128 lines
2.5 KiB
Markdown
128 lines
2.5 KiB
Markdown
# Perspective Submission Service
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This module implements the perspective submission service for VoxPop, allowing users to submit perspectives on issues with rate limiting and security measures for unverified users.
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## Design
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The system is built around the following components:
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1. **PerspectiveService**: Handles the business logic for perspective submissions
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2. **PerspectiveHandler**: Exposes the HTTP API endpoint
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3. **Rate Limiting**: Uses Redis for tracking submission counts
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## API Endpoints
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### Submit Perspective
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**Endpoint**: `POST /submit-perspective`
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**Request Body**:
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```json
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{
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"issueId": "issue-12345",
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"text": "This is my perspective on the issue.",
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"fileURL": "http://example.com/document.pdf",
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"userAddress": "0x1234567890abcdef",
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"isVerified": false,
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"captchaToken": "valid-token"
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}
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```
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**Response**:
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```json
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{
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"success": true,
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"hash": "QmHash123issu"
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}
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```
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## Features
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### Text Validation
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- Maximum text length: 1000 characters
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- Sanitizes input to prevent injection attacks
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### File Validation
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- Maximum file size: 5MB
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- Currently mocked in the implementation
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### Unverified Users
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- Limited to 5 submissions per day
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- Must provide a valid CAPTCHA token
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- Error response if rate limit exceeded:
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```json
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{
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"success": false,
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"error": "Rate limit exceeded. Maximum 5 submissions per day for unverified users."
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}
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```
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### IPFS Storage
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- Uploads content to IPFS via Pinata (currently mocked)
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- Returns an IPFS hash for the content
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## Configuration
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The service requires Redis for rate limiting:
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- `REDIS_ADDR`: Redis server address (default: "localhost:6379")
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- `REDIS_PASSWORD`: Redis password (default: "")
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- `REDIS_DB`: Redis database number (default: 0)
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## Example Usage
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### Verified User
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```json
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// Request
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{
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"issueId": "issue-12345",
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"text": "This is my perspective on the issue.",
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"fileURL": "http://example.com/document.pdf",
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"userAddress": "0x1234567890abcdef",
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"isVerified": true
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}
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// Response
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{
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"success": true,
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"hash": "QmHash123issu"
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}
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```
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### Unverified User (with CAPTCHA)
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```json
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// Request
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{
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"issueId": "issue-12345",
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"text": "This is my perspective on the issue.",
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"userAddress": "0x1234567890abcdef",
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"isVerified": false,
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"captchaToken": "valid-token"
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}
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// Response
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{
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"success": true,
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"hash": "QmHash123issu"
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}
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```
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### Rate Limit Exceeded
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```json
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// Response (HTTP 429)
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{
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"success": false,
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"error": "Rate limit exceeded. Maximum 5 submissions per day for unverified users."
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}
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```
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## Testing
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Run the tests with:
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```bash
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go test ./perspective
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``` |