# Forge-Auto-Announce
# Triggers on tag push (v*). Reads .gitea/forge-posts/v<X.Y.Z>.md from the
# *tagged tree* (not main), assembles a Discord embed, posts via webhook.
#
# Required repo secret: FORGE_DISCORD_WEBHOOK_URL
# Optional repo secret: FORGE_DISCORD_THREAD_ID (post into a forum thread)
#
# Char-cap reminder: Discord embed total (title + description + footer +
# field values combined) ~5500. Keep .gitea/forge-posts/v*.md trim.

name: Forge Auto-Announce

on:
  push:
    tags:
      - 'v*'

jobs:
  announce:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout tagged tree
        uses: actions/checkout@v4
        with:
          ref: ${{ github.ref }}

      - name: Compose embed
        id: embed
        env:
          TAG: ${{ github.ref_name }}
        run: |
          POST_FILE=".gitea/forge-posts/${TAG}.md"
          if [ ! -f "$POST_FILE" ]; then
            echo "No forge-post file for ${TAG} (looked at ${POST_FILE}). Skipping."
            echo "skip=true" >> "$GITHUB_OUTPUT"
            exit 0
          fi

          TITLE=$(awk -F': ' '/^title:/ {print $2; exit}' "$POST_FILE" | sed 's/^"//;s/"$//')
          SUBTITLE=$(awk -F': ' '/^subtitle:/ {print $2; exit}' "$POST_FILE" | sed 's/^"//;s/"$//')
          BODY=$(awk '/^---$/{c++;next} c==2' "$POST_FILE")

          jq -n \
            --arg title "${TITLE:-Release ${TAG}}" \
            --arg subtitle "${SUBTITLE}" \
            --arg body "$BODY" \
            --arg tag "$TAG" \
            --arg repo "${{ github.repository }}" \
            '{
              embeds: [{
                title: $title,
                description: ($subtitle + "\n\n" + $body),
                color: 12731404,
                url: ("https://gitea.hellion-forge.cloud/" + $repo + "/releases/tag/" + $tag),
                footer: { text: ($repo + " — " + $tag) }
              }]
            }' > payload.json

          echo "skip=false" >> "$GITHUB_OUTPUT"

      - name: Post to Discord
        if: steps.embed.outputs.skip != 'true'
        env:
          WEBHOOK: ${{ secrets.FORGE_DISCORD_WEBHOOK_URL }}
          THREAD_ID: ${{ secrets.FORGE_DISCORD_THREAD_ID }}
        run: |
          if [ -z "$WEBHOOK" ]; then
            echo "::error::FORGE_DISCORD_WEBHOOK_URL secret missing"
            exit 1
          fi
          URL="$WEBHOOK"
          if [ -n "$THREAD_ID" ]; then
            URL="${URL}?thread_id=${THREAD_ID}"
          fi
          curl -fsS -X POST -H 'Content-Type: application/json' --data @payload.json "$URL"