# Tauri desktop (Linux) build — SEPARATE from ci.yml on purpose: this is a heavy
# Rust + AppImage build (~20-40 min) that should NOT run on backend/frontend-only
# pushes. Scoped to desktop/** (+ this file). Produces the .deb and .AppImage.
#
# Toolchain comes from the ci-tauri image (Rust + Node + WebKitGTK 4.1 + tauri-cli);
# runs-on is just a registered scheduling label (Label Model B), not a per-purpose
# runner. The frontend is built here because tauri's generate_context! embeds it.
name: Desktop (Tauri)

on:
  push:
    branches: [dev, main]
    tags: ["v*"]
    paths:
      - "desktop/**"
      # The desktop app embeds the frontend, and the data seam / Tauri bridge are
      # what the offline core rides on — rebuild the app when those change too.
      - "frontend/src/adapters/**"
      - "frontend/src/desktop/**"
      - ".forgejo/workflows/desktop.yml"
  workflow_dispatch:

concurrency:
  group: desktop-${{ github.ref }}
  cancel-in-progress: ${{ !startsWith(github.ref, 'refs/tags/') }}

permissions:
  # write (not read) so the tag build can publish a Release with the bundles
  # attached (the "Publish release" step). Read is enough for dev/main builds,
  # but the token scope is per-workflow, so it's set once here.
  contents: write

jobs:
  build:
    name: Tauri desktop (Linux)
    if: github.ref == 'refs/heads/dev' || github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/v')
    runs-on: python-ci
    container:
      image: git.fabledsword.com/bvandeusen/ci-tauri:1.97
    env:
      # AppImage tooling (linuxdeploy) FUSE-mounts itself by default; CI containers
      # have no /dev/fuse, so tell it to extract-and-run instead. Without this the
      # AppImage bundle step fails with a FUSE error.
      APPIMAGE_EXTRACT_AND_RUN: "1"
    steps:
      - uses: actions/checkout@v6

      # tauri's generate_context! embeds the built frontend at compile time, so the
      # frontend must exist before any cargo compile (clippy/test/build), not just
      # at bundle time.
      - name: Build the shared frontend
        run: npm ci && npm run build
        working-directory: frontend

      - name: Rust format check
        run: cargo fmt --check
        working-directory: desktop/src-tauri

      - name: Clippy
        run: cargo clippy --all-targets -- -D warnings
        working-directory: desktop/src-tauri

      - name: Test
        run: cargo test
        working-directory: desktop/src-tauri

      # Frontend already built above; skip the beforeBuildCommand rebuild.
      - name: Tauri build (deb + AppImage)
        run: cargo tauri build --config '{"build":{"beforeBuildCommand":""}}'
        working-directory: desktop/src-tauri

      # Tauri's AppImage bundles the build host's graphics/display libs
      # (libEGL/libGL/libdrm/libgbm/libwayland-*), which clash with end-user GPU
      # drivers and abort to a black window (EGL_BAD_PARAMETER, issue 2021).
      # Strip that host-coupled stack so the app uses the running system's
      # graphics libs; webkit/gtk stay bundled. Runs from the repo root (the
      # script resolves its own paths), overwriting the AppImage in place.
      - name: De-bundle AppImage graphics libraries
        run: bash desktop/packaging/appimage/debundle-graphics.sh

      # install.sh hands the .deb to every Debian/Ubuntu user, so the package's
      # Depends must be right BEFORE a release exists. Prints the generated
      # control file and cross-checks it against what the ELF actually needs
      # (dpkg-shlibdeps).
      #
      # We deliberately do NOT set bundle.linux.deb.depends: run 2872 showed
      # tauri already infers exactly libwebkit2gtk-4.1-0 + libgtk-3-0, so
      # declaring them again only produced a control file listing each twice.
      # This step is the guard instead — if tauri's inference ever stops
      # covering what the binary links, the build fails here.
      - name: Verify the .deb
        run: bash desktop/packaging/deb/verify.sh

