const fs = require("fs");
const path = require("path");
const moment = require('moment');
const fse = require("fs-extra");

const archiver = require('archiver');
// 可以略过的md

const ignore_md = ["000readme-chinesebqb.md"];

// 可以配置
const user_name = "zhaoolee";
const repo_name = "ChineseBQB";
const N = "\n";


async function create_zip(md_dir_list) {

    console.log("create_zip=md_dir_list=>>", md_dir_list)

    for (let i = 0; i < md_dir_list.length; i++) {

        if (fse.existsSync(path.join(__dirname, md_dir_list[i])) + ".zip") {
            fse.removeSync(path.join(__dirname, md_dir_list[i]) + ".zip")
        }

        await new Promise((resolve, reject) => {

            const output = fs.createWriteStream(path.join(__dirname, md_dir_list[i]) + ".zip");
            const archive = archiver('zip', {
                zlib: { level: 9 } // Sets the compression level.
            });

            archive.on('error', function (err) {
                throw err;
            });

            output.on('close', function () {
                console.log(archive.pointer() + ' total bytes');
                resolve();
            });

            archive.pipe(output);
            archive.directory(path.join(__dirname, md_dir_list[i]), false); // 文件夹压缩
            archive.finalize();



        })


    }







}

// 根据BQB结尾的文件夹自动生成模板文件
async function create_bqb_md() {

    return new Promise(async (resolve, reject) => {
        let file_list = fs.readdirSync(path.join(__dirname, "./"));
        let md_dir_list = [];
        file_list.map((file_name_value, file_name_index) => {
            if (file_name_value.endsWith("BQB")) {
                md_dir_list.push(file_name_value);
            }
        });
        console.log("md_dir_list::", md_dir_list);
        // 移除旧的md_dir, 创建新的md_dir
        await create_zip(md_dir_list)
        // 如果对应的md文件已经存在则略过, 如果不存在,则创建一个

        for (let i = 0; i < md_dir_list.length; i++) {
            let tmp_md_path = "./chinesebqb-md/" + md_dir_list[i] + ".md";
            fs.access(tmp_md_path, function (err) {
                if (err) {
                    let top = md_dir_list[i].slice(0, 3);

                    top = 1000 - parseInt(top);

                    if (isNaN(top) === true) {
                        top = 0;
                    }
                    console.log("top::", top);
                    // 构建内容
                    let content = `---${"\n"}title: ${md_dir_list[i]}${"\n"}---${"\n"}${"\n"}------${"\n"}${"## 以下为收录的表情包库"}${"\n"}${"\n"}<!-- more -->${"\n"}`;
                    // 去创建文件
                    fs.writeFileSync(tmp_md_path, content);
                    console.log(tmp_md_path, "创建完成");
                    if (i === md_dir_list.length - 1) {
                        console.log("md文件已初始化完成");
                        resolve();
                    }

                } else {
                    console.log(tmp_md_path, "已经存在! 无需创建");
                    if (i === md_dir_list.length - 1) {
                        console.log("md文件已初始化完成");
                        resolve();
                    }
                }
            });


        }

    });

}


// 读取_posts下面已BQB.md结尾的文件
function get_bqb_md_name_list() {
    let file_list = fs.readdirSync(path.join(__dirname, "./chinesebqb-md/"));
    let md_list = [];
    file_list.map((file_name_value, file_name_index) => {
        if (file_name_value.endsWith(".md") && (ignore_md.indexOf(file_name_value) === -1)) {
            md_list.push(file_name_value);
        }
    });
    // console.log("md_list::", md_list);
    return md_list;
}

