name: OpenAPI
on:
  push:
    branches:
      - master
    tags:
      - 'v*'
  pull_request_target:

permissions: {}

jobs:
  openapi-head:
    name: OpenAPI - HEAD
    runs-on: ubuntu-latest
    permissions: read-all
    steps:
      - name: Checkout repository
        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
        with:
          ref: ${{ github.event.pull_request.head.sha }}
          repository: ${{ github.event.pull_request.head.repo.full_name }}

      - name: Setup .NET
        uses: actions/setup-dotnet@2016bd2012dba4e32de620c46fe006a3ac9f0602 # v5.0.1
        with:
          dotnet-version: '9.0.x'

      - name: Generate openapi.json
        run: dotnet test tests/Jellyfin.Server.Integration.Tests/Jellyfin.Server.Integration.Tests.csproj -c Release --filter "Jellyfin.Server.Integration.Tests.OpenApiSpecTests"

      - name: Upload openapi.json
        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
        with:
          name: openapi-head
          retention-days: 14
          if-no-files-found: error
          path: tests/Jellyfin.Server.Integration.Tests/bin/Release/net9.0/openapi.json

  openapi-base:
    name: OpenAPI - BASE
    if: ${{ github.base_ref != '' }}
    runs-on: ubuntu-latest
    permissions: read-all
    steps:
      - name: Checkout repository
        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
        with:
          ref: ${{ github.event.pull_request.head.sha }}
          repository: ${{ github.event.pull_request.head.repo.full_name }}
          fetch-depth: 0

      - name: Checkout common ancestor
        env:
          HEAD_REF: ${{ github.head_ref }}
        run: |
          git remote add upstream https://github.com/${{ github.event.pull_request.base.repo.full_name }}
          git -c protocol.version=2 fetch --prune --progress --no-recurse-submodules upstream +refs/heads/*:refs/remotes/upstream/* +refs/tags/*:refs/tags/*
          ANCESTOR_REF=$(git merge-base upstream/${{ github.base_ref }} origin/$HEAD_REF)
          git checkout --progress --force $ANCESTOR_REF

      - name: Setup .NET
        uses: actions/setup-dotnet@2016bd2012dba4e32de620c46fe006a3ac9f0602 # v5.0.1
        with:
          dotnet-version: '9.0.x'

      - name: Generate openapi.json
        run: dotnet test tests/Jellyfin.Server.Integration.Tests/Jellyfin.Server.Integration.Tests.csproj -c Release --filter "Jellyfin.Server.Integration.Tests.OpenApiSpecTests"

      - name: Upload openapi.json
        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
        with:
          name: openapi-base
          retention-days: 14
          if-no-files-found: error
          path: tests/Jellyfin.Server.Integration.Tests/bin/Release/net9.0/openapi.json

  openapi-diff:
    permissions:
      pull-requests: write

    name: OpenAPI - Difference
    if: ${{ github.event_name == 'pull_request_target' }}
    runs-on: ubuntu-latest
    needs:
      - openapi-head
      - openapi-base
    steps:
      - name: Download openapi-head
        uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131 # v7.0.0
        with:
          name: openapi-head
          path: openapi-head

      - name: Download openapi-base
        uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131 # v7.0.0
        with:
          name: openapi-base
          path: openapi-base

      - name: Detect OpenAPI changes
        id: openapi-diff
        uses: Shadowghost/openapi-diff-action@v1.0.0
        with:
          old-spec: openapi-base/openapi.json
          new-spec: openapi-head/openapi.json
          markdown: openapi-changelog.md
          add-pr-comment: true
          github-token: ${{ secrets.GITHUB_TOKEN }}


  publish-unstable:
    name: OpenAPI - Publish Unstable Spec
    if: ${{ github.event_name != 'pull_request_target' && !startsWith(github.ref, 'refs/tags/v') && contains(github.repository_owner, 'jellyfin') }}
    runs-on: ubuntu-latest
    needs:
      - openapi-head
    steps:
      - name: Set unstable dated version
        id: version
        run: |-
          echo "JELLYFIN_VERSION=$(date +'%Y%m%d%H%M%S')" >> $GITHUB_ENV
      - name: Download openapi-head
        uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131 # v7.0.0
        with:
          name: openapi-head
          path: openapi-head
      - name: Upload openapi.json (unstable) to repository server
        uses: appleboy/scp-action@ff85246acaad7bdce478db94a363cd2bf7c90345 # v1.0.0
        with:
          host: "${{ secrets.REPO_HOST }}"
          username: "${{ secrets.REPO_USER }}"
          key: "${{ secrets.REPO_KEY }}"
          source: openapi-head/openapi.json
          strip_components: 1
          target: "/srv/incoming/openapi/unstable/jellyfin-openapi-${{ env.JELLYFIN_VERSION }}"
      - name: Move openapi.json (unstable) into place
        uses: appleboy/ssh-action@823bd89e131d8d508129f9443cad5855e9ba96f0 # v1.2.4
        with:
          host: "${{ secrets.REPO_HOST }}"
          username: "${{ secrets.REPO_USER }}"
          key: "${{ secrets.REPO_KEY }}"
          debug: false
          script: |
            if ! test -d /run/workflows; then
                sudo mkdir -p /run/workflows
                sudo chown ${{ secrets.REPO_USER }} /run/workflows
            fi
            (
            flock -x -w 300 200 || exit 1
            TGT_DIR="/srv/repository/main/openapi"
            LAST_SPEC="$( ls -lt ${TGT_DIR}/unstable/ | grep 'jellyfin-openapi' | head -1 | awk '{ print $NF }' )"
            # If new and previous spec don't differ (diff retcode 0), remove incoming and finish
            if diff /srv/incoming/openapi/unstable/jellyfin-openapi-${{ env.JELLYFIN_VERSION }}/openapi.json ${TGT_DIR}/unstable/${LAST_SPEC} &>/dev/null; then
                rm -r /srv/incoming/openapi/unstable/jellyfin-openapi-${{ env.JELLYFIN_VERSION }}
                exit 0
            fi
            # Move new spec into place
            sudo mv /srv/incoming/openapi/unstable/jellyfin-openapi-${{ env.JELLYFIN_VERSION }}/openapi.json ${TGT_DIR}/unstable/jellyfin-openapi-${{ env.JELLYFIN_VERSION }}.json
            # Delete previous jellyfin-openapi-unstable_previous.json
            sudo rm ${TGT_DIR}/jellyfin-openapi-unstable_previous.json
            # Move current jellyfin-openapi-unstable.json symlink to jellyfin-openapi-unstable_previous.json
            sudo mv ${TGT_DIR}/jellyfin-openapi-unstable.json ${TGT_DIR}/jellyfin-openapi-unstable_previous.json
            # Create new jellyfin-openapi-unstable.json symlink
            sudo ln -s unstable/jellyfin-openapi-${{ env.JELLYFIN_VERSION }}.json ${TGT_DIR}/jellyfin-openapi-unstable.json
            # Check that the previous openapi unstable spec link is correct
            if [[ "$( readlink ${TGT_DIR}/jellyfin-openapi-unstable_previous.json )" != "unstable/${LAST_SPEC}" ]]; then
                sudo rm ${TGT_DIR}/jellyfin-openapi-unstable_previous.json
                sudo ln -s unstable/${LAST_SPEC} ${TGT_DIR}/jellyfin-openapi-unstable_previous.json
            fi
            ) 200>/run/workflows/openapi-unstable.lock

