chore: add new feature for the ai generate template

src/modules/ai-assistant/services/ai-assistant.service.ts

@@ -5,10 +5,11 @@ import { AiService } from "./ai.service";
 import { AiMessage } from "../../../common/enums/message.enum";
 import { MessageDetails } from "../../mail-server/interfaces/messages-response.interface";
 import { WildDuckMessagesService } from "../../mail-server/services/wildduck-messages.service";
+import { GenerateTemplateDto, TemplatePurposeEnum, TemplateStyleEnum, TemplateThemeEnum } from "../DTO/generate-template.dto";
 import { SummarizeEmailDto } from "../DTO/summarize-email.dto";
 import { WriteEmailAssistanceDto } from "../DTO/write-email-assistance.dto";
 import { SummaryLengthEnum, SummaryToneEnum } from "../enums/ai.enum";
-import { IEmailData, SummarizationOptions } from "../interfaces/ai-service.interface";
+import { IEmailData, ITemplateGenerationRequest, SummarizationOptions, TemplateGenerationOptions } from "../interfaces/ai-service.interface";
 
 @Injectable()
 export class AiAssistantService {
@@ -37,6 +38,51 @@ export class AiAssistantService {
     return { assistance };
   }
 
+  //************************************************* */
+  async generateTemplate(generateTemplateDto: GenerateTemplateDto) {
+    if (!generateTemplateDto.description?.trim()) {
+      throw new BadRequestException(AiMessage.DESCRIPTION_IS_REQUIRED);
+    }
+
+    const templateRequest: ITemplateGenerationRequest = {
+      description: generateTemplateDto.description.trim(),
+      options: this.buildTemplateGenerationOptions(generateTemplateDto),
+    };
+
+    const aiResponse = await this.aiService.generateTemplate(templateRequest);
+
+    return {
+      template: {
+        name: aiResponse.templateName,
+        description: aiResponse.description,
+        structure: aiResponse.structure,
+        rawHtml: aiResponse.rawHtml,
+        colorScheme: aiResponse.colorScheme,
+      },
+      designInsights: {
+        designPrinciples: aiResponse.designPrinciples,
+        suggestedImprovements: aiResponse.suggestedImprovements,
+      },
+      metadata: {
+        theme: generateTemplateDto.theme || TemplateThemeEnum.MODERN,
+        style: generateTemplateDto.style || TemplateStyleEnum.PROFESSIONAL,
+        purpose: generateTemplateDto.purpose || TemplatePurposeEnum.GENERAL,
+        generatedAt: new Date().toISOString(),
+      },
+    };
+  }
+
+  //************************************************* */
+  private buildTemplateGenerationOptions(dto: GenerateTemplateDto): TemplateGenerationOptions {
+    return {
+      theme: dto.theme,
+      style: dto.style,
+      purpose: dto.purpose,
+      templateName: dto.templateName,
+      preferredColors: dto.preferredColors,
+    };
+  }
+
   //************************************************* */
   private extractEmailData(message: MessageDetails) {
     return {