// 读取表情包目录下的图片, 并拼接出图片未来的url
function get_images_src(md_name) {



    let dir_name = md_name.slice(0, md_name.length - 3);
    files = fs.readdirSync(path.join(__dirname, "./" + dir_name));
    images = [];
    files.map((file_name, file_index) => {
        if (file_name.endsWith(".jpeg") || file_name.endsWith(".jpg") || file_name.endsWith(".gif") || file_name.endsWith(".png") || file_name.endsWith(".JPEG") || file_name.endsWith(".JPG") || file_name.endsWith(".GIF") || file_name.endsWith(".PNG") || file_name.endsWith(".webp")) {
            let image_src = "https://www.v2fy.com/asset/0i/" + repo_name + "/" + dir_name + "/" + file_name;
            images.push(image_src);
        }
    });

    console.log("images_len::", images.length);


    return images;


}

// 将images信息转换为md文本信息
function image_to_md_info(images) {
    let all_md_info = "";
    images.map((image_info, image_index) => {

        let md_info = `<img height='200px' style='height:200px;'  src='${image_info}' data-original='${image_info}' /><br/>`;
        md_info = md_info + `<h6>下载地址: [${image_info}](${image_info})</h6><hr/>`;

        all_md_info = all_md_info + md_info;
    });
    // console.log("all_md_info:", all_md_info);
    return all_md_info;
}

// 将md_info 追加到 对应文件的 <!-- more --> 之后
async function md_info_replace_more_info(md_name_value, md_info) {

    // file_path
    let file_path = path.join(__dirname, "./chinesebqb-md/" + md_name_value);

    // 原有的md_info
    let old_md_info = fs.readFileSync(file_path).toString();

    // 需要替换的md_info
    let replace_md_info = "<!-- more -->\n" + md_info;

    // 新的md_info
    let start_index = old_md_info.indexOf("<!-- more -->");
    let end_index = old_md_info.length;

    let old_content = old_md_info.slice(start_index, end_index);
    let new_content = "<!-- more -->\n\n" + md_info;



    let new_md_info = old_md_info.replace(old_content, new_content);


    await fs.writeFileSync(file_path, new_md_info);

    console.log(file_path, "文件生成成功");

    return new_md_info;


}

// 处理readme
class ReadmeContents {
    constructor() {
        this.state = {
            readme_contents_info: []
        };
        this.push_readme_contents_info = this.push_readme_contents_info.bind(this);
        this.get_readme_contents_info = this.get_readme_contents_info.bind(this);
        this.create_readme_content_md = this.create_readme_content_md.bind(this);
        this.update_readme = this.update_readme.bind(this);
    }

    // 为目录数组增加元素
    push_readme_contents_info(ele) {
        this.state.readme_contents_info.push(ele);
        return this.state.readme_contents_info;
    }

    // 获取目录数组
    get_readme_contents_info() {
        return this.state.readme_contents_info;
    }

    create_readme_content_md() {
        // 统计所有图片的数量
        let all_images_number = 0;
        for (let i = 0; i < this.state.readme_contents_info.length; i++) {
            all_images_number += this.state.readme_contents_info[i]["images_number"];
        }

        // 定义标题

        let title = `表情包目录(共收录${all_images_number}张表情包)Emoticon package directory (commonly included ${all_images_number} emoticon pack)`;

        // 定义标题行

        let title_row = `${"\n\n"}| Example(示例)  |  链接(Entrance link) | 下载系列表情包合集(Download)  | ${"\n"}| :---: | :---: | :---: |${"\n"}`;

        // 定义单行数据  图片样式/链接样式
        let all_row_data = "";
        let tmp_dir_name = "";


        // 正序
        // for(let n = 0; n<this.state.readme_contents_info.length; n++){
        //     let dir_name = [...(this.state.readme_contents_info[n].readme_contents_info_href.split("/"))].reverse()[1];
        //     console.log(dir_name);
        //     let data_row = `| <img height='100px' style='height:100px;' src=${this.state.readme_contents_info[n].readme_contents_info_img} /> | [${dir_name}(已收录${this.state.readme_contents_info[n].images_number}张)](${this.state.readme_contents_info[n].readme_contents_info_href}) |${"\n"}`;
        //     all_row_data+=data_row;
        // }


