chk->execute([$id, $userId]);
        if (!$chk->fetch()) { echo json_encode(['success'=>false,'error'=>'Request not found']); exit; }
        try {
            db()->exec("ALTER TABLE cashout_requests MODIFY COLUMN status ENUM('pending','locked','sent','approved','rejected','deleted') DEFAULT 'pending'");
        } catch (Exception $e) {}
        db()->prepare("UPDATE cashout_requests SET status='locked' WHERE id=?")->execute([$id]);
        echo json_encode(['success'=>true]);
        exit;
    }

    echo json_encode(['success'=>false,'error'=>'Unknown action']);
    exit;
}

// ══════════════════════════════════════════════════════════
// POST — submit new cashout request
// ══════════════════════════════════════════════════════════
if ($method !== 'POST') { echo json_encode(['success'=>false,'error'=>'Method not allowed']); exit; }

$data             = json_decode(file_get_contents('php://input'), true);
$platformId       = trim($data['platform_id']        ?? '');
$alias            = trim($data['alias']               ?? '');
$tokens           = (float)($data['tokens']           ?? 0);
$payoutMethodId   = (int)($data['payout_method_id']   ?? 0);
$payoutMethodType = trim($data['payout_method_type']  ?? '');
$payoutHandle     = trim($data['payout_handle']       ?? '');

// Validate platform
$platStmt = db()->prepare("SELECT slug FROM platforms WHERE slug=? AND is_active=1 LIMIT 1");
$platStmt->execute([$platformId]);
if (!$platStmt->fetch()) {
    $platforms = json_decode(PLATFORMS, true);
    if (empty(array_filter($platforms, fn($p) => $p['id'] === $platformId))) {
        echo json_encode(['success'=>false,'error'=>'Invalid platform.']); exit;
    }
}

if (empty($alias)) { echo json_encode(['success'=>false,'error'=>'Platform alias required.']); exit; }
if ($tokens < 1)   { echo json_encode(['success'=>false,'error'=>'Minimum cashout is 1 token.']); exit; }

// Validate payout method
if ($payoutMethodId) {
    $chk = db()->prepare("SELECT method_type,account_handle FROM payout_methods WHERE id=? AND user_id=?");
    $chk->execute([$payoutMethodId, $userId]);
    if ($pm = $chk->fetch()) {
        $payoutMethodType = $pm['method_type'];
        $payoutHandle     = $pm['account_handle'];
    }
}

// Check balance
$balStmt = db()->prepare("SELECT tokens FROM users WHERE id=?");
$balStmt->execute([$userId]);
$balance = (float)$balStmt->fetchColumn();
if ($tokens > $balance) { echo json_encode(['success'=>false,'error'=>'Insufficient token balance.']); exit; }

// Deduct & create
db()->beginTransaction();
try {
    db()->prepare("UPDATE users SET tokens=tokens-? WHERE id=?")->execute([$tokens, $userId]);
    db()->prepare("INSERT INTO cashout_requests (user_id,platform_id,alias,tokens,payout_method_type,payout_handle) VALUES (?,?,?,?,?,?)")
       ->execute([$userId, $platformId, $alias, $tokens, $payoutMethodType, $payoutHandle]);
    db()->commit();
} catch (Exception $e) {
    db()->rollBack();
    echo json_encode(['success'=>false,'error'=>'Request failed. Try again.']); exit;
}

$newBalStmt = db()->prepare("SELECT tokens FROM users WHERE id=?");
$newBalStmt->execute([$userId]);
$nb = (float)$newBalStmt->fetchColumn();

try { logActivity('cashout_request', $userId, null, 'cashout', 0, "Cashout: {$tokens} tokens via {$payoutMethodType}"); } catch(Exception $e){}

echo json_encode(['success'=>true, 'new_balance'=>$nb]);