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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <cjson/cJSON.h> 


// Function to search for the key in the JSON object
void search_key(cJSON *json, const char *key) {
    if (json == NULL) {
        return;
    }

    if (cJSON_IsObject(json) || cJSON_IsArray(json)) {
        cJSON *child = json->child;
        while (child) {
            // Compare the key with the child's key
            if (child->string && strcmp(child->string, key) == 0) {
                if (cJSON_IsString(child)) {
                    printf("Found key: %s, Value: %s\n", child->string, child->valuestring);
                } else {
                    // Convert json object to string
                    char *json_str = cJSON_Print(child);
                    printf("Found key: %s, Value: %s\n", child->string, json_str);
                }
            }
            // Continue the search recursively
            search_key(child, key);
            child = child->next;
        }
    }
}

int main(int argc, char *argv[]) {
    if (argc != 3) {
        printf("Usage: %s <json_filename> <target_key>\n", argv[0]);
        return 1;
    }

    const char *filename = argv[1];
    const char *target_key = argv[2];

    FILE *file = fopen(filename, "r");
    if (file == NULL) {
        perror("Error opening file");
        return 1;
    }

    fseek(file, 0, SEEK_END);
    long length = ftell(file);
    fseek(file, 0, SEEK_SET);

    char *data = (char *)malloc(length + 1);
    if (data == NULL) {
        perror("Error allocating memory");
        fclose(file);
        return 1;
    }

    fread(data, 1, length, file);
    data[length] = '\0';
    fclose(file);

    cJSON *json = cJSON_Parse(data);
    if (json == NULL) {
        printf("Error parsing JSON: %s\n", cJSON_GetErrorPtr());
        free(data);
        return 1;
    }

    // Display the JSON object
    printf("JSON Object:\n%s\n", cJSON_Print(json));

    search_key(json, target_key);

    cJSON_Delete(json);
    free(data);

    return 0;
}