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#pragma once
#include <string>
#include <functional>
#include "MessageProducer.h"
#include <iostream>
#include <memory>
#include "MessageIssue.h"

namespace lsp
{
class istream;
}

class StreamMessageProducer : public MessageProducer
{
public:
    StreamMessageProducer(MessageIssueHandler& message_issue_handler, std::shared_ptr<lsp::istream> _input)
        : issueHandler(message_issue_handler), input(_input)
    {
    }
    StreamMessageProducer(MessageIssueHandler& message_issue_handler) : issueHandler(message_issue_handler)
    {
    }

    bool keepRunning = false;

    virtual void bind(std::shared_ptr<lsp::istream>) = 0;

protected:
    MessageIssueHandler& issueHandler;
    std::shared_ptr<lsp::istream> input;
};

class LSPStreamMessageProducer : public StreamMessageProducer
{
public:
    struct Headers
    {
        int contentLength = -1;
        std::string charset;
        void clear()
        {
            contentLength = -1;
            charset.clear();
        }
    };
    bool handleMessage(Headers& headers, MessageConsumer callBack);

    LSPStreamMessageProducer(MessageIssueHandler& message_issue_handler, std::shared_ptr<lsp::istream> _input)
        : StreamMessageProducer(message_issue_handler, _input)
    {
    }
    LSPStreamMessageProducer(MessageIssueHandler& message_issue_handler) : StreamMessageProducer(message_issue_handler)
    {
    }

    void listen(MessageConsumer) override;
    void bind(std::shared_ptr<lsp::istream>) override;
    void parseHeader(std::string& line, Headers& headers);
};
class DelimitedStreamMessageProducer : public StreamMessageProducer
{
public:
    DelimitedStreamMessageProducer(MessageIssueHandler& message_issue_handler, std::shared_ptr<lsp::istream> _input)
        : StreamMessageProducer(message_issue_handler, _input)
    {
    }
    DelimitedStreamMessageProducer(MessageIssueHandler& message_issue_handler)
        : StreamMessageProducer(message_issue_handler)
    {
    }

    void listen(MessageConsumer) override;
    void bind(std::shared_ptr<lsp::istream>) override;
};