#!/usr/bin/env bash
# Linux host: cross-build the Windows x86_64 release (mingw-w64, UCRT, static).
#   scripts/bootstrap_windows.sh [repo-dir]
# With Nix the toolchain comes from shell-win.nix; otherwise $MINGW_HOST-gcc
# (default x86_64-w64-mingw32; UCRT flavour, with winpthreads), cmake, ninja,
# git and perl must be installed. CST_WIN_CFLAGS adds C flags (CI: -Werror).
# Output: dist/windows-x86_64/ and dist/cst-agent-VERSION-windows-x86_64.zip
set -euo pipefail

REPO_URL="${CST_AGENT_REPO:-https://git.whcself.xyz/WHC/CST-agent.git}"
DIR="${1:-}"
if [[ -z "$DIR" ]]; then
  if [[ -f CMakeLists.txt && -d src ]]; then
    DIR="$(pwd)"
  else
    DIR="CST-agent"
  fi
fi
if [[ ! -f "$DIR/CMakeLists.txt" ]]; then
  echo "==> git clone $REPO_URL -> $DIR"
  git clone "$REPO_URL" "$DIR"
fi
cd "$DIR"

H="${MINGW_HOST:-x86_64-w64-mingw32}"
if ! command -v "$H-gcc" >/dev/null && [[ -z "${IN_NIX_SHELL:-}" ]] &&
  command -v nix-shell >/dev/null; then
  exec nix-shell shell-win.nix --run "$(printf '%q ' "$0" "$PWD")"
fi

need() { command -v "$1" >/dev/null || { echo "missing $1 (mingw-w64 UCRT gcc, cmake, ninja, git, perl)" >&2; exit 1; }; }
export MINGW_HOST="$H"
need git; need cmake; need ninja; need perl; need "$H-gcc"
if ! printf '#include <stdio.h>\n' | "$H-gcc" -dM -E - | grep -qw _UCRT; then
  echo "$H-gcc targets msvcrt; the UTF-8 manifest needs a UCRT toolchain" >&2
  exit 1
fi

[[ -f third_party/prefix-mingw/lib/libcurl.a ]] || scripts/build_third_party_mingw.sh curl
[[ -f third_party/prefix-mingw/lib/libncursesw.a ]] || scripts/build_third_party_mingw.sh ncurses
[[ -f third_party/busybox/busybox.exe ]] || scripts/build_third_party_mingw.sh busybox-w32

echo "==> cmake (Windows, TUI)"
cmake -S . -B build-win-tui -G Ninja \
  -DCMAKE_TOOLCHAIN_FILE=cmake/mingw-w64-x86_64.cmake \
  -DCMAKE_BUILD_TYPE=Release -DCST_BUILD_TUI=ON \
  -DCMAKE_C_FLAGS="${CST_WIN_CFLAGS:-}"
# Package only needs the agent binary; skip host-unrunnable Win32 tests.
cmake --build build-win-tui --target cst-agent

echo "==> package"
scripts/package_windows.sh