feat: update configuration for OpenAI and Anthropic endpoints

- Created a new .env.example file with default environment variables for PORT, OPENAI_UPSTREAM_URL, ANTHROPIC_UPSTREAM_URL, and DATABASE_URL.
- Updated .npmignore to exclude all .env files except .env.example.
- Revised CONTRIBUTING.md to simplify the contribution process and provide clearer setup instructions.
- Enhanced cost.ts with detailed type definitions and improved cost calculation logic.
- Updated proxy.ts to include new environment variables and improved logging functionality.
- Modified README.md to reflect new configuration instructions and usage examples.
- Removed unnecessary dashboard files and streamlined the project structure.

dashboard/.env.example

@@ -1,5 +0,0 @@
-# PostgreSQL connection string (same as proxy server)
-DATABASE_URL=postgresql://user:password@localhost:5432/database
-
-# Database table name (default: llm_proxy)
-DATABASE_TABLE=llm_proxy

dashboard/README.md

@@ -1,195 +0,0 @@
-# OpenProxy Metrics Dashboard
-
-A lightweight Next.js dashboard for visualizing OpenProxy LLM request metrics in real-time.
-
-## Features
-
-- **Real-time Metrics Overview**: Total requests, tokens, costs, and response times
-- **Model Breakdown**: Usage statistics grouped by LLM model
-- **Hourly Trends**: Visual charts showing request patterns over time
-- **Recent Requests**: Detailed table of recent API calls
-- **Auto-refresh**: Automatic updates every 30 seconds
-- **Time Range Selection**: View metrics for the last hour, 6 hours, 24 hours, or 7 days
-
-## Prerequisites
-
-- Node.js 18 or higher
-- PostgreSQL database (same as the proxy server)
-- OpenProxy proxy server running
-
-## Installation
-
-1. Navigate to the dashboard directory:
-   ```bash
-   cd dashboard
-   ```
-
-2. Install dependencies:
-   ```bash
-   npm install
-   ```
-
-3. Create a `.env` file (copy from `.env.example`):
-   ```bash
-   cp .env.example .env
-   ```
-
-4. Configure your `.env` file:
-   ```env
-   DATABASE_URL=postgresql://user:password@localhost:5432/database
-   DATABASE_TABLE=llm_proxy
-   ```
-
-## Running the Dashboard
-
-### Development Mode
-
-```bash
-npm run dev
-```
-
-The dashboard will be available at `http://localhost:3008`
-
-### Production Mode
-
-1. Build the application:
-   ```bash
-   npm run build
-   ```
-
-2. Start the production server:
-   ```bash
-   npm start
-   ```
-
-## Dashboard Sections
-
-### 1. Overview Cards
-Displays key metrics at a glance:
-- Total requests processed
-- Total tokens consumed
-- Total cost incurred
-- Average response time
-- Number of unique models used
-- Number of unique client IPs
-
-### 2. Hourly Trends
-Two charts showing:
-- Requests count and average response time over time
-- Token usage and costs over time
-
-### 3. Model Breakdown
-Table showing per-model statistics:
-- Request count
-- Total tokens used
-- Total cost
-- Average response time
-
-### 4. Recent Requests
-Detailed table of recent API calls showing:
-- Timestamp
-- Model used
-- Token breakdown (prompt + completion = total)
-- Cost
-- Response time
-- HTTP status code
-- Client IP address
-- Whether the request was streamed
-
-## Configuration
-
-### Port
-The dashboard runs on port 3008 by default. To change this, modify the `dev` and `start` scripts in `package.json`:
-
-```json
-"dev": "next dev -p YOUR_PORT",
-"start": "next start -p YOUR_PORT"
-```
-
-### Database Connection
-Ensure the `DATABASE_URL` in your `.env` file matches the PostgreSQL connection string used by the proxy server.
-
-### Time Ranges
-Available time ranges:
-- Last Hour (1 hour)
-- Last 6 Hours
-- Last 24 Hours (default)
-- Last 7 Days (168 hours)
-
-## Troubleshooting
-
-### "Failed to fetch metrics" Error
-- Verify that the `DATABASE_URL` in `.env` is correct
-- Ensure PostgreSQL is running and accessible
-- Check that the `llm_proxy` table exists in your database
-- Verify network connectivity to the database
-
-### Empty Dashboard
-- Ensure the proxy server is running and processing requests
-- Verify that requests are being logged to the database
-- Check that the `DATABASE_TABLE` name matches your configuration
-
-### Port Conflicts
-If port 3008 is already in use, change the port in `package.json` scripts.
-
-## Technology Stack
-
-- **Framework**: Next.js 14 (React 18)
-- **Charts**: Recharts
-- **Database**: PostgreSQL (via `pg` driver)
-- **Language**: TypeScript
-- **Styling**: Inline CSS (no external dependencies)
-
-## Architecture
-
-```
-dashboard/
-├── app/
-│   ├── api/
-│   │   └── metrics/
-│   │       └── route.ts       # API endpoint for fetching metrics
-│   ├── layout.tsx             # Root layout
-│   └── page.tsx               # Main dashboard page
-├── components/
-│   ├── MetricsOverview.tsx    # Overview cards component
-│   ├── ModelBreakdown.tsx     # Model statistics table
-│   ├── RecentRequests.tsx     # Recent requests table
-│   └── TrendsChart.tsx        # Hourly trends charts
-├── package.json
-├── tsconfig.json
-├── next.config.js
-└── README.md
-```
-
-## API Endpoints
-
-### GET `/api/metrics`
-
-Query parameters:
-- `hours` (optional): Number of hours to look back (default: 24)
-- `limit` (optional): Maximum number of recent requests to return (default: 100)
-
-Response:
-```json
-{
-  "success": true,
-  "data": {
-    "summary": {
-      "totalRequests": 1234,
-      "totalTokens": 567890,
-      "totalCost": 12.34,
-      "avgResponseTime": 450.5,
-      "uniqueModels": 3,
-      "uniqueClients": 15
-    },
-    "recentRequests": [...],
-    "modelBreakdown": [...],
-    "hourlyTrends": [...]
-  },
-  "timeRange": "24 hours"
-}
-```
-
-## License
-
-Same as OpenProxy parent project.

