Initial commit

.eslintignore

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+dist/
+lib/
+node_modules/

.eslintrc.json

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+{
+    "plugins": ["jest", "@typescript-eslint"],
+    "extends": ["plugin:github/es6"],
+    "parser": "@typescript-eslint/parser",
+    "parserOptions": {
+      "ecmaVersion": 9,
+      "sourceType": "module",
+      "project": "./tsconfig.json"
+    },
+    "rules": {
+      "eslint-comments/no-use": "off",
+      "import/no-namespace": "off",
+      "no-unused-vars": "off",
+      "@typescript-eslint/no-unused-vars": "error",
+      "@typescript-eslint/explicit-member-accessibility": ["error", {"accessibility": "no-public"}],
+      "@typescript-eslint/no-require-imports": "error",
+      "@typescript-eslint/array-type": "error",
+      "@typescript-eslint/await-thenable": "error",
+      "@typescript-eslint/ban-ts-ignore": "error",
+      "camelcase": "off",
+      // "@typescript-eslint/camelcase": "error",
+      "@typescript-eslint/class-name-casing": "error",
+      "@typescript-eslint/explicit-function-return-type": ["error", {"allowExpressions": true}],
+      "@typescript-eslint/func-call-spacing": ["error", "never"],
+      "@typescript-eslint/generic-type-naming": ["error", "^[A-Z][A-Za-z]*$"],
+      "@typescript-eslint/no-array-constructor": "error",
+      "@typescript-eslint/no-empty-interface": "error",
+      "@typescript-eslint/no-explicit-any": "error",
+      "@typescript-eslint/no-extraneous-class": "error",
+      "@typescript-eslint/no-for-in-array": "error",
+      "@typescript-eslint/no-inferrable-types": "error",
+      "@typescript-eslint/no-misused-new": "error",
+      "@typescript-eslint/no-namespace": "error",
+      "@typescript-eslint/no-non-null-assertion": "warn",
+      "@typescript-eslint/no-object-literal-type-assertion": "error",
+      "@typescript-eslint/no-unnecessary-qualifier": "error",
+      "@typescript-eslint/no-unnecessary-type-assertion": "error",
+      "@typescript-eslint/no-useless-constructor": "error",
+      "@typescript-eslint/no-var-requires": "error",
+      "@typescript-eslint/prefer-for-of": "warn",
+      "@typescript-eslint/prefer-function-type": "warn",
+      "@typescript-eslint/prefer-includes": "error",
+      "@typescript-eslint/prefer-interface": "error",
+      "@typescript-eslint/prefer-string-starts-ends-with": "error",
+      "@typescript-eslint/promise-function-async": "error",
+      "@typescript-eslint/require-array-sort-compare": "error",
+      "@typescript-eslint/restrict-plus-operands": "error",
+      "semi": "off",
+      "github/array-foreach": "off",
+      // "@typescript-eslint/semi": ["error", "never"],
+      "@typescript-eslint/type-annotation-spacing": "error",
+      "@typescript-eslint/unbound-method": "error"
+    },
+    "env": {
+      "node": true,
+      "es6": true,
+      "jest/globals": true
+    }
+  }

.github/workflows/test.yml

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+name: "build-test"
+on: # rebuild any PRs and main branch changes
+  pull_request:
+  push:
+    branches:
+      - master
+      - 'releases/*'
+
+jobs:
+  build: # make sure build/ci work properly
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - run: |
+        npm install
+        npm run all
+
+  test: # make sure the action works on a clean machine without building
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: ./

.gitignore

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+# Dependency directory
+node_modules
+
+# Rest pulled from https://github.com/github/gitignore/blob/master/Node.gitignore
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+jspm_packages/
+
+# TypeScript v1 declaration files
+typings/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+.env.test
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+
+# next.js build output
+.next
+
+# nuxt.js build output
+.nuxt
+
+# vuepress build output
+.vuepress/dist
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/
+
+# OS metadata
+.DS_Store
+Thumbs.db
+
+# Ignore built ts files
+__tests__/runner/*
+lib/**/*

