const axios = require('axios');
const fs = require('fs').promises;

// GitHub API 配置
const API_URL = "https://api.github.com";
const REPO_OWNER = "SwiftGGTeam";
const REPO_NAME = "the-swift-programming-language-in-chinese";
const BRANCH = "swift-6-beta-translation";

// 您的个人访问令牌
const TOKEN = process.env.GITHUB_TOKEN;

// 设置请求头
const headers = {
    "Authorization": `token ${TOKEN}`,
    "Accept": "application/vnd.github.v3+json"
};

async function getExistingIssues() {
    const issues = new Set();
    let page = 1;
    while (true) {
        const url = `${API_URL}/repos/${REPO_OWNER}/${REPO_NAME}/issues?state=all&per_page=100&page=${page}`;
        const response = await axios.get(url, { headers });
        if (response.data.length === 0) break;
        response.data.forEach(issue => issues.add(issue.title));
        page++;
    }
    return issues;
}

async function createIssue(title, body, labels) {
    try {
        const url = `${API_URL}/repos/${REPO_OWNER}/${REPO_NAME}/issues`;
        const data = { title, body, labels };
        const response = await axios.post(url, data, { headers });

        if (response.status === 201) {
            console.log(`Issue created successfully: ${title}`);
            return response.data;
        } else {
            console.log(`Failed to create issue: ${response.status}`);
            console.log(response.data);
            return null;
        }
    } catch (error) {
        console.error("Error creating issue:", error.message);
        return null;
    }
}

async function getFilesInDirectory(path) {
    try {
        const url = `${API_URL}/repos/${REPO_OWNER}/${REPO_NAME}/contents/${path}?ref=${BRANCH}`;
        const response = await axios.get(url, { headers });
        if (response.status === 200) {
            return response.data.filter(item => item.type === "file" && item.name.endsWith('.md'));
        } else {
            console.log(`Failed to get directory contents: ${response.status}`);
            return [];
        }
    } catch (error) {
        console.error("Error getting directory contents:", error.message);
        return [];
    }
}

function formatIssueTitle(filePath, estimatedTime) {
    const parts = filePath.split('/');
    const fileName = parts.pop().toLowerCase();
    const folderName = parts[parts.length - 1];

    // Convert camelCase or PascalCase to kebab-case
    const kebabFileName = fileName
        .replace(/([a-z0-9])([A-Z])/g, '$1-$2')
        .replace(/([A-Z])([A-Z][a-z])/g, '$1-$2')
        .toLowerCase();

    return `${folderName} / ${kebabFileName} ${estimatedTime}`;
}

function formatIssueBody(filePath) {
    const fileUrl = `https://github.com/${REPO_OWNER}/${REPO_NAME}/blob/${BRANCH}/${filePath}`;
    return `翻译文件：${fileUrl}\n请在认领任务前查看 Markdown 文件内容，并了解对应的 Swift 原文档链接和翻译预估时长`;
}

async function getFileContent(filePath) {
    try {
        const url = `${API_URL}/repos/${REPO_OWNER}/${REPO_NAME}/contents/${filePath}?ref=${BRANCH}`;
        const response = await axios.get(url, { headers });
        if (response.status === 200) {
            return Buffer.from(response.data.content, 'base64').toString('utf-8');
        }
    } catch (error) {
        console.error(`Error getting file content: ${error.message}`);
    }
    return null;
}

function extractEstimatedTime(content) {
    const match = content.match(/翻译估计用时：(.*)/);
    return match ? match[1].trim() : '';
}

async function processDirectory(path, existingIssues) {
    const files = await getFilesInDirectory(path);
    for (const file of files) {
        const content = await getFileContent(file.path);
        if (content) {
            const estimatedTime = extractEstimatedTime(content);
            const issueTitle = formatIssueTitle(file.path, estimatedTime);
            if (!existingIssues.has(issueTitle)) {
                const issueBody = formatIssueBody(file.path);
                await createIssue(issueTitle, issueBody, ["Swift 6 beta translation"]);
            } else {
                console.log(`Issue already exists: ${issueTitle}`);
            }
        }
    }
}

async function main() {
    const existingIssues = await getExistingIssues();
    console.log(`Found ${existingIssues.size} existing issues.`);

    const directories = [
        "swift-6.docc/GuidedTour",
        "swift-6.docc/LanguageGuide",
        "swift-6.docc/ReferenceManual"
    ];

    for (const dir of directories) {
        await processDirectory(dir, existingIssues);
    }
}

main().catch(console.error);