name: Site Pack
on:
  push:
    branches:
      - main
  repository_dispatch:
    types:
      - build-pack
  schedule:
    # Poll all source repos every 15 minutes; rebuild only if a component changed.
    - cron: "*/15 * * * *"
  workflow_dispatch:
    inputs:
      force:
        description: "Force rebuild even if nothing changed"
        required: false
        default: "false"

jobs:
  pack:
    runs-on: shell
    env:
      GITEA_API: ${{ gitea.api_url }}
      GITEA_REPO: ${{ gitea.repository }}
      TOKEN: ${{ secrets.GITEA_TOKEN }}
      FORCE: ${{ github.event.inputs.force }}
      CACHE_DIR: /var/tmp/pack-cache
      CMS_URL: ${{ gitea.server_url }}/${{ gitea.repository }}
      CAT_URL: https://gitlab.epicnabbo.nl/remco/Epicnabbo-Catalogus-Updated-Daily
      NITRO_URL: https://github.com/duckietm/Nitro-V3
      RENDER_URL: https://github.com/duckietm/Nitro_Render_V3
      EMU_URL: https://github.com/duckietm/Polaris-Emulator
    steps:
      - name: Check for upstream changes
        id: check
        run: |
          set -e
          exec 2>&1
          CMS_REF="$(git -C /docker/gitea/gitea/git/repositories/remco/epicnext-cms.git rev-parse main 2>/dev/null \
            || git ls-remote https://gitlab.epicnabbo.nl/remco/EpicNext-Cms.git main 2>/dev/null | awk '{print $1}')"
          CAT_REF="$(git ls-remote https://gitlab.epicnabbo.nl/remco/Epicnabbo-Catalogus-Updated-Daily.git Beta-3 2>/dev/null | awk '{print $1}')"
          NITRO_REF="$(git ls-remote https://github.com/duckietm/Nitro-V3.git main 2>/dev/null | awk '{print $1}')"
          RENDER_REF="$(git ls-remote https://github.com/duckietm/Nitro_Render_V3.git main 2>/dev/null | awk '{print $1}')"
          EMU_REF="$(git ls-remote https://github.com/duckietm/Polaris-Emulator.git main 2>/dev/null | awk '{print $1}')"
          COMBINED="${CMS_REF}:${CAT_REF}:${NITRO_REF}:${RENDER_REF}:${EMU_REF}"
          echo "Current refs: $COMBINED"
          STATE="$CACHE_DIR/refs.state"
          mkdir -p "$CACHE_DIR"
          PREV="$(cat "$STATE" 2>/dev/null || echo "")"
          CHANGED=""
          if [ "${FORCE:-false}" = "true" ]; then
            CHANGED="force"
          elif [ "$COMBINED" != "$PREV" ]; then
            CHANGED="upstream"
          fi
          if [ -n "$CHANGED" ]; then
            echo "Change detected ($CHANGED)"
            echo "changed=true" >> "$GITHUB_OUTPUT"
          else
            echo "No upstream changes since last pack"
            echo "changed=false" >> "$GITHUB_OUTPUT"
          fi
          echo "$COMBINED" > "$STATE"
          echo "cms_ref=$CMS_REF" >> "$GITHUB_OUTPUT"
          echo "cat_ref=$CAT_REF" >> "$GITHUB_OUTPUT"
          echo "nitro_ref=$NITRO_REF" >> "$GITHUB_OUTPUT"
          echo "render_ref=$RENDER_REF" >> "$GITHUB_OUTPUT"
          echo "emu_ref=$EMU_REF" >> "$GITHUB_OUTPUT"

      - name: Skip if unchanged
        if: steps.check.outputs.changed != 'true'
        run: |
          echo "Nothing to rebuild. Exiting."
          exit 0

      - name: Setup
        if: steps.check.outputs.changed == 'true'
        run: |
          set -e
          exec 2>&1
          export PACK_VERSION="pack-$(date +%Y%m%d-%H%M)"
          echo "=== Building site pack ${PACK_VERSION} ==="
          WORK="/tmp/pack-build"
          rm -rf "$WORK" && mkdir -p "$WORK/src" "$WORK/out" "$CACHE_DIR"
          echo "WORK=$WORK" >> "$GITHUB_ENV"
          echo "PACK_VERSION=$PACK_VERSION" >> "$GITHUB_ENV"

