#pragma once

#include <string>

enum class StreamError
{
    STREAM_OK = 0,             // 成功
    STREAM_INVALID_HANDLE = 1, // handle 不存在
    STREAM_WRITE_FAILED = 2,   // 写入失败（缓冲或解析错误）
    STREAM_ALREADY_CLOSED = 3, // 已关闭
    STREAM_UNKNOWN_TYPE = 4    // Open 类型错误
};

/**
 * @brief 数据流抽象类
 */
class INativeStream
{
public:
    virtual void Write(const void* data, size_t size) = 0;
    virtual void Complete() = 0;
    virtual ~INativeStream() {}
};

/**
 * @brief 缓冲流：累积 Write 的数据，Complete 后可通过 GetContent 取完整内容
 */
class BufferStream : public INativeStream
{
public:
    void Write(const void* data, size_t size) override;
    void Complete() override;
    const std::string& GetContent() const { return m_buffer; }

private:
    std::string m_buffer;
};