name: "Release - Package Splitter"
run-name: ${{ github.workflow }} - ${{ github.ref_name }}

on:
    push:
        branches:
            - main
    workflow_dispatch:
        inputs:
            force_all:
                description: "Force split/push of all template repos, even if no changes detected"
                required: false
                type: boolean
                default: false
    # IMPORTANT: workflows below must match the upstream workflow's `name:` exactly
    workflow_run:
        workflows:
            - Release - HugoBlox Modules
        types:
            - completed

env:
    GITHUB_TOKEN: ${{ secrets.ACCESS_TOKEN }}

jobs:
    determine_changed:
        runs-on: ubuntu-latest
        outputs:
            matrix: ${{ steps.set-matrix.outputs.matrix }}
            has_changes: ${{ steps.set-matrix.outputs.has_changes }}

        steps:
            - uses: actions/checkout@v6
              with:
                  fetch-depth: 0

            - id: changed
              # Only run change detection for push events
              if: ${{ github.event_name == 'push' }}
              uses: tj-actions/changed-files@v47
              with:
                  files: |
                      templates/**
                      templates/*/.github/**
                  dir_names: true
                  dir_names_max_depth: 2
                  dir_names_exclude_current_dir: true

            # Build dynamic matrix
            - name: Build dynamic matrix
              id: set-matrix
              env:
                  CHANGED_DIRS: ${{ steps.changed.outputs.dir_names || '' }}
                  FORCE_ALL: ${{ github.event.inputs.force_all || 'false' }}
              run: |
                  # Define the full mapping
                  declare -A STARTER_MAP=(
                    ["templates/academic-cv"]="hugo-theme-academic-cv"
                    ["templates/resume"]="hugo-theme-resume"
                    ["templates/data-science-blog"]="hugo-theme-data-science-blog"
                    ["templates/documentation"]="hugo-theme-documentation"
                    ["templates/link-in-bio"]="hugo-theme-link-in-bio"
                    ["templates/saas-landing-page"]="hugo-theme-saas-landing-page"
                    ["templates/dev-portfolio"]="hugo-theme-developer-portfolio"
                    ["templates/markdown-slides"]="hugo-theme-markdown-slides"
                    ["templates/starter"]="hugo-starter"
                  )

                  build_full_matrix() {
                    local JSON="[" FIRST=true
                    local ROOTS=()

                    # Sort keys to keep output stable across runs
                    readarray -t ROOTS < <(printf "%s\n" "${!STARTER_MAP[@]}" | sort)

                    for ROOT in "${ROOTS[@]}"; do
                      if [ "$FIRST" = true ]; then
                        FIRST=false
                      else
                        JSON+=","
                      fi
                      JSON+="{\"local_path\":\"$ROOT\",\"split_repository\":\"${STARTER_MAP[$ROOT]}\"}"
                    done

                    JSON+="]"
                    echo "$JSON"
                  }

                  # Manual override to force splitting all templates
                  if [ "$FORCE_ALL" = "true" ]; then
                    echo "Force mode enabled; splitting all templates"
                    FULL_MATRIX=$(build_full_matrix)
                    echo "matrix=$FULL_MATRIX" >> "$GITHUB_OUTPUT"
                    echo "has_changes=true" >> "$GITHUB_OUTPUT"
                    exit 0
                  fi

                  # For non-push events, always use full matrix derived from the map above
                  if [ "${{ github.event_name }}" != "push" ]; then
                    echo "Using full matrix for ${{ github.event_name }} event"
                    FULL_MATRIX=$(build_full_matrix)
                    echo "matrix=$FULL_MATRIX" >> "$GITHUB_OUTPUT"
                    echo "has_changes=true" >> "$GITHUB_OUTPUT"
                    exit 0
                  fi

                  echo "Detected template directories: $CHANGED_DIRS"

                  # If no changes, set empty matrix
                  if [ -z "$CHANGED_DIRS" ]; then
                    echo "No templates changed"
                    echo "matrix=[]" >> "$GITHUB_OUTPUT"
                    echo "has_changes=false" >> "$GITHUB_OUTPUT"
                    exit 0
                  fi

                  # Build JSON array for changed templates
                  JSON="["
                  FIRST=true
                  # tj-actions outputs space-separated list
                  for DIR in $CHANGED_DIRS; do
                    # Normalize potential trailing slash
                    DIR="${DIR%/}"

                    # Collapse to the template root (first two path segments), e.g. templates/landing-page
                    IFS='/' read -r SEG1 SEG2 _ <<< "$DIR"
                    if [[ -n "$SEG1" && -n "$SEG2" ]]; then
                      ROOT="$SEG1/$SEG2"
                    else
                      ROOT="$DIR"
                    fi

                    # Only process if it's a known starter
                    if [[ -n "${STARTER_MAP[$ROOT]}" ]]; then
                      if [ "$FIRST" = true ]; then
                        FIRST=false
                      else
                        JSON+=","
                      fi
                      JSON+="{\"local_path\":\"$ROOT\",\"split_repository\":\"${STARTER_MAP[$ROOT]}\"}"
                    fi
                  done
                  JSON+="]"

                  # Check if we actually added any starters
                  if [ "$JSON" = "[]" ]; then
                    echo "No valid starters found in changed directories"
                    echo "matrix=[]" >> "$GITHUB_OUTPUT"
                    echo "has_changes=false" >> "$GITHUB_OUTPUT"
                  else
                    echo "matrix=$JSON" >> "$GITHUB_OUTPUT"
                    echo "has_changes=true" >> "$GITHUB_OUTPUT"
                  fi

    packages_split:
        needs: determine_changed
        # Run when:
        #  • Event is not workflow_run OR upstream workflow succeeded.
        #  • Event is not push OR at least one starter changed.
        if: ${{ (github.event_name != 'workflow_run' || github.event.workflow_run.conclusion == 'success') && needs.determine_changed.outputs.has_changes == 'true' }}

        runs-on: ubuntu-latest

        strategy:
            fail-fast: false
            matrix:
                package: ${{ fromJson(needs.determine_changed.outputs.matrix) }}

        steps:
            - uses: actions/checkout@v6
              with:
                  fetch-depth: 0

            # step if no tag is pushed
            - if: ${{ !startsWith(github.ref, 'refs/tags/') }}
              uses: "symplify/monorepo-split-github-action@v2.4.4"
              with:
                  package_directory: "${{ matrix.package.local_path }}"
                  repository_organization: "HugoBlox"
                  repository_name: "${{ matrix.package.split_repository }}"
                  user_name: "Splitter Bot"
                  user_email: "no.reply@hugoblox.com"