#!/bin/bash
# build_reader.sh — os.meow.reader R2 可复现构建：
#   vendor: freetype(静态)/miniz/libmobi/stb/zlib 头 → 交叉 mipsel 编 reader 二进制
#         + 宿主 core 单测(R1+loaders) + qemu-mipsel 冒烟(rdft/book/formats)。
#
# 产物：
#   reader                          mipsel 静态 ELF（链 meow_ui.a + freetype + miniz + libmobi + zlib）
#   test/test_reader_core_host      宿主 core 单测（enc/layout/txt）
#   test/loaders_smoke_host         宿主四格式 loader 单测
#   test/rdft_smoke_mipsel          qemu-mipsel FreeType 冒烟
#   test/book_smoke_mipsel          qemu-mipsel TXT 书桥冒烟
#   test/formats_smoke_mipsel       qemu-mipsel 四格式书桥冒烟
#
# 约束：只写本目录（patch_v2/reader_app/）；不改 sdk/；-Wall -Wextra 0 warning（自有代码）。
# vendor/（第三方源码+构建产物）gitignore，不入仓；build 脚本可复现。
set -e
cd "$(dirname "$0")"
ROOT="$HOME/Project/R3ProII"
CC="$ROOT/.tools/zig-mipsel-cc"
SYSROOT="$ROOT/.tools/mipsel-linux-muslsf-cross/mipsel-linux-muslsf"
HOST_CC="${HOST_CC:-gcc}"
VENDOR="$PWD/vendor"
OBJ="$VENDOR/build"
mkdir -p "$OBJ"

# ---------- 1) vendor 拉取/对齐 ----------
FT_VER="2.14.3"; MINIZ_URL="https://codeload.github.com/richgel999/miniz/tar.gz/refs/heads/master"
LM_URL="https://codeload.github.com/bfabiszewski/libmobi/tar.gz/refs/heads/master"
mkdir -p "$VENDOR"
fetch_freetype() {
  if [ -n "$FREETYPE_SRC" ] && [ -f "$FREETYPE_SRC/CMakeLists.txt" ]; then cp -r "$FREETYPE_SRC" vendor/freetype-src;
  elif [ ! -d "$VENDOR/freetype-src" ] && [ -f /tmp/freetype/CMakeLists.txt ]; then cp -r /tmp/freetype "$VENDOR/freetype-src";
  elif [ ! -d "$VENDOR/freetype-src" ]; then
    ( cd "$VENDOR" && curl -fsSL -o ft.tar.xz "https://download.savannah.gnu.org/releases/freetype/freetype-$FT_VER.tar.xz" \
      && mkdir -p freetype-src && tar xf ft.tar.xz -C freetype-src --strip-components=1 && rm ft.tar.xz )
  fi
  [ -f "$VENDOR/freetype-src/CMakeLists.txt" ] || { echo "freetype 不可用"; exit 1; }
}
fetch_miniz() {
  if [ ! -f "$VENDOR/miniz/miniz.c" ]; then
    ( cd /tmp && curl -fsSL -o miniz.tgz "$MINIZ_URL" && mkdir -p miniz_m && tar xzf miniz.tgz -C miniz_m --strip-components=1 \
      && cp miniz_m/miniz.c miniz_m/miniz.h miniz_m/miniz_common.h miniz_m/miniz_tdef.c miniz_m/miniz_tdef.h \
         miniz_m/miniz_tinfl.c miniz_m/miniz_tinfl.h miniz_m/miniz_zip.c miniz_m/miniz_zip.h "$VENDOR/miniz/" )
  fi
  [ -f "$VENDOR/miniz/miniz.c" ] || { echo "miniz 不可用"; exit 1; }
}
fetch_libmobi() {
  if [ ! -f "$VENDOR/libmobi/src/mobi.h" ]; then
    ( cd /tmp && curl -fsSL -o lm.tgz "$LM_URL" && mkdir -p lm_m && tar xzf lm.tgz -C lm_m --strip-components=1 \
      && mkdir -p "$VENDOR/libmobi" && cp -r lm_m/src "$VENDOR/libmobi/src" && cp lm_m/COPYING "$VENDOR/libmobi/COPYING" )
  fi
  [ -f "$VENDOR/libmobi/src/mobi.h" ] || { echo "libmobi 不可用"; exit 1; }
}
fetch_stb() { [ -f "$VENDOR/stb/stb_image.h" ] || { mkdir -p "$VENDOR/stb"; cp "$ROOT/patch_v2/sdk/stb_image.h" "$VENDOR/stb/stb_image.h"; }; }
fetch_freetype; fetch_miniz; fetch_libmobi; fetch_stb
if [ ! -f "$VENDOR/zlib/zlib.h" ]; then mkdir -p "$VENDOR/zlib"; cp /usr/include/zlib.h /usr/include/zconf.h "$VENDOR/zlib/" 2>/dev/null || true; fi

