(Objective-C) Prove Stateful Multi-Turn Conversation

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Note: This example requires Chilkat v11.2.0 or greater.

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#import <CkoAi.h>
#import <NSString.h>
#import <CkoStringBuilder.h>
#import <CkoJsonObject.h>

BOOL success = NO;

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

CkoAi *ai = [[CkoAi alloc] init];

// The provider can be "openai", "google", "claude", "deepseek", "xai", or "perplexity".
// Support for additional providers will be added in future versions of Chilkat.
ai.Provider = @"google";

// Use your provider's API key.
ai.ApiKey = @"MY_API_KEY";

// Choose a model.
ai.Model = @"gemini-2.5-flash";

// Create a new conversation to be maintained locally in memory.
// If the conversation is the first to be created, it is also automatically selected.
NSString *systemMsg = @"You are a helpful assistant";
NSString *developerMsg = @"";
NSString *conversationName = @"test_conversation";
[ai NewConvo: conversationName sysMsg: systemMsg devMsg: developerMsg];

// -------------------------------------------------------------------------------------------
// Our first request will establish a secret that we'll ask for in the 2nd request.
// Add a text input.
[ai InputAddText: @"Please remember this: The word I'll ask for later is BlubberFish.  What's the word?"];

// Ask the AI for text output.
success = [ai Ask: @"text"];
if (success == NO) {
    NSLog(@"%@",ai.LastErrorText);
    return;
}

// Note: The inputs accumulated through one or more calls to Input* methods are cleared when the Ask method returns with success.

// Get the text response.
CkoStringBuilder *sbResponse = [[CkoStringBuilder alloc] init];
[ai GetOutputTextSb: sbResponse];
NSLog(@"%@",[sbResponse GetAsString]);
NSLog(@"%@",@"----");

// Sample output:

// The word is **BlubberFish**.

// -------------------------------------------------------------------------------------------
// Let's ask for the word. If this is a stateful conversation, the AI should respond correctly.
[ai InputAddText: @"OK, I'm going to ask you again, what's the word?"];
success = [ai Ask: @"text"];
if (success == NO) {
    NSLog(@"%@",ai.LastErrorText);
    return;
}

// Get the text response.
[sbResponse Clear];
[ai GetOutputTextSb: sbResponse];
NSLog(@"%@",[sbResponse GetAsString]);

// Sample output:

// The word is **BlubberFish**.

// -------------------------------------------------------------------------------------------
// Look at the conversation so far...
// 
CkoJsonObject *json = [[CkoJsonObject alloc] init];
[ai ExportConvo: conversationName json: json];
json.EmitCompact = NO;
NSLog(@"%@",[json Emit]);

// Note: The conversation transcript format exported and imported by Chilkat is always the OpenAI format,
// regardless of the AI provider.  (Chilkat translates the format from OpenAI to whatever is needed by the actual AI provider being used.)

// {
//   "input": [
//     {
//       "role": "system",
//       "content": [
//         {
//           "type": "input_text",
//           "text": "You are a helpful assistant"
//         }
//       ]
//     },
//     {
//       "role": "user",
//       "content": [
//         {
//           "type": "input_text",
//           "text": "Please remember this: The word I'll ask for later is BlubberFish.  What's the word?"
//         }
//       ]
//     },
//     {
//       "role": "assistant",
//       "content": [
//         {
//           "type": "output_text",
//           "text": "The word is **BlubberFish**."
//         }
//       ]
//     },
//     {
//       "role": "user",
//       "content": [
//         {
//           "type": "input_text",
//           "text": "OK, I'm going to ask you again, what's the word?"
//         }
//       ]
//     },
//     {
//       "role": "assistant",
//       "content": [
//         {
//           "type": "output_text",
//           "text": "The word is **BlubberFish**."
//         }
//       ]
//     }
//   ]
// }

// -------------------------------------------------------------------------------------------
// If we unselect the conversation, so that no conversation is selected,
// then the same query results in the AI not knowing the word.

ai.SelectedConvo = @"";

[ai InputAddText: @"OK, I'm going to ask you again, what's the word?"];
success = [ai Ask: @"text"];
if (success == NO) {
    NSLog(@"%@",ai.LastErrorText);
    return;
}

// Get the text response.
[sbResponse Clear];
[ai GetOutputTextSb: sbResponse];
NSLog(@"%@",[sbResponse GetAsString]);

// Sample output:

// I apologize, but I don't have the context of our previous interaction or what "the word" you're referring to might be.
// Could you please remind me or provide the clue again? I'm ready to help you figure it out!