#!/bin/bash
# build_ncm_cross_host.sh — 在 Termux/本机（非容器）跑通 ncm 的容器交叉链路。
#
# 原构建脚本假定容器布局：build_ncm.sh 用 $HOME/Project/R3ProII/.tools 与
# .tools/mipsel-linux-muslsf-cross/mipsel-linux-muslsf（libz.a）；libs_common.sh 指向
# /home/Aska/...；build_sdk.sh 从 meow_launcherd 取 meow_font.a。本脚本不改这些脚本，
# 而是临时布局一个同构 $HOME（符号链接到本机真实工具链/仓库），再原样执行：
#   1) .tools/zig-mipsel-cc           -> ~/.tools/zig-mipsel-cc
#   2) .tools/mipsel-linux-muslsf-cross/mipsel-linux-muslsf
#                                     -> ~/.tools/mipsel-linux-musleabi-sysroot（含 lib/libz.a）
#   3) .tools/zig-env/bin/zig         -> 包装器：`zig ar` 转系统 GNU ar（架构无关）
#   4) launcher 镜像目录：仓库 meow_launcherd 头文件 + 取回的 meow_font.a（*.a 不入库）
#
# 依赖（均不入库）：
#   ~/.tools/zig-mipsel-cc
#   ~/.tools/mipsel-linux-musleabi-sysroot
#   patch_v2/sdk/vendor/freetype-src                    FreeType 2.14.3 源
#   patch_v2/ncm_app/vendor/{mbedtls,jsmn,minimp3,qrcodegen,dr_flac}
#   meow_font.a：默认找 patch_v2/meow_launcherd/meow_font.a，否则 <WORK>/launcher/meow_font.a
#
# 用法：
#   bash patch_v2/ncm_app/build_ncm_cross_host.sh [all|prep|sdk|vendor|host-mbedtls|core|tests|ncm]
#   缺省 all；各步日志写 <WORK>/logs/<step>.log（WORK 默认 ~/.cache/meow-ncm-build）。
set -e

SELF_DIR="$(cd "$(dirname "$0")" && pwd)"
REPO_ROOT="$(cd "$SELF_DIR/../.." && pwd)"
WORK="${NCM_CROSS_WORK:-$HOME/.cache/meow-ncm-build}"
LOGS="$WORK/logs"
HOMELAYOUT="$WORK/home"
PROJ="$HOMELAYOUT/Project/R3ProII"
TOOLS="${MEOW_TOOLS_DIR:-$HOME/.tools}"
SYSROOT="${MEOW_SYSROOT:-$TOOLS/mipsel-linux-musleabi-sysroot}"
FONT_A="${MEOW_FONT_A:-$REPO_ROOT/patch_v2/meow_launcherd/meow_font.a}"

usage() { sed -n '2,26p' "$0" | sed 's/^# \{0,1\}//'; }

prep() {
  mkdir -p "$PROJ/.tools/mipsel-linux-muslsf-cross" "$PROJ/.tools/zig-env/bin" "$LOGS" "$WORK/tmp"
  ln -sfn "$TOOLS/zig-mipsel-cc" "$PROJ/.tools/zig-mipsel-cc"
  ln -sfn "$SYSROOT" "$PROJ/.tools/mipsel-linux-muslsf-cross/mipsel-linux-muslsf"
  cat > "$PROJ/.tools/zig-env/bin/zig" <<'EOF'
#!/bin/sh
[ "$1" = ar ] && shift
exec ar "$@"
EOF
  chmod +x "$PROJ/.tools/zig-env/bin/zig"

  mkdir -p "$WORK/launcher-mirror"
  for f in "$REPO_ROOT"/patch_v2/meow_launcherd/*; do
    b="$(basename "$f")"
    [ "$b" = meow_font.a ] && continue
    ln -sfn "$f" "$WORK/launcher-mirror/$b"
  done
  if [ -f "$FONT_A" ]; then
    ln -sfn "$FONT_A" "$WORK/launcher-mirror/meow_font.a"
  elif [ -f "$WORK/launcher/meow_font.a" ]; then
    ln -sfn "$WORK/launcher/meow_font.a" "$WORK/launcher-mirror/meow_font.a"
  else
    echo "缺少 meow_font.a（放 patch_v2/meow_launcherd/ 或 $WORK/launcher/，或设 MEOW_FONT_A）" >&2
    exit 1
  fi

