name: Invidious CI

on: [push, pull_request]

jobs:
  build:
    
    runs-on: ubuntu-latest
    
    steps:
      - uses: actions/checkout@v2
      
      - name: Install Crystal
        uses: oprypin/install-crystal@v1.2.4
      
      # - name: Cache dependencies
      #   uses: actions/cache@v2
      #   with:
      #     path: ./lib
      #     key: shards-${{ hashFiles('shard.lock') }} # shard.lock isn't tracked atm
      
      # Docs at https://crystal-lang.org/reference/the_shards_command
      #
      # `shards install`
      #
      # Resolves and installs dependencies into the lib folder. If not already present, generates a shard.lock
      # file from resolved dependencies, locking version numbers or Git commits.
      # Reads and enforces locked versions and commits if a shard.lock file is present. The install command may
      # fail if a locked version doesn't match a requirement, but may succeed if a new dependency was added, as
      # long as it doesn't generate a conflict, thus generating a new shard.lock file.
      #
      # `shards update`
      #
      # Resolves and updates all dependencies into the lib folder again, whatever the locked versions and
      # commits in the shard.lock file. Eventually generates a new shard.lock file.
      #
      # --------------------------------------------------------------------------------
      #
      # running either `shards install` or `shards update` without a `shard.lock` file does the same thing,
      # downloading shards into the `lib` folder and writing a `shard.lock` file
      #
      # if there is a `shard.lock` file `shards install` installs the versions from the lock file while
      # `shards update` does a `shards install` that pretends there isn't a lock file present
      - name: Update and install shards
        run: shards update
      
      - name: Run tests
        run: crystal spec
      
      - name: Run lint
        run: |
          if ! crystal tool format --check; then
            crystal tool format
            git diff
            exit 1
          fi
      
      - name: Build
        run: crystal build --warnings all --error-on-warnings --error-trace src/invidious.cr
      
  build-docker:
    
    runs-on: ubuntu-latest
    
    steps:
      - uses: actions/checkout@v2
      
      - name: Build Docker
        run: docker-compose up -d
      
      - name: Test Docker
        run: while curl -Isf http://localhost:3000; do sleep 1; done