const Database = require('better-sqlite3');
const { getXNCorePath } = require('./file-utils');

// 版本阶段枚举
const VERSION_STAGES = {
    ALPHA: 'alpha',               // 开发版
    BETA: 'beta',                 // 测试版
    RELEASE_CANDIDATE: 'rc',      // 候选版
    STABLE: 'stable'              // 正式版
};

// 获取所有版本记录
function getAllVersions() {
    try {
        const xnCorePath = getXNCorePath();
        const dbPath = xnCorePath + '/database/XNSim.db';
        const db = new Database(dbPath, { readonly: true });
        
        // 添加stage字段到查询中
        const versions = db.prepare(`
            SELECT verNum, date, time, title, note, author, stage 
            FROM version 
            ORDER BY date DESC, time DESC
        `).all();
        
        db.close();
        return versions;
    } catch (error) {
        console.error('获取版本记录失败:', error);
        throw error;
    }
}

// 添加新版本记录
function addVersion(versionData) {
    try {
        const { verNum, date, time, title, note, author, stage } = versionData;
        
        // 数据验证
        if (!verNum || !date || !time || !title) {
            throw new Error('版本号、日期、时间和标题不能为空');
        }

        // 验证版本阶段
        if (stage && !Object.values(VERSION_STAGES).includes(stage)) {
            throw new Error('无效的版本阶段');
        }
        
        const xnCorePath = getXNCorePath();
        const dbPath = xnCorePath + '/database/XNSim.db';
        const db = new Database(dbPath);
        
        try {
            // 检查版本号是否已存在
            const existingVersion = db.prepare('SELECT verNum FROM version WHERE verNum = ?').get(verNum);
            if (existingVersion) {
                throw new Error('该版本号已存在');
            }
            
            // 插入新版本记录，包含stage字段
            const stmt = db.prepare(`
                INSERT INTO version (
                    verNum, date, time, title, note, author, stage
                ) VALUES (?, ?, ?, ?, ?, ?, ?)
            `);
            const result = stmt.run(
                verNum, 
                date, 
                time, 
                title, 
                note || '', 
                author || '未知用户',
                stage || VERSION_STAGES.ALPHA // 默认为开发版
            );
            
            db.close();
            
            if (result.changes > 0) {
                return {
                    success: true,
                    message: '版本记录添加成功',
                    id: result.lastInsertRowid
                };
            } else {
                throw new Error('添加版本记录失败');
            }
        } catch (dbError) {
            db.close();
            throw dbError;
        }
    } catch (error) {
        console.error('添加版本记录失败:', error);
        throw error;
    }
}

module.exports = {
    getAllVersions,
    addVersion,
    VERSION_STAGES
};