#include <curl/curl.h>
#include <gst/app/gstappsink.h>
#include <gst/gst.h>

#include <fstream>
#include <iostream>
#include <mutex>
#include <string>

#include <condition_variable>
#include <list>
#include <mutex>
#include <queue>
#include <thread>
#include <unordered_map>

#include "my_utils.h"
#include "vehicle_event_service.h"
#include <filesystem>
#include <optional>

#include <atomic>
#include <chrono>
#include <filesystem>
#include <iostream>
#include <memory>
#include <mutex>
#include <string>
#include <thread>
#include <unordered_map>

#include <miniocpp/client.h>

#include "ds_yml_parse.h"

#include <SimpleAmqpClient/SimpleAmqpClient.h>
// ======================== 配置区 ========================

// 全局记录存储
RecordStore g_store;
// 全局请求队列
RecordQueue g_queue;
// 正面摄像头 RTSP 地址映射表
std::unordered_map<int, std::string> g_source_front_map;
// 侧面摄像头 RTSP 地址映射表
std::unordered_map<int, std::string> g_source_side_map;
RtspManager rtsp_mgr_side;
static std::mutex g_vehicle_mutex;

std::atomic<bool> stop_flag(false);
#include <algorithm>
#include <string>

bool delete_file(const std::string &file_path) {
  try {
    if (std::filesystem::exists(file_path)) {
      return std::filesystem::remove(file_path); // 成功返回 true
    } else {
      std::cout << "file does not exist: " << file_path << std::endl;
      return false;
    }
  } catch (const std::filesystem::filesystem_error &e) {
    std::cout << "failed to delete file: " << e.what() << std::endl;
    return false;
  }
}

/**
 * 更新车辆基础信息（跨线前，可多次更新）
 */
void update_object_base_info(guint source_id, guint64 object_id,
                             const std::string &vehicle_type) {
  std::lock_guard<std::mutex> lk(g_vehicle_mutex);
  TrackKey key{source_id, object_id};
  Record record;
  if (g_store.get(key, record)) {
    // 已经过 Line B 上传的不再更新车牌/车型
    if (record.crossed_line_b) {
      return;
    }
    // vehicle_type 一般比车牌稳定，可直接覆盖或也做类似策略
    if (!vehicle_type.empty()) {
      record.vehicle_type = vehicle_type;
    }
  } else {
    // 新对象
    record.source_id = source_id;
    record.object_id = object_id;
    record.vehicle_type = vehicle_type;
    record.insert_time = std::chrono::steady_clock::now();
  }
  g_store.upsert(key, record);
}
/**
 * 触发车辆跨线事件（拍照线 Line A）
 */
void trigger_line_a_capture(guint source_id, guint64 object_id) {
  std::lock_guard<std::mutex> lk(g_vehicle_mutex);
  TrackKey key{source_id, object_id};
  Record record;
  if (!g_store.get(key, record)) {
    // 没有基础信息，不允许触发
    return;
  }
  if (record.crossed_line_a) {
    // 已经在 Line A 拍照过，不再重复
    return;
  }
  // 状态迁移：未拍照 -> 已拍照
  record.crossed_line_a = true;
  // 拍照，但不上传
  record.vehicle_image_side = rtsp_mgr_side.capture_frame_by_source(source_id);
  g_store.upsert(key, record);
}

/**
 * 触发车辆跨线事件（上传线 Line B）
 */
void trigger_line_b_upload(guint source_id, guint64 object_id,
                           const std::string &file_name) {
  std::lock_guard<std::mutex> lk(g_vehicle_mutex);
  TrackKey key{source_id, object_id};
  Record record;
  if (!g_store.get(key, record)) {
    // 没有基础信息，不允许触发
    return;
  }
  if (!record.crossed_line_a) {
    // 没有经过 Line A，不允许上传
    g_store.remove(key);
    return;
  }

  if (record.crossed_line_b) {
    // 已经在 Line B 上传过，保证只触发一次
    g_store.remove(key);
    return;
  }
  record.vehicle_image_front = file_name;
  // 状态迁移：未上传 -> 已上传
  record.crossed_line_b = true;
  g_store.upsert(key, record);

  int vehicle_type = ds_parse_group_type(yaml_file_path, "vehicle_type");
  bool match = false;
  switch (vehicle_type) {
  case 0:
    match = true;
    break;
  case 1:
    match = (record.vehicle_type == "coupe");
    break;
  case 2:
    match = (record.vehicle_type == "largevehicle");
    break;
  case 3:
    match = (record.vehicle_type == "sedan");
    break;
  case 4:
    match = (record.vehicle_type == "suv");
    break;
  case 5:
    match = (record.vehicle_type == "truck");
    break;
  case 6:
    match = (record.vehicle_type == "van");
    break;
  case 7:
    match = (record.vehicle_type == "largevehicle" ||
             record.vehicle_type == "truck");
    break;
  default:
    match = false;
    break;
  }

  if (match) {
    g_queue.push(record);
  } else {
    // 删除不符合条件的记录与图片，避免占用空间
    g_store.remove(key);
  }
}

// =======================================================

/**
 * MinIO 上传
 */
bool upload_minio(const std::string &object_name,
                  const std::string &file_path) {

