feat: image generation

[Bran18]

Summary by Sourcery

Implement end-to-end AI image generation in chat by adding prompt creation, message handling, and UI components for displaying and downloading generated images.

New Features:

• Add ImageGeneratorDialog component for users to configure and send image generation prompts.
• Introduce GeneratedImage component to render base64-encoded images with loading state and download functionality.
• Add helper functions to detect and extract image files and content from AI messages.

Enhancements:

• Extend MBChat hook to include image parts in messages and show notifications when images are generated.
• Include 'IMAGE' in API response modalities and update AI model enum to add Gemini_Flash_Pro and rename an entry.
• Define IMAGE_GENERATION_PROMPT_TEMPLATE and createImageGenerationPrompt utility for constructing dynamic image prompts.

Summary by CodeRabbit

• New Features

  • Introduced support for AI-generated images in chat messages, allowing both text and image responses.
  • Added an image generator dialog for users to create images with customizable description, style, and detail options.
  • Users can view, download, and interact with AI-generated images directly within chat messages.

• Improvements

  • Enhanced model selection with new and corrected AI model options.
  • Improved handling and display of image content in chat.
  • Disabled "Preferences" link outside of dev mode to prevent unintended access.

• Bug Fixes

  • Corrected naming for AI model entries to ensure accurate model selection.

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
masterbots	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 14, 2025 7:56pm

[sourcery-ai]

Reviewer's Guide

This PR adds end-to-end support for AI image generation by introducing file extraction utilities, updating the chat hook and API calls to handle image modalities, extending model definitions, and adding UI components for prompt creation and image rendering/downloading.

Sequence Diagram: AI Image Generation Flow

sequenceDiagram
    actor User
    participant Dialog as ImageGeneratorDialog
    participant ChatHook as useMBChat
    participant AIService as AI Service (Google Gemini)
    participant ChatMsg as ChatMessage

    User->>Dialog: Opens Image Generation Dialog
    User->>Dialog: Enters description, style, details
    User->>Dialog: Clicks "Generate"
    Dialog->>ChatHook: appendWithMbContextPrompts(prompt)
    ChatHook->>AIService: createResponseStream(prompt, {responseModalities: ['TEXT', 'IMAGE']})
    AIService-->>ChatHook: Image data in response
    ChatHook->>ChatMsg: Updates message with image parts
    ChatMsg->>User: Displays generated image

Loading

File-Level Changes

Change	Details	Files
Added image helper functions to extract and detect image files	Implemented extractImageFiles to filter and map image file objects Added hasImageGeneration to check message parts for image files Created extractImageContent to retrieve image parts from messages	apps/masterbots.ai/lib/helpers/ai-helpers.ts
Enhanced chat provider to include generated image parts	Mapped options.files into message.parts as image entries Displayed dev-mode notification when images are generated Prepared commented-out API payload for image files	apps/masterbots.ai/lib/hooks/use-mb-chat.tsx
Integrated image rendering into chat messages	Defined ImagesSection component using helper utilities Inserted after message content Conditionally rendered GeneratedImage for each image part	apps/masterbots.ai/components/routes/chat/chat-message.tsx
Introduced prompt template and helper for image generation	Added IMAGE_GENERATION_PROMPT_TEMPLATE constant Implemented createImageGenerationPrompt to substitute template variables	apps/masterbots.ai/lib/constants/prompts.ts
Extended and corrected AI model enum entries for image support	Renamed Gemini_Flash_Lite key to use consistent hyphens Added new Gemini_Flash_Pro entry	apps/masterbots.ai/app/api/chat/models/models.ts
Enabled image modality in AI API request options	Added responseModalities: ['TEXT', 'IMAGE'] under google options	apps/masterbots.ai/app/actions/ai-main-call.ts
Added ImageGeneratorDialog component for user-driven prompt creation	Created dialog UI with inputs for description, style, and details Used createImageGenerationPrompt and useMBChat to dispatch prompt Toggled dialog open state and trigger via button	apps/masterbots.ai/components/shared/image-generator-dialog.tsx
Added GeneratedImage component for displaying and downloading images	Implemented loading placeholder until image loads Rendered base64 image using next/image and aspect-video container Provided download functionality extracting file extension from MIME type	apps/masterbots.ai/components/shared/generated-image.tsx

---

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[coderabbitai]

Walkthrough

This update introduces support for AI-generated image handling in chat messages. It adds new helper functions for image extraction, updates the chat message UI to render images, introduces an image generator dialog, and expands model and provider options to include image modalities. Supporting prompt templates and download functionality are also implemented. Additionally, the chat hook is enhanced to attach generated image files to messages, and UI improvements include conditional disabling of the Preferences link based on dev mode.

