snap.yml

# Builds the Linux Snap and (optionally) publishes it to the Snap Store.
# - On a v* tag: builds the .snap, attaches it to the GitHub Release, and — if the
#   SNAPCRAFT_STORE_CREDENTIALS secret is set — uploads it to the stable channel.
# - Manual run (workflow_dispatch): just builds + uploads the .snap as an artifact.
#
# To enable auto-publish: create a token with `snapcraft export-login --snaps=downloader \
#   --acls package_access,package_push,package_update,package_release -` and add it as the
# repo secret SNAPCRAFT_STORE_CREDENTIALS. Otherwise download the artifact and run
# `snapcraft upload --release=stable` yourself.
name: Snap

on:
  push:
    tags: [ "v*" ]
  workflow_dispatch:

permissions:
  contents: write   # let action-gh-release attach the .snap to the release

jobs:
  build:
    runs-on: ubuntu-latest
    timeout-minutes: 40
    steps:
      - uses: actions/checkout@v5

      - name: Install .NET
        uses: actions/setup-dotnet@v5
        with:
          dotnet-version: 10.0.x

      - name: Publish self-contained linux-x64
        run: |
          VER=$(grep -oPm1 '(?<=<VersionPrefix>)[^<]+' src/Downloader.Desktop/Downloader.Desktop.csproj)
          [[ "$GITHUB_REF" == refs/tags/v* ]] && VER="${GITHUB_REF_NAME#v}"
          echo "$VER" > snap/local/VERSION
          dotnet publish src/Downloader.Desktop/Downloader.Desktop.csproj \
            -c Release -r linux-x64 --self-contained true \
            -p:PublishSingleFile=true -p:IncludeNativeLibrariesForSelfExtract=true \
            -p:EnableCompressionInSingleFile=true -p:DebugType=None -p:DebugSymbols=false \
            -p:VersionPrefix="$VER" -o publish/linux-x64
          mv -f publish/linux-x64/Downloader.Desktop publish/linux-x64/Downloader || true
          chmod +x publish/linux-x64/Downloader || true

      - name: Build snap
        id: snapcraft
        uses: snapcore/action-build@v1

      - name: Upload snap artifact
        uses: actions/upload-artifact@v6
        with:
          name: downloader-snap
          path: "*.snap"

      - name: Attach snap to the GitHub Release
        if: startsWith(github.ref, 'refs/tags/')
        continue-on-error: true   # store publish below is what matters; don't fail the run on attach
        uses: softprops/action-gh-release@v3
        with:
          files: "*.snap"
          # No generate_release_notes here: it races release.yml's create ("tag_name already_exists").
          # The release.yml `notes` job fills notes once; scripts/release.sh sets curated notes.

      - name: Publish to the Snap Store
        if: ${{ always() && startsWith(github.ref, 'refs/tags/') && env.SNAPCRAFT_STORE_CREDENTIALS != '' }}
        uses: snapcore/action-publish@v1
        env:
          SNAPCRAFT_STORE_CREDENTIALS: ${{ secrets.SNAPCRAFT_STORE_CREDENTIALS }}
        with:
          snap: ${{ steps.snapcraft.outputs.snap }}
          release: stable