# Maintainer: unom <noreply@anthropic.com>
#
# Arch Linux / SteamOS split package: punktfunk-host (the gaming-rig HOST, NVENC) and
# punktfunk-client (the GTK4 couch/Deck CLIENT). Mirrors the rpm subpackages
# (packaging/rpm/punktfunk.spec) and the two deb build scripts. On a Steam Deck you want
# `punktfunk-client` (it's what the Decky plugin launches); on a gaming rig, `punktfunk-host`.
#
# Two build modes:
#   - AUR / standalone:  makepkg in this dir (fetches the git tag below).
#   - In-tree / CI:       PF_SRCDIR=$(git rev-parse --show-toplevel) makepkg --holdver
#                         (builds the working tree instead of the tagged source — see build()).
#
# IMPORTANT: host encode is NVENC-only (crates/punktfunk-host/src/encode/linux.rs) — functional on
# NVIDIA hosts; an AMD Deck-as-HOST needs a VAAPI backend first. The CLIENT decodes via VAAPI
# (AMD/Intel, incl. the Deck) with a software fallback, so it works everywhere. See README.md.
pkgbase=punktfunk
pkgname=('punktfunk-host' 'punktfunk-client')
pkgver=0.0.1
pkgrel=1
arch=('x86_64')
url="https://git.unom.io/unom/punktfunk"
license=('MIT OR Apache-2.0')

# All build deps for both crates (Arch runtime packages ship their own headers, so these cover
# build + link). aws-lc/ring need clang+cmake; nasm is for asm.
makedepends=('rust' 'cargo' 'clang' 'cmake' 'nasm' 'pkgconf' 'git'
             'gtk4' 'libadwaita' 'sdl3' 'ffmpeg' 'pipewire' 'wayland' 'libxkbcommon' 'opus' 'libei')

# AUR source (a tagged release). For an in-tree CI build, set PF_SRCDIR to the repo root and
# build() uses it instead; see the README.
source=("git+https://git.unom.io/unom/punktfunk.git#tag=v${pkgver}")
sha256sums=('SKIP')

_repo() { printf '%s' "${PF_SRCDIR:-$srcdir/punktfunk}"; }

build() {
  cd "$(_repo)"
  export RUSTUP_TOOLCHAIN=stable CARGO_TARGET_DIR="$srcdir/target"
  # The host's zero-copy FFI link-needs libcuda at build time; nvidia-utils provides it on an
  # NVIDIA builder. On a GPU-less builder symlink the CUDA stub into the link path first (same
  # caveat the RPM documents): ln -s "$(find / -name libcuda.so -path '*stubs*'|head -1)" /usr/lib/
  cargo build --release --locked -p punktfunk-host -p punktfunk-client-linux
}

package_punktfunk-host() {
  pkgdesc="Low-latency desktop/game streaming HOST (Moonlight-compatible + punktfunk/1)"
  # NVENC + GPU EGL/CUDA come from the NVIDIA driver (nvidia-utils) — kept an optdepend, never a
  # hard dep, exactly as the RPM (__requires_exclude libcuda) and deb (shlibdeps filter) do.
  depends=('ffmpeg' 'pipewire' 'pipewire-pulse' 'wireplumber' 'opus' 'libei'
           'mesa' 'libglvnd' 'libxkbcommon' 'wayland')
  optdepends=('nvidia-utils: NVENC hardware encode + GPU EGL/CUDA zero-copy (REQUIRED to encode on NVIDIA)'
              'gamescope: per-session nested compositor backend (no desktop login needed) — needs >=3.16.22'
              'kwin: stream a KDE Plasma desktop (kwin VirtualDisplay backend)'
              'mutter: stream a GNOME desktop (Mutter RecordVirtual backend)'
              'sway: stream a wlroots desktop (Sway VirtualDisplay backend)'
              'xdg-desktop-portal-kde: portal for the headless KDE session helper'
              'xdg-desktop-portal-wlr: portal for the headless Sway session helper')
  install=punktfunk-host.install
  local R; R="$(_repo)"; local T="$srcdir/target/release"

