const axios = require('axios');
const fs = require('fs');
const crypto = require('crypto');
const FormData = require('form-data');
const request = require("request")
const https = require('https');
const size = 4 * 1024 * 1024
let promistlist = []
let daxiao
function getsize(url) {
    return new Promise((res, err) => {
        fs.stat("./a.exe", {}, (err, stats) => {

            if (!err) {
                 daxiao = stats.size
                let fenpian = Math.ceil(stats.size / size)
                res({
                    size: daxiao,
                    num: fenpian
                })
            } else {
                err("文件路径错误或文件不存在")
            }

        })
    })
}

function getfile({ i, url }) {

    return new Promise((res) => {
        let data = '';
        let start = i * size
        let end = (i + 1) * size - 1
        const stream = fs.createReadStream(url, {
            start,
            end
        })
        stream.on('data', (chunk) => {
            // console.log(`接收到 ${chunk.length} 个字节的数据`);
            if (!data) {
                data = chunk
            } else {
                data = Buffer.concat([data, chunk])
            }
        });
        stream.on('end', () => {
            res(data)
        });
    })

}

function upgetfile({ i, url }) {
    i = parseInt(i)
    return new Promise((res) => {
        let data = '';
        const stream = fs.createReadStream(url, {
            start: i * size,
            end: (i + 1) * size - 1
        })
        // res(stream)
        stream.on('data', (chunk) => {
            // console.log(`接收到 ${chunk.length} 个字节的数据`);

            if (!data) {
                data = chunk
            } else {
                data = Buffer.concat([data, chunk])
            }
        });
        stream.on('end', () => {
            res(data)
        });
    })

}

async function getmd5list(url, info) {
    promistlist = []
    // fs.createReadStream
    for (let i = 0; i < info.num; i++) {
        let data = await getfile({ url, i })
        const hash = crypto.createHash('md5');
        hash.update(data);
        const md5 = hash.digest('hex');
        console.log(md5);
        promistlist.push(md5)
    }
    return promistlist
}

async function precreate(info, url) {
    let block_list = await getmd5list(url, info)
    block_list = JSON.stringify(block_list)
    let data = {
        path: encodeURI('/app/服务器备份/baidu.exe'),
        size: info.size,
        isdir: 0,
        autoinit: 1,
        block_list,
        rtype: 1,

    }
    let str = ""
    for (let i in data) {
        str += `${i}=${data[i]}&`
    }
    axios.post('https://pan.baidu.com/rest/2.0/xpan/file?method=precreate&access_token=121.f22e108b18705600a0dc665d12cf71ae.Yngau4V98lC_hUvMGnljcSZurJnoohuPYavgk4n.HJDCoQ', str).then((res) => {
        upload({
            url,
            info,
            uploadid: res.data.uploadid,
            pian: res.data.block_list
        })
    })
}

function uploadfile(i,data,uploadid){
    return new Promise((r)=>{
        console.log(data.length)
        let urls = '/rest/2.0/pcs/superfile2?'
        let params = {
            access_token: '121.f22e108b18705600a0dc665d12cf71ae.Yngau4V98lC_hUvMGnljcSZurJnoohuPYavgk4n.HJDCoQ',
            method: 'upload',
            type: "tmpfile",
            path: encodeURI('/app/服务器备份/baidu.exe'),
            uploadid,
            partseq: i
        }
        for (let j in params) {
            urls += j + '=' + params[j] + '&'
        }
    const options = {
        hostname: 'd.pcs.baidu.com',
        port: 443,
        path: urls,
        method: 'PUT',
        headers: {
            'content-type':'multipart/form-data',
            'Content-Length': data.length
          }
      };
      
      const req = https.request(options, (res) => {
        console.log('状态码:', res.statusCode);
        console.log('请求头:', res.headers);
      
        res.on('data', (d) => {
          process.stdout.write(d);
        });
        r(1)
      });
      
      req.on('error', (e) => {
        console.error(e);
      });
      req.write(data);
      req.end();
    })
 