        // 倒序

        for (let n = (this.state.readme_contents_info.length) - 1; n > -1; n--) {
            let dir_name = [...(this.state.readme_contents_info[n].readme_contents_info_href.split("/"))].reverse()[1];
            console.log(dir_name);
            let data_row = `| <img height='100px' style='height:100px;' src='${this.state.readme_contents_info[n].readme_contents_info_img}' /> | [${dir_name}(已收录${this.state.readme_contents_info[n].images_number}张)](${this.state.readme_contents_info[n].readme_contents_info_href}) | [直链下载](https://github.com/zhaoolee/ChineseBQB/raw/master/${dir_name}.zip) |${"\n"}`;
            all_row_data += data_row;
        }


        // 生成数据生成时间

        let now_date = moment(new Date()).format("YYYY-MM-DD");

        let now_date_desc = `> 数据生成时间: ${now_date}${"\n"}${"\n"}`;


        // 拼接

        let all_table_data = title + title_row + all_row_data + now_date_desc;


        // 返回

        console.log("all_table_data::", all_table_data);

        return all_table_data;

    }

    // 更新readme信息
    async update_readme() {

        // 获取README中需要被替换的部分
        let readme_content = fs.readFileSync(path.join(__dirname, "chinesebqb-md", "000readme-chinesebqb.md")).toString();
        let start_index = readme_content.indexOf("表情包目录");
        let end_index = readme_content.indexOf("BQBEND");
        let old_content = readme_content.slice(start_index, end_index);

        // 生成新的内容


        // 获取生成的数据
        let new_content = this.create_readme_content_md();

        // 替换内容
        readme_content = readme_content.replace(old_content, new_content);



        // await fs.writeFileSync("./chinesebqb-md/000readme-chinesebqb.md", readme_content);

        await fs.writeFileSync(path.join(__dirname, "chinesebqb-md", "000readme-chinesebqb.md"), readme_content)

        console.log("README生成成功");

    }
}


async function main() {

    // 初始化md文件
    await create_bqb_md();

    let md_name_list = get_bqb_md_name_list();

    let readme_contents_obj = new ReadmeContents();


    await md_name_list.map(async (md_name_value, md_name_index) => {
        // 初始化当前目录信息
        let readme_contents_info_obj = {
            readme_contents_info_img: "",
            readme_contents_info_href: "",
            images_number: 0
        };

        let images = await get_images_src(md_name_value);
        readme_contents_info_obj.images_number = images.length;
        // 通过images生成md文本
        let md_info = image_to_md_info(images);
        // 将images信息转换为md信息, 并写入md文件
        await md_info_replace_more_info(md_name_value, md_info);
        // 目录索引图获取: 获取以0命名的图片信息,写入readme_contents_info_obj.readme_contents_info_obj


        for (let i = 0; i < images.length; i++) {
            let file_name = [...(images[i].split("/"))].pop();
            if (file_name.startsWith("000000")) {
                readme_contents_info_obj.readme_contents_info_img = images[i];
            }
            // 如果没有以0.命名的图片, 则按照默认排序, 取第一张
            if ((i === images.length - 1) && (file_name.startsWith("000000") === false)) {
                readme_contents_info_obj.readme_contents_info_img = images[0];
            }

        }




        // 页面链接获取
        let dir_name = md_name_value.slice(0, md_name_value.length - 3);

        let readme_contents_info_href = "https://www.v2fy.com/p/" + dir_name + "/?post_category=中国人的表情包-pp制造计划-chinesebqb";
        readme_contents_info_obj.readme_contents_info_href = readme_contents_info_href;


        readme_contents_obj.push_readme_contents_info(readme_contents_info_obj);

        if (md_name_index === md_name_list.length - 1) {
            readme_contents_obj.update_readme();

        }


    });




}


main();