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import * as path from 'path';

import * as core from '@actions/core';

import * as tc from '@actions/tool-cache';

import * as exec from '@actions/exec';

import * as httpm from '@actions/http-client';

import {ExecOptions} from '@actions/exec/lib/interfaces';

import {IS_WINDOWS, IS_LINUX, getDownloadFileName} from './utils';

import {IToolRelease} from '@actions/tool-cache';

const TOKEN = core.getInput('token');

const AUTH = !TOKEN ? undefined : `token ${TOKEN}`;

const MANIFEST_REPO_OWNER = 'actions';

const MANIFEST_REPO_NAME = 'python-versions';

const MANIFEST_REPO_BRANCH = 'main';

export const MANIFEST_URL = `https://raw.githubusercontent.com/${MANIFEST_REPO_OWNER}/${MANIFEST_REPO_NAME}/${MANIFEST_REPO_BRANCH}/versions-manifest.json`;

export async function findReleaseFromManifest(

semanticVersionSpec: string,

architecture: string,

manifest: tc.IToolRelease[] | null

): Promise<tc.IToolRelease | undefined> {

if (!manifest) {

manifest = await getManifest();

}

const foundRelease = await tc.findFromManifest(

semanticVersionSpec,

false,

manifest,

architecture

);

return foundRelease;

}

function isIToolRelease(obj: any): obj is IToolRelease {

return (

typeof obj === 'object' &&

obj !== null &&

typeof obj.version === 'string' &&

typeof obj.stable === 'boolean' &&

Array.isArray(obj.files) &&

obj.files.every(

(file: any) =>

typeof file.filename === 'string' &&

typeof file.platform === 'string' &&

typeof file.arch === 'string' &&

typeof file.download_url === 'string'

)

);

}

export async function getManifest(): Promise<tc.IToolRelease[]> {

try {

const repoManifest = await getManifestFromRepo();

if (

Array.isArray(repoManifest) &&

repoManifest.length &&

repoManifest.every(isIToolRelease)

) {

return repoManifest;

}

throw new Error(

'The repository manifest is invalid or does not include any valid tool release (IToolRelease) entries.'

);

} catch (err) {

core.debug('Fetching the manifest via the API failed.');

if (err instanceof Error) {

core.debug(err.message);

} else {

core.error('An unexpected error occurred while fetching the manifest.');

}

}

return await getManifestFromURL();

}

export function getManifestFromRepo(): Promise<tc.IToolRelease[]> {

core.debug(

`Getting manifest from ${MANIFEST_REPO_OWNER}/${MANIFEST_REPO_NAME}@${MANIFEST_REPO_BRANCH}`

);

return tc.getManifestFromRepo(

MANIFEST_REPO_OWNER,

MANIFEST_REPO_NAME,

AUTH,

MANIFEST_REPO_BRANCH

);

}

export async function getManifestFromURL(): Promise<tc.IToolRelease[]> {

core.debug('Falling back to fetching the manifest using raw URL.');

const http: httpm.HttpClient = new httpm.HttpClient('tool-cache');

const response = await http.getJson<tc.IToolRelease[]>(MANIFEST_URL);

if (!response.result) {

throw new Error(`Unable to get manifest from ${MANIFEST_URL}`);

}

return response.result;

}

async function installPython(workingDirectory: string) {

const options: ExecOptions = {

cwd: workingDirectory,

env: {

...process.env,

...(IS_LINUX && {LD_LIBRARY_PATH: path.join(workingDirectory, 'lib')})

},

silent: true,

listeners: {

stdout: (data: Buffer) => {

core.info(data.toString().trim());

},

stderr: (data: Buffer) => {

core.error(data.toString().trim());

}

}

};

if (IS_WINDOWS) {

await exec.exec('powershell', ['./setup.ps1'], options);

} else {

await exec.exec('bash', ['./setup.sh'], options);

}

}

export async function installCpythonFromRelease(release: tc.IToolRelease) {

if (!release.files || release.files.length === 0) {

throw new Error('No files found in the release to download.');

}

const downloadUrl = release.files[0].download_url;

core.info(`Download from "${downloadUrl}"`);

let pythonPath = '';

try {

const fileName = getDownloadFileName(downloadUrl);

pythonPath = await tc.downloadTool(downloadUrl, fileName, AUTH);

core.info('Extract downloaded archive');

let pythonExtractedFolder;

if (IS_WINDOWS) {

pythonExtractedFolder = await tc.extractZip(pythonPath);

} else {

pythonExtractedFolder = await tc.extractTar(pythonPath);

}

core.info('Execute installation script');

await installPython(pythonExtractedFolder);

} catch (err) {

if (err instanceof tc.HTTPError) {

// Rate limit?

if (err.httpStatusCode === 403) {

core.error(

`Received HTTP status code 403. This indicates a permission issue or restricted access.`

);

} else if (err.httpStatusCode === 429) {

core.info(

`Received HTTP status code 429. This usually indicates the rate limit has been exceeded`

);

} else {

core.info(err.message);

}

if (err.stack) {

core.debug(err.stack);

}

}

throw err;

}

}