# Flatpak manifest for the native punktfunk Linux client (crate punktfunk-client-linux,
# binary `punktfunk-client`). Built into a single-file `.flatpak` bundle and published to
# Gitea's generic package registry (see .gitea/workflows/flatpak.yml + packaging/flatpak/README.md).
#
# Why flatpak for the CLIENT (the host stays an RPM/deb — see packaging/README.md "Why not
# Flatpak"): on SteamOS the Steam Deck's /usr is read-only and image-based, so a bare
# `punktfunk-client` binary in ~/.local/bin can't bring its own libadwaita / SDL3 (both
# MISSING from the SteamOS system) — but flatpak is the Deck's native, update-survivable app
# path (the user already runs Moonlight + chiaki-ng as flatpaks). Unlike the host, the client
# is sandbox-friendly: it only needs the GPU render node, the host PipeWire socket, the
# network, Wayland, hidraw for DualSense, and its config dir — all expressible as finish-args.
#
# Runtime: GNOME 50 ships GTK 4.20 and libadwaita 1.8 — both far exceed the crate floors
# (gtk4 0.11 "v4_16", libadwaita 0.9 "v1_5"). GNOME 50 is built on freedesktop-sdk 25.08, so
# `org.freedesktop.Sdk.Extension.rust-stable` resolves to //25.08 (rustc 1.96 — the GTK4 dep
# chain, e.g. pango-sys 0.22, needs >= 1.92, which the older GNOME-48/24.08 rust-stable at 1.89
# could NOT satisfy). GNOME 50 is also a *supported* runtime (GNOME 48 went EOL in March 2026).
# libopus and the PipeWire client lib are in the freedesktop base; SDL3 is NOT, so it is built
# from source as a bundled module.
#
# HEVC decode: the base runtime's libavcodec is a stripped build (no encumbered codecs). The
# freedesktop runtime declares `org.freedesktop.Platform.codecs-extra` as a built-in extension
# point (directory lib/x86_64-linux-gnu/codecs-extra, add-ld-path lib, auto-downloaded with the
# runtime), whose full libavcodec.so.61 transparently shadows the base one at runtime. So HEVC
# (software + VAAPI) works with NO app-side codec extension to declare — we just build against
# the SDK's linkable libavcodec.so.61 and let the runtime swap in the capable build.
app-id: io.unom.Punktfunk
runtime: org.gnome.Platform
runtime-version: '50'
sdk: org.gnome.Sdk
# Build-time SDK extensions:
#  - rust-stable: cargo/rustc 1.96 + the bundled mold linker (/usr/lib/sdk/rust-stable/bin).
#  - llvm20: provides libclang (/usr/lib/sdk/llvm20/lib), which bindgen needs — ffmpeg-sys-next
#    and sdl3-sys generate their FFI bindings via bindgen at build time. The base SDK ships no
#    clang/libclang, so without this the build panics ("Unable to find libclang").
# Both are added to PATH / LIBCLANG_PATH in build-options below.
sdk-extensions:
  - org.freedesktop.Sdk.Extension.rust-stable
  - org.freedesktop.Sdk.Extension.llvm20
command: punktfunk-client

cleanup:
  - /include
  - /lib/pkgconfig
  - /lib/cmake
  - /share/aclocal
  - /man
  - /share/man
  - '*.a'
  - '*.la'

finish-args:
  # --- display ---
  - --socket=wayland                 # GTK4 native Wayland window (the client is Wayland-first)
  - --socket=fallback-x11            # Xwayland fallback when no Wayland socket is exposed
  - --share=ipc                      # required alongside X11 for shared-memory surfaces
  # --- GPU + all input devices ---
  # --device=all (not just --device=dri): covers the GPU render node (VAAPI HEVC decode + GL),
  # evdev joysticks, AND the hidraw CHAR devices SDL3's HIDAPI needs for DualSense touchpad/
  # motion/adaptive-triggers/lightbar. flatpak cannot bind individual /dev/hidrawN via
  # --filesystem (they are char devices — "unsupported type 0o20000"), and there is no granular
  # --device=hidraw; --device=all is what game/emulator flatpaks (RetroArch, Dolphin) use. We
  # self-host via the Gitea generic registry — NOT Flathub — so its --device=all review rule
  # does not apply.
  - --device=all
  - --filesystem=/run/udev:ro        # SDL/HIDAPI enumerates devices via udev
  # --- audio: PipeWire via its PulseAudio shim — covers playback AND mic uplink. SteamOS
  #     exposes PipeWire-pulse here; --socket=pulseaudio is the portable arg Moonlight/chiaki
  #     also use on the Deck (a bare --socket=pipewire would also need the camera/portal dance
  #     for capture; the pulse shim gives mic + speaker in one grant). ---
  - --socket=pulseaudio
  # --- network: QUIC control + UDP data plane + mDNS discovery (_punktfunk._udp) ---
  - --share=network
  # --- persistent client identity / pairing store (shared with punktfunk-probe) ---
  - --filesystem=~/.config/punktfunk:create   # client-{cert,key}.pem, known-hosts, settings

