CommitMessageGenerator.h

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#ifndef COMMITMESSAGEGENERATOR_H
#define COMMITMESSAGEGENERATOR_H
 
#include "GitRunner.h"
#include <ai/AiApiBridge.h>
#include <string>
 
class CommitMessageGenerator {
private:
    AiApiBridge api_;
public:
    constexpr static int max_diff_size = 200000; // 適当
 
    struct CommitPair {
        std::string a = "HEAD";
        std::string b;
        CommitPair() = default;
        CommitPair(std::string const &a, std::string const &b)
            : a(a)
            , b(b)
        {
        }
    };
 
    struct Request {
        std::string diff;
        std::string status_s_u;
        std::string hint;
        int max_message_count = 5; // 生成するコミットメッセージ候補の数
        Request(std::string const &diff, std::string const &status_s_u, const std::string &hint)
            : diff(diff)
            , status_s_u(status_s_u)
            , hint(hint)
        {
        }
    };
 
    class Result {
    public:
        bool error = false;
        std::string error_status;
        std::string error_message;
        std::vector<std::string> messages;
        Result() = default;
        Result(std::vector<std::string> const &messages)
            : messages(messages)
        {
        }
    };
 
    CommitMessageGenerator::Request request_;
    CommitMessageGenerator(GenerativeAI::Model const &model, CommitMessageGenerator::Request const &request)
        : request_(request)
    {
        api_.set_ai_model(model);
        api_.set_system_role("You are an experienced engineer."); 
    }
    void set_ai_model(GenerativeAI::Model model)
    {
        api_.set_ai_model(model);
    }
    
    static Result parse_response(GenerativeAI::Model model, const AiResult &result);
    std::string generatePrompt() const;
    static bool accept_file_diff(const std::string &filename, const std::string &mimetype);
    static std::string make_diff(const std::string &gitcommand, const std::string &dir, CommitPair const &commits);
#ifdef APP_GUITAR
    static std::string make_diff(GitRunner g, CommitPair const &commits);
#endif
 
    AiResult request()
    {
        std::string prompt = generatePrompt();
        if (0) {
            fprintf(stderr, "%s\n", prompt.c_str());
            fflush(stderr);
        }
        return api_.request(prompt);
    }
};
 
#endif // COMMITMESSAGEGENERATOR_H