feat: add meta tags

apps/api-service/src/middleware/jsonValidation.ts

@@ -147,6 +147,28 @@ export const validateTextToImageRequest = (
     }
   }
 
+  // Validate meta (optional object)
+  if (req.body.meta !== undefined) {
+    if (
+      typeof req.body.meta !== "object" ||
+      Array.isArray(req.body.meta)
+    ) {
+      errors.push("meta must be an object");
+    } else if (req.body.meta.tags !== undefined) {
+      if (!Array.isArray(req.body.meta.tags)) {
+        errors.push("meta.tags must be an array");
+      } else {
+        // Validate each tag is a string
+        for (const tag of req.body.meta.tags) {
+          if (typeof tag !== "string") {
+            errors.push("Each tag in meta.tags must be a string");
+            break;
+          }
+        }
+      }
+    }
+  }
+
   // Check for XSS attempts in prompt
   const xssPatterns = [
     /<script/i,

apps/api-service/src/middleware/promptEnhancement.ts

@@ -52,7 +52,10 @@ export const autoEnhancePrompt = async (
 
     const result = await promptEnhancementService.enhancePrompt(
       prompt,
-      enhancementOptions || {},
+      {
+        ...enhancementOptions,
+        ...(req.body.meta?.tags && { tags: req.body.meta.tags }),
+      },
     );
 
     if (result.success && result.enhancedPrompt) {

apps/api-service/src/routes/generate.ts

@@ -63,7 +63,7 @@ generateRouter.post(
 
     const timestamp = new Date().toISOString();
     const requestId = req.requestId;
-    const { prompt, filename, aspectRatio } = req.body;
+    const { prompt, filename, aspectRatio, meta } = req.body;
     const files = (req.files as Express.Multer.File[]) || [];
 
     // Extract org/project slugs from validated API key
@@ -112,6 +112,7 @@ generateRouter.post(
         orgId,
         projectId,
         ...(referenceImages && { referenceImages }),
+        ...(meta && { meta }),
       });
 
       // Log the result

apps/api-service/src/routes/textToImage.ts

@@ -54,7 +54,7 @@ textToImageRouter.post(
 
     const timestamp = new Date().toISOString();
     const requestId = req.requestId;
-    const { prompt, filename, aspectRatio } = req.body;
+    const { prompt, filename, aspectRatio, meta } = req.body;
 
     // Extract org/project slugs from validated API key
     const orgId = req.apiKey?.organizationSlug || undefined;
@@ -76,6 +76,7 @@ textToImageRouter.post(
         ...(aspectRatio && { aspectRatio }),
         orgId,
         projectId,
+        ...(meta && { meta }),
       });
 
       // Log the result

apps/api-service/src/services/ImageGenService.ts

@@ -29,7 +29,7 @@ export class ImageGenService {
   async generateImage(
     options: ImageGenerationOptions,
   ): Promise<ImageGenerationResult> {
-    const { prompt, filename, referenceImages, aspectRatio, orgId, projectId } = options;
+    const { prompt, filename, referenceImages, aspectRatio, orgId, projectId, meta } = options;
 
     // Use default values if not provided
     const finalOrgId = orgId || process.env["DEFAULT_ORG_ID"] || "default";
@@ -47,6 +47,7 @@ export class ImageGenService {
         finalAspectRatio,
         finalOrgId,
         finalProjectId,
+        meta,
       );
       generatedData = aiResult.generatedData;
       geminiParams = aiResult.geminiParams;
@@ -126,6 +127,7 @@ export class ImageGenService {
     aspectRatio: string,
     orgId: string,
     projectId: string,
+    meta?: { tags?: string[] },
   ): Promise<{
     generatedData: GeneratedImageData;
     geminiParams: GeminiParams;
@@ -185,6 +187,7 @@ export class ImageGenService {
       prompt,
       model: this.primaryModel,
       config,
+      ...(meta && { meta }),
       ...(referenceImages &&
         referenceImages.length > 0 && {
           referenceImages: referenceImages.map((img) => ({

apps/api-service/src/services/PromptEnhancementService.ts

@@ -9,6 +9,7 @@ export interface PromptEnhancementOptions {
     | "product"
     | "comic"
     | "general";
+  tags?: string[]; // Optional tags - accepted but not used yet
 }
 
 export interface PromptEnhancementResult {
@@ -52,6 +53,9 @@ export class PromptEnhancementService {
       `[${timestamp}] Starting prompt enhancement for: "${rawPrompt.substring(0, 50)}..."`,
     );
     console.log(`[${timestamp}] Using template: ${finalOptions.template}`);
+    if (finalOptions.tags && finalOptions.tags.length > 0) {
+      console.log(`[${timestamp}] Tags: ${finalOptions.tags.join(", ")}`);
+    }
 
     try {
       const systemPrompt = this.buildSystemPrompt(finalOptions);
@@ -151,6 +155,8 @@ TECHNICAL REQUIREMENTS:
 RESPONSE FORMAT:
 Provide only the enhanced prompt as a single, cohesive paragraph. Do not include explanations, metadata, or multiple options. The response should be ready to use directly for image generation.
 