      # ---- Only the CMS repo is bundled; the rest are linked ----
      - name: CMS (this repo)
        if: steps.check.outputs.changed == 'true'
        run: |
          set -e
          S="$CACHE_DIR/cms"; mkdir -p "$S"
          if [ "${{ steps.check.outputs.cms_ref }}" != "$(cat "$S/ref" 2>/dev/null)" ]; then
            rm -rf "$WORK/src/cms"
            git clone --depth 1 "file:///docker/gitea/gitea/git/repositories/remco/epicnext-cms.git" "$WORK/src/cms" 2>/dev/null \
              || git clone --depth 1 "${{ gitea.server_url }}/${{ gitea.repository }}.git" "$WORK/src/cms" 2>/dev/null \
              || git -C "$WORK/src/cms" pull --ff-only 2>/dev/null
            echo "${{ steps.check.outputs.cms_ref }}" > "$S/ref"
            rm -rf "$S/snapshot"; cp -r "$WORK/src/cms" "$S/snapshot"
          else
            cp -r "$S/snapshot" "$WORK/src/cms"
            echo "CMS unchanged — reused cache"
          fi
          echo "cms: $(git -C "$WORK/src/cms" rev-parse --short HEAD 2>/dev/null)" | tee -a "$WORK/components.txt"

      - name: Assemble Pack (CMS + repo links)
        if: steps.check.outputs.changed == 'true'
        run: |
          set -e
          cd "$WORK/out"
          cp -r "$WORK/src/cms" "$WORK/out/cms" 2>/dev/null || true
          rm -rf "$WORK/out/cms/.git" "$WORK/out/cms/node_modules" 2>/dev/null || true
          short() { echo "$1" | cut -c1-8; }
          {
            echo "# Site Pack ${PACK_VERSION}"
            echo ""
            echo "Generated: $(date -u)"
            echo ""
            echo "This pack bundles the **EpicNext-CMS** source. The other components are linked below at the exact commit used."
            echo ""
            echo "## Bundled"
            echo ""
            echo "- \`cms/\` — EpicNext-CMS (this repository)"
            echo ""
            echo "## Linked repositories (exact commits)"
            echo ""
            echo "| Component | Repository | Commit |"
            echo "|-----------|------------|--------|"
            echo "| Catalogus | ${CAT_URL} | $(short "${{ steps.check.outputs.cat_ref }}") |"
            echo "| Nitro-V3 | ${NITRO_URL} | $(short "${{ steps.check.outputs.nitro_ref }}") |"
            echo "| Nitro-Render-V3 | ${RENDER_URL} | $(short "${{ steps.check.outputs.render_ref }}") |"
            echo "| Polaris Emulator | ${EMU_URL} | $(short "${{ steps.check.outputs.emu_ref }}") |"
            echo ""
            echo "Clone a component at its pinned commit:"
            echo '```'
            echo "git clone ${CAT_URL} && (cd Epicnabbo-Catalogus-Updated-Daily && git checkout ${{ steps.check.outputs.cat_ref }})"
            echo "git clone ${NITRO_URL} && (cd Nitro-V3 && git checkout ${{ steps.check.outputs.nitro_ref }})"
            echo "git clone ${RENDER_URL} && (cd Nitro_Render_V3 && git checkout ${{ steps.check.outputs.render_ref }})"
            echo "git clone ${EMU_URL} && (cd Polaris-Emulator && git checkout ${{ steps.check.outputs.emu_ref }})"
            echo '```'
          } > "$WORK/out/MANIFEST.md"
          cp "$WORK/out/MANIFEST.md" "$WORK/out/COMPONENTS.txt"
          echo "Built at $(date -u)" > "$WORK/out/BUILD_INFO.txt"
          cat "$WORK/components.txt" >> "$WORK/out/BUILD_INFO.txt"
          PACK_FILE="/tmp/${PACK_VERSION}.tar.gz"
          tar -czf "$PACK_FILE" -C "$WORK/out" .
          echo "PACK_FILE=$PACK_FILE" >> "$GITHUB_ENV"
          echo "Pack created: $(du -h "$PACK_FILE" | cut -f1)"

