# gearlever-bin - prebuilt package of https://github.com/mijorus/gearlever
# ("Gear Lever", a GTK4 + LibAdwaita AppImage manager written in Python).
#
# Upstream only publishes a Flatpak bundle, so build_artifact() builds the
# app from the release tarball and the resulting install tree is published as
# a GitHub release asset of this repository, which the PKGBUILD then uses.

UPSTREAM_REPO="mijorus/gearlever"

# Installed in CI (pacman) before build_artifact runs.
BUILD_DEPS=(meson ninja glib2 glib2-devel python gettext python-pip)

latest_version() {
  # gh instead of curl: unauthenticated GitHub API calls are rate-limited on
  # shared CI runner IPs.
  gh api "repos/$UPSTREAM_REPO/releases/latest" --jq '.tag_name' | sed 's/^v//'
}

# build_artifact <version> <output-file>
build_artifact() {
  local ver="$1" outfile="$2"
  local workdir destdir srctree
  workdir="$(mktemp -d)"
  destdir="$(mktemp -d)"

  curl -sfL "https://github.com/$UPSTREAM_REPO/archive/refs/tags/$ver.tar.gz" | tar -xz -C "$workdir"
  srctree="$workdir/gearlever-$ver"

  # Arch's 7zip package ships /usr/bin/7z, not the 7zz binary the Flatpak
  # bundles, and the ELF-offset helper lives in /usr/lib/gearlever instead of
  # somewhere on $PATH.
  sed -i -e 's/7zz/7z/g' \
         -e 's|get_appimage_offset|/usr/lib/gearlever/get_appimage_offset|g' \
      "$srctree/src/providers/AppImageProvider.py"

  meson setup "$workdir/build" "$srctree" --prefix=/usr --buildtype=release
  meson install -C "$workdir/build" --destdir "$destdir"

  install -Dm755 "$srctree/build-aux/get_appimage_offset.sh" \
    "$destdir/usr/lib/gearlever/get_appimage_offset"

  # src/meson.build uses install_subdir('.'), which drags the meson.build
  # files themselves into the install tree.
  find "$destdir" -name meson.build -delete

  # ftputil and desktop-entry-lib are AUR-only; bundle them (pure python)
  # into the app's module dir, which the launcher puts on sys.path. Versions
  # come from upstream's requirements.txt pins.
  grep -E '^(ftputil|desktop-entry-lib)' "$srctree/requirements.txt" > "$workdir/bundle-reqs.txt"
  [[ "$(wc -l < "$workdir/bundle-reqs.txt")" -eq 2 ]] || { echo "expected 2 pinned bundle deps in requirements.txt" >&2; return 1; }
  python -m pip install --isolated --no-deps --target "$destdir/usr/share/gearlever" \
    -r "$workdir/bundle-reqs.txt"
  rm -rf "$destdir/usr/share/gearlever/bin"

  # These caches are generated by pacman hooks; shipping them would cause
  # file conflicts on install.
  rm -f "$destdir/usr/share/glib-2.0/schemas/gschemas.compiled" \
        "$destdir/usr/share/applications/mimeinfo.cache" \
        "$destdir/usr/share/icons/hicolor/icon-theme.cache"

  tar --zstd --sort=name --owner=0 --group=0 --numeric-owner --mtime='@0' \
      -cf "$outfile" -C "$destdir" usr

  rm -rf "$workdir" "$destdir"
}