const express = require("express");
const bodyParser = require("body-parser");
const multer = require('multer'); // 接受视频流
const fs = require('fs');


var captcha = require("./kuaishou/ks_slid"); // 快手滑块
var hn = require("./hnw/hn"); // 惠农网 headers
var dy_signature = require("./douyin/_ac_signature"); // 抖音主页signature
var wx_func = require("./wx_video/wasm_video_decode"); // 微信视频号算法生成
var wx_tool = require("./wx_video/tools"); // 微信视频号解密
var xhs = require("./xhs/xs-commen"); // 小红书x-comment

let Module; // 保存对象存留
var app = express();
// 调整参数大小限制
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended: true}));
// 设置multer来处理上传的文件
const storage = multer.memoryStorage();
const upload = multer({ storage: storage });


app.post("/kuaishou/get_verifyParam", function(req, res){
    try{
        var info = req.body["info"]
        var result = captcha.getJose(info);
        res.send(result);
        console.log("[kuaishou-verify_fp] 请求成功");
    }catch(e){
        console.log(e);
        res.send("[kuaishou-verify_fp] verify fp error");
    }
});

app.get("/hn/get_signature", function(req, res){
    try{
        var noce = req.query.nonce;
        var result = hn.getS(noce);
        res.send(result);
        console.log("[hn-get_header] 请求成功");
    }catch(e){
        console.log(e);
        res.send("[hn-get_header] get header error");
    }
});


app.get("/douyin/get_signature", function(req, res){
    try{
        var noce = req.query.nonce;
        var result = dy_signature.get_ac_signature(noce);
        res.send(result);
        console.log("[douyin-get_signature] 请求成功");
    }catch(e){
        console.log(e);
        res.send("[douyin-get_signature] get signature error");
    }
});


app.post("/wx/decode", upload.single('file'), async (req,res) =>{
    if(Module == undefined){
        Module = await wx_func.createWasm(); // 创建modul实例
        console.log("[wx] 初始化 wasm 模块！");
    }

    try{
        if(req.file){
            var buffer = req.file.buffer; // 视频流
            var decodekey = req.query.decodekey; // 视频buffer
            var local_path = "wx_video/tmp/".concat(decodekey).concat(".mp4");
            console.log("[wx] 获取到的 decodekey:", decodekey,);
            wx_func.p.decryptor = new Module["WxIsaac64"](decodekey);
            wx_func.p.decryptor.generate(131072);
            var video_res = await wx_tool.main1(local_path, buffer, decodekey, wx_func.p.decryptor_array);
            wx_func.p.decryptor.delete();
            console.log("[wx] ", video_res);
            res.send(video_res);
        }else{
            res.send({"status": 500, "msg": "未识别文件"});
        }
    }catch(e){
         console.log(e);
         res.send("[wx] decode error");
    }
});


// 测试版
app.post("/wx/decode1", upload.single('file'), async (req,res) =>{
    if(Module == undefined){
        Module = await wx_func.createWasm(); // 创建modul实例
        console.log("[wx] 初始化 wasm 模块！");
    }

    try{
        var buffer = req.file.buffer; // 视频流
        console.log(buffer);
        var decodekey = req.query.decodekey; // 视频buffer
        var local_path = "wx_video/tmp/".concat(decodekey).concat(".mp4");
        console.log("[wx] 获取到的 decodekey:", decodekey,);
        wx_func.p.decryptor = new Module["WxIsaac64"](decodekey);
        wx_func.p.decryptor.generate(131072);
        const video_res = await wx_tool.main2(local_path, buffer, decodekey, wx_func.p.decryptor_array);
        wx_func.p.decryptor.delete();
        // 将Uint8Array转换为Buffer
        const new_buffer = Buffer.from(video_res);
        // 设置响应类型为二进制
        res.setHeader('Content-Type', 'application/octet-stream');

        // 发送Buffer数据
        res.send(new_buffer);
    }catch(e){
         console.log(e);
         res.send("[wx] decode error");
    }

});

app.post("/xhs/get_comment", function(req, res){
    try{
        var a1 = req.body["a1"];
        var xs = req.body["xs"];
        var xt = req.body["xt"];

        var result = xhs.getCommon(a1, xs, xt);
//        console.log(result);
        res.send(result);
        // res.send(window.code);
        // console.log(window.code);
        // console.log(a);
        console.log("[xhs-comment] 请求成功");
    }catch(e){
        console.log(e);
        res.send("[xhs-comment] verify fp error");
    }
    // res.send(result.toString());
});


app.listen(3000, ()=>{
    console.log("开启服务，端口3000", new Date().toString());
})