  publish-stable:
    name: OpenAPI - Publish Stable Spec
    if: ${{ startsWith(github.ref, 'refs/tags/v') && contains(github.repository_owner, 'jellyfin') }}
    runs-on: ubuntu-latest
    needs:
      - openapi-head
    steps:
      - name: Set version number
        id: version
        run: |-
          echo "JELLYFIN_VERSION=${GITHUB_REF#refs/tags/v}" >> $GITHUB_ENV
      - name: Download openapi-head
        uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131 # v7.0.0
        with:
          name: openapi-head
          path: openapi-head
      - name: Upload openapi.json (stable) to repository server
        uses: appleboy/scp-action@ff85246acaad7bdce478db94a363cd2bf7c90345 # v1.0.0
        with:
          host: "${{ secrets.REPO_HOST }}"
          username: "${{ secrets.REPO_USER }}"
          key: "${{ secrets.REPO_KEY }}"
          source: openapi-head/openapi.json
          strip_components: 1
          target: "/srv/incoming/openapi/stable/jellyfin-openapi-${{ env.JELLYFIN_VERSION }}"
      - name: Move openapi.json (stable) into place
        uses: appleboy/ssh-action@823bd89e131d8d508129f9443cad5855e9ba96f0 # v1.2.4
        with:
          host: "${{ secrets.REPO_HOST }}"
          username: "${{ secrets.REPO_USER }}"
          key: "${{ secrets.REPO_KEY }}"
          debug: false
          script: |
            if ! test -d /run/workflows; then
                sudo mkdir -p /run/workflows
                sudo chown ${{ secrets.REPO_USER }} /run/workflows
            fi
            (
            flock -x -w 300 200 || exit 1
            TGT_DIR="/srv/repository/main/openapi"
            LAST_SPEC="$( ls -lt ${TGT_DIR}/stable/ | grep 'jellyfin-openapi' | head -1 | awk '{ print $NF }' )"
            # If new and previous spec don't differ (diff retcode 0), remove incoming and finish
            if diff /srv/incoming/openapi/stable/jellyfin-openapi-${{ env.JELLYFIN_VERSION }}/openapi.json ${TGT_DIR}/stable/${LAST_SPEC} &>/dev/null; then
                rm -r /srv/incoming/openapi/stable/jellyfin-openapi-${{ env.JELLYFIN_VERSION }}
                exit 0
            fi
            # Move new spec into place
            sudo mv /srv/incoming/openapi/stable/jellyfin-openapi-${{ env.JELLYFIN_VERSION }}/openapi.json ${TGT_DIR}/stable/jellyfin-openapi-${{ env.JELLYFIN_VERSION }}.json
            # Delete previous jellyfin-openapi-stable_previous.json
            sudo rm ${TGT_DIR}/jellyfin-openapi-stable_previous.json
            # Move current jellyfin-openapi-stable.json symlink to jellyfin-openapi-stable_previous.json
            sudo mv ${TGT_DIR}/jellyfin-openapi-stable.json ${TGT_DIR}/jellyfin-openapi-stable_previous.json
            # Create new jellyfin-openapi-stable.json symlink
            sudo ln -s stable/jellyfin-openapi-${{ env.JELLYFIN_VERSION }}.json ${TGT_DIR}/jellyfin-openapi-stable.json
            # Check that the previous openapi stable spec link is correct
            if [[ "$( readlink ${TGT_DIR}/jellyfin-openapi-stable_previous.json )" != "stable/${LAST_SPEC}" ]]; then
                sudo rm ${TGT_DIR}/jellyfin-openapi-stable_previous.json
                sudo ln -s stable/${LAST_SPEC} ${TGT_DIR}/jellyfin-openapi-stable_previous.json
            fi
            ) 200>/run/workflows/openapi-stable.lock