// retoor <retoor@molodetz.nl>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
// Placeholder for LLM API call
// In a real implementation, this function would call the LLM API to get the summary.
static char* call_llm_to_summarize(const char* messages_concatenated) {
    // For demonstration, just return a dummy summary.
    return strdup("This is a summary of the oldest 20 messages.");
}
char* summarize_oldest_messages(const char** messages, size_t message_count) {
    // Concatenate the oldest 20 messages
    size_t total_length = 0;
    size_t start_index = 0;
    if (message_count > 20) {
        start_index = message_count - 20;
    }
    for (size_t i = start_index; i < message_count; ++i) {
        total_length += strlen(messages[i]) + 1; // +1 for separator
    }
    char* concatenated = malloc(total_length + 1);
    if (!concatenated) {
        return NULL;
    }
    size_t write_offset = 0;
    for (size_t i = start_index; i < message_count; ++i) {
        size_t msg_len = strlen(messages[i]);
        memcpy(concatenated + write_offset, messages[i], msg_len);
        write_offset += msg_len;
        if (i < message_count - 1) {
            concatenated[write_offset++] = ' ';
        }
    }
    concatenated[write_offset] = '\0';
    // Call the LLM API to get the summary
    char* summary = call_llm_to_summarize(concatenated);
    free(concatenated);
    return summary;
}