#pragma once

#include <string>
#include <memory>
#include <thread>
#include <mutex>
#include <map>
#include <atomic>
#include <opencv2/core/mat.hpp>
#include "video_reader.hpp"
#include "rtsp_reader.hpp"
#include "frame_queue.hpp"

namespace pipeline {

struct SourceStatus {
    bool is_connected{false};
    int frame_count{0};
    float current_fps{0.0f};
    int error_count{0};
    std::string last_error;
};

class InputManager {
public:
    explicit InputManager(size_t queue_capacity = 30);
    ~InputManager();

    // 禁用拷贝
    InputManager(const InputManager&) = delete;
    InputManager& operator=(const InputManager&) = delete;

    // 添加源
    bool addSource(const std::string& name, const RtspReader::Config& config, 
                  const std::string& url, const std::vector<std::string>& output_targets = {});
    bool addVideoSource(const std::string& name, const VideoReader::Config& config, 
                       const std::string& path, const std::vector<std::string>& output_targets = {});

    // 移除源
    bool removeSource(const std::string& name);

    // 获取下一批帧
    bool getNextBatch(std::vector<cv::Mat>& frames, int timeout_ms = 1000);

    // 获取源状态
    bool getSourceStatus(const std::string& name, SourceStatus& status);

    // 获取源名称列表
    std::vector<std::string> getSourceNames() const;

    // 获取源数量
    size_t getSourceCount() const;

    // 获取源的输出目标
    std::vector<std::string> getSourceOutputTargets(const std::string& name) const;

    // 清空所有源
    void clear();

private:
    enum class SourceType {
        RTSP,
        VIDEO
    };

    mutable std::mutex sources_mutex_;
    std::unordered_map<std::string, std::unique_ptr<RtspReader>> rtsp_sources_;
    std::unordered_map<std::string, std::unique_ptr<VideoReader>> video_sources_;
    std::unordered_map<std::string, std::unique_ptr<std::thread>> source_threads_;
    std::unordered_map<std::string, SourceType> source_types_;
    std::unordered_map<std::string, SourceStatus> source_status_;
    std::unordered_map<std::string, std::unique_ptr<FrameQueue>> source_queues_;
    std::unordered_map<std::string, std::vector<std::string>> source_output_targets_;
    std::atomic<bool> running_{true};
    std::atomic<int> active_threads_{0};

    void sourceThread(const std::string& name);
    void videoSourceThread(const std::string& name);
    void updateSourceStatus(const std::string& name, const SourceStatus& status);
};

} // namespace pipeline