const version = process.argv[2];
if (!version) {
    console.error("Version not passed to create-gitea-release.js");
    process.exit(1);
}
import fs from "fs-extra";
import path from "path";
import { spawnSync } from "child_process";
import { fileURLToPath } from "url";
import fetch from "node-fetch";
import dotenv from "dotenv";
dotenv.config({ path: "./.env" });

// Load package.json version
// const pkg = await fs.readJson('package.json');
// const version = pkg.version;

if (!version) {
    console.error("Version not found in package.json");
    process.exit(1);
}

// Resolve the directory of the current script
const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

// Absolute path to BUILD_NUMBER
const buildNumberPath = path.resolve(__dirname, "../BUILD_NUMBER");

// Load build number from BUILD_NUMBER file
let buildNumber = "0";
try {
    rawBuild = (await fs.readFile(buildNumberPath, "utf8")).trim();
    console.log("Raw build", rawBuild);
    if (rawBuild) {
        const [numPart, namePart] = rawBuild.split("-");
        const num = parseInt(numPart, 10);

        if (!isNaN(num) && namePart) {
            buildNumber = `${num - 1}-${namePart}`;
        }
    }
} catch {
    console.warn("BUILD_NUMBER file not found, defaulting to 0");
}

// Compose full version string with build number
const fullVersion = `${version}.${buildNumber}`;

const { GITEA_URL, GITEA_USERNAME, GITEA_REPO, GITEA_TOKEN } = process.env;

if (!GITEA_URL || !GITEA_USERNAME || !GITEA_REPO || !GITEA_TOKEN) {
    console.error(
        "Missing required environment variables (GITEA_URL, GITEA_USERNAME, GITEA_REPO, GITEA_TOKEN)"
    );
    process.exit(1);
}

// 1) Generate or update CHANGELOG.md using conventional-changelog CLI
console.log("Generating CHANGELOG.md...");
const result = spawnSync(
    "npx",
    [
        "conventional-changelog",
        "-p",
        "conventionalcommits",
        "-i",
        "CHANGELOG.md",
        "-s",
        "-r",
        "0",
    ],
    { stdio: "inherit", shell: true }
);

if (result.status !== 0) {
    console.error("Failed to generate changelog");
    process.exit(1);
}

// 2) Read changelog content for the current version
const changelog = await fs.readFile("CHANGELOG.md", "utf8");
const regex = new RegExp(`## \\[${version}\\][\\s\\S]*?(?=## \\[|$)`, "m");
const releaseNotes = changelog.match(regex)?.[0] || changelog;

console.log(`Release notes for v${version} saved`);

// 3) Create Gitea release
const createRelease = async () => {
    const apiUrl = `https://${GITEA_URL}/api/v1/repos/${GITEA_USERNAME}/${GITEA_REPO}/releases`;
    const releaseData = {
        tag_name: `v${version}`,
        name: `v${version}`,
        body: releaseNotes,
        draft: false,
        prerelease: true,
    };

    const response = await fetch(apiUrl, {
        method: "POST",
        headers: {
            Authorization: `token ${GITEA_TOKEN}`,
            "Content-Type": "application/json",
        },
        body: JSON.stringify(releaseData),
    });

    if (!response.ok) {
        const errorText = await response.text();
        throw new Error(
            `Failed to create release: ${response.status} - ${errorText}`
        );
    }

    const release = await response.json();
    console.log("Release created:", release.html_url || release.url);
    return release;
};

// 4) Upload release zip asset
const uploadAsset = async (release) => {
    const apiUrl = `https://${GITEA_URL}/api/v1/repos/${GITEA_USERNAME}/${GITEA_REPO}/releases/assets?tag=${release.tag_name}`;
    const filePath = `releases/release-${fullVersion}.zip`;

    if (!(await fs.pathExists(filePath))) {
        console.warn(`Zip file not found: ${filePath}. Skipping asset upload.`);
        return;
    }

    const FormData = (await import("form-data")).default;
    const form = new FormData();
    form.append("name", `release-${fullVersion}.zip`);
    form.append("attachment", fs.createReadStream(filePath));

    const response = await fetch(apiUrl, {
        method: "POST",
        headers: {
            Authorization: `token ${GITEA_TOKEN}`,
            ...form.getHeaders(),
        },
        body: form,
    });

    if (!response.ok) {
        const errorText = await response.text();
        throw new Error(
            `Failed to upload asset: ${response.status} - ${errorText}`
        );
    }

    const asset = await response.json();
    console.log("Asset uploaded:", asset.browser_download_url || asset.url);
};

(async () => {
    try {
        const release = await createRelease();
        await uploadAsset(release);
    } catch (err) {
        console.error(err);
        process.exit(1);
    }
})();