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HtmlEditor and Chat AI Demos: Create an AI service to make demo code more readable #32154

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e6e4b2e
refactor(htmleditor && chat): Angular
Jan 9, 2026
299799f
refactor(htmleditor && chat): React
Jan 9, 2026
3b254ce
fix(demos): Move files to the ai folder
Jan 9, 2026
6ad3c31
refactor(htmleditor && chat): Vue
Jan 9, 2026
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33 changes: 33 additions & 0 deletions apps/demos/Demos/Chat/AIAndChatbotIntegration/Angular/app/ai/ai.service.ts
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@@ -0,0 +1,33 @@
import { Injectable } from '@angular/core';
import { AzureOpenAI } from 'openai';

@Injectable()
export class AiService {
chatService: AzureOpenAI;

AzureOpenAIConfig = {
dangerouslyAllowBrowser: true,
deployment: 'gpt-4o-mini',
apiVersion: '2024-02-01',
endpoint: 'https://public-api.devexpress.com/demo-openai',
apiKey: 'DEMO',
};

constructor() {
this.chatService = new AzureOpenAI(this.AzureOpenAIConfig);
}

async getAIResponse(messages: any[]) {
const params = {
messages,
model: this.AzureOpenAIConfig.deployment,
max_tokens: 1000,
temperature: 0.7,
};

const response = await this.chatService.chat.completions.create(params);
const data = { choices: response.choices };

return data.choices[0].message?.content;
}
}
2 changes: 2 additions & 0 deletions apps/demos/Demos/Chat/AIAndChatbotIntegration/Angular/app/app.component.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@ import { Observable } from 'rxjs';
import { loadMessages } from 'devextreme-angular/common/core/localization';
import { DataSource } from 'devextreme-angular/common/data';
import { AppService } from './app.service';
import { AiService } from './ai/ai.service';

if (!/localhost/.test(document.location.host)) {
enableProdMode();
Expand Down Expand Up @@ -107,5 +108,6 @@ bootstrapApplication(AppComponent, {
providers: [
provideZoneChangeDetection({ eventCoalescing: true, runCoalescing: true }),
AppService,
AiService,
],
});
28 changes: 5 additions & 23 deletions apps/demos/Demos/Chat/AIAndChatbotIntegration/Angular/app/app.service.ts
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@@ -1,28 +1,20 @@
import { Injectable } from '@angular/core';
import { Observable, BehaviorSubject } from 'rxjs';
import { AzureOpenAI } from 'openai';
import { unified } from 'unified';
import remarkParse from 'remark-parse';
import remarkRehype from 'remark-rehype';
import rehypeStringify from 'rehype-stringify';
import rehypeMinifyWhitespace from 'rehype-minify-whitespace';
import { type DxChatTypes } from 'devextreme-angular/ui/chat';
import { DataSource, CustomStore } from 'devextreme-angular/common/data';
import { AiService } from './ai/ai.service';

@Injectable({
providedIn: 'root',
})

export class AppService {
chatService: AzureOpenAI;

AzureOpenAIConfig = {
dangerouslyAllowBrowser: true,
deployment: 'gpt-4o-mini',
apiVersion: '2024-02-01',
endpoint: 'https://public-api.devexpress.com/demo-openai',
apiKey: 'DEMO',
};
aiService: AiService;

REGENERATION_TEXT = 'Regeneration...';

Expand Down Expand Up @@ -51,8 +43,8 @@ export class AppService {

alertsSubject: BehaviorSubject<DxChatTypes.Alert[]> = new BehaviorSubject([]);

constructor() {
this.chatService = new AzureOpenAI(this.AzureOpenAIConfig);
constructor(aiService: AiService) {
this.aiService = aiService;
this.initDataSource();
this.typingUsersSubject.next([]);
this.alertsSubject.next([]);
Expand Down Expand Up @@ -99,17 +91,7 @@ export class AppService {
}

async getAIResponse(messages) {
const params = {
messages,
model: this.AzureOpenAIConfig.deployment,
max_tokens: 1000,
temperature: 0.7,
};

const response = await this.chatService.chat.completions.create(params);
const data = { choices: response.choices };

return data.choices[0].message?.content;
return this.aiService.getAIResponse(messages);
}

async processMessageSending(message) {
Expand Down
8 changes: 0 additions & 8 deletions apps/demos/Demos/Chat/AIAndChatbotIntegration/React/data.ts
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@@ -1,13 +1,5 @@
import type { ChatTypes } from 'devextreme-react/chat';

export const AzureOpenAIConfig = {
dangerouslyAllowBrowser: true,
deployment: 'gpt-4o-mini',
apiVersion: '2024-02-01',
endpoint: 'https://public-api.devexpress.com/demo-openai',
apiKey: 'DEMO',
};

