import fetch from "./fetch";
import OSS from "ali-oss";
import COS from "cos-js-sdk-v5";
import Buffer from "buffer-from";
import { v4 as uuidv4 } from "uuid";

const defaultConfig = {
    username: "filess",
    repo: "images",
    branch: "master",
    accessToken: [
        "7715d7ca67b5d3837cfdoocsmde8c38421815aa423510af",
        "c411415bf95dbe39625doocsmd5047ba9b7a2a6c9642abe",
        "2821cd8819fa345c053doocsmdca86ac653f8bc20db1f1b",
        "445f0dae46ef1f2a4d6doocsmdc797301e94797b4750a4c",
        "cc1d0c1426d0fd0902bdoocsmdd2d7184b14da61b86ec46",
        "b67e9d15cb6f910492fdoocsmdac6b44d379c953bb19eff",
        "618c4dc2244ccbbc088doocsmd125d17fd31b7d06a50cf3",
        "a4b581732e1c1507458doocsmdc5b223b27dae5e2e16a55",
    ],
};

function fileUpload(content, file) {
    const imgHost = localStorage.getItem("imgHost");
    !imgHost && localStorage.setItem("imgHost", "default");
    switch (imgHost) {
        case "aliOSS":
            return aliOSSFileUpload(content, file.name);
        case "txCOS":
            return txCOSFileUpload(file);
        case "github":
        default:
            return ghFileUpload(content, file.name);
    }
}

function getGitHubCommonConfig(username, repo, branch, token) {
    const date = new Date();
    const dir =
        date.getFullYear() +
        "/" +
        (date.getMonth() + 1).toString().padStart(2, "0") +
        "/" +
        date.getDate().toString().padStart(2, "0");
    return {
        method: "put",
        headers: {
            Authorization: "token " + token,
        },
        branch: branch,
        url: `https://api.github.com/repos/${username}/${repo}/contents/${dir}/`,
    };
}

function getDefaultConfig() {
    const token = defaultConfig.accessToken[
        Math.floor(Math.random() * defaultConfig.accessToken.length)
    ].replace("doocsmd", "");
    return getGitHubCommonConfig(
        defaultConfig.username,
        defaultConfig.repo,
        defaultConfig.branch,
        token
    );
}

function getGitHubConfig() {
    const githubConfig = JSON.parse(localStorage.getItem("githubConfig"));
    const repoUrl = githubConfig.repo
        .replace("https://github.com/", "")
        .replace("http://github.com/", "")
        .replace("github.com/", "")
        .split("/");
    const username = repoUrl[0];
    const repo = repoUrl[1];
    return getGitHubCommonConfig(
        username,
        repo,
        githubConfig.branch,
        githubConfig.accessToken
    );
}

async function ghFileUpload(content, filename) {
    const isDefault = localStorage.getItem("imgHost") !== "github";
    const config = isDefault ? getDefaultConfig() : getGitHubConfig();
    const dateFilename =
        new Date().getTime() + "-" + uuidv4() + "." + filename.split(".")[1];
    const res = await fetch({
        url: config.url + dateFilename,
        method: config.method,
        headers: config.headers,
        data: {
            branch: config.branch || "master",
            message: `Upload by ${window.location.href}`,
            content: content,
        },
    });
    const githubResourceUrl = "raw.githubusercontent.com/filess/images/master/";
    const cdnResourceUrl = "cdn.jsdelivr.net/gh/filess/images@master/";
    return isDefault
        ? res.content.download_url.replace(githubResourceUrl, cdnResourceUrl)
        : res.content.download_url;
}

async function aliOSSFileUpload(content, filename) {
    const dateFilename =
        new Date().getTime() + "-" + uuidv4() + "." + filename.split(".")[1];
    const aliOSSConfig = JSON.parse(localStorage.getItem("aliOSSConfig"));
    const buffer = Buffer(content, "base64");
    try {
        const dir = aliOSSConfig.path + "/" + dateFilename;
        const client = new OSS({
            region: aliOSSConfig.region,
            bucket: aliOSSConfig.bucket,
            accessKeyId: aliOSSConfig.accessKeyId,
            accessKeySecret: aliOSSConfig.accessKeySecret,
        });
        const res = await client.put(dir, buffer);
        return aliOSSConfig.cdnHost == ""
            ? res.url
            : aliOSSConfig.cdnHost +
                  "/" +
                  (aliOSSConfig.path == "" ? dateFilename : dir);
    } catch (e) {
        return Promise.reject(e);
    }
}

async function txCOSFileUpload(file) {
    const dateFilename =
        new Date().getTime() + "-" + uuidv4() + "." + file.name.split(".")[1];
    const txCOSConfig = JSON.parse(localStorage.getItem("txCOSConfig"));
    const cos = new COS({
        SecretId: txCOSConfig.secretId,
        SecretKey: txCOSConfig.secretKey,
    });
    return new Promise((resolve, reject) => {
        cos.putObject(
            {
                Bucket: txCOSConfig.bucket,
                Region: txCOSConfig.region,
                Key: txCOSConfig.path + "/" + dateFilename,
                Body: file,
            },
            function (err, data) {
                if (err) {
                    reject(err);
                } else if (txCOSConfig.cdnHost) {
                    // if cdnHost exists
                    resolve(
                        txCOSConfig.path != ""
                            ? txCOSConfig.cdnHost +
                                  "/" +
                                  txCOSConfig.path +
                                  "/" +
                                  dateFilename
                            : txCOSConfig.cdnHost + "/" + dateFilename
                    );
                } else {
                    // if cdnHost not exists
                    reject(data.Location);
                }
            }
        );
    });
}

export default {
    fileUpload,
};