name: Kernel Update Check

on:
  schedule:
    - cron: '0 8 1,15 * *'
  workflow_dispatch:

jobs:
  check-update:
    runs-on: iso-builder

    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Check CachyOS kernel version
        id: check
        run: |
          set -euo pipefail
          PKGBUILD=$(curl -fsSL --retry 3 \
            "https://raw.githubusercontent.com/CachyOS/linux-cachyos/master/linux-cachyos/PKGBUILD")
          MAJOR=$(echo "$PKGBUILD" | grep '^_major=' | cut -d= -f2)
          MINOR=$(echo "$PKGBUILD" | grep '^_minor=' | cut -d= -f2)
          TAGREL=$(echo "$PKGBUILD" | grep '^_tagrel=' | cut -d= -f2)
          if [ -z "$MAJOR" ] || [ -z "$MINOR" ] || [ -z "$TAGREL" ]; then
            echo "HIBA: Nem sikerult a CachyOS verziot lekerdezni"
            exit 1
          fi
          echo "MAJOR=$MAJOR" >> $GITHUB_OUTPUT
          echo "MINOR=$MINOR" >> $GITHUB_OUTPUT
          echo "TAGREL=$TAGREL" >> $GITHUB_OUTPUT
          echo "Legfrissebb CachyOS: ${MAJOR}.${MINOR}-${TAGREL}"

      - name: Read current version
        id: current
        run: |
          set -euo pipefail
          MAJOR=$(grep '^_major=' linux-raveos/PKGBUILD | cut -d= -f2)
          MINOR=$(grep '^_minor=' linux-raveos/PKGBUILD | cut -d= -f2)
          TAGREL=$(grep '^_tagrel=' linux-raveos/PKGBUILD | cut -d= -f2)
          echo "MAJOR=$MAJOR" >> $GITHUB_OUTPUT
          echo "MINOR=$MINOR" >> $GITHUB_OUTPUT
          echo "TAGREL=$TAGREL" >> $GITHUB_OUTPUT
          echo "Jelenlegi: ${MAJOR}.${MINOR}-${TAGREL}"

      - name: Frissites szukseges?
        id: needsupdate
        run: |
          set -euo pipefail
          NEW="${{ steps.check.outputs.MAJOR }}.${{ steps.check.outputs.MINOR }}-${{ steps.check.outputs.TAGREL }}"
          CUR="${{ steps.current.outputs.MAJOR }}.${{ steps.current.outputs.MINOR }}-${{ steps.current.outputs.TAGREL }}"
          if [ "$NEW" != "$CUR" ]; then
            echo "UPDATE=yes" >> $GITHUB_OUTPUT
            echo "Frissites: $CUR -> $NEW"
          else
            echo "UPDATE=no" >> $GITHUB_OUTPUT
            echo "Aktualis, nincs frissites: $CUR"
          fi

      - name: PR mar letezik? Regi PR-ok lezarasa
        id: prcheck
        if: steps.needsupdate.outputs.UPDATE == 'yes'
        run: |
          set -euo pipefail
          BRANCH="update/kernel-${{ steps.check.outputs.MAJOR }}.${{ steps.check.outputs.MINOR }}-${{ steps.check.outputs.TAGREL }}"

          # Lekerjuk az osszes nyitott kernel update PR-t
          OPEN_PRS=$(curl -fsSL \
            -H "Authorization: token ${{ secrets.FORGEJO_TOKEN }}" \
            "https://git.rp1.hu/api/v1/repos/${{ github.repository }}/pulls?state=open&limit=50")

          # Regi kernel update PR-ok lezarasa (ha nem ez az uj branch)
          echo "$OPEN_PRS" | python3 -c "
          import sys, json
          pulls = json.load(sys.stdin)
          new_branch = '$BRANCH'
          for p in pulls:
              head = p.get('head', {}).get('ref', '')
              if head.startswith('update/kernel-') and head != new_branch:
                  print(p['number'])
          " | while read -r pr_num; do
            curl -fsSL -X PATCH \
              -H "Authorization: token ${{ secrets.FORGEJO_TOKEN }}" \
              -H "Content-Type: application/json" \
              "https://git.rp1.hu/api/v1/repos/${{ github.repository }}/pulls/${pr_num}" \
              -d '{"state":"closed"}' > /dev/null
            echo "Regi PR #${pr_num} lezarva"
          done

