#include <gtest/gtest.h>
#include <cstdint>
#include <filesystem>
#include <fstream>
#include "core/algo/GprVolumeBuilder.hpp"
#include "io/gpr/NormalizedRadarVolumeBridge.hpp"
namespace fs = std::filesystem;

TEST(NormalizedRadarBridge, BuildsVolumeWithExpectedAxes) {
  // K=4 道, M=2 通道, N=3 采样, 无通道偏移(不插值), coarse=1。
  fs::path dir = fs::temp_directory_path() / "radar_bridge_test";
  fs::create_directories(dir);
  { std::ofstream f(dir / "L.head");
    f << "SAMPLES:3\nNUMBER_OF_CH:2\nLAST_TRACE:8\nBITS:16\nENDIAN_TYPE:1\n"
         "DISTANCE_INTERVAL:0.1\nTIMEWINDOW:30\nDIELECTRIC:9\n"; }
  { std::ofstream f(dir / "L.data", std::ios::binary);
    for (int t = 0; t < 4; ++t) for (int c = 0; c < 2; ++c) for (int s = 0; s < 3; ++s) {
      std::int16_t v = static_cast<std::int16_t>(t * 10 + c * 100 + s);
      f.write(reinterpret_cast<const char*>(&v), 2); } }
  const auto b = geopro::io::gpr::buildLineVolumeFromNormalized(
      (dir).string(), "L", /*coarse=*/1, /*targetDy=*/0.0);  // targetDy=0 不插值
  EXPECT_EQ(b.vol.nx(), 4);   // 道
  EXPECT_EQ(b.vol.ny(), 2);   // 通道
  EXPECT_EQ(b.vol.nz(), 3);   // 采样
  EXPECT_DOUBLE_EQ(b.spacing[0], 0.1);  // dx=DISTANCE_INTERVAL
  EXPECT_GT(b.spacing[2], 0.0);         // dz 由 timewindow/dielectric 求得 >0
  EXPECT_NEAR(b.quant.toPhys(b.vol.at(3, 1, 2)), 132.0, b.quant.scale);  // t3c1s2=30+100+2
}