dashboard/app/api/metrics/route.ts

@@ -5,11 +5,7 @@ const pool = new Pool({
   connectionString: process.env.DATABASE_URL,
 });
 
-const TABLE_NAME = process.env.DATABASE_TABLE || 'llm_proxy';
-
-// Validate table name against whitelist to prevent SQL injection
-const ALLOWED_TABLES = ['llm_proxy', 'llm_proxy_dev', 'llm_proxy_test'];
-const validatedTableName = ALLOWED_TABLES.includes(TABLE_NAME) ? TABLE_NAME : 'llm_proxy';
+const TABLE_NAME = 'llm_proxy';
 
 export async function GET(request: NextRequest) {
   const { searchParams } = new URL(request.url);
@@ -35,7 +31,7 @@ export async function GET(request: NextRequest) {
           AVG(response_time) as avg_response_time,
           COUNT(DISTINCT model) as unique_models,
           COUNT(DISTINCT client_ip) as unique_clients
-        FROM ${validatedTableName}
+        FROM ${TABLE_NAME}
         WHERE timestamp >= NOW() - INTERVAL '1 hour' * $1
       `;
       const summaryResult = await client.query(summaryQuery, [hours]);
@@ -55,7 +51,7 @@ export async function GET(request: NextRequest) {
           response_status,
           client_ip,
           stream
-        FROM ${validatedTableName}
+        FROM ${TABLE_NAME}
         WHERE timestamp >= NOW() - INTERVAL '1 hour' * $1
         ORDER BY timestamp DESC
         LIMIT $2
@@ -71,7 +67,7 @@ export async function GET(request: NextRequest) {
           SUM(total_tokens) as total_tokens,
           SUM(total_cost) as total_cost,
           AVG(response_time) as avg_response_time
-        FROM ${validatedTableName}
+        FROM ${TABLE_NAME}
         WHERE timestamp >= NOW() - INTERVAL '1 hour' * $1
         GROUP BY model
         ORDER BY request_count DESC
@@ -87,7 +83,7 @@ export async function GET(request: NextRequest) {
           SUM(total_tokens) as tokens,
           SUM(total_cost) as cost,
           AVG(response_time) as avg_response_time
-        FROM ${validatedTableName}
+        FROM ${TABLE_NAME}
         WHERE timestamp >= NOW() - INTERVAL '1 hour' * $1
         GROUP BY hour
         ORDER BY hour ASC

dashboard/next.config.js

@@ -1,3 +1,7 @@
+const path = require('path');
+
+require('dotenv').config({ path: path.resolve(__dirname, '../.env') });
+
 /** @type {import('next').NextConfig} */
 const nextConfig = {
   reactStrictMode: true,

dashboard/package.json

@@ -10,6 +10,7 @@
     "lint": "next lint"
   },
   "dependencies": {
+    "dotenv": "^17.2.3",
     "next": "^14.2.35",
     "react": "^18.3.0",
     "react-dom": "^18.3.0",