name: External Trigger Main

on:
  workflow_dispatch:

jobs:
  external-trigger-master:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2.3.3

      - name: External Trigger
        if: github.ref == 'refs/heads/master'
        run: |
          if [ -n "${{ secrets.PAUSE_EXTERNAL_TRIGGER_CALIBRE_WEB_MASTER }}" ]; then
            echo "**** Github secret PAUSE_EXTERNAL_TRIGGER_CALIBRE_WEB_MASTER is set; skipping trigger. ****"
            exit 0
          fi
          echo "**** External trigger running off of master branch. To disable this trigger, set a Github secret named \"PAUSE_EXTERNAL_TRIGGER_CALIBRE_WEB_MASTER\". ****"
          echo "**** Retrieving external version ****"
          EXT_RELEASE=$(curl -u "${{ secrets.CR_USER }}:${{ secrets.CR_PAT }}" -sX GET "https://api.github.com/repos/janeczku/calibre-web/releases/latest" | jq -r '. | .tag_name')
          if [ -z "${EXT_RELEASE}" ] || [ "${EXT_RELEASE}" == "null" ]; then
            echo "**** Can't retrieve external version, exiting ****"
            FAILURE_REASON="Can't retrieve external version for calibre-web branch master"
            curl -X POST -H "Content-Type: application/json" --data '{"avatar_url": "https://cdn.discordapp.com/avatars/354986384542662657/df91181b3f1cf0ef1592fbe18e0962d7.png","embeds": [{"color": 16711680,
              "description": "**Trigger Failed** \n**Reason:** '"${FAILURE_REASON}"' \n"}],
              "username": "Github Actions"}' ${{ secrets.DISCORD_WEBHOOK }}
            exit 1
          fi
          EXT_RELEASE=$(echo ${EXT_RELEASE} | sed 's/[~,%@+;:/]//g')
          echo "**** External version: ${EXT_RELEASE} ****"
          echo "**** Retrieving last pushed version ****"
          image="linuxserver/calibre-web"
          tag="latest"
          token=$(curl -sX GET \
            "https://ghcr.io/token?scope=repository%3Alinuxserver%2Fcalibre-web%3Apull" \
            | jq -r '.token')
            multidigest=$(curl -s \
              --header "Accept: application/vnd.docker.distribution.manifest.v2+json" \
              --header "Authorization: Bearer ${token}" \
              "https://ghcr.io/v2/${image}/manifests/${tag}" \
              | jq -r 'first(.manifests[].digest)')
            digest=$(curl -s \
              --header "Accept: application/vnd.docker.distribution.manifest.v2+json" \
              --header "Authorization: Bearer ${token}" \
              "https://ghcr.io/v2/${image}/manifests/${multidigest}" \
              | jq -r '.config.digest')
          image_info=$(curl -sL \
            --header "Authorization: Bearer ${token}" \
            "https://ghcr.io/v2/${image}/blobs/${digest}" \
            | jq -r '.container_config')
          IMAGE_RELEASE=$(echo ${image_info} | jq -r '.Labels.build_version' | awk '{print $3}')
          IMAGE_VERSION=$(echo ${IMAGE_RELEASE} | awk -F'-ls' '{print $1}')
          if [ -z "${IMAGE_VERSION}" ]; then
            echo "**** Can't retrieve last pushed version, exiting ****"
            FAILURE_REASON="Can't retrieve last pushed version for calibre-web tag latest"
            curl -X POST -H "Content-Type: application/json" --data '{"avatar_url": "https://cdn.discordapp.com/avatars/354986384542662657/df91181b3f1cf0ef1592fbe18e0962d7.png","embeds": [{"color": 16711680,
              "description": "**Trigger Failed** \n**Reason:** '"${FAILURE_REASON}"' \n"}],
              "username": "Github Actions"}' ${{ secrets.DISCORD_WEBHOOK }}
            exit 1
          fi
          echo "**** Last pushed version: ${IMAGE_VERSION} ****"
          if [ "${EXT_RELEASE}" == "${IMAGE_VERSION}" ]; then
            echo "**** Version ${EXT_RELEASE} already pushed, exiting ****"
            exit 0
          elif [ $(curl -s https://ci.linuxserver.io/job/Docker-Pipeline-Builders/job/docker-calibre-web/job/master/lastBuild/api/json | jq -r '.building') == "true" ]; then
            echo "**** New version ${EXT_RELEASE} found; but there already seems to be an active build on Jenkins; exiting ****"
            exit 0
          else
            echo "**** New version ${EXT_RELEASE} found; old version was ${IMAGE_VERSION}. Triggering new build ****"
            response=$(curl -iX POST \
              https://ci.linuxserver.io/job/Docker-Pipeline-Builders/job/docker-calibre-web/job/master/buildWithParameters?PACKAGE_CHECK=false \
              --user ${{ secrets.JENKINS_USER }}:${{ secrets.JENKINS_TOKEN }} | grep -i location | sed "s|^[L|l]ocation: \(.*\)|\1|")
            echo "**** Jenkins job queue url: ${response%$'\r'} ****"
            echo "**** Sleeping 10 seconds until job starts ****"
            sleep 10
            buildurl=$(curl -s "${response%$'\r'}api/json" | jq -r '.executable.url')
            buildurl="${buildurl%$'\r'}"
            echo "**** Jenkins job build url: ${buildurl} ****"
            echo "**** Attempting to change the Jenkins job description ****"
            curl -iX POST \
              "${buildurl}submitDescription" \
              --user ${{ secrets.JENKINS_USER }}:${{ secrets.JENKINS_TOKEN }} \
              --data-urlencode "description=GHA external trigger https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}" \
              --data-urlencode "Submit=Submit"
            echo "**** Notifying Discord ****"
            TRIGGER_REASON="A version change was detected for calibre-web tag latest. Old version:${IMAGE_VERSION} New version:${EXT_RELEASE}"
            curl -X POST -H "Content-Type: application/json" --data '{"avatar_url": "https://cdn.discordapp.com/avatars/354986384542662657/df91181b3f1cf0ef1592fbe18e0962d7.png","embeds": [{"color": 9802903,
              "description": "**Build Triggered** \n**Reason:** '"${TRIGGER_REASON}"' \n**Build URL:** '"${buildurl}display/redirect"' \n"}],
              "username": "Github Actions"}' ${{ secrets.DISCORD_WEBHOOK }}
          fi