name: Release Notes Template

on:
  workflow_call:
    inputs:
      previous_release:
        description: 'Previous release tag'
        required: true
        type: string
      current_release:
        description: 'Current release tag'
        required: true
        type: string
      gitea_url:
        description: 'Gitea URL'
        required: false
        type: string
        default: 'https://gitea.technarts.com'
      repo_owner:
        description: 'Repository owner'
        required: true
        type: string
      repo_name:
        description: 'Repository name'
        required: true
        type: string
      update_release:
        description: 'Update release description'
        required: false
        type: boolean
        default: false
      release_id:
        description: 'Release ID to update'
        required: false
        type: string
        default: ''
    secrets:
      gitea_token:
        description: 'Gitea API token'
        required: true

jobs:
  generate-and-update:
    runs-on: ubuntu-latest
    
    steps:
      - name: Generate and update release notes
        env:
          GITEA_TOKEN: ${{ secrets.gitea_token }}
          GITEA_URL: ${{ inputs.gitea_url }}
          REPO_OWNER: ${{ inputs.repo_owner }}
          REPO_NAME: ${{ inputs.repo_name }}
          PREVIOUS_RELEASE: ${{ inputs.previous_release }}
          CURRENT_RELEASE: ${{ inputs.current_release }}
          UPDATE_RELEASE: ${{ inputs.update_release }}
          RELEASE_ID: ${{ inputs.release_id }}
        run: |
          echo "Generating release notes: $PREVIOUS_RELEASE -> $CURRENT_RELEASE"
          echo "Repository: $REPO_OWNER/$REPO_NAME"
          
          # Get releases
          RELEASES=$(curl -s -H "Authorization: token $GITEA_TOKEN" \
            "$GITEA_URL/api/v1/repos/$REPO_OWNER/$REPO_NAME/releases")
          
          # Get release dates
          PREVIOUS_DATE=$(echo "$RELEASES" | jq -r --arg tag "$PREVIOUS_RELEASE" \
            '.[] | select(.tag_name == $tag) | .created_at')
          
          CURRENT_DATE=$(echo "$RELEASES" | jq -r --arg tag "$CURRENT_RELEASE" \
            '.[] | select(.tag_name == $tag) | .created_at')
          
          if [ -z "$PREVIOUS_DATE" ] || [ "$PREVIOUS_DATE" = "null" ]; then
            echo "ERROR: Release not found: $PREVIOUS_RELEASE"
            exit 1
          fi
          
          if [ -z "$CURRENT_DATE" ] || [ "$CURRENT_DATE" = "null" ]; then
            echo "ERROR: Release not found: $CURRENT_RELEASE"
            exit 1
          fi
          
          echo "Date range: $PREVIOUS_DATE to $CURRENT_DATE"
          
          # Get merged PRs
          PRS=$(curl -s -H "Authorization: token $GITEA_TOKEN" \
            "$GITEA_URL/api/v1/repos/$REPO_OWNER/$REPO_NAME/pulls?state=closed&limit=200")
          
          # Build release notes
          NOTES_HEADER="# Release Notes: $CURRENT_RELEASE"$'\n\n'"## Changes"$'\n\n'
          
          # Filter and format PRs
          PR_LIST=$(echo "$PRS" | jq -r --arg prev_date "$PREVIOUS_DATE" --arg curr_date "$CURRENT_DATE" '
            [.[] | select(.merged == true and .merged_at > $prev_date and .merged_at <= $curr_date)] |
            sort_by(.merged_at) |
            reverse |
            .[] |
            "* **\(.title)** ([#\(.number)](\(.html_url)))\n  Author: @\(.user.username)\n  Merged: \(.merged_at | split("T")[0])\n"
          ')
          
          # Count PRs
          PR_COUNT=$(echo "$PRS" | jq --arg prev_date "$PREVIOUS_DATE" --arg curr_date "$CURRENT_DATE" \
            '[.[] | select(.merged == true and .merged_at > $prev_date and .merged_at <= $curr_date)] | length')
          
          NOTES_FOOTER=$'\n\n'"---"$'\n\n'"**Total changes:** $PR_COUNT pull requests merged"
          
          FULL_NOTES="${NOTES_HEADER}${PR_LIST}${NOTES_FOOTER}"
          
          echo "Release notes generated: $PR_COUNT PRs found"
          echo "======================================"
          echo "$FULL_NOTES"
          echo "======================================"
          
          # Update release if requested
          if [ "$UPDATE_RELEASE" = "true" ] && [ -n "$RELEASE_ID" ]; then
            echo "Updating release description..."
            
            NOTES_JSON=$(echo "$FULL_NOTES" | jq -Rs .)
            
            curl -X PATCH \
              -H "Authorization: token $GITEA_TOKEN" \
              -H "Content-Type: application/json" \
              "$GITEA_URL/api/v1/repos/$REPO_OWNER/$REPO_NAME/releases/$RELEASE_ID" \
              -d "{\"body\":$NOTES_JSON}"
            
            echo "Release description updated successfully!"
          else
            echo "Skipping release update"
          fi