          # Ellenorizzuk hogy az uj branch PR-ja letezik-e mar
          EXISTS=$(echo "$OPEN_PRS" | python3 -c "
          import sys, json
          pulls = json.load(sys.stdin)
          branch = '$BRANCH'
          found = any(p.get('head', {}).get('ref', '') == branch for p in pulls)
          print('yes' if found else 'no')
          ")
          echo "EXISTS=$EXISTS" >> $GITHUB_OUTPUT
          echo "PR letezik: $EXISTS"

      - name: Update branch letrehozasa
        if: steps.needsupdate.outputs.UPDATE == 'yes' && steps.prcheck.outputs.EXISTS == 'no'
        run: |
          set -euo pipefail
          BRANCH="update/kernel-${{ steps.check.outputs.MAJOR }}.${{ steps.check.outputs.MINOR }}-${{ steps.check.outputs.TAGREL }}"

          git config user.name "RaveOS Bot"
          git config user.email "bot@raveos.hu"
          git checkout -b "$BRANCH"

          # PKGBUILD frissitese
          sed -i "s/^_major=.*/_major=${{ steps.check.outputs.MAJOR }}/" linux-raveos/PKGBUILD
          sed -i "s/^_minor=.*/_minor=${{ steps.check.outputs.MINOR }}/" linux-raveos/PKGBUILD
          sed -i "s/^_tagrel=.*/_tagrel=${{ steps.check.outputs.TAGREL }}/" linux-raveos/PKGBUILD

          # Uj CachyOS config letoltese
          curl -fsSL --retry 3 \
            "https://raw.githubusercontent.com/CachyOS/linux-cachyos/master/linux-cachyos/config" \
            -o linux-raveos/config

          # RaveOS modositasok visszarakasa a configba
          sed -i 's/^CONFIG_ZRAM=m$/CONFIG_ZRAM=y/' linux-raveos/config
          sed -i 's/^CONFIG_NTSYNC=m$/CONFIG_NTSYNC=y/' linux-raveos/config

          git add linux-raveos/PKGBUILD linux-raveos/config
          git commit -m "update: linux-raveos kernel ${{ steps.check.outputs.MAJOR }}.${{ steps.check.outputs.MINOR }}-${{ steps.check.outputs.TAGREL }}"

          git remote set-url origin "https://bot:${{ secrets.FORGEJO_TOKEN }}@git.rp1.hu/RaveOS/RaveOS-PKGBUILD.git"
          git push origin "$BRANCH"

      - name: PR nyitasa
        if: steps.needsupdate.outputs.UPDATE == 'yes' && steps.prcheck.outputs.EXISTS == 'no'
        run: |
          set -euo pipefail
          BRANCH="update/kernel-${{ steps.check.outputs.MAJOR }}.${{ steps.check.outputs.MINOR }}-${{ steps.check.outputs.TAGREL }}"
          NEW="${{ steps.check.outputs.MAJOR }}.${{ steps.check.outputs.MINOR }}-${{ steps.check.outputs.TAGREL }}"
          CUR="${{ steps.current.outputs.MAJOR }}.${{ steps.current.outputs.MINOR }}-${{ steps.current.outputs.TAGREL }}"

          curl -fsSL -X POST \
            -H "Authorization: token ${{ secrets.FORGEJO_TOKEN }}" \
            -H "Content-Type: application/json" \
            "https://git.rp1.hu/api/v1/repos/${{ github.repository }}/pulls" \
            -d "{
              \"title\": \"kernel update: ${CUR} -> ${NEW}\",
              \"head\": \"${BRANCH}\",
              \"base\": \"main\",
              \"body\": \"Automatikus kernel frissites.\n\n- Regi verzio: \`${CUR}\`\n- Uj verzio: \`${NEW}\`\n\nEllenorizd a config diff-et merge elott. Merge utan automatikusan elindul a build.\"
            }"
          echo "PR megnyitva: $BRANCH -> main"