  // Create S3 base URL.
  minio::s3::BaseUrl base_url;
  base_url.host = "ai.ronsunny.cn";
  base_url.port = 9000;
  base_url.https = true;
  base_url.region = "China.Chengdu";
  // Create credential provider.
  minio::creds::StaticProvider provider("minioadmin", "minioadmin");
  // Create S3 client.
  minio::s3::Client client(base_url, &provider);
  std::string bucket_name = "sentinel";
  // Check 'asiatrip' bucket exist or not.
  bool exist;
  {
    minio::s3::BucketExistsArgs args;
    args.bucket = bucket_name;
    minio::s3::BucketExistsResponse resp = client.BucketExists(args);
    if (!resp) {
      std::cout << "unable to do bucket existence check:" << resp.Error()
                << std::endl;
      return EXIT_FAILURE;
    }
    exist = resp.exist;
  }
  if (!exist) {
    minio::s3::MakeBucketArgs args;
    args.bucket = bucket_name;
    minio::s3::MakeBucketResponse resp = client.MakeBucket(args);
    if (!resp) {
      std::cout << "unable to create bucket; " << resp.Error() << std::endl;
      return EXIT_FAILURE;
    }
  }
  minio::s3::UploadObjectArgs args;
  args.bucket = bucket_name;
  args.object = object_name;
  args.filename = file_path;
  minio::s3::UploadObjectResponse resp = client.UploadObject(args);
  if (!resp) {
    std::cout << "unable to upload object; " << resp.Error() << std::endl;
    return EXIT_FAILURE;
  }
  return EXIT_SUCCESS;
}

// void front_worker_thread() {
//   std::string device_id = GetDeviceID();

//   AmqpClient::Channel::OpenOpts opts;
//   opts.host = "ai.ronsunny.cn";
//   opts.port = 5672;
//   opts.auth =
//       AmqpClient::Channel::OpenOpts::BasicAuth("jetson_sentinel", "123456");
//   opts.vhost = "sentinel";

//   auto channel = AmqpClient::Channel::Open(opts);
//   std::string queue = "sentinel.front_pic." + device_id;

//   channel->DeclareQueue(queue, false, true, false, false);

//   std::string consumer_tag =
//       channel->BasicConsume(queue, "", true, true, false);

//   while (!stop_flag) {
//     AmqpClient::Envelope::ptr_t envelope;

//     bool received = channel->BasicConsumeMessage(consumer_tag, envelope);

//     if (received) {
//       printf("Received message: %s\n", envelope->Message()->Body().c_str());
//       std::string recordId = envelope->Message()->Body();
//       // 1. 上传正面照到OSS
//       Record record;
//       if (!g_store.get_by_id(recordId, record)) {
//         std::cerr << "No record found for id=" << recordId << std::endl;
//         continue;
//       }
//       if (record.vehicle_image_front.empty()) {
//         std::cerr << "No front image for record id=" << recordId <<
//         std::endl; continue;
//       }
//       auto file_path =
//           "./temp/" +
//           std::filesystem::path(record.vehicle_image_front).filename().string();
//       auto upload_result = upload_minio(
//           "vehicle_image_front/" + record.vehicle_image_side, file_path);
//       if (EXIT_FAILURE == upload_result) {
//         std::cerr << "Failed to upload image for record id=" <<
//         record.object_id
//                   << std::endl;
//         continue;
//       }
//       // 2. HTTP 请求服务器
//       AnalyticsClient client("https://ai.ronsunny.cn:8090/api/public/"
//                              "sentinel-record-analytics");
//       std::string err;
//       nlohmann::json j;
//       j["Id"] = recordId;
//       j["DeviceId"] = device_id;
//       j["vehicleImageFront"] = record.vehicle_image_front;
//       j["vehicleImageSide"] = record.vehicle_image_side;
//       if (!client.call(j, err)) {
//         std::cerr << "Analytics request failed: " << err << "\n";
//       }
//       TrackKey key{record.source_id, record.object_id};
//       g_store.remove(key);
//     }
//   }
// }
void side_worker_thread() {
  while (!stop_flag) {
    Record record = g_queue.pop();
    if (record.vehicle_image_side.empty() ||
        record.vehicle_image_front.empty()) {
      std::cerr << "No side image for record id=" << record.object_id
                << std::endl;
      continue;
    }
    auto file_path =
        "./temp/" +
        std::filesystem::path(record.vehicle_image_side).filename().string();
    if (!std::filesystem::exists(file_path) ||
        std::filesystem::is_directory(file_path)) {

      std::cerr << "invalid file: " << file_path << std::endl;
      continue;
    }
    auto upload_result = upload_minio(
        "vehicle_image_side/" + record.vehicle_image_side, file_path);
    if (EXIT_FAILURE == upload_result) {
      std::cerr << "Failed to upload image for record id=" << record.object_id
                << std::endl;
      continue;
    }
    file_path =
        "./temp/" +
        std::filesystem::path(record.vehicle_image_front).filename().string();
    if (!std::filesystem::exists(file_path) ||
        std::filesystem::is_directory(file_path)) {

      std::cerr << "invalid file: " << file_path << std::endl;
      continue;
    }
    upload_result = upload_minio(
        "vehicle_image_front/" + record.vehicle_image_front, file_path);
    if (EXIT_FAILURE == upload_result) {
      std::cerr << "Failed to upload image for record id=" << record.object_id
                << std::endl;
      continue;
    }
    // 2. HTTP 请求服务器
    AnalyticsClient client("https://ai.ronsunny.cn:8090/api/public/"
                           "sentinel-record-analytics");
    std::string err;

    std::string id = generateUUID();
    record.id = id;
    nlohmann::json j;
    j["Id"] = id;
    j["DeviceId"] = GetDeviceID();
    j["VehicleType"] = record.vehicle_type;
    j["vehicleImageFront"] = record.vehicle_image_front;
    j["vehicleImageSide"] = record.vehicle_image_side;
    if (!client.call(j, err)) {
      std::cerr << "Analytics request failed: " << err << "\n";
    }
    // 删除本地文件和记录
    TrackKey key{record.source_id, record.object_id};
    g_store.remove(key);
  }
}