export const REGENERATION_TEXT = 'Regeneration...';
export const CHAT_DISABLED_CLASS = 'chat-disabled';
export const ALERT_TIMEOUT = 1000 * 60;
Expand Down
41 changes: 41 additions & 0 deletions apps/demos/Demos/Chat/AIAndChatbotIntegration/React/service.ts
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@@ -0,0 +1,41 @@
import { AzureOpenAI, OpenAI } from 'openai';
import type { AIResponse } from 'devextreme/common/ai-integration';

type Message = (OpenAI.ChatCompletionUserMessageParam | OpenAI.ChatCompletionAssistantMessageParam) & {
content: string;
};

export const AzureOpenAIConfig = {
dangerouslyAllowBrowser: true,
deployment: 'gpt-4o-mini',
apiVersion: '2024-02-01',
endpoint: 'https://public-api.devexpress.com/demo-openai',
apiKey: 'DEMO',
};
Comment on lines +8 to +14
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Copilot AI Jan 9, 2026

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The AzureOpenAIConfig is exported but not used externally based on the data.ts changes. Remove the export keyword to avoid exposing internal implementation details.

Copilot uses AI. Check for mistakes.

const chatService = new AzureOpenAI(AzureOpenAIConfig);

const wait = (delay: number): Promise<void> =>
new Promise((resolve): void => {
setTimeout(resolve, delay);
});

export async function getAIResponse(messages: Message[], delay?: number): Promise<AIResponse> {
const params = {
messages,
model: AzureOpenAIConfig.deployment,
max_tokens: 1000,
temperature: 0.7,
};

const response = await chatService.chat.completions.create(params);
const data = { choices: response.choices };

if (delay) {
await wait(delay);
}

return data.choices[0].message?.content ?? '';
}

export type { Message };
34 changes: 2 additions & 32 deletions apps/demos/Demos/Chat/AIAndChatbotIntegration/React/useApi.ts
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Original file line number Diff line number Diff line change
@@ -1,43 +1,13 @@
import { useCallback, useState } from 'react';
import { AzureOpenAI, OpenAI } from 'openai';
import type { ChatTypes } from 'devextreme-react/chat';
import { CustomStore, DataSource } from 'devextreme-react/common/data';
import type { AIResponse } from 'devextreme/common/ai-integration';
import {
ALERT_TIMEOUT,
assistant,
AzureOpenAIConfig,
REGENERATION_TEXT,
} from './data.ts';

type Message = (OpenAI.ChatCompletionUserMessageParam | OpenAI.ChatCompletionAssistantMessageParam) & {
content: string;
};

const chatService = new AzureOpenAI(AzureOpenAIConfig);

const wait = (delay: number): Promise<void> =>
new Promise((resolve): void => {
setTimeout(resolve, delay);
});

export async function getAIResponse(messages: Message[], delay?: number): Promise<AIResponse> {
const params = {
messages,
model: AzureOpenAIConfig.deployment,
max_tokens: 1000,
temperature: 0.7,
};

const response = await chatService.chat.completions.create(params);
const data = { choices: response.choices };

if (delay) {
await wait(delay);
}

return data.choices[0].message?.content ?? '';
}
import { getAIResponse } from './service.ts';
import type { Message } from './service.ts';

const store: ChatTypes.Message[] = [];

Expand Down
7 changes: 0 additions & 7 deletions apps/demos/Demos/Chat/AIAndChatbotIntegration/ReactJs/data.js
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Original file line number Diff line number Diff line change
@@ -1,10 +1,3 @@
export const AzureOpenAIConfig = {
dangerouslyAllowBrowser: true,
deployment: 'gpt-4o-mini',
apiVersion: '2024-02-01',
endpoint: 'https://public-api.devexpress.com/demo-openai',
apiKey: 'DEMO',
};
export const REGENERATION_TEXT = 'Regeneration...';
export const CHAT_DISABLED_CLASS = 'chat-disabled';
export const ALERT_TIMEOUT = 1000 * 60;
Expand Down
28 changes: 28 additions & 0 deletions apps/demos/Demos/Chat/AIAndChatbotIntegration/ReactJs/service.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,28 @@
import { AzureOpenAI } from 'openai';

export const AzureOpenAIConfig = {
dangerouslyAllowBrowser: true,
deployment: 'gpt-4o-mini',
apiVersion: '2024-02-01',
endpoint: 'https://public-api.devexpress.com/demo-openai',
apiKey: 'DEMO',
};
Comment on lines +3 to +9
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Copilot AI Jan 9, 2026

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The reason will be displayed to describe this comment to others. Learn more.

The Chat demos export AzureOpenAIConfig from service files in ReactJs and React implementations, but this config is not used externally based on the data.js and useApi.js changes. The export should be removed to avoid exposing internal implementation details.