Changes

Files/Paths	Change Summary
apps/masterbots.ai/app/actions/ai-main-call.ts	Adds responseModalities: ['TEXT', 'IMAGE'] to Google provider options for Gemini client in createResponseStream.
apps/masterbots.ai/app/api/chat/models/models.ts	Updates AIModels enum: corrects Gemini_Flash_Lite value and adds Gemini_Flash_Pro.
apps/masterbots.ai/components/routes/chat/chat-message.tsx	Adds ImagesSection to render AI-generated images in chat messages using new helpers and image component.
apps/masterbots.ai/components/routes/chat/chat-panel.tsx	Adds a blank line after imports; no functional change.
apps/masterbots.ai/components/shared/generated-image.tsx	Introduces GeneratedImage component to display and download AI-generated images.
apps/masterbots.ai/components/shared/image-generator-dialog.tsx	Adds ImageGeneratorDialog component for user-driven image prompt creation and submission.
apps/masterbots.ai/lib/constants/prompts.ts	Adds IMAGE_GENERATION_PROMPT_TEMPLATE and createImageGenerationPrompt for image prompt construction.
apps/masterbots.ai/lib/helpers/ai-helpers.ts	Adds helpers: extractImageFiles, hasImageGeneration, and extractImageContent for image file handling in messages.
apps/masterbots.ai/lib/hooks/use-mb-chat.tsx	Updates chat hook to handle and attach generated image files to messages on finish.
apps/masterbots.ai/components/layout/header/user-menu.tsx	Conditionally disables "Preferences" link outside dev mode by adjusting href, styling, and click behavior.

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant ImageGeneratorDialog
    participant useMBChat
    participant ChatMessage
    participant GeneratedImage

    User->>ImageGeneratorDialog: Click "Generate Image"
    ImageGeneratorDialog->>ImageGeneratorDialog: Collect description, style, details
    ImageGeneratorDialog->>useMBChat: Submit generated prompt as chat input
    useMBChat->>useMBChat: Process AI response (text + image files)
    useMBChat->>ChatMessage: Pass message with image parts
    ChatMessage->>GeneratedImage: Render each image part
    GeneratedImage->>User: Display image and download option

Loading

Poem

A bunny hopped and coded with glee,
Now AI draws what you wish to see!
With prompts for style and dazzling light,
Images appear—what a delight!
Download and share, let your visions take flight,
Thanks to this patch, your chats shine bright.
🖼️✨

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[coderabbitai]

Actionable comments posted: 4

🧹 Nitpick comments (7)

apps/masterbots.ai/lib/constants/prompts.ts (1)

228-240: Well-structured image generation prompt template implementation.

The template string for image generation and its helper function are clean and straightforward. The TODO comment indicates this is intended for a pro version.

Consider using a more robust templating solution instead of simple string replacement to handle special characters in inputs. For example:

-export function createImageGenerationPrompt(
-	description: string,
-	style: string,
-	details: string,
-) {
-	return IMAGE_GENERATION_PROMPT_TEMPLATE.replace('{description}', description)
-		.replace('{style}', style)
-		.replace('{details}', details)
-}
+export function createImageGenerationPrompt(
+	description: string,
+	style: string,
+	details: string,
+) {
+	return IMAGE_GENERATION_PROMPT_TEMPLATE
+		.replace(/\{description\}/g, description)
+		.replace(/\{style\}/g, style)
+		.replace(/\{details\}/g, details)
+}

apps/masterbots.ai/components/shared/image-generator-dialog.tsx (6)

32-43: Add form reset after generation.

The handleGenerate function handles validation and prompt generation well, but doesn't reset the form fields after closing the dialog. Users might be confused when reopening the dialog and seeing their previous inputs.

  const handleGenerate = () => {
    if (!description.trim()) return

    const prompt = createImageGenerationPrompt(description, style, details)
    setInput(prompt)
    appendWithMbContextPrompts({
      role: 'user',
      content: prompt,
    })

    setIsOpen(false)
+   setDescription('')
  }

---

57-66: Add visual validation feedback for the description field.