      - name: Build Changelog
        if: steps.check.outputs.changed == 'true'
        run: |
          set -e
          BARE="/docker/gitea/gitea/git/repositories/remco/epicnext-cms.git"
          PREV="$(git -C "$BARE" tag --list 'pack-*' --sort=-creatordate | head -1 || echo '')"
          PREV_NOTE="${PREV:-initial}"
          {
            echo "## Site Pack ${PACK_VERSION}"
            echo ""
            echo "Lightweight pack: bundles the EpicNext-CMS source and links the other components at their exact commits."
            echo ""
            echo "### Linked component commits"
            echo '```'
            echo "CMS (bundled):       ${{ steps.check.outputs.cms_ref }}"
            echo "Catalogus:          ${{ steps.check.outputs.cat_ref }}"
            echo "Nitro-V3:           ${{ steps.check.outputs.nitro_ref }}"
            echo "Nitro-Render-V3:    ${{ steps.check.outputs.render_ref }}"
            echo "Polaris Emulator:   ${{ steps.check.outputs.emu_ref }}"
            echo '```'
            echo ""
            echo "### CMS changes since pack ${PREV_NOTE}"
            echo '```'
            git -C "$WORK/src/cms" log --oneline --no-decorate -10 2>/dev/null || echo "n/a"
            echo '```'
          } > /tmp/pack-body.md
          cat /tmp/pack-body.md

      - name: Create Release + Upload Pack
        if: steps.check.outputs.changed == 'true'
        run: |
          set -e
          : "${PACK_FILE:?PACK_FILE not set}"
          : "${GITEA_API:?GITEA_API not set}"
          : "${GITEA_REPO:?GITEA_REPO not set}"
          T="${TOKEN:-${GITEA_TOKEN}}"
          [ -n "$T" ] || { echo "No token available"; exit 1; }
          BODY="$(jq -Rs '.' < /tmp/pack-body.md)"
          PAYLOAD="$(jq -n --arg tag "${PACK_VERSION}" --arg name "${PACK_VERSION}" --arg body "$BODY" '{tag_name: $tag, name: $name, body: $body, draft: false, prerelease: false}')"
          echo "Creating release via ${GITEA_API}/repos/${GITEA_REPO}/releases"
          HTTP="$(curl -s -w '%{http_code}' -o /tmp/pack-rel.json \
            --retry 3 --retry-delay 3 \
            -X POST "${GITEA_API}/repos/${GITEA_REPO}/releases" \
            -H "Authorization: token ${T}" -H "Content-Type: application/json" -d "$PAYLOAD" || echo 000)"
          echo "Create release HTTP: ${HTTP}"
          cat /tmp/pack-rel.json | head -c 500; echo
          if [ "${HTTP}" = "409" ]; then
            REL_ID="$(curl -sf "${GITEA_API}/repos/${GITEA_REPO}/releases" -H "Authorization: token ${T}" | jq -r ".[] | select(.tag_name==\"${PACK_VERSION}\") | .id" || true)"
            HTTP="$(curl -s -w '%{http_code}' -o /tmp/pack-rel.json -X PATCH "${GITEA_API}/repos/${GITEA_REPO}/releases/${REL_ID}" -H "Authorization: token ${T}" -H "Content-Type: application/json" -d "$PAYLOAD" || echo 000)"
            echo "Patch release HTTP: ${HTTP}"
          fi
          REL_ID="$(jq -r '.id' /tmp/pack-rel.json 2>/dev/null || echo "")"
          [ -n "$REL_ID" ] || { echo "No release ID from response"; exit 1; }
          echo "Uploading asset to release ${REL_ID}"
          UP="$(curl -s -w '%{http_code}' -o /tmp/pack-asset.json \
            -X POST "${GITEA_API}/repos/${GITEA_REPO}/releases/${REL_ID}/assets?name=${PACK_VERSION}.tar.gz" \
            -H "Authorization: token ${T}" -H "Content-Type: application/gzip" --data-binary @"${PACK_FILE}" || echo 000)"
          echo "Asset upload HTTP: ${UP}"
          cat /tmp/pack-asset.json | head -c 300; echo
          echo "Release ${PACK_VERSION} created with pack asset"