"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
var __importStar = (this && this.__importStar) || function (mod) {
    if (mod && mod.__esModule) return mod;
    var result = {};
    if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
    result["default"] = mod;
    return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
const core = __importStar(require("@actions/core"));
const exec = __importStar(require("@actions/exec"));
const tc = __importStar(require("@actions/tool-cache"));
const crypto = __importStar(require("crypto"));
const fs = __importStar(require("fs"));
const os = __importStar(require("os"));
const path = __importStar(require("path"));
const semver = __importStar(require("semver"));
// Translations between actions input and Julia arch names
const osMap = {
    'win32': 'winnt',
    'darwin': 'mac',
    'linux': 'linux'
};
const archMap = {
    'x86': 'i686',
    'x64': 'x86_64'
};
// Store information about the environment
const osPlat = os.platform(); // possible values: win32 (Windows), linux (Linux), darwin (macOS)
core.debug(`platform: ${osPlat}`);
/**
 * @returns The SHA256 checksum of a given file.
 */
function calculateChecksum(file) {
    return __awaiter(this, void 0, void 0, function* () {
        const hash = crypto.createHash('sha256');
        const input = fs.createReadStream(file);
        return new Promise((resolve, reject) => {
            input.on('data', (chunk) => {
                hash.update(chunk);
            });
            input.on('end', () => {
                const digest = hash.digest('hex');
                digest ? resolve(digest) : reject(new Error(`Could not calculate checksum of file ${file}: digest was empty.`));
            });
        });
    });
}
/**
 * @returns The content of the downloaded versions.json file as object.
 */
function getJuliaVersionInfo() {
    return __awaiter(this, void 0, void 0, function* () {
        const versionsFile = yield tc.downloadTool('https://julialang-s3.julialang.org/bin/versions.json');
        return JSON.parse(fs.readFileSync(versionsFile).toString());
    });
}
exports.getJuliaVersionInfo = getJuliaVersionInfo;
/**
 * @returns An array of all Julia versions available for download
 */
function getJuliaVersions(versionInfo) {
    return __awaiter(this, void 0, void 0, function* () {
        let versions = [];
        for (let version in versionInfo) {
            versions.push(version);
        }
        return versions;
    });
}
exports.getJuliaVersions = getJuliaVersions;
function getJuliaVersion(availableReleases, versionInput) {
    if (semver.valid(versionInput) == versionInput) {
        // versionInput is a valid version, use it directly
        return versionInput;
    }
    // nightlies
    if (versionInput == 'nightly') {
        return 'nightly';
    }
    // Use the highest available version that matches versionInput
    let version = semver.maxSatisfying(availableReleases, versionInput);
    if (version == null) {
        throw new Error(`Could not find a Julia version that matches ${versionInput}`);
    }
    // GitHub tags start with v, remove it
    version = version.replace(/^v/, '');
    return version;
}
exports.getJuliaVersion = getJuliaVersion;
function getNightlyFileName(arch) {
    let versionExt, ext;
    if (osPlat == 'win32') {
        versionExt = arch == 'x64' ? '-win64' : '-win32';
        ext = 'exe';
    }
    else if (osPlat == 'darwin') {
        if (arch == 'x86') {
            throw new Error('32-bit Julia is not available on macOS');
        }
        versionExt = '-mac64';
        ext = 'dmg';
    }
    else if (osPlat === 'linux') {
        versionExt = arch == 'x64' ? '-linux64' : '-linux32';
        ext = 'tar.gz';
    }
    else {
        throw new Error(`Platform ${osPlat} is not supported`);
    }
    return `julia-latest${versionExt}.${ext}`;
}
function getFileInfo(versionInfo, version, arch) {
    if (version == 'nightly') {
        return null;
    }
    for (let file of versionInfo[version].files) {
        if (file.os == osMap[osPlat] && file.arch == archMap[arch]) {
            return file;
        }
    }
    throw `Could not find ${archMap[arch]}/${version} binaries`;
}
exports.getFileInfo = getFileInfo;
function getDownloadURL(fileInfo, version, arch) {
    // nightlies
    if (version == 'nightly') {
        const baseURL = 'https://julialangnightlies-s3.julialang.org/bin';
        return `${baseURL}/${osMap[osPlat]}/${arch}/${getNightlyFileName(arch)}`;
    }
    return fileInfo.url;
}
exports.getDownloadURL = getDownloadURL;
function installJulia(versionInfo, version, arch) {
    return __awaiter(this, void 0, void 0, function* () {
        // Download Julia
        const fileInfo = getFileInfo(versionInfo, version, arch);
        const downloadURL = getDownloadURL(fileInfo, version, arch);
        core.debug(`downloading Julia from ${downloadURL}`);
        const juliaDownloadPath = yield tc.downloadTool(downloadURL);
        // Verify checksum
        if (version != 'nightly') {
            const checkSum = yield calculateChecksum(juliaDownloadPath);
            if (fileInfo.sha256 != checkSum) {
                throw new Error(`Checksum of downloaded file does not match the expected checksum from versions.json.\nExpected: ${fileInfo.sha256}\nGot: ${checkSum}`);
            }
            core.debug(`Checksum of downloaded file matches expected checksum: ${checkSum}`);
        }
        else {
            core.debug('Skipping checksum check for nightly binaries.');
        }
        const tempInstallDir = fs.mkdtempSync(`julia-${arch}-${version}-`);
        // Install it
        switch (osPlat) {
            case 'linux':
                // tc.extractTar doesn't support stripping components, so we have to call tar manually
                yield exec.exec('tar', ['xf', juliaDownloadPath, '--strip-components=1', '-C', tempInstallDir]);
                return tempInstallDir;
            case 'win32':
                if (version == 'nightly' || semver.gtr(version, '1.3', { includePrerelease: true })) {
                    // The installer changed in 1.4: https://github.com/JuliaLang/julia/blob/ef0c9108b12f3ae177c51037934351ffa703b0b5/NEWS.md#build-system-changes
                    yield exec.exec('powershell', ['-Command', `Start-Process -FilePath ${juliaDownloadPath} -ArgumentList "/SILENT /dir=${path.join(process.cwd(), tempInstallDir)}" -NoNewWindow -Wait`]);
                }
                else {
                    yield exec.exec('powershell', ['-Command', `Start-Process -FilePath ${juliaDownloadPath} -ArgumentList "/S /D=${path.join(process.cwd(), tempInstallDir)}" -NoNewWindow -Wait`]);
                }
                return tempInstallDir;
            case 'darwin':
                yield exec.exec('hdiutil', ['attach', juliaDownloadPath]);
                yield exec.exec('/bin/bash', ['-c', `cp -a /Volumes/Julia-*/Julia-*.app/Contents/Resources/julia ${tempInstallDir}`]);
                return path.join(tempInstallDir, 'julia');
            default:
                throw new Error(`Platform ${osPlat} is not supported`);
        }
    });
}
exports.installJulia = installJulia;