# ---------- 2) FreeType mipsel 静态构建 ----------
FT_SRC="$VENDOR/freetype-src"; FT_BUILD="$VENDOR/freetype-build"
if [ ! -f "$FT_BUILD/libfreetype.a" ] || [ -n "$FORCE_FT" ]; then
  rm -rf "$FT_BUILD"
  cmake -S "$FT_SRC" -B "$FT_BUILD" -DCMAKE_SYSTEM_NAME=Linux -DCMAKE_C_COMPILER="$CC" \
    -DCMAKE_TRY_COMPILE_TARGET_TYPE=STATIC_LIBRARY -DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS=OFF \
    -DFT_DISABLE_ZLIB=TRUE -DFT_DISABLE_BZIP2=TRUE -DFT_DISABLE_PNG=TRUE -DFT_DISABLE_HARFBUZZ=TRUE -DFT_DISABLE_BROTLI=TRUE >/dev/null
  cmake --build "$FT_BUILD" -j"$(nproc)" >/dev/null 2>&1
fi
FT_INCS="-I$FT_BUILD -I$FT_BUILD/include -I$FT_SRC/include"

COREINC="-Icore -Ivendor/miniz -Ivendor/stb -Ivendor/libmobi/src -Ivendor/zlib"
MZFLAGS="-DMINIZ_NO_ZLIB_COMPATIBLE_NAMES -DMINIZ_NO_TIME"

# ---------- 3) miniz + libmobi 对象（mipsel） ----------
build_mipsel_libs() {
  for f in vendor/miniz/miniz_tinfl.c vendor/miniz/miniz_tdef.c vendor/miniz/miniz_zip.c vendor/miniz/miniz.c; do
    b="$(basename "$f" .c)"; [ -f "$OBJ/mz_$b.o" ] || $CC -Os -static -Wall -Wextra -Ivendor/miniz $MZFLAGS -c "$f" -o "$OBJ/mz_$b.o"
  done
  for f in vendor/libmobi/src/*.c; do b="$(basename "$f" .c)"; [ "$b" = "miniz" ] && continue
    [ -f "$OBJ/lm_$b.o" ] || $CC -Os -static -w -Ivendor/libmobi/src -Ivendor/zlib -c "$f" -o "$OBJ/lm_$b.o"
  done
  [ -f "$OBJ/rdimg.o" ] || $CC -Os -static -Wall -Wextra -Ivendor/stb -DSTB_IMAGE_IMPLEMENTATION -c engine/rdimg.c -o "$OBJ/rdimg.o"
}
build_mipsel_libs

# ---------- 4) 宿主 loader 单测（miniz/libmobi 用宿主编一遍） ----------
echo "==> host core test (R1)"
$HOST_CC -O2 -Wall -Wextra -Icore -I. test/test_reader_core.c core/rdenc.c core/rdlayout.c core/rdtxt.c -o test/test_reader_core_host -lm
./test/test_reader_core_host

