import { Context, Hono } from 'hono'
import * as dotenv from 'dotenv'
import { cors } from "hono/cors";
import { compress } from "hono/compress";
import { prettyJSON } from "hono/pretty-json";
import { trimTrailingSlash } from "hono/trailing-slash";
import { serve } from '@hono/node-server'
import { createStorage } from "unstorage";
import cloudflareKVHTTPDriver from "unstorage/drivers/cloudflare-kv-http";
import { serveStatic } from '@hono/node-server/serve-static'

import path from 'path'
import { fileURLToPath } from 'url'
import { dirname } from 'path'
import { getTenantAccessToken, sendFeishuMessageText } from './functions/utils/feishu.js'
import { get_access_token, getEmails } from './functions/utils/mail.js'

// 导入所有路由处理函数
import { onRequest as handleAccount } from './functions/api/account.js'
import { onRequest as handleLogin } from './functions/api/login.js'
import { onRequest as handleSetting } from './functions/api/setting.js'
import { onRequest as handleMailAuth } from './functions/api/mail/auth.js'
import { onRequest as handleMailCallback } from './functions/api/mail/callback.js'
import { onRequest as handleMailAll } from './functions/api/mail/all.js'
import { onRequest as handleMailNew } from './functions/api/mail/new.js'
import { onRequest as handleMailSend } from './functions/api/mail/send.js'
import { onRequest as handleBatch } from './functions/api/mail/batch.js'
import { onRequest as handleMailStatus } from './functions/api/mail/status.js'
dotenv.config({ path: ['.env', '.env.local'], override: true });
const isDev = process.env.NODE_ENV === 'development'

const app = new Hono<{ Bindings: Env }>()
app.use(compress());
app.use(prettyJSON());
app.use(trimTrailingSlash());
app.use('*', cors({
    origin: '*',
    allowMethods: ['GET', 'POST', 'PUT', 'DELETE', 'OPTIONS'],
    allowHeaders: ['Content-Type', 'Authorization'],
    exposeHeaders: ['Content-Length'],
    credentials: true,
}));


const storage = createStorage({
    driver: cloudflareKVHTTPDriver({
        accountId: process.env.CLOUDFLARE_ACCOUNT_ID || "",
        namespaceId: process.env.CLOUDFLARE_NAMESPACE_ID || "",
        apiToken: process.env.CLOUDFLARE_API_TOKEN || "",
    }),
});

const kv: KVNamespace = {
    get: async (key: string) => {
        const value = await storage.getItemRaw(key);
        return value as string;
    },
    put: async (key: string, value: string) => {
        await storage.setItem(key, value);
    },
    delete: async (key: string) => {
        await storage.removeItem(key);
    }
};

app.use('*', async (c, next) => {
    c.env.KV = kv;
    await next()
})


const scriptPath = fileURLToPath(import.meta.url)
const scriptDir = dirname(scriptPath)
const rootDir = isDev ? dirname(scriptPath) : dirname(scriptDir)
const currentDir = process.cwd();
let staticPath = path.relative(currentDir, rootDir);
if (!isDev) {
    staticPath = path.relative(currentDir, path.join(rootDir, "dist"))
}
console.log('Script dir:', scriptDir)
console.log('Root dir:', rootDir)
console.log('Current dir:', currentDir);
console.log('Relative path for static files:', staticPath || '.');



const createContext = (c: Context) => {
    const eventContext: RouteContext = {
        request: c.req.raw,
        functionPath: c.req.path,
        waitUntil: (promise: Promise<any>) => {
            if (c.executionCtx?.waitUntil) {
                c.executionCtx.waitUntil(promise);
            }
        },
        passThroughOnException: () => {
            if (c.executionCtx?.passThroughOnException) {
                c.executionCtx.passThroughOnException();
            }
        },
        next: async (input?: Request | string, init?: RequestInit) => {
            if (typeof input === 'string') {
                return fetch(input, init);
            } else if (input instanceof Request) {
                return fetch(input);
            }
            return new Response('Not Found', { status: 404 });
        },
        env: {
            ...c.env,
            ASSETS: {
                fetch: fetch.bind(globalThis)
            }
        },
        params: c.req.param(),
        // 可以从 c.get() 获取数据，或者传入空对象
        data: c.get('data') || {}
    };
    return eventContext;
}

app.all('/api/*', async (c) => {
    try {
        const context = createContext(c);
        const path = c.req.path;
        // 根据路径匹配对应的处理函数
        let response: Response;
        switch (path) {
            case '/api/account':
                response = await handleAccount(context);
                break;
            case '/api/login':
                response = await handleLogin(context);
                break;
            case '/api/setting':
                response = await handleSetting(context);
                break;
            case '/api/mail/auth':
                response = await handleMailAuth(context);
                break;
            case '/api/mail/callback':
                response = await handleMailCallback(context);
                break;
            case '/api/mail/all':
                response = await handleMailAll(context);
                break;
            case '/api/mail/new':
                response = await handleMailNew(context);
                break;
            case '/api/mail/send':
                response = await handleMailSend(context);
                break;
            case '/api/mail/status':
                response = await handleMailStatus(context);
                break;
            case '/api/mail/batch':
                response = await handleBatch(context);
                break;
            default:
                return c.json({ error: 'Route not found' }, 404);
        }
        return response;
    } catch (error) {
        return c.json({ error: (error as Error).message }, 500);
    }
})


