<?php
require_once __DIR__ . '/../db/config.php';

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

$action = $_POST['action'] ?? '';

if ($action === 'upload_image') {
    if (isset($_FILES['image']) && $_FILES['image']['error'] === UPLOAD_ERR_OK) {
        // Check if locked
        $stmt = db()->prepare("SELECT setting_value FROM settings WHERE setting_key = 'is_locked'");
        $stmt->execute();
        $isLocked = $stmt->fetchColumn();
        
        if ($isLocked === '1') {
            echo json_encode(['success' => false, 'error' => 'Settings are locked.']);
            exit;
        }

        $uploadDir = __DIR__ . '/../assets/images/uploads/';
        $fileName = 'valentine_' . time() . '_' . basename($_FILES['image']['name']);
        $targetPath = $uploadDir . $fileName;

        if (move_uploaded_file($_FILES['image']['tmp_name'], $targetPath)) {
            $webPath = 'assets/images/uploads/' . $fileName;
            
            $stmt = db()->prepare("UPDATE settings SET setting_value = ? WHERE setting_key = 'valentine_image'");
            $stmt->execute([$webPath]);
            
            echo json_encode(['success' => true, 'path' => $webPath]);
        } else {
            echo json_encode(['success' => false, 'error' => 'Failed to move uploaded file.']);
        }
    } else {
        echo json_encode(['success' => false, 'error' => 'No file uploaded or upload error.']);
    }
} elseif ($action === 'toggle_lock') {
    $lockValue = $_POST['lock'] === 'true' ? '1' : '0';
    $stmt = db()->prepare("UPDATE settings SET setting_value = ? WHERE setting_key = 'is_locked'");
    $stmt->execute([$lockValue]);
    echo json_encode(['success' => true, 'locked' => $lockValue === '1']);
} elseif ($action === 'reset') {
    // We don't necessarily reset the image here unless specified, 
    // but the user said "reset the experience". 
    // Maybe it just clears the locked state and image? 
    // Usually "reset experience" for the user means restart the proposal.
    // However, if they want to reset the setup, we can clear the image.
    $stmt = db()->prepare("UPDATE settings SET setting_value = '' WHERE setting_key = 'valentine_image'");
    $stmt->execute();
    $stmt = db()->prepare("UPDATE settings SET setting_value = '0' WHERE setting_key = 'is_locked'");
    $stmt->execute();
    echo json_encode(['success' => true]);
} else {
    echo json_encode(['success' => false, 'error' => 'Invalid action.']);
}