/*
    提取文件路径://home/fy/work/xiaoding/owl-admin/app/Models
    下所有的文件中
    protected $table = '要提取的表名';
    所有的表名，然后去数据库中查询是否存在这些表，如果不存在，就打印出来
 */

const fs = require('fs');
const path = require('path');
const db = require('../util/db');

// 模型文件目录路径
const MODELS_DIR = '/home/fy/work/xiaoding/owl-admin/app/Models';

// 从PHP文件中提取表名
function extractTableName(fileContent) {
    const tableMatch = fileContent.match(/protected\s+\$table\s*=\s*['"]([^'"]+)['"]/);
    return tableMatch ? tableMatch[1] : null;
}

// 递归获取所有PHP文件
async function getAllPhpFiles(dir) {
    const files = [];
    const entries = fs.readdirSync(dir, { withFileTypes: true });

    for (const entry of entries) {
        const fullPath = path.join(dir, entry.name);
        if (entry.isDirectory()) {
            files.push(...await getAllPhpFiles(fullPath));
        } else if (entry.isFile() && entry.name.endsWith('.php')) {
            files.push(fullPath);
        }
    }

    return files;
}

// 检查表是否存在于数据库中
async function checkTableExists(tableName) {
    try {
        const [rows] = await db.query(`
            SELECT COUNT(*) as count 
            FROM information_schema.tables 
            WHERE table_schema = 'xiaoding_test' 
            AND table_name = ?
        `, [tableName]);
        return rows[0].count > 0;
    } catch (error) {
        console.error(`检查表 ${tableName} 时出错:`, error);
        return false;
    }
}

// 检查数据库中存在但没有对应模型的表
async function checkMissingModels() {
    try {
        const [rows] = await db.query(`
            SELECT table_name AS table_name
            FROM information_schema.tables
            WHERE
                table_schema = 'xiaoding_test'
                AND table_name NOT LIKE 'admin_%'
                AND table_name NOT LIKE 'manage_%'
                AND table_name NOT IN(
                    'cache',
                    'cache_locks',
                    'failed_jobs',
                    'job_batches',
                    'jobs',
                    'migrations',
                    'password_reset_tokens',
                    'personal_access_tokens'
                )  `);

        const existingTables = rows.map(row => row.table_name);
        const phpFiles = await getAllPhpFiles(MODELS_DIR);
        const modelNames = phpFiles.map(file => {
            const content = fs.readFileSync(file, 'utf8');
            return extractTableName(content);
        }).filter(name => name !== null);
        const modelNamesWithUnderscore = phpFiles.map(file => path.basename(file, '.php').toLowerCase());
    
        const missingModels = existingTables.filter(table => {
            if (table === undefined) {
                return false; // Skip undefined table names
            }
            const tableWithoutPrefix = table.replace(/^admin_/, '');
            return !modelNames.includes(tableWithoutPrefix) && !modelNamesWithUnderscore.includes(tableWithoutPrefix);
        });

        if (missingModels.length > 0) {
            console.log('\n以下表在数据库中存在，但没有对应的模型:');
            missingModels.forEach(table => {
                console.log(`缺失模型的表名: ${table}`);
            });
        } else {
            console.log('\n所有存在的表都有对应的模型');
        }
    } catch (error) {
        console.error('检查缺失模型时出错:', error);
    }
}

// 主函数
async function main() {
    try {
        // 获取所有PHP文件
        const phpFiles = await getAllPhpFiles(MODELS_DIR);
        console.log(`找到 ${phpFiles.length} 个PHP文件`);

        // 存储不存在的表
        const missingTables = [];

        // 遍历所有文件
        for (const file of phpFiles) {
            const content = fs.readFileSync(file, 'utf8');
            const tableName = extractTableName(content);

            if (tableName) {
                const exists = await checkTableExists(tableName);
                if (!exists) {
                    missingTables.push({
                        model: path.relative(MODELS_DIR, file),
                        table: tableName
                    });
                }
            }
        }

        // 打印结果
        if (missingTables.length > 0) {
            console.log('\n以下表在数据库中不存在:');
            missingTables.forEach(({ model, table }) => {
                console.log(`模型文件: ${model}`);
                console.log(`缺失表名: ${table}`);
                console.log('---');
            });
        } else {
            console.log('\n所有表都存在于数据库中');
        }

        // 检查数据库中存在但没有对应模型的表
        await checkMissingModels();

    } catch (error) {
        console.error('执行过程中出错:', error);
    } finally {
        // 关闭数据库连接
        await db.end();
    }
}

// 执行主函数
main().catch(err => {
    console.error('主函数执行出错:', err);
    process.exit(1);
});