// 中间件配置
app.get('/*', serveStatic({
    root: staticPath,
    rewriteRequestPath: (path) => {
        return path === '/' ? '/index.html' : path;
    },
    onFound: async (path, c) => {
        console.log('Found:', path)
    },
    onNotFound: async (path, c) => {
        console.log('Not Found:', path)
    }
}))


// 邮箱监控功能
async function checkEmailsForNewMessages(env: Env) {
    try {
        // 获取设置
        const KV_KEY = "settings";
        const settingsStr = await env.KV.get(KV_KEY);
        if (!settingsStr) {
            console.log('未找到设置信息');
            return;
        }

        const settings = JSON.parse(settingsStr);
        if (!settings.emailMonitor || !Array.isArray(settings.emailMonitor) || settings.emailMonitor.length === 0) {
            console.log('未配置监控邮箱');
            return;
        }

        // 获取飞书访问令牌
        const feishuConfig = settings.feishu;
        if (!feishuConfig || !feishuConfig.app_id || !feishuConfig.app_secret || !feishuConfig.receive_id) {
            console.log('飞书配置不完整');
            return;
        }

        const tokenResponse = await getTenantAccessToken(feishuConfig.app_id, feishuConfig.app_secret);
        if (tokenResponse.code !== 0) {
            console.log('获取飞书访问令牌失败:', tokenResponse.msg);
            return;
        }

        const feishuToken = tokenResponse.tenant_access_token;
        const now = new Date();
        const currentTime = now.toISOString();

        // 遍历所有监控邮箱
        for (const monitor of settings.emailMonitor) {
            if (!monitor.email) continue;

            // 检查是否到了检查间隔
            let shouldCheck = false;
            if (monitor.lastCheckTime) {
                const lastCheck = new Date(monitor.lastCheckTime);
                const diffMinutes = Math.floor((now.getTime() - lastCheck.getTime()) / (1000 * 60));
                shouldCheck = diffMinutes >= (monitor.checkInterval || 60);
            } else {
                shouldCheck = true; // 如果从未检查过，则立即检查
            }

            if (shouldCheck) {
                try {
                    // 获取邮箱的访问令牌
                    const tokenInfoStr = await env.KV.get(`refresh_token_${monitor.email}`);
                    if (!tokenInfoStr) {
                        console.log(`邮箱 ${monitor.email} 未授权`);
                        continue;
                    }

                    const tokenInfo = JSON.parse(tokenInfoStr);
                    const access_token = await get_access_token(tokenInfo, env.ENTRA_CLIENT_ID, env.ENTRA_CLIENT_SECRET);

                    // 获取最新邮件
                    const emails = await getEmails(access_token, 1);
                    if (emails.length === 0) {
                        console.log(`邮箱 ${monitor.email} 没有邮件`);
                        continue;
                    }

                    const latestEmail = emails[0];

                    // 更新检查时间
                    monitor.lastCheckTime = currentTime;
                 

                    // 获取最新邮件的时间戳
                    const latestEmailTime = new Date(latestEmail.date.received || latestEmail.date.created || latestEmail.date.sent || latestEmail.date.modified).getTime();
                    const lastEmailTime = monitor.lastEmailTimestamp ? new Date(monitor.lastEmailTimestamp).getTime() : 0;
                    //console.log(JSON.stringify(latestEmail),latestEmailTime,lastEmailTime)
                    // 如果最新邮件的时间戳大于用户设置的时间戳，且ID不同，则认为有新邮件
                    if (latestEmailTime > lastEmailTime && (!monitor.lastEmailId || monitor.lastEmailId !== latestEmail.id)) {
                        // 只更新最新邮件ID，不更新lastEmailTimestamp（该值由用户手动设置）
                        monitor.lastEmailId = latestEmail.id;

                        // 发送飞书通知
                        const notificationContent = `邮箱 ${monitor.email} 收到新邮件\n主题: ${latestEmail.subject}\n发件人: ${latestEmail.from}\n时间: ${latestEmail.date.received}\n预览: ${latestEmail.preview || '无预览内容'}`;

                        await sendFeishuMessageText(feishuToken, feishuConfig.receive_id, notificationContent);
                        console.log(`已发送邮箱 ${monitor.email} 的新邮件通知`);
                    } else {
                        console.log(`邮箱 ${monitor.email} 没有新邮件`);
                    }
                } catch (error) {
                    console.error(`检查邮箱 ${monitor.email} 失败:`, error);
                }
            }
        }

        // 保存更新后的设置
        await env.KV.put(KV_KEY, JSON.stringify(settings));
        console.log('邮箱监控完成');
    } catch (error) {
        console.error('邮箱监控出错:', error);
    }
}

// 启动服务器
const port = parseInt(process.env.PORT || '8788')
serve({
    fetch: (request: Request, env) => app.fetch(request, { ...env, ...process.env }),
    port
}, () => {
    console.log(`Server running at http://localhost:${port}`)

    // 启动定时监控邮箱
    setInterval(() => {
        const envWithKV = { ...process.env, KV: kv };
        checkEmailsForNewMessages(envWithKV as unknown as Env);
    }, 60000); // 每分钟检查一次
})

export default app