While there's validation logic to prevent empty submissions, there's no visual feedback to the user. Consider adding error state to the input field.

+ const [error, setError] = useState('')

  const handleGenerate = () => {
-   if (!description.trim()) return
+   if (!description.trim()) {
+     setError('Please enter a description')
+     return
+   }
+   setError('')
    // rest of the function...
  }

  // In the JSX:
  <div className="space-y-2">
    <Label htmlFor="description">Description</Label>
    <Input
      id="description"
      placeholder="A cat wearing a space suit on the moon"
      value={description}
      onChange={(e) => setDescription(e.target.value)}
+     className={error ? "border-red-500" : ""}
    />
+   {error && <p className="text-sm text-red-500">{error}</p>}
  </div>

---

45-56: Add keyboard support for dialog submission.

For better accessibility, implement keyboard support to allow users to submit by pressing Enter when focused on the description field.

  <Input
    id="description"
    placeholder="A cat wearing a space suit on the moon"
    value={description}
    onChange={(e) => setDescription(e.target.value)}
+   onKeyDown={(e) => {
+     if (e.key === 'Enter' && description.trim()) {
+       e.preventDefault();
+       handleGenerate();
+     }
+   }}
  />

---

105-105: Add loading state to Generate button.

Consider adding a loading state to provide feedback during image generation, especially if it takes some time to process.

+ const [isLoading, setIsLoading] = useState(false)

  const handleGenerate = async () => {
    if (!description.trim()) return
+   setIsLoading(true)

    const prompt = createImageGenerationPrompt(description, style, details)
    setInput(prompt)
    appendWithMbContextPrompts({
      role: 'user',
      content: prompt,
    })

+   // If there's any async operation, await it here
+   setIsLoading(false)
    setIsOpen(false)
  }

  // In the JSX:
- <Button onClick={handleGenerate}>Generate</Button>
+ <Button onClick={handleGenerate} disabled={isLoading}>
+   {isLoading ? "Generating..." : "Generate"}
+ </Button>

---

23-24: Tag TODO with ownership and timeline.

The TODO comment would be more helpful with ownership and timeline information.

- // TODO:  Use this image generation dialog base for the pro version.
+ // TODO(Bran18): Use this image generation dialog base for the pro version. [Q3 2025]

---

67-103: Consider adding custom style and detail options.

The dropdown selections for style and detail are comprehensive but don't allow for custom inputs. For creative users, consider adding an "Other" option with a custom text input.

This would require additional state management and conditional rendering, but would offer more flexibility for advanced users.

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 9df44c0 and f681c7c.

📒 Files selected for processing (9)

• apps/masterbots.ai/app/actions/ai-main-call.ts (1 hunks)
• apps/masterbots.ai/app/api/chat/models/models.ts (1 hunks)
• apps/masterbots.ai/components/routes/chat/chat-message.tsx (5 hunks)
• apps/masterbots.ai/components/routes/chat/chat-panel.tsx (1 hunks)
• apps/masterbots.ai/components/shared/generated-image.tsx (1 hunks)
• apps/masterbots.ai/components/shared/image-generator-dialog.tsx (1 hunks)
• apps/masterbots.ai/lib/constants/prompts.ts (1 hunks)
• apps/masterbots.ai/lib/helpers/ai-helpers.ts (1 hunks)
• apps/masterbots.ai/lib/hooks/use-mb-chat.tsx (2 hunks)

🧰 Additional context used

🧬 Code Graph Analysis (1)

apps/masterbots.ai/lib/helpers/ai-helpers.ts (1)

packages/mb-genql/generated/schema.ts (1)

• Message (906-934)

🔇 Additional comments (11)

apps/masterbots.ai/components/routes/chat/chat-panel.tsx (1)

28-28: Clean code formatting with proper section separation.

Adding this blank line improves code readability by creating clear visual separation between import statements and interface declarations.

apps/masterbots.ai/app/actions/ai-main-call.ts (1)

462-462: Good addition of image response capability for Gemini.

The addition of responseModalities: ['TEXT', 'IMAGE'] properly configures the Google Generative AI provider to return both text and image responses, which is essential for the new image generation feature.

apps/masterbots.ai/app/api/chat/models/models.ts (1)

13-14: Good model identifier updates for Gemini.

