name: CI / Release / Docs

on:
  push:
    branches: [master]

permissions:
  contents: write

jobs:
  lint-markdown:
    name: Markdown Lint
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Run markdownlint-cli2
        uses: DavidAnson/markdownlint-cli2-action@v19
        with:
          globs: |
            **/*.md
            !.dev/**
            !docs/api/**
            !**/node_modules/**
            !**/bin/**
            !**/obj/**

  detect-changes:
    name: Detect Changes
    runs-on: ubuntu-latest
    outputs:
      src_changed: ${{ steps.check.outputs.src_changed }}
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Check for src/ changes
        id: check
        run: |
          BEFORE=${{ github.event.before }}
          if [ "$BEFORE" = "0000000000000000000000000000000000000000" ]; then
            # Initial push — treat everything as changed
            echo "src_changed=true" >> "$GITHUB_OUTPUT"
          else
            CHANGED=$(git diff --name-only "$BEFORE" HEAD -- 'src/' | wc -l)
            if [ "$CHANGED" -gt 0 ]; then
              echo "src_changed=true" >> "$GITHUB_OUTPUT"
            else
              echo "src_changed=false" >> "$GITHUB_OUTPUT"
            fi
          fi

  test:
    name: Build & Test
    needs: [lint-markdown, detect-changes]
    if: needs.detect-changes.outputs.src_changed == 'true'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Setup .NET 10
        uses: actions/setup-dotnet@v4
        with:
          dotnet-version: '10.0.x'

      - name: Restore dependencies
        run: dotnet restore src/EchoHub.slnx

      - name: Build
        run: dotnet build src/EchoHub.slnx --no-restore --configuration Release

      - name: Test
        run: dotnet test src/EchoHub.slnx --no-build --configuration Release --verbosity normal

  release:
    name: Create Release
    needs: [lint-markdown, detect-changes, test]
    if: needs.detect-changes.outputs.src_changed == 'true'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Setup .NET 10
        uses: actions/setup-dotnet@v4
        with:
          dotnet-version: '10.0.x'

      - name: Read version
        id: version
        run: |
          VERSION=$(grep -oP '(?<=<Version>)[^<]+' src/Directory.Build.props)
          echo "version=$VERSION" >> "$GITHUB_OUTPUT"
          echo "tag=v$VERSION" >> "$GITHUB_OUTPUT"

      - name: Check if release exists
        id: check_release
        run: |
          if gh release view "${{ steps.version.outputs.tag }}" &>/dev/null; then
            echo "exists=true" >> "$GITHUB_OUTPUT"
          else
            echo "exists=false" >> "$GITHUB_OUTPUT"
          fi
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Publish Server win-x64
        if: steps.check_release.outputs.exists == 'false'
        run: dotnet publish src/EchoHub.Server/EchoHub.Server.csproj -c Release -r win-x64 --self-contained true -o publish/server-win-x64

      - name: Publish Server linux-x64
        if: steps.check_release.outputs.exists == 'false'
        run: dotnet publish src/EchoHub.Server/EchoHub.Server.csproj -c Release -r linux-x64 --self-contained true -o publish/server-linux-x64

      - name: Publish Server osx-x64
        if: steps.check_release.outputs.exists == 'false'
        run: dotnet publish src/EchoHub.Server/EchoHub.Server.csproj -c Release -r osx-x64 --self-contained true -o publish/server-osx-x64

      - name: Publish Client win-x64
        if: steps.check_release.outputs.exists == 'false'
        run: dotnet publish src/EchoHub.Client/EchoHub.Client.csproj -c Release -r win-x64 --self-contained true -o publish/client-win-x64

      - name: Publish Client linux-x64
        if: steps.check_release.outputs.exists == 'false'
        run: dotnet publish src/EchoHub.Client/EchoHub.Client.csproj -c Release -r linux-x64 --self-contained true -o publish/client-linux-x64

      - name: Publish Client osx-x64
        if: steps.check_release.outputs.exists == 'false'
        run: dotnet publish src/EchoHub.Client/EchoHub.Client.csproj -c Release -r osx-x64 --self-contained true -o publish/client-osx-x64

      - name: Zip artifacts
        if: steps.check_release.outputs.exists == 'false'
        run: |
          cd publish
          zip -r ../EchoHub-Server-win-x64.zip server-win-x64/
          zip -r ../EchoHub-Server-linux-x64.zip server-linux-x64/
          zip -r ../EchoHub-Server-osx-x64.zip server-osx-x64/
          zip -r ../EchoHub-Client-win-x64.zip client-win-x64/
          zip -r ../EchoHub-Client-linux-x64.zip client-linux-x64/
          zip -r ../EchoHub-Client-osx-x64.zip client-osx-x64/

      - name: Create GitHub Release
        if: steps.check_release.outputs.exists == 'false'
        run: |
          gh release create "${{ steps.version.outputs.tag }}" \
            --title "EchoHub ${{ steps.version.outputs.tag }}" \
            --generate-notes \
            EchoHub-Server-win-x64.zip \
            EchoHub-Server-linux-x64.zip \
            EchoHub-Server-osx-x64.zip \
            EchoHub-Client-win-x64.zip \
            EchoHub-Client-linux-x64.zip \
            EchoHub-Client-osx-x64.zip
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

  docs:
    name: Build & Deploy Docs
    needs: lint-markdown
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Setup .NET 10
        uses: actions/setup-dotnet@v4
        with:
          dotnet-version: '10.0.x'

      - name: Restore .NET tools
        run: dotnet tool restore

      - name: Build solution
        run: dotnet build src/EchoHub.slnx --configuration Release

      - name: Generate documentation
        run: dotnet docfx docs/docfx.json

      - name: Deploy to web branch
        uses: peaceiris/actions-gh-pages@v4
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          publish_dir: ./docs/_site
          publish_branch: web