<?php

declare(strict_types=1);

require dirname(__DIR__) . '/vendor/autoload.php';

$dotenv = Dotenv\Dotenv::createImmutable(dirname(__DIR__));
$dotenv->safeLoad();

$projectRoot = dirname(__DIR__, 2);
$manifestPath = $projectRoot . '/user-app/src/manifest.json';
$litePosPluginProvider = 'wx7903bb295ac26ac7';
$litePosPluginExport = 'miniprogram_npm/lite-pos-plugin-mate/utils.js';

function replaceMpWeixinPlugin(string $content, string $version, string $provider, string $exportPath): string
{
    if (!preg_match('/"mp-weixin"\s*:\s*\{/', $content, $matches, PREG_OFFSET_CAPTURE)) {
        throw new RuntimeException('未在 manifest.json 中找到 mp-weixin 配置块。');
    }

    $blockStart = $matches[0][1] + strlen($matches[0][0]) - 1;
    $length = strlen($content);
    $depth = 0;
    $inString = false;
    $escaped = false;
    $blockEnd = -1;
    for ($i = $blockStart; $i < $length; $i++) {
        $char = $content[$i];
        if ($inString) {
            if ($escaped) {
                $escaped = false;
                continue;
            }
            if ($char === '\\') {
                $escaped = true;
                continue;
            }
            if ($char === '"') {
                $inString = false;
            }
            continue;
        }
        if ($char === '"') {
            $inString = true;
            continue;
        }
        if ($char === '{') {
            $depth++;
            continue;
        }
        if ($char === '}') {
            $depth--;
            if ($depth === 0) {
                $blockEnd = $i;
                break;
            }
        }
    }

    if ($blockEnd < 0) {
        throw new RuntimeException('manifest.json 中 mp-weixin 配置块不完整。');
    }

    $block = substr($content, $blockStart, $blockEnd - $blockStart + 1);
    $block = preg_replace('/,\s*"plugins"\s*:\s*\{\s*"lite-pos-plugin"\s*:\s*\{.*?\}\s*\}/s', '', $block, 1);
    if (!is_string($block)) {
        throw new RuntimeException('清理 manifest.json 小程序插件配置失败。');
    }

    $pluginBlock = sprintf(
        ",\n        \"plugins\" : {\n            \"lite-pos-plugin\" : {\n                \"version\" : \"%s\",\n                \"provider\" : \"%s\",\n                \"export\" : \"%s\"\n            }\n        }",
        addcslashes($version, "\\\""),
        addcslashes($provider, "\\\""),
        addcslashes($exportPath, "\\\"")
    );
    $updatedBlock = rtrim(substr($block, 0, -1)) . $pluginBlock . "\n    }";

    return substr($content, 0, $blockStart) . $updatedBlock . substr($content, $blockEnd + 1);
}

$dsn = sprintf(
    'mysql:host=%s;port=%s;dbname=%s;charset=%s',
    $_ENV['DB_HOST'] ?? '127.0.0.1',
    $_ENV['DB_PORT'] ?? '3306',
    $_ENV['DB_DATABASE'] ?? '',
    $_ENV['DB_CHARSET'] ?? 'utf8mb4'
);

try {
    $pdo = new PDO(
        $dsn,
        $_ENV['DB_USERNAME'] ?? '',
        $_ENV['DB_PASSWORD'] ?? '',
        [
            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
            PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
        ]
    );

    $configRows = $pdo->query("SELECT config_group, config_key, config_value FROM system_configs")->fetchAll();
    $configMap = [];
    foreach ($configRows as $row) {
        $configMap[$row['config_group'] . '.' . $row['config_key']] = (string)($row['config_value'] ?? '');
    }

    $miniProgramAppId = trim($configMap['mini_program.app_id'] ?? '');
    if ($miniProgramAppId === '') {
        throw new RuntimeException('后台系统配置 mini_program.app_id 为空，无法同步到 user-app manifest。');
    }
    $litePosPluginVersion = trim($configMap['payment.mini_program_plugin_version'] ?? '');
    if ($litePosPluginVersion === '') {
        throw new RuntimeException('后台系统配置 payment.mini_program_plugin_version 为空，无法同步收钱吧小程序插件。');
    }

    $manifestContent = @file_get_contents($manifestPath);
    if ($manifestContent === false) {
        throw new RuntimeException('无法读取 user-app/src/manifest.json。');
    }

    $pattern = '/("mp-weixin"\s*:\s*\{.*?"appid"\s*:\s*")([^"]*)(")/s';
    if (!preg_match($pattern, $manifestContent)) {
        throw new RuntimeException('未在 manifest.json 中找到 mp-weixin.appid 字段。');
    }

    $updatedContent = preg_replace_callback(
        $pattern,
        static fn(array $matches): string => $matches[1] . $miniProgramAppId . $matches[3],
        $manifestContent,
        1
    );

    if (!is_string($updatedContent) || $updatedContent === '') {
        throw new RuntimeException('同步 manifest.json 失败。');
    }
    $updatedContent = replaceMpWeixinPlugin($updatedContent, $litePosPluginVersion, $litePosPluginProvider, $litePosPluginExport);

    if (@file_put_contents($manifestPath, $updatedContent) === false) {
        throw new RuntimeException('写入 user-app/src/manifest.json 失败。');
    }

    echo "SYNC_CLIENT_CONFIG_OK\n";
    echo "mini_program.app_id => {$miniProgramAppId}\n";
    echo "payment.mini_program_plugin_version => {$litePosPluginVersion}\n";
} catch (Throwable $e) {
    fwrite(STDERR, "SYNC_CLIENT_CONFIG_FAIL: {$e->getMessage()}\n");
    exit(1);
}