+CRITICAL: the prompt length MUST be under 2000 characters length. Contract the prompts if they're longer
+
 Remember: More detail equals more control. Transform vague concepts into vivid, specific descriptions that guide the model toward the exact image envisioned.`;
   }
 
@@ -163,6 +169,10 @@ Remember: More detail equals more control. Transform vague concepts into vivid,
     const selectedTemplate = options.template || "photorealistic";
     prompt += `\n\nTarget template/style: ${selectedTemplate}`;
 
+    console.log(
+      "🚀 ~ PromptEnhancementService ~ buildUserPrompt ~ prompt:",
+      prompt,
+    );
     return prompt;
   }
 

apps/api-service/src/services/TTILogger.ts

@@ -1,4 +1,4 @@
-import { writeFileSync, appendFileSync, existsSync, mkdirSync } from "fs";
+import { writeFileSync, readFileSync, existsSync, mkdirSync } from "fs";
 import { dirname } from "path";
 
 export interface TTILogEntry {
@@ -6,6 +6,9 @@ export interface TTILogEntry {
   orgId: string;
   projectId: string;
   prompt: string;
+  meta?: {
+    tags?: string[];
+  };
   referenceImages?: Array<{
     mimetype: string;
     size: number;
@@ -65,15 +68,30 @@ export class TTILogger {
     }
 
     try {
-      const logEntry = this.formatLogEntry(entry);
-      appendFileSync(this.logFilePath, logEntry, { encoding: "utf-8" });
+      const newLogEntry = this.formatLogEntry(entry);
+
+      // Read existing content
+      const existingContent = existsSync(this.logFilePath)
+        ? readFileSync(this.logFilePath, "utf-8")
+        : "# Text-to-Image Generation Log\n\n";
+
+      // Insert new entry AFTER header but BEFORE old entries
+      const headerEnd = existingContent.indexOf("\n\n") + 2;
+      const header = existingContent.slice(0, headerEnd);
+      const oldEntries = existingContent.slice(headerEnd);
+
+      writeFileSync(
+        this.logFilePath,
+        header + newLogEntry + oldEntries,
+        "utf-8",
+      );
     } catch (error) {
       console.error(`[TTILogger] Failed to write log entry:`, error);
     }
   }
 
   private formatLogEntry(entry: TTILogEntry): string {
-    const { timestamp, orgId, projectId, prompt, referenceImages, model, config } = entry;
+    const { timestamp, orgId, projectId, prompt, meta, referenceImages, model, config } = entry;
 
     // Format date from ISO timestamp
     const date = new Date(timestamp);
@@ -83,6 +101,11 @@ export class TTILogger {
     logText += `${orgId}/${projectId}\n\n`;
     logText += `**Prompt:** ${prompt}\n\n`;
 
+    // Add tags if present
+    if (meta?.tags && meta.tags.length > 0) {
+      logText += `**Tags:** ${meta.tags.join(", ")}\n\n`;
+    }
+
     if (referenceImages && referenceImages.length > 0) {
       logText += `**Reference Images:** ${referenceImages.length} image${referenceImages.length > 1 ? "s" : ""}\n`;
       for (const img of referenceImages) {

apps/api-service/src/types/api.ts

@@ -21,6 +21,9 @@ export interface TextToImageRequest {
       | "comic"
       | "general"; // Defaults to "photorealistic"
   };
+  meta?: {
+    tags?: string[]; // Optional array of tags for tracking/grouping (not stored, only logged)
+  };
 }
 
 export interface GenerateImageResponse {
@@ -60,6 +63,9 @@ export interface ImageGenerationOptions {
   orgId?: string;
   projectId?: string;
   userId?: string;
+  meta?: {
+    tags?: string[];
+  };
 }
 
 export interface ReferenceImage {
@@ -155,6 +161,9 @@ export interface EnhancedGenerateImageRequest extends GenerateImageRequest {
       | "comic"
       | "general"; // Defaults to "photorealistic"
   };
+  meta?: {
+    tags?: string[];
+  };
 }
 