      # Repackage the binary just built into a native pacman package, so Arch /
      # CachyOS gets a real native install from install.sh instead of the AppImage
      # fallback — without a second Rust build or an Arch CI image. Safe because
      # nothing is bundled: the binary resolves webkit/gtk by soname, which is
      # identical across the two distros. Can't be pacman-tested here (Debian
      # runner), so the step logs .PKGINFO + the full file listing for audit.
      - name: Package for Arch (pacman)
        run: bash desktop/packaging/arch/package-prebuilt.sh

      # Make the built .deb + .AppImage downloadable from the run (for hand-testing).
      # continue-on-error: the Forgejo artifact backend may not be configured yet; a
      # failed upload must not fail the build itself.
      # Forgejo doesn't support the v4 artifact protocol (@actions/artifact v2+),
      # so pin v3, which uses the older protocol the instance accepts.
      - name: Upload bundles
        continue-on-error: true
        uses: actions/upload-artifact@v3
        with:
          name: thoughtsync-linux
          path: |
            desktop/src-tauri/target/release/bundle/appimage/*.AppImage
            desktop/src-tauri/target/release/bundle/deb/*.deb
            desktop/src-tauri/target/release/bundle/arch/*.pkg.tar.*
          if-no-files-found: warn

      # Tag builds only: publish a real, versioned Fabled-Git Release with the
      # AppImage + .deb attached — the stable fetch target the install script and
      # the in-app updater consume (Actions artifacts above are ephemeral/test).
      # Cutting the tag is the operator's action (rule 2); this only publishes a
      # Release for a tag that already exists. Dormant on dev/main pushes.
      - name: Publish release
        if: startsWith(github.ref, 'refs/tags/v')
        env:
          GITHUB_TOKEN: ${{ github.token }}
        run: bash desktop/packaging/publish-release.sh

  # Windows installer, CROSS-COMPILED from Linux — there is no Windows build host.
  # A Windows container can't run on a Linux host (containers share the host
  # kernel), so cross-compiling is the only route without Windows hardware:
  # cargo-xwin + LLVM's lld-link + makensis are Linux programs that emit Windows
  # PE output. That toolchain is why this needs its own image rather than ci-tauri.
  #
  # NSIS only. `.msi` needs WiX v3, which is a Windows program — Tauri: ".msi
  # installers can only be created on Windows". It returns if a Windows node does.
  #
  # A separate job, so a Windows-side failure never blocks the Linux artifacts that
  # are the primary product today. Tauri calls this path "not tested as much" and a
  # last resort, and nothing here can LAUNCH a Windows binary — green means it
  # built, not that it runs. A real-machine check stays mandatory before trusting it.
  windows:
    name: Windows installer (cross-compiled)
    if: github.ref == 'refs/heads/dev' || github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/v')
    runs-on: python-ci
    container:
      image: git.fabledsword.com/bvandeusen/ci-tauri-win:1.97
    steps:
      - uses: actions/checkout@v6

      # Same reason as the Linux job: generate_context! embeds the built frontend
      # at compile time, so it must exist before cargo runs.
      - name: Build the shared frontend
        run: npm ci && npm run build
        working-directory: frontend

      # --runner cargo-xwin swaps cargo for the cross-compiling driver (it supplies
      # the MSVC CRT/SDK, pre-warmed into the image, and links with lld-link).
      # Frontend already built above; skip the beforeBuildCommand rebuild.
      - name: Tauri build (NSIS installer)
        run: |
          cargo tauri build \
            --runner cargo-xwin \
            --target x86_64-pc-windows-msvc \
            --bundles nsis \
            --config '{"build":{"beforeBuildCommand":""}}'
        working-directory: desktop/src-tauri

      - name: Upload installer
        continue-on-error: true
        uses: actions/upload-artifact@v3
        with:
          name: thoughtsync-windows
          path: desktop/src-tauri/target/x86_64-pc-windows-msvc/release/bundle/nsis/*.exe
          if-no-files-found: warn

      # Publishes to the SAME release as the Linux job. Safe to run twice: the
      # script reuses an existing release (409) and nullglob means each job uploads
      # only the bundles present in its own workspace.
      - name: Publish release
        if: startsWith(github.ref, 'refs/tags/v')
        env:
          GITHUB_TOKEN: ${{ github.token }}
        run: bash desktop/packaging/publish-release.sh