#!/usr/bin/env bash
# gopher64-netplay review gate (issue #16)
#
# Documented gate command (from a clean origin/main checkout):
#   ./scripts/gate.sh
#
# What it does:
#   1. `git submodule update --init --recursive` (parallel-rdp,
#      retroachievements/rcheevos, src/compat/sse2neon) — required by
#      build.rs.
#   2. Wires the review box's user-local provisioning onto PATH/env (only
#      when present; a no-op on hosts with system toolchains):
#        - clang/clang++ from the local LLVM-18 root  (build.rs requires
#          clang for `-flto=thin`)
#        - a real pkgconf + fontconfig/X11 dev pc files (the box has no
#          system pkg-config/fontconfig and no sudo)
#        - the provisioned cmake/ninja's OWN lib root on LD_LIBRARY_PATH
#          (without it cmake dies with exit 127: librhash/libuv/libjsoncpp
#          not found)
#   3. Runs the gate, as three distinguishable steps:
#        a. `cargo check --all-targets` — TYPE-check everything, tests
#           included (compile-only; the historical main blocker)
#        b. `cargo test --no-run`      — LINK every test binary (a test
#           that type-checks but cannot link is still a broken gate)
#        c. `cargo test --lib`         — EXECUTE the headless library unit
#           tests (netplay state sync etc.; see docs/build-gate.md)
#
# On AVX2-capable hardware, opt into the optimised CPU target:
#   RUSTFLAGS="-C target-cpu=x86-64-v3" ./scripts/gate.sh
# (RUSTFLAGS REPLACES the config's rustflags for the whole invocation, so
# carry any other flags you need.)
set -euo pipefail
REPO_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
cd "$REPO_ROOT"

git submodule update --init --recursive

# --- Review-box provisioning ----------------------------------------------
LLVM_BIN="$HOME/local-tools/root/usr/lib/llvm-18/bin"
LLVM_BIN2="$HOME/local-tools/root/usr/bin"
FCPC="$HOME/.local/bin-fc/pkg-config"
FCROOT="$HOME/.local/fcroot/usr"
PC_DIR="$FCROOT/lib/x86_64-linux-gnu/pkgconfig"

if [ -d "$LLVM_BIN" ]; then
    export PATH="$LLVM_BIN:$PATH"          # clang / clang++ (build.rs needs clang)
fi
if [ -d "$LLVM_BIN2" ]; then
    export PATH="$LLVM_BIN2:$PATH"         # cmake, ninja, pkgconf, wayland-scanner
    # cmake/ninja from this root link against librhash/libuv/libjsoncpp that
    # ship in the SAME root (`usr/lib/x86_64-linux-gnu`); without that dir on
    # LD_LIBRARY_PATH they die with exit 127 and cmake-rs reports it as
    # "is `cmake` not installed?" — the issue #16 review bounce.
    export LD_LIBRARY_PATH="$HOME/local-tools/root/usr/lib/x86_64-linux-gnu${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}"
fi
if [ -x "$FCPC" ] && [ -d "$PC_DIR" ]; then
    export PATH="$(dirname "$FCPC"):$PATH" # real pkg-config (not the pypi shim)
    export PKG_CONFIG_PATH="$PC_DIR"
    # SDL's cmake resolves X11 via CMake's classic FindX11 module (path
    # scan), not through pkg-config — point those scans at the root too.
    export CMAKE_INCLUDE_PATH="$FCROOT/include${CMAKE_INCLUDE_PATH:+:$CMAKE_INCLUDE_PATH}"
    export CMAKE_LIBRARY_PATH="$FCROOT/lib/x86_64-linux-gnu${CMAKE_LIBRARY_PATH:+:$CMAKE_LIBRARY_PATH}"
    export LD_LIBRARY_PATH="$FCROOT/lib/x86_64-linux-gnu${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}"
fi
if [ -d "$HOME/local-tools/root/usr/lib/llvm-18/lib" ]; then
    export LIBCLANG_PATH="$HOME/local-tools/root/usr/lib/llvm-18/lib" # bindgen/clang-sys
    export LD_LIBRARY_PATH="$HOME/local-tools/root/usr/lib/llvm-18/lib${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}"
fi

# --- Gate: type-check, then link tests, then run the headless lib tests ----
echo "GATE step 1/3: cargo check --all-targets"
cargo check --all-targets

echo "GATE step 2/3: cargo test --no-run"
cargo test --no-run

echo "GATE step 3/3: cargo test --lib"

# Issue #23: libtest runs each test on a thread with the 2 MiB default stack,
# but debug builds of Device::new() materialise ~300 KiB of struct literals on
# the stack per construction, so any Device-constructing unit test overflows
# and aborts the WHOLE test binary. Give the test threads the same 8 MiB the
# project already standardises on for the main thread (.cargo/config.toml
# /STACK:8388608, Windows). Tests should additionally route their bodies
# through test_util::with_big_stack so they also pass under a bare
# `cargo test --lib` (see src/test_util.rs).
export RUST_MIN_STACK=8388608
cargo test --lib

echo "GATE_OK"