Copilot uses AI. Check for mistakes.
const chatService = new AzureOpenAI(AzureOpenAIConfig);
const wait = (delay) =>
new Promise((resolve) => {
setTimeout(resolve, delay);
});
export async function getAIResponse(messages, delay) {
const params = {
messages,
model: AzureOpenAIConfig.deployment,
max_tokens: 1000,
temperature: 0.7,
};
const response = await chatService.chat.completions.create(params);
const data = { choices: response.choices };
if (delay) {
await wait(delay);
}
return data.choices[0].message?.content ?? '';
}
25 changes: 2 additions & 23 deletions apps/demos/Demos/Chat/AIAndChatbotIntegration/ReactJs/useApi.js
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Original file line number Diff line number Diff line change
@@ -1,29 +1,8 @@
import { useCallback, useState } from 'react';
import { AzureOpenAI } from 'openai';
import { CustomStore, DataSource } from 'devextreme-react/common/data';
import {
ALERT_TIMEOUT, assistant, AzureOpenAIConfig, REGENERATION_TEXT,
} from './data.js';
import { ALERT_TIMEOUT, assistant, REGENERATION_TEXT } from './data.js';
import { getAIResponse } from './service.js';

const chatService = new AzureOpenAI(AzureOpenAIConfig);
const wait = (delay) =>
new Promise((resolve) => {
setTimeout(resolve, delay);
});
export async function getAIResponse(messages, delay) {
const params = {
messages,
model: AzureOpenAIConfig.deployment,
max_tokens: 1000,
temperature: 0.7,
};
const response = await chatService.chat.completions.create(params);
const data = { choices: response.choices };
if (delay) {
await wait(delay);
}
return data.choices[0].message?.content ?? '';
}
const store = [];
const customStore = new CustomStore({
key: 'id',
Expand Down
19 changes: 1 addition & 18 deletions apps/demos/Demos/Chat/AIAndChatbotIntegration/Vue/App.vue
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Expand Up @@ -49,7 +49,6 @@

<script setup lang="ts">
import { ref, onBeforeMount } from 'vue';
import { AzureOpenAI } from 'openai';
import DxChat, { type DxChatTypes } from 'devextreme-vue/chat';
import DxButton from 'devextreme-vue/button';
import { loadMessages } from 'devextreme-vue/common/core/localization';
Expand All @@ -62,12 +61,10 @@ import {
assistant,
dataSource,
convertToHtml,
AzureOpenAIConfig,
REGENERATION_TEXT,
ALERT_TIMEOUT,
} from './data.ts';

const chatService = new AzureOpenAI(AzureOpenAIConfig);
import { getAIResponse } from './service.ts';

const typingUsers = ref<{ id: string, name: string }[]>([]);
const alerts = ref<{ message: string }[]>([]);
Expand All @@ -78,20 +75,6 @@ onBeforeMount(() => {
loadMessages(dictionary);
});

async function getAIResponse(messages: DxChatTypes.Message[]): Promise<string> {
const params: Record<string, any> = {
messages,
model: AzureOpenAIConfig.deployment,
max_tokens: 1000,
temperature: 0.7,
};

const response = await chatService.chat.completions.create(params as any);
const data = { choices: response.choices };

return data.choices[0].message?.content || '';
}

function toggleDisabledState(disabled: boolean, event?: Events.EventObject): void {
isDisabled.value = disabled;

Expand Down
8 changes: 0 additions & 8 deletions apps/demos/Demos/Chat/AIAndChatbotIntegration/Vue/data.ts
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Expand Up @@ -14,14 +14,6 @@ export const dictionary = {
},
};

export const AzureOpenAIConfig = {
dangerouslyAllowBrowser: true,
deployment: 'gpt-4o-mini',
apiVersion: '2024-02-01',
endpoint: 'https://public-api.devexpress.com/demo-openai',
apiKey: 'DEMO',
};

export const REGENERATION_TEXT = 'Regeneration...';
export const CHAT_DISABLED_CLASS = 'chat-disabled';
export const ALERT_TIMEOUT = 1000 * 60;
Expand Down
26 changes: 26 additions & 0 deletions apps/demos/Demos/Chat/AIAndChatbotIntegration/Vue/service.ts
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Original file line number Diff line number Diff line change
@@ -0,0 +1,26 @@
import { AzureOpenAI } from 'openai';
import { type DxChatTypes } from 'devextreme-vue/chat';

const AzureOpenAIConfig = {
dangerouslyAllowBrowser: true,
deployment: 'gpt-4o-mini',
apiVersion: '2024-02-01',
endpoint: 'https://public-api.devexpress.com/demo-openai',
apiKey: 'DEMO',
};

const chatService = new AzureOpenAI(AzureOpenAIConfig);

export async function getAIResponse(messages: DxChatTypes.Message[]): Promise<string> {
const params: Record<string, any> = {
messages,
model: AzureOpenAIConfig.deployment,
max_tokens: 1000,
temperature: 0.7,
};

const response = await chatService.chat.completions.create(params as any);
const data = { choices: response.choices };

return data.choices[0].message?.content || '';
}
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