  [ -x "$PROJ/.tools/zig-mipsel-cc" ] || { echo "缺少交叉编译器: $TOOLS/zig-mipsel-cc" >&2; exit 1; }
  [ -f "$PROJ/.tools/mipsel-linux-muslsf-cross/mipsel-linux-muslsf/lib/libz.a" ] || {
    echo "缺少 sysroot libz.a: $SYSROOT/lib/libz.a" >&2; exit 1; }
  echo "== prep OK：$HOMELAYOUT =="
}

# 各步共用：同构 HOME + 显式 CC/AR（libs_common.sh 支持覆盖）+ Termux 可写 TMPDIR
export HOME="$HOMELAYOUT"
export CC_MIPS="$PROJ/.tools/zig-mipsel-cc"
export AR_MIPS="$(command -v ar)"
export TMPDIR="$WORK/tmp"

run() {
  local name="$1"; shift
  echo "== [$name] $*"
  set +e
  ( "$@" ) 2>&1 | tee "$LOGS/$name.log"
  local rc=${PIPESTATUS[0]}
  set -e
  [ "$rc" -eq 0 ] || { echo "[FAIL] $name rc=$rc（日志 $LOGS/$name.log）" >&2; exit "$rc"; }
}

step_sdk() {
  run sdk env LAUNCHER_DIR="$WORK/launcher-mirror" bash "$REPO_ROOT/patch_v2/sdk/build_sdk_host.sh" --verify
}

step_vendor() {
  cd "$SELF_DIR"
  run vendor bash ./build_mbedtls.sh
}

# 宿主 mbedtls：复用 vendor 步骤已裁剪并应用的 config，gcc 重编同一套库给宿主测试。
step_host_mbedtls() {
  local MB="$SELF_DIR/vendor/mbedtls" BM="$SELF_DIR/out/mbedtls/host"
  [ -f "$MB/include/mbedtls/mbedtls_config.h" ] || { echo "先跑 vendor 步骤（config 未就绪）" >&2; exit 1; }
  # everest/ p256-m 的对象在 3rdparty/ 下（library/ 里只有 *.c 引子）；只删 library/*.o 会留下
  # 上一轮的 mipsel 对象，归档后与宿主对象混架构（ld: incompatible with aarch64linux）。
  find "$MB/library" "$MB/3rdparty" -name '*.o' -delete
  find "$MB/library" "$MB/3rdparty" -name '*.a' -delete
  rm -rf "$BM"; mkdir -p "$BM"
  run host-mbedtls make -C "$MB" lib CC=gcc AR=ar \
    CFLAGS="-O2 -Wno-unused-parameter -fno-stack-protector"
  for a in libmbedcrypto.a libmbedx509.a libmbedtls.a; do
    [ -s "$MB/library/$a" ] && cp "$MB/library/$a" "$BM/$a"
  done
  ls -la "$BM"
}

step_core() {
  cd "$SELF_DIR"
  run core bash ./build_core.sh
  local DATA="$WORK/ncm_test"
  rm -rf "$DATA"; mkdir -p "$DATA"
  run core-test ./test/test_ncm_core_host "$DATA"
}

step_tests() {
  cd "$SELF_DIR"
  run tag-build bash ./build_ncm_tag_host.sh
  run tag-test ./test/test_ncm_tag_host
  run cache-build bash ./build_ncm_cache_host.sh
  run cache-test ./test/test_ncm_cache_host
}

step_ncm() {
  cd "$SELF_DIR"
  run ncm bash ./build_ncm.sh
  # 只匹配编译器告警本身；build_ncm.sh 结尾的 "0 warning enforced" 总结不是告警。
  if grep -i "warning:" "$LOGS/ncm.log"; then
    echo "[FAIL] ncm 构建出现告警（要求 0 warning）" >&2
    exit 1
  fi
}

case "${1:-all}" in
  prep) prep ;;
  sdk) prep; step_sdk ;;
  vendor) prep; step_vendor ;;
  host-mbedtls) prep; step_host_mbedtls ;;
  core) prep; step_core ;;
  tests) prep; step_tests ;;
  ncm) prep; step_ncm ;;
  all) prep; step_sdk; step_vendor; step_host_mbedtls; step_core; step_tests; step_ncm ;;
  -h|--help) usage ;;
  *) echo "未知步骤: $1（all|prep|sdk|vendor|host-mbedtls|core|tests|ncm）" >&2; exit 2 ;;
esac