import * as docx from "docx";
import cookie from "cookie";
import fs from "fs";
import {execSync} from "child_process";

function getGitRevision() {
    // get git revision and branch
    try {
        const revision = execSync("git rev-parse --short HEAD", {stdio: "pipe"}).toString().trim();
        const branch = execSync("git rev-parse --abbrev-ref HEAD", {stdio: "pipe"}).toString().trim();
        return {revision, branch};
    } catch (e) {
        return {revision: "unknown", branch: "unknown"};
    }
}

// 创建目录
function createDirectoryIfNotExists(dirPath) {
    if (!fs.existsSync(dirPath)) {
        fs.mkdirSync(dirPath, {recursive: true});
    }
}

function extractCookie(cookies) {
    let jwtSession = null;
    let jwtToken = null;
    let ds = null;
    let dsr = null;
    let you_subscription = null;
    let youpro_subscription = null;

    cookies = cookie.parse(cookies);
    if (cookies["stytch_session"]) jwtSession = cookies["stytch_session"];
    if (cookies["stytch_session_jwt"]) jwtToken = cookies["stytch_session_jwt"];
    if (cookies["DS"]) ds = cookies["DS"];
    if (cookies["DSR"]) dsr = cookies["DSR"];
    if (cookies["you_subscription"]) you_subscription = cookies["you_subscription"];
    if (cookies["youpro_subscription"]) youpro_subscription = cookies["youpro_subscription"];

    return {jwtSession, jwtToken, ds, dsr, you_subscription, youpro_subscription};
}

function getSessionCookie(jwtSession, jwtToken, ds, dsr, you_subscription, youpro_subscription) {
    let sessionCookie = [];

    // 处理旧版 cookie
    if (jwtSession && jwtToken) {
        sessionCookie = [
            {
                name: "stytch_session",
                value: jwtSession,
                domain: "you.com",
                path: "/",
                expires: 1800000000,
                httpOnly: false,
                secure: true,
                sameSite: "Lax",
            },
            {
                name: "ydc_stytch_session",
                value: jwtSession,
                domain: "you.com",
                path: "/",
                expires: 1800000000,
                httpOnly: true,
                secure: true,
                sameSite: "Lax",
            },
            {
                name: "stytch_session_jwt",
                value: jwtToken,
                domain: "you.com",
                path: "/",
                expires: 1800000000,
                httpOnly: false,
                secure: true,
                sameSite: "Lax",
            },
            {
                name: "ydc_stytch_session_jwt",
                value: jwtToken,
                domain: "you.com",
                path: "/",
                expires: 1800000000,
                httpOnly: true,
                secure: true,
                sameSite: "Lax",
            }
        ];
    }

    // 处理新版 cookie
    if (ds) {
        sessionCookie.push({
            name: "DS",
            value: ds,
            domain: "you.com",
            path: "/",
            expires: 1800000000,
            httpOnly: false,
            secure: true,
            sameSite: "Lax",
        });
    }
    if (dsr) {
        sessionCookie.push({
            name: "DSR",
            value: dsr,
            domain: "you.com",
            path: "/",
            expires: 1800000000,
            httpOnly: false,
            secure: true,
            sameSite: "Lax",
        });
    }

    if (you_subscription) {
        sessionCookie.push({
            name: "you_subscription",
            value: you_subscription,
            domain: "you.com",
            path: "/",
            expires: 1800000000,
            httpOnly: false,
            secure: true,
            sameSite: "Lax",
        });
    }

    if (youpro_subscription) {
        sessionCookie.push({
            name: "youpro_subscription",
            value: youpro_subscription,
            domain: "you.com",
            path: "/",
            expires: 1800000000,
            httpOnly: false,
            secure: true,
            sameSite: "Lax",
        });
    }

    // 添加隐身模式 cookie（如果启用）
    if (process.env.INCOGNITO_MODE === "true") {
        sessionCookie.push({
            name: "incognito",
            value: "true",
            domain: "you.com",
            path: "/",
            expires: 1800000000,
            secure: true,
        });
    }
    return sessionCookie;
}

function sleep(ms) {
    return new Promise((resolve) => setTimeout(resolve, ms));
}

function createDocx(content) {
    let paragraphs = [];
    content.split("\n").forEach((line) => {
        paragraphs.push(
            new docx.Paragraph({
                children: [new docx.TextRun(line)],
            })
        );
    });
    let doc = new docx.Document({
        sections: [
            {
                properties: {},
                children: paragraphs,
            },
        ],
    });
    return docx.Packer.toBuffer(doc).then((buffer) => buffer);
}

// eventStream util
function createEvent(event, data) {
    // if data is object, stringify it
    if (typeof data === "object") {
        data = JSON.stringify(data);
    }
    return `event: ${event}\ndata: ${data}\n\n`;
}

function extractPerplexityCookie(cookieString) {
    const cookies = cookie.parse(cookieString);
    return {
        sessionToken: cookies['__Secure-next-auth.session-token'],
        isIncognito: cookies['pplx.is-incognito'] === 'true'
    };
}

function getPerplexitySessionCookie(extractedCookie) {
    let sessionCookie = [];

    if (extractedCookie.sessionToken) {
        sessionCookie.push({
            name: "__Secure-next-auth.session-token",
            value: extractedCookie.sessionToken,
            domain: "www.perplexity.ai",
            path: "/",
            expires: 1800000000,
            httpOnly: true,
            secure: true,
            sameSite: "Lax",
        });
    }

    // 添加无痕模式 cookie (如果启用)
    if (process.env.INCOGNITO_MODE === "true") {
        sessionCookie.push({
            name: "pplx.is-incognito",
            value: "true",
            domain: "www.perplexity.ai",
            path: "/",
            expires: 1800000000,
            httpOnly: false,
            secure: true,
            sameSite: "Lax",
        });
    }

    return sessionCookie;
}

export {
    createEvent,
    createDirectoryIfNotExists,
    sleep,
    extractCookie,
    getSessionCookie,
    createDocx,
    getGitRevision,
    extractPerplexityCookie,
    getPerplexitySessionCookie
};