echo "==> host loaders test"
HOBJ="$OBJ/host"; mkdir -p "$HOBJ"
for f in vendor/miniz/miniz_tinfl.c vendor/miniz/miniz_tdef.c vendor/miniz/miniz_zip.c vendor/miniz/miniz.c; do
  b="$(basename "$f" .c)"; [ -f "$HOBJ/mz_$b.o" ] || $HOST_CC -O2 -Ivendor/miniz $MZFLAGS -c "$f" -o "$HOBJ/mz_$b.o"
done
for f in vendor/libmobi/src/*.c; do b="$(basename "$f" .c)"; [ "$b" = "miniz" ] && continue
  [ -f "$HOBJ/lm_$b.o" ] || $HOST_CC -O2 -w -Ivendor/libmobi/src -Ivendor/zlib -c "$f" -o "$HOBJ/lm_$b.o"
done
HCORE=""
for f in rdxml rdhtml rdsb rdzip rdsrc rdepub rdfb2 rdmobi rdcbz rdenc rdtxt; do
  $HOST_CC -O2 -Wall -Wextra $COREINC -c core/$f.c -o "$HOBJ/core_$f.o"
done
python3 tools/gen_samples.py >/dev/null
$HOST_CC -O2 -Wall -Wextra $COREINC test/loaders_smoke.c "$HOBJ"/*.o -lz -lm -o test/loaders_smoke_host
./test/loaders_smoke_host /tmp/rd_samples

# ---------- 5) qemu-mipsel FreeType 冒烟 ----------
echo "==> mipsel ft smoke"
$CC -Os -static -Wall -Wextra -Iengine $FT_INCS test/rdft_smoke.c engine/rdft.c "$FT_BUILD/libfreetype.a" -o test/rdft_smoke_mipsel
timeout 120 qemu-mipsel ./test/rdft_smoke_mipsel "${FONT:-$ROOT/font/src/MiSans-Regular.otf}"

# ---------- 6) qemu-mipsel 书桥冒烟（TXT + 四格式） ----------
echo "==> mipsel book smoke (TXT)"
$CC -Os -static -Wall -Wextra -Iapp -Icore -Iengine $FT_INCS $COREINC test/book_smoke.c \
  app/book.c core/rdenc.c core/rdlayout.c core/rdtxt.c core/rdxml.c core/rdhtml.c core/rdsb.c core/rdzip.c \
  core/rdsrc.c core/rdepub.c core/rdfb2.c core/rdmobi.c core/rdcbz.c engine/rdft.c \
  "$OBJ"/mz_*.o "$OBJ"/lm_*.o "$OBJ"/rdimg.o "$SYSROOT/lib/libz.a" "$FT_BUILD/libfreetype.a" -o test/book_smoke_mipsel
timeout 120 qemu-mipsel ./test/book_smoke_mipsel "${FONT:-$ROOT/font/src/MiSans-Regular.otf}"

echo "==> mipsel formats smoke"
$CC -Os -static -Wall -Wextra -Iapp -Icore -Iengine $FT_INCS $COREINC test/formats_smoke.c \
  app/book.c core/rdenc.c core/rdlayout.c core/rdtxt.c core/rdxml.c core/rdhtml.c core/rdsb.c core/rdzip.c \
  core/rdsrc.c core/rdepub.c core/rdfb2.c core/rdmobi.c core/rdcbz.c engine/rdft.c \
  "$OBJ"/mz_*.o "$OBJ"/lm_*.o "$OBJ"/rdimg.o "$SYSROOT/lib/libz.a" "$FT_BUILD/libfreetype.a" -o test/formats_smoke_mipsel
timeout 150 qemu-mipsel ./test/formats_smoke_mipsel "${FONT:-$ROOT/font/src/MiSans-Regular.otf}" /tmp/rd_samples

# ---------- 7) reader 二进制（mipsel 静态） ----------
echo "==> reader binary"
CORE_L="core/rdenc.c core/rdlayout.c core/rdtxt.c core/rdxml.c core/rdhtml.c core/rdsb.c core/rdzip.c core/rdsrc.c core/rdepub.c core/rdfb2.c core/rdmobi.c core/rdcbz.c"
ENGINE_L="engine/rdft.c"
APP_L="app.c app/shelf.c app/reader.c app/book.c app/progress.c"
$CC -Os -static -Wall -Wextra -I../sdk -I. -Icore -Iapp -Iengine $FT_INCS $COREINC \
  $CORE_L $APP_L $ENGINE_L "$OBJ"/mz_*.o "$OBJ"/lm_*.o "$OBJ"/rdimg.o \
  ../sdk/meow_ui.a "$SYSROOT/lib/libz.a" "$FT_BUILD/libfreetype.a" -lpthread -o reader
ls -la reader
file reader
md5sum reader
echo "  运行(qemu): qemu-mipsel ./reader"
echo "build_reader OK"