.prettierignore

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+dist/
+lib/
+node_modules/

.prettierrc.json

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+{
+    "printWidth": 100,
+    "tabWidth": 2,
+    "useTabs": false,
+    "semi": true,
+    "singleQuote": true,
+    "trailingComma": "none",
+    "bracketSpacing": true,
+    "arrowParens": "avoid",
+    "parser": "typescript"
+  }

.vscode/settings.json

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+{
+    "typescript.tsdk": "node_modules/typescript/lib"
+}

LICENSE

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+
+The MIT License (MIT)
+
+Copyright (c) 2018 GitHub, Inc. and contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

README.md

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+# ArgoCD Diff GitHub Action
+
+This action generates a diff between the current PR and the current state of the cluster. 
+
+Note that this includes any changes between your branch and latest `master`, as well as ways in which the cluster is out of sync. 
+
+## Usage
+
+Example GH action:
+```yaml
+name: ArgoCD Diff
+
+on:
+  pull_request:
+    branches: [master, main]
+
+jobs:
+  argocd-diff:
+    name: Generate ArgoCD Diff
+    runs-on: ubuntu-latest
+    steps:
+
+      - name: Checkout repo
+        uses: actions/checkout@v2
+
+      - uses: quizlet/argocd-diff-action@master
+        name: ArgoCD Diff
+        with:
+          argocd-server-url: argocd.example.com
+          argocd-token: ${{ secrets.ARGOCD_TOKEN }}
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          argocd-version: v1.6.1
+          argocd-extra-cli-args: --grpc-web
+```
+
+## How it works
+
+1. Downloads the specified version of the ArgoCD binary, and makes it executable
+2. Connects to the ArgoCD API using the `argocd-token`, and gets all the apps
+3. Filters the apps to the ones that live in the current repo
+4. Runs `argocd app diff` for each app
+5. Posts the diff output as a comment on the PR
+
+## Publishing
+
+Build the script and commit to your branch:
+`npm run build && npm run pack`
+Commit the build output, and make a PR.

__tests__/main.test.ts

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+import * as process from 'process';
+import * as cp from 'child_process';
+import * as path from 'path';
+
+// shows how the runner will run a javascript action with env / stdout protocol
+test('test runs', () => {
+  process.env['ARCH'] = 'darwin';
+  process.env['GITHUB_REPOSITORY'] = 'quizlet/cd-infra';
+  process.env['INPUT_GITHUB-TOKEN'] = '500';
+  process.env['INPUT_ARGOCD-VERSION'] = 'v1.6.1';
+  process.env['INPUT_ARGOCD-SERVER-URL'] = 'argocd.qzlt.io';
+  process.env['INPUT_ARGOCD-TOKEN'] = 'foo';
+  const ip = path.join(__dirname, '..', 'lib', 'main.js');
+  const options: cp.ExecSyncOptions = {
+    env: process.env
+  };
+  console.log(cp.execSync(`node ${ip}`, options).toString());
+});
+
+afterAll(() => {
+  cp.execSync('rm -rf bin');
+});

action.yml

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+name: 'ArgoCD Diff'
+description: 'Diffs all ArgoCD apps in the repo, and provides the diff as a PR comment'
+author: 'Quizlet'
+inputs:
+  argocd-server-url: 
+    description: ArgoCD server url (without the protocol)
+    required: true
+  argocd-token: 
+    description: ArgoCD token for a local or project-scoped user https://argoproj.github.io/argo-cd/operator-manual/user-management/#local-usersaccounts-v15
+    required: true
+  argocd-version: 
+    description: ArgoCD Version
+    default: v1.6.1
+    required: false
+  github-token: 
+    description: Github Token
+    required: true
+  argocd-extra-cli-args: 
+    description: Extra arguments to pass to the argocd CLI
+    default: --grpc-web
+    required: false
+runs:
+  using: 'node12'
+  main: 'dist/index.js'