tool_call_history.h

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// SPDX-License-Identifier: Apache-2.0
#pragma once
 
#include <cstddef>
#include <mutex>
#include <shared_mutex>
#include <string>
#include <vector>
 
namespace entropic {
 
struct ToolCallRecord {
    size_t sequence;              
    std::string tool_name;        
    std::string params_summary;   
    std::string status;           
    std::string result_summary;   
    double elapsed_ms;            
    std::string error_detail;     
    int iteration;                
};
 
class ToolCallHistory {
public:
    explicit ToolCallHistory(size_t capacity = 100);
 
    void record(const ToolCallRecord& entry);
 
    std::vector<ToolCallRecord> recent(size_t count) const;
 
    std::vector<ToolCallRecord> all() const;
 
    std::string to_json(size_t count) const;
 
    size_t size() const;
 
private:
    std::vector<ToolCallRecord> buffer_; 
    size_t head_ = 0;                    
    size_t count_ = 0;                   
    size_t capacity_;                    
    mutable std::shared_mutex mutex_;    
};
 
std::string summarize_params(const std::string& args_json);
 
std::string truncate_result(const std::string& text, size_t max_len);
 
} // namespace entropic