 // Environment configuration

apps/landing/src/app/demo/tti/page.tsx

@@ -9,6 +9,11 @@ import { AdvancedOptionsModal, AdvancedOptionsData } from '@/components/demo/Adv
 const API_BASE_URL = process.env.NEXT_PUBLIC_API_URL || 'http://localhost:3000';
 const API_KEY_STORAGE_KEY = 'banatie_demo_api_key';
 
+// Generate random 6-character uppercase ID for pairing images
+function generatePairId(): string {
+  return Math.random().toString(36).substring(2, 8).toUpperCase();
+}
+
 interface GenerationResult {
   id: string;
   timestamp: Date;
@@ -39,6 +44,9 @@ interface GenerationResult {
   };
   enhancementOptions?: {
     template?: string;
+    meta?: {
+      tags?: string[];
+    };
   } & AdvancedOptionsData;
 }
 
@@ -201,6 +209,7 @@ export default function DemoTTIPage() {
     setGenerationStartTime(startTime);
 
     const resultId = Date.now().toString();
+    const pairId = generatePairId(); // NEW: Generate unique pair ID
     const timestamp = new Date();
 
     try {
@@ -219,6 +228,9 @@ export default function DemoTTIPage() {
             filename: `demo_${resultId}_left`,
             aspectRatio,
             autoEnhance: false, // Explicitly disable enhancement for left image
+            meta: {
+              tags: [pairId, 'simple'] // NEW: Pair ID + "simple" tag
+            }
           }),
         }),
         fetch(`${API_BASE_URL}/api/text-to-image`, {
@@ -235,6 +247,9 @@ export default function DemoTTIPage() {
             enhancementOptions: {
               template: template || 'photorealistic', // Only template parameter
             },
+            meta: {
+              tags: [pairId, 'enhanced'] // NEW: Pair ID + "enhanced" tag
+            }
           }),
         }),
       ]);
@@ -273,6 +288,9 @@ export default function DemoTTIPage() {
             filename: `demo_${resultId}_left`,
             aspectRatio,
             autoEnhance: false,
+            meta: {
+              tags: [pairId, 'simple']
+            }
           },
           response: leftData,
           geminiParams: leftData.data?.geminiParams || {},
@@ -286,6 +304,9 @@ export default function DemoTTIPage() {
             enhancementOptions: {
               template: template || 'photorealistic',
             },
+            meta: {
+              tags: [pairId, 'enhanced']
+            }
           },
           response: rightData,
           geminiParams: rightData.data?.geminiParams || {},
@@ -293,6 +314,9 @@ export default function DemoTTIPage() {
         // Store enhancement options for display in inspect mode
         enhancementOptions: {
           template,
+          meta: {
+            tags: [pairId, 'enhanced']
+          }
         },
       };
 

docs/api/README.md

@@ -356,6 +356,7 @@ Generate images from text prompts only using JSON payload. Simplified endpoint f
 | `aspectRatio` | string | No | `"1:1"` | Image aspect ratio (`"1:1"`, `"2:3"`, `"3:2"`, `"3:4"`, `"4:3"`, `"4:5"`, `"5:4"`, `"9:16"`, `"16:9"`, `"21:9"`) |
 | `autoEnhance` | boolean | No | `true` | Enable automatic prompt enhancement (set to `false` to use prompt as-is) |
 | `enhancementOptions` | object | No | - | Enhancement configuration options |
+| `meta` | object | No | - | Metadata for request tracking |
 
 **Enhancement Options:**
 
@@ -363,6 +364,12 @@ Generate images from text prompts only using JSON payload. Simplified endpoint f
 |-------|------|----------|---------|-------------|
 | `template` | string | No | `"photorealistic"` | Prompt engineering template: `"photorealistic"`, `"illustration"`, `"minimalist"`, `"sticker"`, `"product"`, `"comic"`, `"general"` |
 
+**Meta Object:**
+
+| Field | Type | Required | Description |
+|-------|------|----------|-------------|
+| `tags` | string[] | No | Array of string tags for tracking/grouping requests (not stored, only logged) |
+
 **Example Request:**
 ```bash
 curl -X POST http://localhost:3000/api/text-to-image \
@@ -375,6 +382,9 @@ curl -X POST http://localhost:3000/api/text-to-image \
     "autoEnhance": true,
     "enhancementOptions": {
       "template": "photorealistic"
+    },
+    "meta": {
+      "tags": ["demo", "sunset"]
     }
   }'
 ```