#include "json_parser.h"
#include "chinese_char_map.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>

// 简单的JSON解析函数，解析格式: {"cmd":1,"text":"hello"}
int ParseJsonCommand(const char* json_str, JsonCommand* command) {
    if (!json_str || !command) {
        return -1;
    }
    
    // 初始化结构体
    command->cmd = 0;
    memset(command->text, 0, MAX_TEXT_LENGTH);
    
    // 查找cmd字段
    const char* cmd_pos = strstr(json_str, "\"cmd\":");
    if (cmd_pos) {
        cmd_pos += 6; // 跳过"cmd":
        // 跳过空格
        while (*cmd_pos == ' ') cmd_pos++;
        command->cmd = atoi(cmd_pos);
    }
    
    // 查找text字段
    const char* text_pos = strstr(json_str, "\"text\":");
    if (text_pos) {
        text_pos += 7; // 跳过"text":
        // 跳过空格和引号
        while (*text_pos == ' ' || *text_pos == '\"') text_pos++;
        
        // 复制文本直到遇到引号或字符串结束
        int i = 0;
        while (*text_pos && *text_pos != '\"' && i < MAX_TEXT_LENGTH - 1) {
            command->text[i++] = *text_pos++;
        }
        command->text[i] = '\0';
    }
    
    return 0;
}

// 创建IP地址消息，格式: {"type":"ip","address":"192.168.1.100"}
int CreateIpMessage(char* buffer, int buffer_size, const char* ip_address) {
    if (!buffer || !ip_address || buffer_size < 50) {
        return -1;
    }
    
    int len = snprintf(buffer, buffer_size, 
                      "{\"type\":\"ip\",\"address\": \"%s\"}", 
                      ip_address);
    
    return (len > 0 && len < buffer_size) ? 0 : -1;
}

// 查找中文字符在fonts3数组中的索引
int FindChineseCharIndex(const char* utf8_char) {
    if (!utf8_char) {
        return -1;
    }
    
    // 遍历映射表查找匹配的字符
    for (int i = 0; i < CHINESE_CHAR_MAP_SIZE; i++) {
        if (strcmp(utf8_char, chinese_char_map[i].utf8_char) == 0) {
            return chinese_char_map[i].font_index;
        }
    }
    
    // 未找到匹配的字符
    return -1;
}