}

async function upload({ url, info, uploadid, pian }) {
    for (let i of pian) {
        let data = await upgetfile({ url, i })
        await uploadfile(i,data,uploadid)
        // var formData = new FormData();
        // formData.append('file', data);
        // console.log(formData.getBuffer())
        //  headers['content-length'] = length;
        // const from = new FormData();
        // // const blob = Buffer.from(data);
        // from.append('file', data);
        // axios.post('https://d.pcs.baidu.com/rest/2.0/pcs/superfile2', {file: data}, {
        //     headers: {
        //         'content-type': 'multipart/form-data; boundary=----WebKitFormBoundary' + new Date().getTime()
        //     },
        //     params: {
        //         access_token: '121.f22e108b18705600a0dc665d12cf71ae.Yngau4V98lC_hUvMGnljcSZurJnoohuPYavgk4n.HJDCoQ',
        //         method: 'upload',
        //         type: "tmpfile",
        //         path: encodeURI('/app/服务器备份/baidu.exe'),
        //         uploadid,
        //         partseq: i
        //     }
        // }).then((res) => {
        //     console.log(res)
        // }).catch(err => {
        //     console.log(err)
        // })
        // var headers = formData.getHeaders();
        // formData.getLength(async function (err, length) {
        //     if (err) {
        //         return;
        //     }
        //     //设置长度，important!!!
        //     headers['content-length'] = length;
        //     // let $upload = axios.create({ withCredentials: false });
        //     // await $upload.post('https://d.pcs.baidu.com/rest/2.0/pcs/superfile2', formData, {
        //     //     headers,
        //     //     params: {
        //     //         access_token: '121.f22e108b18705600a0dc665d12cf71ae.Yngau4V98lC_hUvMGnljcSZurJnoohuPYavgk4n.HJDCoQ',
        //     //         method: 'upload',
        //     //         type: "tmpfile",
        //     //         path: encodeURI('/app/服务器备份/baidu.exe'),
        //     //         uploadid,
        //     //         partseq: i
        //     //     }
        //     // }).then((res) => {
        //     //     console.log(res)
        //     // }).catch(err => {
        //     //     console.log(err)
        //     // })
        //     // await axios.post(data.url, formData, { headers }).then(res => {
        //     //     console.log("上传成功", res.data);
        //     // }).catch(res => {
        //     //     console.log(res.data);
        //     // })
        //     let url = 'https://d.pcs.baidu.com/rest/2.0/pcs/superfile2?'
        //     let params = {
        //         access_token: '121.f22e108b18705600a0dc665d12cf71ae.Yngau4V98lC_hUvMGnljcSZurJnoohuPYavgk4n.HJDCoQ',
        //         method: 'upload',
        //         type: "tmpfile",
        //         path: encodeURI('/app/服务器备份/baidu.exe'),
        //         uploadid,
        //         partseq: i
        //     }
        //     for (let j in params) {
        //         url += j + '=' + params[j] + '&'
        //     }
        //     request.post({
        //         url, formData, function(err, httpResponse, body) {
        //             if (err) {
        //                 return console.error('upload failed:', err);
        //             }
        //             console.log('Upload successful!  Server responded with:', body);
        //         }
        //     })

        // })
        // let urls = 'https://d.pcs.baidu.com/rest/2.0/pcs/superfile2?'
        //     let params = {
        //         access_token: '121.f22e108b18705600a0dc665d12cf71ae.Yngau4V98lC_hUvMGnljcSZurJnoohuPYavgk4n.HJDCoQ',
        //         method: 'upload',
        //         type: "tmpfile",
        //         path: encodeURI('/app/服务器备份/baidu.exe'),
        //         uploadid,
        //         partseq: i
        //     }
        //     for (let j in params) {
        //         urls += j + '=' + params[j] + '&'
        //     }
        //     // console.log(urls)
        //     request.post({
        //         url: urls, form:{file: Buffer.from(data)}, function(err, httpResponse, body) {
        //             console.log(111)
        //             if (err) {
        //                 return console.error('upload failed:', err);
        //             }
        //             console.log('Upload successful!  Server responded with:', body);
        //         }
        //     })

        // formData.submit(`https://d.pcs.baidu.com/rest/2.0/pcs/superfile2?method=upload&access_token=121.f22e108b18705600a0dc665d12cf71ae.Yngau4V98lC_hUvMGnljcSZurJnoohuPYavgk4n.HJDCoQ&type=tmpfile&path=${encodeURI('/app/服务器备份/baidu.exe')}&uploadid=${uploadid}&partseq=${i}`, function(err, res) {
        //     console.log(res.statusCode);
        //   });

    }
    // https://pan.baidu.com/rest/2.0/xpan/file?method=create
    let data = {
        path:encodeURI('/app/服务器备份/baidu.exe'),
        size: daxiao,
        isdir:0,
        rtype: 1,
        uploadid,
        block_list:JSON.stringify(promistlist)

    }
    let s = ''
    for(let i in data){
        s += i + "=" + data[i] + '&'
    }
    console.log(s)
    axios.post('https://pan.baidu.com/rest/2.0/xpan/file?method=create',s,{
        params:{
            access_token: '121.f22e108b18705600a0dc665d12cf71ae.Yngau4V98lC_hUvMGnljcSZurJnoohuPYavgk4n.HJDCoQ',
        }
    }).then((res)=>{
        console.log(res)
    })
}


async function start(url) {
    let info;
    try {
        info = await getsize(url)
    } catch (err) {
        console.log(err)
    }
    console.log(info)
    precreate(info, url)
}
module.exports = {
    start
}