8.7 KiB
Image Description AI - Implementation Tasks
Task 1: Create Basic HTML Structure and Styling Foundation
Objective: Establish the foundational HTML structure with semantic markup and responsive CSS framework Deliverables:
- Complete HTML skeleton with proper DOCTYPE and meta tags
- Responsive CSS Grid layout system for the main application container
- Modern color scheme implementation (blues/grays as specified)
- Typography system with readable fonts and proper spacing
- Mobile-first responsive breakpoints
Acceptance Criteria:
- HTML validates as HTML5 standard
- Layout is responsive across mobile (320px+), tablet (768px+), and desktop (1024px+)
- Color scheme uses professional blue/gray palette with proper contrast ratios
- Typography is legible across all device sizes
- Basic layout structure includes: header, main upload area, preview section, results section
- CSS is modular with clear section organization (layout, components, utilities)
Task 2: Implement File Upload Interface with Drag & Drop
Objective: Create an intuitive file upload interface supporting both drag-and-drop and click-to-browse functionality Deliverables:
- Drag-and-drop zone with visual feedback states (drag over, drop, default)
- Hidden file input element for click-to-browse functionality
- Visual upload area with icon, instructional text, and file format specifications
- File type icon display for different image formats
- Hover and focus states for accessibility
Acceptance Criteria:
- Drag-and-drop zone visually responds to drag events with proper styling
- Click-to-browse opens file dialog and triggers file selection
- Upload area shows clear instructions: "Drag an image here or click to browse"
- Supported formats are displayed: JPG, PNG, WebP
- Accessibility: Keyboard navigation and screen reader support
- Visual feedback on hover/focus with smooth transitions
Task 3: Add File Validation and Error Handling System
Objective: Implement comprehensive file validation to ensure only valid images are processed Deliverables:
- File type validation (accept only jpg, jpeg, png, webp)
- File size validation (maximum 5MB with user-friendly error messages)
- Validation feedback system with clear error messages
- File metadata extraction (name, size, type)
- Reset functionality to clear errors and start over
Acceptance Criteria:
- Invalid file types show error: "Please select a valid image file (JPG, PNG, WebP)"
- Files over 5MB show error: "File size must be less than 5MB"
- Error messages display in red text below upload area
- Successful validation clears previous errors
- Validation occurs immediately upon file selection
- Files with valid extensions but invalid content are caught
- Reset button clears all errors and upload area state
Task 4: Implement Image Preview Functionality
Objective: Display uploaded image with proper sizing and formatting for user confirmation Deliverables:
- Image preview container with proper aspect ratio handling
- Image resizing and optimization for preview (max 400px width/height)
- Base64 encoding of the selected image for API submission
- Metadata display (filename, file size, dimensions)
- Replace/change image functionality
Acceptance Criteria:
- Image preview displays within 2 seconds of file selection
- Preview maintains aspect ratio without distortion
- Large images are scaled appropriately for preview
- Base64 encoding completes successfully and is stored in memory
- Image metadata is extracted and displayed (filename, size in MB, dimensions)
- "Change Image" button allows uploading a different file
- Preview clears when starting over
Task 5: Integrate Minimax API for Image Description Generation
Objective: Connect to Minimax API and implement the core AI description generation functionality Deliverables:
- API request construction with proper payload format
- Base64 image embedding in the request body
- Proper error handling for network issues and API responses
- Response parsing and extraction of the AI-generated description
- API key management (client-side with security notes)
Acceptance Criteria:
- API request uses correct endpoint:
https://api.minimax.io/v1/text/chatcompletion_v2 - Request payload includes model: "MiniMax-M2"
- Base64 image is properly formatted in the messages array
- Prompt "Please provide a detailed description of this image in English" is included
- Successful API response extracts the description text
- API errors are handled gracefully with user-friendly messages
- Network timeouts are handled with appropriate error messaging
- Loading state is shown during API calls
Task 6: Create Loading States and User Feedback System
Objective: Implement comprehensive loading and feedback mechanisms to enhance user experience Deliverables:
- Loading spinner and progress indicator during API calls
- Status messages for different processing stages
- Button state management (disabled during processing)
- Timeout handling with user notification
- Success and error state animations
Acceptance Criteria:
- Loading spinner appears immediately when "Generate Description" is clicked
- "Generate Description" button is disabled during processing to prevent duplicate requests
- Status message shows: "Analyzing image with AI..."
- Processing timeout (30 seconds) shows: "Processing is taking longer than expected"
- Success animation plays when description is generated
- Error state shows appropriate error message with red styling
- Loading states have smooth transitions and professional appearance
Task 7: Display AI Description Results with Formatting
Objective: Present the AI-generated description in a clean, readable format with additional functionality Deliverables:
- Results display area with proper typography and spacing
- Text formatting and paragraph handling for long descriptions
- Option to copy description to clipboard
- "Generate New Description" functionality for the same image
- "Upload New Image" reset functionality
- Responsive results layout
Acceptance Criteria:
- Description displays in a readable format with proper line breaks
- Long descriptions are scrollable if they exceed viewport
- "Copy to Clipboard" button works and shows confirmation
- "Generate New Description" button triggers new API call
- "Upload New Image" button clears all data and returns to upload state
- Results area is visually distinct from upload area
- Typography is large enough to read comfortably on mobile devices
Task 8: Final Polish, Testing, and Production Readiness
Objective: Complete final testing, optimizations, and prepare for immediate browser deployment Deliverables:
- Comprehensive error handling for all edge cases
- Performance optimization for large images and slow networks
- Cross-browser compatibility testing
- Accessibility improvements (ARIA labels, keyboard navigation)
- Final code organization and documentation
- Single HTML file consolidation with inline CSS and JavaScript
Acceptance Criteria:
- Application works in Chrome, Firefox, Safari, and Edge
- All functionality works on mobile devices (iOS and Android)
- Images up to 5MB process within 30 seconds on average connections
- Clear error messages for all failure scenarios (network, API, validation)
- Complete keyboard navigation support
- ARIA labels and semantic HTML for screen readers
- No console errors or warnings
- Single HTML file contains all code and loads immediately in any modern browser
- Professional appearance with smooth animations and transitions
- File size under 50KB for fast loading
Implementation Notes
Task Dependencies
- Tasks 1-2 can be implemented in parallel
- Task 3 depends on Task 2 (validation needs upload interface)
- Task 4 depends on Task 3 (preview needs validation)
- Task 5 depends on Task 4 (API needs base64 image)
- Task 6 depends on Task 5 (loading states during API calls)
- Task 7 depends on Task 6 (results display after processing)
- Task 8 depends on all previous tasks (final testing and polish)
Technical Considerations
- Use vanilla JavaScript ES6+ features for modern browser support
- Implement CSS custom properties for maintainable theming
- Follow progressive enhancement principles
- Maintain separation of concerns within the single file
- Include comprehensive error boundaries
Testing Approach
- Test with various image sizes and formats
- Test error scenarios (large files, invalid types, network issues)
- Verify responsive behavior across devices
- Validate accessibility with screen readers
- Performance test with slow network connections