build-options:
  append-path: /usr/lib/sdk/rust-stable/bin:/usr/lib/sdk/llvm20/bin
  # The rust build resolves everything via pkg-config: gtk4/libadwaita/pipewire/opus AND a
  # linkable libavcodec.so.61 from org.gnome.Sdk//50 (the multiarch /usr dir), plus the bundled
  # SDL3's .pc from /app. (At runtime the codecs-extra extension swaps in the HEVC-capable
  # libavcodec — see the header.)
  env:
    PKG_CONFIG_PATH: /app/lib/pkgconfig:/usr/lib/x86_64-linux-gnu/pkgconfig:/usr/lib/pkgconfig
    # bindgen (ffmpeg-sys-next / sdl3-sys) loads libclang from the llvm20 extension.
    LIBCLANG_PATH: /usr/lib/sdk/llvm20/lib
    # mold (shipped in rust-stable) speeds the ~450-crate link on the Deck APU.
    RUSTFLAGS: -C link-arg=-fuse-ld=mold

modules:
  # ---------------------------------------------------------------------------------------
  # SDL3 — NOT provided as a linkable libSDL3.so.0 by org.gnome.Platform/freedesktop-sdk
  # 25.08, and there is no SDL3 recipe in flathub/shared-modules. Build it from source.
  # Pinned to 3.4.10 to match the crate exactly: sdl3-sys is `0.6.6+SDL-3.4.10`, i.e. its
  # bindings target SDL 3.4.10 — building an older SDL risks missing symbols at link time.
  # HIDAPI is enabled (DualSense touchpad/motion/triggers/lightbar over hidraw).
  # ---------------------------------------------------------------------------------------
  - name: sdl3
    buildsystem: cmake-ninja
    config-opts:
      - -DCMAKE_BUILD_TYPE=Release
      - -DSDL_SHARED=ON
      - -DSDL_STATIC=OFF
      - -DSDL_HIDAPI=ON          # DualSense full fidelity over hidraw
      - -DSDL_TEST_LIBRARY=OFF
      - -DSDL_EXAMPLES=OFF
    sources:
      - type: archive
        url: https://github.com/libsdl-org/SDL/releases/download/release-3.4.10/SDL3-3.4.10.tar.gz
        # `sha256sum SDL3-3.4.10.tar.gz` (verified 2026-06-15). Bump url + sha together.
        sha256: 12b34280415ec8418c864408b93d008a20a6530687ee613d60bfbd20411f2785
        x-checker-data:
          type: anitya
          project-id: 4974
          stable-only: true
          url-template: https://github.com/libsdl-org/SDL/releases/download/release-$version/SDL3-$version.tar.gz
    cleanup:
      - /bin
      - /include
      - /lib/cmake
      - /lib/pkgconfig

  # ---------------------------------------------------------------------------------------
  # The client. cargo-sources.json is the GENERATED offline crate cache:
  #   python3 flatpak-cargo-generator.py Cargo.lock -o packaging/flatpak/cargo-sources.json
  # (run from the repo root; the CI step does exactly this). With it present the build is fully
  # offline (CARGO_NET_OFFLINE). For quick LOCAL iteration WITHOUT regenerating it, drop the
  # cargo-sources.json source and pass  --build-args=--share=network  to flatpak-builder
  # (non-reproducible; cargo fetches from crates.io during the build).
  # ---------------------------------------------------------------------------------------
  - name: punktfunk-client
    buildsystem: simple
    build-options:
      env:
        CARGO_HOME: /run/build/punktfunk-client/cargo
        CARGO_NET_OFFLINE: 'true'
    build-commands:
      # Drop the Windows client from the workspace before building. It pins windows-rs as a
      # git dependency (cfg(windows)-gated, but cargo resolves it for the whole workspace
      # regardless of target), and that git source is deliberately NOT vendored into
      # cargo-sources.json — see packaging/flatpak/prune-windows-lock.py, which strips it so
      # flatpak-builder doesn't full-clone the multi-GB windows-rs repo. Without removing the
      # member, `cargo --offline` would try to load the un-vendored windows-rs source and fail
      # ("can't checkout ... you are in the offline mode"). The flatpak never compiles the
      # Windows client; this edits only the sandbox copy of Cargo.toml. (No --locked: the lock
      # no longer matches the reduced member set; --offline still pins every crate to the
      # vendored cargo-sources.json, so the build stays reproducible.)
      - sed -i '\#"clients/windows",#d' Cargo.toml
      - cargo --offline build --release -p punktfunk-client-linux
      - install -Dm0755 target/release/punktfunk-client ${FLATPAK_DEST}/bin/punktfunk-client
      # Desktop entry (renamed to the app id; Exec is the in-sandbox binary).
      - install -Dm0644 packaging/flatpak/io.unom.Punktfunk.desktop
          ${FLATPAK_DEST}/share/applications/io.unom.Punktfunk.desktop
      # AppStream metainfo (required for a well-formed flatpak / Software listings).
      - install -Dm0644 packaging/flatpak/io.unom.Punktfunk.metainfo.xml
          ${FLATPAK_DEST}/share/metainfo/io.unom.Punktfunk.metainfo.xml
      # Scalable icon named for the app id (GNOME runtime renders SVG via librsvg).
      - install -Dm0644 packaging/flatpak/io.unom.Punktfunk.svg
          ${FLATPAK_DEST}/share/icons/hicolor/scalable/apps/io.unom.Punktfunk.svg
    sources:
      # The repo checkout. For a Flathub/published build, replace with a pinned git source:
      #   - type: git
      #     url: https://git.unom.io/unom/punktfunk
      #     tag: vX.Y.Z
      #     commit: <sha>
      # For ON-DECK / CI builds we build the checked-out working tree in place:
      - type: dir
        path: ../..
      # Generated offline crate cache (see the comment block above). Remove for --share=network.
      - cargo-sources.json
