feat: Implement basic sccache action support

Signed-off-by: Xuanwo <github@xuanwo.io>

.gitattributes

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+# Ignore dist changes
+dist/index.js -diff

.github/dependabot.yml

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+version: 2
+updates:
+  - package-ecosystem: "npm"
+    directory: "/"
+    schedule:
+      interval: "monthly"

.github/workflows/test.yml

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+name: Test sccache
+
+on: [push, pull_request]
+
+jobs:
+  v0_3_3:
+    name: Test version 0.3.3
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os:
+          - ubuntu-latest
+          - windows-latest
+          - macos-lastest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Set Node.js 16.x
+        uses: actions/setup-node@v1
+        with:
+          node-version: 16.x
+
+      - name: npm install
+        run: npm install
+
+      - name: Run sccache-cache
+        uses: ./
+        with:
+          version: "v0.3.3"
+
+      - name: Run sccache stat for check
+        shell: bash
+        run: ${SCCACHE_PATH} --stat

.gitignore

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+node_modules/
+lib/

.prettierrc.json

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+{
+    "printWidth": 80,
+    "tabWidth": 2,
+    "useTabs": false,
+    "semi": true,
+    "singleQuote": true,
+    "trailingComma": "none",
+    "bracketSpacing": false,
+    "arrowParens": "avoid",
+    "parser": "typescript"
+}

action.yml

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+---
+name: "Sccache Action"
+description: "Setup sccache action"
+author: "mozilla"
+inputs:
+  version:
+    description: "The installed sccache version."
+    required: true
+runs:
+  using: "node16"
+  main: "dist/index.js"
+branding:
+  icon: "star"
+  color: "orange"

package.json

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+{
+  "name": "sccache-action",
+  "version": "0.0.1",
+  "description": "Github Action for Sccache",
+  "main": "dist/index.js",
+  "scripts": {
+    "tsc": "tsc",
+    "ncc": "ncc build lib/sccache.js",
+    "build": "prettier --write **/*.ts && tsc && ncc build lib/sccache.js",
+    "format": "prettier --write **/*.ts",
+    "format-check": "prettier --check **/*.ts",
+    "test": "jest"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/mozilla/sccache-action.git"
+  },
+  "keywords": [
+    "sccache"
+  ],
+  "author": "",
+  "license": "Apache-2.0",
+  "bugs": {
+    "url": "https://github.com/mozilla/sccache-action/issues"
+  },
+  "homepage": "https://github.com/mozilla/sccache-action#readme",
+  "dependencies": {
+    "@actions/core": "^1.10.0",
+    "@actions/io": "^1.1.2",
+    "@actions/tool-cache": "^2.0.1"
+  },
+  "devDependencies": {
+    "@types/jest": "^27.4.1",
+    "@types/node": "^18.11.18",
+    "@vercel/ncc": "^0.36.0",
+    "jest": "^27.5.1",
+    "jest-circus": "^29.3.1",
+    "prettier": "^2.8.1",
+    "ts-jest": "^27.1.4",
+    "typescript": "^4.9.4"
+  }
+}

src/sccache.ts

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+import * as core from '@actions/core';
+import {downloadTool, extractTar, cacheDir} from '@actions/tool-cache';
+import {exec} from 'child_process';
+import * as fs from 'fs';
+import {promisify} from 'util';
+
+async function setup() {
+  // TODO:  we can support install latest version by default if version
+  // is not input.
+  const version = core.getInput('version');
+  console.log('try to setup for version: ', version);
+
+  const downloadUrl = `https://github.com/mozilla/sccache/releases/download/${version}/${getFilename}`;
+  console.log('try to setup from url: ', downloadUrl);
+
+  // Download and extract.
+  const sccachePackage = await downloadTool(downloadUrl);
+  const sccachePath = (await extractTar(sccachePackage)) + `/sccache`;
+
+  // Cache sccache.
+  const sccacheHome = await cacheDir(sccachePath, 'sccache', version);
+  // Add cached sccache into path.
+  core.addPath(`${sccacheHome}`);
+  // Expose the sccache path as env.
+  core.exportVariable('SCCACHE_PATH', `${sccacheHome}/sccache`);
+}
+
+function getFilename(version: string): Error | string {
+  return `sccache-${version}-${getArch()}-${getPlatform()}.${getExtension()}`;
+}
+
+function getArch(): Error | string {
+  switch (process.arch) {
+    case 'x64':
+      return 'x86_64';
+    case 'arm64':
+      return 'aarch64';
+    default:
+      return Error('not supported arch');
+  }
+}
+
+function getPlatform(): Error | string {
+  switch (process.platform) {
+    case 'darwin':
+      return 'apple-darwin';
+    case 'win32':
+      return 'pc-windows-msvc';
+    case 'linux':
+      return 'unknown-linux-musl';
+    default:
+      return Error('not supported platform');
+  }
+}
+
+function getExtension(): string {
+  switch (process.platform) {
+    case 'win32':
+      return 'zip';
+    default:
+      return 'tar.gz';
+  }
+}
+
+setup().catch(err => {
+  core.error(err);
+  core.setFailed(err.message);
+});

tsconfig.json

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+{
+    "compilerOptions": {
+        "target": "es6",
+        "module": "commonjs",
+        "outDir": "./lib",
+        "rootDir": "./src",
+        "strict": true,
+        "esModuleInterop": true
+    },
+    "exclude": [
+        "node_modules",
+        "**/*.test.ts"
+    ]
+}