  install -Dm0755 "$T/punktfunk-host"                 "$pkgdir/usr/bin/punktfunk-host"
  # /dev/uinput + /dev/uhid -> input group (virtual gamepads + DualSense UHID)
  install -Dm0644 "$R/scripts/60-punktfunk.rules"     "$pkgdir/usr/lib/udev/rules.d/60-punktfunk.rules"
  # 32 MB UDP socket buffers (send-side headroom at high bitrate)
  install -Dm0644 "$R/scripts/99-punktfunk-net.conf"  "$pkgdir/usr/lib/sysctl.d/99-punktfunk-net.conf"
  # systemd USER units (the host runs in the graphical session, not as root); repoint ExecStart.
  install -Dm0644 "$R/scripts/punktfunk-host.service" "$pkgdir/usr/lib/systemd/user/punktfunk-host.service"
  sed -i 's#%h/punktfunk/target/release/punktfunk-host#/usr/bin/punktfunk-host#' \
    "$pkgdir/usr/lib/systemd/user/punktfunk-host.service"
  install -Dm0644 "$R/scripts/punktfunk-kde-session.service" "$pkgdir/usr/lib/systemd/user/punktfunk-kde-session.service"
  sed -i 's#%h/punktfunk/scripts/headless/run-headless-kde.sh#/usr/share/punktfunk/headless/run-headless-kde.sh#' \
    "$pkgdir/usr/lib/systemd/user/punktfunk-kde-session.service"
  # headless session helpers + env templates + OpenAPI doc
  install -Dm0755 "$R/scripts/headless/run-headless-kde.sh"  "$pkgdir/usr/share/punktfunk/headless/run-headless-kde.sh"
  install -Dm0755 "$R/scripts/headless/run-headless-sway.sh" "$pkgdir/usr/share/punktfunk/headless/run-headless-sway.sh"
  install -Dm0644 "$R/scripts/headless/kde-authorized"       "$pkgdir/usr/share/punktfunk/headless/kde-authorized"
  install -Dm0644 "$R/scripts/headless/punktfunk-sink.conf"  "$pkgdir/usr/share/punktfunk/headless/punktfunk-sink.conf"
  install -Dm0644 "$R/scripts/host.env.example"              "$pkgdir/usr/share/punktfunk/host.env.example"
  install -Dm0644 "$R/packaging/bazzite/host.env"            "$pkgdir/usr/share/punktfunk/host.env.bazzite"
  install -Dm0644 "$R/packaging/kde/host.env"                "$pkgdir/usr/share/punktfunk/host.env.kde"
  install -Dm0644 "$R/docs/api/openapi.json"                 "$pkgdir/usr/share/punktfunk/openapi.json"
  install -Dm0644 "$R/LICENSE-MIT"    "$pkgdir/usr/share/licenses/punktfunk-host/LICENSE-MIT"
  install -Dm0644 "$R/LICENSE-APACHE" "$pkgdir/usr/share/licenses/punktfunk-host/LICENSE-APACHE"
  install -Dm0644 "$R/README.md"      "$pkgdir/usr/share/doc/punktfunk-host/README.md"
}

package_punktfunk-client() {
  pkgdesc="Low-latency desktop/game streaming CLIENT (GTK4) — the couch/Deck side"
  # The GTK4/libadwaita client: SDL3 gamepads, FFmpeg (VAAPI) decode, PipeWire audio/mic.
  depends=('gtk4' 'libadwaita' 'sdl3' 'ffmpeg' 'pipewire' 'wireplumber' 'pipewire-pulse'
           'opus' 'libglvnd')
  optdepends=('libva-mesa-driver: VAAPI hardware decode on AMD (incl. Steam Deck); software fallback otherwise'
              'intel-media-driver: VAAPI hardware decode on Intel'
              'gamescope: run the client fullscreen in a Gaming-Mode session')
  install=punktfunk-client.install
  local R; R="$(_repo)"; local T="$srcdir/target/release"

  install -Dm0755 "$T/punktfunk-client" "$pkgdir/usr/bin/punktfunk-client"
  install -Dm0644 "$R/packaging/linux/io.unom.Punktfunk.desktop" \
    "$pkgdir/usr/share/applications/io.unom.Punktfunk.desktop"
  # DualSense hidraw access (full pad fidelity through SDL's HIDAPI driver).
  install -Dm0644 "$R/scripts/70-punktfunk-client.rules" \
    "$pkgdir/usr/lib/udev/rules.d/70-punktfunk-client.rules"
  # 32 MB UDP recv buffer (so high-bitrate streams don't overflow the kernel socket buffer).
  install -Dm0644 "$R/scripts/99-punktfunk-client-net.conf" \
    "$pkgdir/usr/lib/sysctl.d/99-punktfunk-client-net.conf"
  install -Dm0644 "$R/LICENSE-MIT"    "$pkgdir/usr/share/licenses/punktfunk-client/LICENSE-MIT"
  install -Dm0644 "$R/LICENSE-APACHE" "$pkgdir/usr/share/licenses/punktfunk-client/LICENSE-APACHE"
}