name: Check SPDX-License-Identifier

on:
  push:
    branches:
      - master
      - develop
  pull_request:

jobs:
  check-spdx-license-id:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4.1.1
      - name: Check
        run: |
          counter=0

          search() {
            local directory="$1"
            find "$directory" -type f \
              '(' \
                -name "*.cjs" -and -not -name '*.config.cjs' -o \
                -name "*.html" -o \
                -name "*.js" -and -not -name '*.config.js' -o \
                -name "*.mjs" -and -not -name '*.config.mjs' -o \
                -name "*.scss" -o \
                -name "*.ts" -and -not -name '*.config.ts' -o \
                -name "*.vue" \
              ')' -and \
              -not -name '*eslint*'
          }

          check() {
            local file="$1"
            if ! (
              grep -q "SPDX-FileCopyrightText: syuilo and misskey-project" "$file" ||
              grep -q "SPDX-License-Identifier: AGPL-3.0-only" "$file"
            ); then
              echo "Missing: $file"
              ((counter++))
            fi
          }

          directories=(
            "cypress/e2e"
            "packages/backend/migration"
            "packages/backend/src"
            "packages/backend/test"
            "packages/frontend/.storybook"
            "packages/frontend/@types"
            "packages/frontend/lib"
            "packages/frontend/public"
            "packages/frontend/src"
            "packages/frontend/test"
            "packages/misskey-bubble-game/src"
            "packages/misskey-reversi/src"
            "packages/sw/src"
            "scripts"
          )

          for directory in "${directories[@]}"; do
            for file in $(search $directory); do
              check "$file"
            done
          done

          if [ $counter -gt 0 ]; then
            echo "SPDX-License-Identifier is missing in $counter files."
            exit 1
          else
            echo "SPDX-License-Identifier is certainly described in all target files!"
            exit 0
          fi