These changes correctly:

1. Fix the Gemini_Flash_Lite model identifier formatting from underscore to hyphen notation
2. Add support for the new Gemini_Flash_Pro model with image generation capabilities

These updates are essential for proper integration with Google's API and for supporting the new image generation feature.

apps/masterbots.ai/lib/hooks/use-mb-chat.tsx (2)

272-294: Well-implemented image file handling in chat responses.

This implementation properly processes image files returned by the AI model:

• Checks for the presence of files before processing
• Maps each file to the correct format with all necessary properties
• Includes helpful dev-mode notifications for testing

The code successfully adds image support to the chat message structure, enabling the rendering of AI-generated images in the chat UI.

---

439-441: Good practice with clear TODO comment.

The commented placeholder is well-documented with specific assignees (@Bran18 and @andlerdev), providing clear guidance on future backend integration for image files.

apps/masterbots.ai/components/routes/chat/chat-message.tsx (2)

109-127: Good implementation of image rendering in chat messages.

The ImagesSection component properly checks for image content before rendering and maps through the extracted images.

---

147-147: Appropriate integration of the ImagesSection component.

The component is well-positioned in the UI flow, placed directly after the markdown content.

apps/masterbots.ai/lib/helpers/ai-helpers.ts (1)

315-323: Well-implemented image detection helper.

This function correctly checks for image files in message parts.

apps/masterbots.ai/components/shared/generated-image.tsx (1)

6-11: Good interface definition for GeneratedImage props.

The interface clearly defines the required and optional properties.

apps/masterbots.ai/components/shared/image-generator-dialog.tsx (2)

25-31: Good component setup with appropriate state management.

The component is well-structured with appropriate state initialization for the dialog functionality. The use of the useMBChat hook provides good integration with the chat context.

---

1-22: Good organization of imports.

The imports are well-organized, with React hooks, UI components, utilities, and icons clearly separated.

[sourcery-ai]

Hey @Bran18 - I've reviewed your changes - here's some feedback:

• Avoid using any in extractImageFiles and message part definitions—define explicit TypeScript interfaces for your file and message-part objects and ensure you consistently use the same type value (e.g. stick to 'file') so your hasImageGeneration, extractImageContent, and rendering logic align.
• Refactor extractImageContent to always return an array (empty if no images) instead of null or undefined—that way your UI components can skip null checks and just render based on array length.

Here's what I looked at during the review

• 🟡 General issues: 2 issues found
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Documentation: all looks good

---

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[coderabbitai]

Actionable comments posted: 0

🧹 Nitpick comments (2)

apps/masterbots.ai/components/layout/header/user-menu.tsx (2)

116-116: CSS class reordering for consistency.

The class order was changed from "text-xs w-full" to "w-full text-xs" for better consistency with the styling approach used throughout the codebase. This improves maintainability without affecting functionality.

---

174-174: CSS class reordering for consistent styling patterns.

The class order was changed from "flex w-full gap-4 justify-between px-2 text-sm cursor-pointer" to "flex justify-between w-full gap-4 px-2 text-sm cursor-pointer" to maintain a consistent property ordering pattern throughout the codebase. This improves code readability and maintainability.

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Lite

📥 Commits

Reviewing files that changed from the base of the PR and between f681c7c and 5ed5168.

📒 Files selected for processing (2)

• apps/masterbots.ai/app/actions/ai-main-call.ts (1 hunks)
• apps/masterbots.ai/components/layout/header/user-menu.tsx (3 hunks)

✅ Files skipped from review due to trivial changes (1)

• apps/masterbots.ai/app/actions/ai-main-call.ts

🧰 Additional context used

🧬 Code Graph Analysis (1)

apps/masterbots.ai/components/layout/header/user-menu.tsx (1)

packages/mb-env/src/config.env.ts (1)

• appConfig (2-51)

🔇 Additional comments (1)

apps/masterbots.ai/components/layout/header/user-menu.tsx (1)

131-143: Good implementation of conditional feature access.

This change properly disables the Preferences link when not in development mode using three coordinated techniques:

1. Conditional href that prevents navigation when devMode is off
2. Visual indication through CSS classes for disabled state
3. Event handler to prevent navigation attempts

This maintains UI consistency while properly restricting access to development features.

[AndlerRL]

Brandon Development Support - May 2025, 1 of 2

[AndlerRL]

Brandon Development Support - May 2025, 2 of 2