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Demonstrates Manual Tool Function Calls

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Demonstrates how to do manual tool function calling using Chilkat. This is where your application manually checks for function calls in the AI's response, makes the function calls, and returns the function call results to the AI.

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Unicode C++
#include <CkJsonObjectW.h>
#include <CkAiW.h>
#include <CkStringBuilderW.h>

void ChilkatSample(void)
    {
    bool success = false;

    // Create the following JSON to define tool functions available for the AI to use.
    // Note: You'll use the following JSON format regardless of the AI provider, whether
    // it be ChatGPT, Gemini, Claude, Grok, etc.  Chilkat automatically converts to the required
    // format needed for a given AI provider.

    // In this example, the application is providing two functions the AI may choose to call.

    // {
    //   "tools": [
    //     {
    //       "name": "get_horoscope",
    //       "description": "Get today's horoscope for an astrological sign.",
    //       "parameters": {
    //         "properties": {
    //           "sign": {
    //             "type": "string",
    //             "description": "An astrological sign like Taurus or Aquarius"
    //           }
    //         }
    //       }
    //     },
    //     {
    //       "name": "get_compatibility",
    //       "description": "Returns compatibility analysis between two zodiac signs, including a score and explanation.",
    //       "parameters": {
    //         "properties": {
    //           "sign1": {
    //             "type": "string",
    //             "description": "The first zodiac sign (e.g., Aries, Taurus, Gemini)."
    //           },
    //           "sign2": {
    //             "type": "string",
    //             "description": "The second zodiac sign (e.g., Aries, Taurus, Gemini)."
    //           },
    //           "relationship_type": {
    //             "type": "string",
    //             "description": "Type of compatibility to evaluate. (e.g., romantic, friendship, professional, general)"
    //           },
    //           "detail_level": {
    //             "type": "string",
    //             "description": "Level of detail in the response. (e.g., short, medium, detailed)"
    //           }
    //         }
    //       }
    //     }
    //   ]
    // }

    CkJsonObjectW jsonTools;

    int toolIdx = 0;

    jsonTools.put_I(toolIdx);
    jsonTools.UpdateString(L"tools[i].name",L"get_horoscope");
    jsonTools.UpdateString(L"tools[i].description",L"Get today's horoscope for an astrological sign.");
    jsonTools.UpdateString(L"tools[i].parameters.properties.sign.type",L"string");
    jsonTools.UpdateString(L"tools[i].parameters.properties.sign.description",L"An astrological sign like Taurus or Aquarius");

    toolIdx = toolIdx + 1;
    jsonTools.put_I(toolIdx);
    jsonTools.UpdateString(L"tools[i].name",L"get_compatibility");
    jsonTools.UpdateString(L"tools[i].description",L"Returns compatibility analysis between two zodiac signs, including a score and explanation.");
    jsonTools.UpdateString(L"tools[i].parameters.properties.sign1.type",L"string");
    jsonTools.UpdateString(L"tools[i].parameters.properties.sign1.description",L"The first zodiac sign (e.g., Aries, Taurus, Gemini).");
    jsonTools.UpdateString(L"tools[i].parameters.properties.sign2.type",L"string");
    jsonTools.UpdateString(L"tools[i].parameters.properties.sign2.description",L"The second zodiac sign (e.g., Aries, Taurus, Gemini).");
    jsonTools.UpdateString(L"tools[i].parameters.properties.relationship_type.type",L"string");
    jsonTools.UpdateString(L"tools[i].parameters.properties.relationship_type.description",L"Type of compatibility to evaluate. (e.g., romantic, friendship, professional, general)");
    jsonTools.UpdateString(L"tools[i].parameters.properties.detail_level.type",L"string");
    jsonTools.UpdateString(L"tools[i].parameters.properties.detail_level.description",L"Level of detail in the response. (e.g., short, medium, detailed)");

    // More tools can be added as desired..

    jsonTools.put_EmitCompact(false);
    wprintf(L"%s\n",jsonTools.emit());

    CkAiW ai;

    // Register the tools that will be made available to the AI.
    ai.RegisterManualTools(jsonTools);

    // The provider can be "openai", "google", "claude", "grok", "mistral", "custom", etc.
    ai.put_Provider(L"openai");
    // Use your provider's API key.
    ai.put_ApiKey(L"MY_API_KEY");
    // Choose a model.
    ai.put_Model(L"gpt-5-mini");

    // Tool function calling must always occur within a conversation.
    const wchar_t *conversation_name = L"convo_astrology";
    const wchar_t *sysMessage = L"You are a helpful astrologer";
    const wchar_t *devMessage = L"Respond only with a horoscope generated by a tool. Use the tool output as the final answer.";
    ai.NewConvo(conversation_name,sysMessage,devMessage);

    // Provide inputs
    ai.InputAddText(L"What is my horoscope? I am an Aquarius.");

    // Send inputs, tool functions, etc. and ask for a "text" response.
    success = ai.Ask(L"text");
    if (success == false) {
        wprintf(L"%s\n",ai.lastErrorText());
        return;
    }

    // Did the AI respond with requests for tool function calls?
    if (ai.get_HasFunctionCalls() == true) {

        CkJsonObjectW jsonFn;
        jsonFn.put_EmitCompact(false);

        ai.GetFunctionCalls(jsonFn);
        wprintf(L"%s\n",jsonFn.emit());

        // Note: Chilkat will convert responses from all AI providers to this format:

        // {
        //   "function_call": [
        //     {
        //       "name": "get_horoscope",
        //       "call_id": "call_RYmeysYQFocFc7Z2ofkv61dW",
        //       "arguments": "{\"sign\":\"Aquarius\"}",
        //       "args": {
        //         "sign": "Aquarius"
        //       }
        //     }
        //   ]
        // }

        int numFnCalls = jsonFn.SizeOfArray(L"function_call");
        int fn_idx = 0;
        while ((fn_idx < numFnCalls)) {
            jsonFn.put_I(fn_idx);

            CkStringBuilderW sbFnName;
            jsonFn.StringOfSb(L"function_call[i].name",sbFnName);
            const wchar_t *callId = jsonFn.stringOf(L"function_call[i].call_id");

            if (sbFnName.ContentsEqual(L"get_horoscope",true) == true) {

                // The get_horoscope function (as defined above) has one argument named "sign".
                const wchar_t *zodiac_sign = jsonFn.stringOf(L"function_call[i].args.sign");
                wprintf(L"zodiac_sign = %s\n",zodiac_sign);

                // Insert application code here to call your app's get_horoscope function, passing the zodiac_sign to it..

                // For this example, we'll pretend the app's get_horoscope function returned the following:
                const wchar_t *applicationFnCallResult = L"Aquarius: Next Tuesday you will befriend a baby otter.";

                // Provide the tool call result as an input for the followup Ask.
                ai.InputAddFnResult(callId,applicationFnCallResult);
            }

            // Your application would add code to check for and handle each possible function call.

            fn_idx = fn_idx + 1;
        }

        // After making the requested tool function calls, send the results back to the AI.
        success = ai.Ask(L"text");
        if (success == false) {
            wprintf(L"%s\n",ai.lastErrorText());
            return;
        }

    }

    // Get the final AI response.
    CkStringBuilderW sbResponse;
    ai.GetOutputTextSb(sbResponse);
    wprintf(L"%s\n",sbResponse.getAsString());
    }