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

import * as finder from './find-python';

import * as finderPyPy from './find-pypy';

import * as finderGraalPy from './find-graalpy';

import * as path from 'path';

import * as os from 'os';

import fs from 'fs';

import {getCacheDistributor} from './cache-distributions/cache-factory';

import {

isCacheFeatureAvailable,

logWarning,

IS_MAC,

getVersionInputFromFile,

getVersionsInputFromPlainFile

} from './utils';

import {exec} from '@actions/exec';

function isPyPyVersion(versionSpec: string) {

return versionSpec.startsWith('pypy');

}

function isGraalPyVersion(versionSpec: string) {

return versionSpec.startsWith('graalpy');

}

async function installPipPackages(pipInstall: string) {

core.info(`Installing pip packages: ${pipInstall}`);

try {

const installArgs = pipInstall.trim().split(/\s+/);

await exec('python', ['-m', 'pip', 'install', ...installArgs]);

core.info('Successfully installed pip packages');

} catch (error) {

core.setFailed(

`Failed to install pip packages from "${pipInstall}". Please verify that the package names, versions, or requirements files provided are correct and installable, that the specified packages and versions can be resolved from PyPI or the configured package index, and that your network connection is stable and allows access to the package index.`

);

}

}

async function cacheDependencies(cache: string, pythonVersion: string) {

const cacheDependencyPath =

core.getInput('cache-dependency-path') || undefined;

const cacheDistributor = getCacheDistributor(

cache,

pythonVersion,

cacheDependencyPath

);

await cacheDistributor.restoreCache();

}

function resolveVersionInputFromDefaultFile(): string[] {

const couples: [string, (versionFile: string) => string[]][] = [

['.python-version', getVersionsInputFromPlainFile]

];

for (const [versionFile, _fn] of couples) {

logWarning(

`Neither 'python-version' nor 'python-version-file' inputs were supplied. Attempting to find '${versionFile}' file.`

);

if (fs.existsSync(versionFile)) {

return _fn(versionFile);

} else {

logWarning(`${versionFile} doesn't exist.`);

}

}

return [];

}

function resolveVersionInput() {

let versions = core.getMultilineInput('python-version');

const versionFile = core.getInput('python-version-file');

if (versions.length) {

if (versionFile) {

core.warning(

'Both python-version and python-version-file inputs are specified, only python-version will be used.'

);

}

} else {

if (versionFile) {

if (!fs.existsSync(versionFile)) {

throw new Error(

`The specified python version file at: ${versionFile} doesn't exist.`

);

}

versions = getVersionInputFromFile(versionFile);

} else {

versions = resolveVersionInputFromDefaultFile();

}

}

return versions;

}

async function run() {

if (IS_MAC) {

process.env['AGENT_TOOLSDIRECTORY'] = '/Users/runner/hostedtoolcache';

}

if (process.env.AGENT_TOOLSDIRECTORY?.trim()) {

process.env['RUNNER_TOOL_CACHE'] = process.env['AGENT_TOOLSDIRECTORY'];

}

core.debug(

`Python is expected to be installed into ${process.env['RUNNER_TOOL_CACHE']}`

);

try {

const versions = resolveVersionInput();

const checkLatest = core.getBooleanInput('check-latest');

const allowPreReleases = core.getBooleanInput('allow-prereleases');

const freethreaded = core.getBooleanInput('freethreaded');

if (versions.length) {

let pythonVersion = '';

const arch: string = core.getInput('architecture') || os.arch();

const updateEnvironment = core.getBooleanInput('update-environment');

core.startGroup('Installed versions');

for (const version of versions) {

if (isPyPyVersion(version)) {

const installed = await finderPyPy.findPyPyVersion(

version,

arch,

updateEnvironment,

checkLatest,

allowPreReleases

);

pythonVersion = `${installed.resolvedPyPyVersion}-${installed.resolvedPythonVersion}`;

core.info(

`Successfully set up PyPy ${installed.resolvedPyPyVersion} with Python (${installed.resolvedPythonVersion})`

);

} else if (isGraalPyVersion(version)) {

const installed = await finderGraalPy.findGraalPyVersion(

version,

arch,

updateEnvironment,

checkLatest,

allowPreReleases

);

pythonVersion = `${installed}`;

core.info(`Successfully set up GraalPy ${installed}`);

} else {

if (version.startsWith('2')) {

core.warning(

'The support for python 2.7 was removed on June 19, 2023. Related issue: https://github.com/actions/setup-python/issues/672'

);

}

const installed = await finder.useCpythonVersion(

version,

arch,

updateEnvironment,

checkLatest,

allowPreReleases,

freethreaded

);

pythonVersion = installed.version;

core.info(`Successfully set up ${installed.impl} (${pythonVersion})`);

}

}

core.endGroup();

const cache = core.getInput('cache');

if (cache && isCacheFeatureAvailable()) {

await cacheDependencies(cache, pythonVersion);

}

const pipInstall = core.getInput('pip-install');

if (pipInstall) {

await installPipPackages(pipInstall);

}

} else {

core.warning(

'The `python-version` input is not set. The version of Python currently in `PATH` will be used.'

);

}

const matchersPath = path.join(__dirname, '../..', '.github');

core.info(`##[add-matcher]${path.join(matchersPath, 'python.json')}`);

} catch (err) {

core.setFailed((err as Error).message);

}

}

run();