name: Auto Label Issues

on:
  issues:
    types:
      - opened
      - edited

permissions: {}

concurrency:
  group: ${{ github.workflow }}-${{ github.event.issue.number }}
  cancel-in-progress: true

jobs:
  auto-label:
    name: Auto Label Issues
    if: ${{ github.event.issue.body && contains(github.event.issue.body, '### Plugin') && contains(github.event.issue.labels.*.name, 'bug') }}
    runs-on: ubuntu-latest
    permissions:
      contents: read
      issues: write
    env:
      ISSUE_BODY: ${{ github.event.issue.body }}

    steps:
      - name: Checkout Repository
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          persist-credentials: false

      - name: Extract Severity From Issue Body
        id: extract-severity
        run: |
          USER_SELECTED_SEVERITY=$(printf '%s\n' "$ISSUE_BODY" | grep "### Severity" -A 2 | tail -n 1 | sed 's/[[:space:]]*$//')
          SELECTED_SEVERITY=""

          case "$USER_SELECTED_SEVERITY" in
              "Wrong Formatting"|"Wrong Content"|"Missing Chapter"|"Missing Images"|"Can't Load Novels"|"Domain Changed")
                  SELECTED_SEVERITY="$USER_SELECTED_SEVERITY"
                  ;;
              *)
                  SELECTED_SEVERITY="Other"
                  ;;
          esac
          echo "SELECTED_SEVERITY=$SELECTED_SEVERITY" >> "$GITHUB_ENV"

      - name: Extract Plugin From Issue Body
        id: parse-issue
        run: |
          SELECTED_PLUGIN=$(printf '%s\n' "$ISSUE_BODY" | awk '/### Plugin/ {f=1; next} f && NF {print; exit}' | sed 's/^[[:space:]]*//;s/[[:space:]]*$//')

          echo "SELECTED_PLUGIN=$SELECTED_PLUGIN" >> "$GITHUB_ENV"

      - name: Extract Language From Issue Body
        id: extract-language
        run: |
          SELECTED_LANGUAGE=$(printf '%s\n' "$ISSUE_BODY" | awk '/### Language/ {f=1; next} f && NF {print; exit}' | sed 's/^[[:space:]]*//;s/[[:space:]]*$//')

          echo "SELECTED_LANGUAGE=$SELECTED_LANGUAGE" >> "$GITHUB_ENV"

      - name: Determine Corresponding Label
        id: determine-label
        run: |
          LABELS="$(jq --arg keys "$SELECTED_PLUGIN" '. as $data | $keys | split(", ") as $keyList | $keyList[] | . as $key | if $data[$key] != null then "\($key)[\($data[$key])]" else empty end' ./.github/scripts/keys.json | sed 's/"//g' | sed 's/^[^:]*: //')"

          LABELS="$(printf '%s' "$LABELS" | node -e "process.stdin.on('data', data => process.stdout.write(data.toString().toLowerCase()))")"

          # Add "plugin: " in front of each label
          LABELS_WITH_PREFIX="$(echo "$LABELS" | sed 's/^/plugin: /')"

          FINAL_LABELS="$LABELS_WITH_PREFIX"

          if [ -n "$SELECTED_LANGUAGE" ]; then
            LOWERCASE_LANGUAGE="$(printf '%s' "$SELECTED_LANGUAGE" | node -e "process.stdin.on('data', data => process.stdout.write(data.toString().toLowerCase()))")"
            FINAL_LABELS="${FINAL_LABELS}"$'\n'"language: $LOWERCASE_LANGUAGE"
          fi

          # Save to GitHub environment
          printf "LABELS<<EOF\n%s\nEOF\n" "$FINAL_LABELS" >> "$GITHUB_ENV"

      - name: Add Labels To Issue
        if: env.LABELS != ''
        env:
          GH_TOKEN: ${{ github.token }}
          ISSUE_NUMBER: ${{ github.event.issue.number }}
          REPOSITORY: ${{ github.repository }}
        run: |
          jq -n \
            --arg severity "$(printf '%s' "$SELECTED_SEVERITY" | node -e "process.stdin.on('data', data => process.stdout.write(data.toString().toLowerCase()))")" \
            --arg labels "$LABELS" \
            '{labels: (["severity: " + $severity] + ($labels | split("\n") | map(select(length > 0))))}' \
            | gh api --method POST "repos/$REPOSITORY/issues/$ISSUE_NUMBER/labels" --input -

      - name: Handle Missing Label
        if: env.LABELS == ''
        run: echo "No matching label found for the selected plugin."