fix: Add Vercel serverless function for error reporting

api/index.ts

@@ -0,0 +1,104 @@
+import type { VercelRequest, VercelResponse } from '@vercel/node'
+import express from 'express'
+
+// In-memory rate limiting for error reporting
+const rateLimitMap = new Map<string, { count: number; resetTime: number }>()
+const RATE_LIMIT_WINDOW_MS = 60 * 1000 // 1 minute
+const RATE_LIMIT_MAX_REQUESTS = 10
+
+function isRateLimited(ip: string): boolean {
+    const now = Date.now()
+    const record = rateLimitMap.get(ip)
+
+    if (!record || now > record.resetTime) {
+        rateLimitMap.set(ip, { count: 1, resetTime: now + RATE_LIMIT_WINDOW_MS })
+        return false
+    }
+
+    if (record.count >= RATE_LIMIT_MAX_REQUESTS) {
+        return true
+    }
+
+    record.count++
+    return false
+}
+
+// Vercel serverless handler
+export default async function handler(req: VercelRequest, res: VercelResponse) {
+    // CORS headers
+    res.setHeader('Access-Control-Allow-Origin', '*')
+    res.setHeader('Access-Control-Allow-Methods', 'POST, OPTIONS')
+    res.setHeader('Access-Control-Allow-Headers', 'Content-Type')
+
+    // Handle preflight
+    if (req.method === 'OPTIONS') {
+        return res.status(200).end()
+    }
+
+    // Only POST allowed
+    if (req.method !== 'POST') {
+        return res.status(405).json({ error: 'Method not allowed' })
+    }
+
+    try {
+        // Rate limiting
+        const ip = (req.headers['x-forwarded-for'] as string)?.split(',')[0]?.trim() || 'unknown'
+        if (isRateLimited(ip)) {
+            return res.status(429).json({ error: 'Rate limit exceeded' })
+        }
+
+        // Check Discord webhook URL
+        const webhookUrl = process.env.DISCORD_ERROR_WEBHOOK_URL
+        if (!webhookUrl) {
+            console.error('[ErrorReporting] DISCORD_ERROR_WEBHOOK_URL not configured')
+            return res.status(503).json({ error: 'Error reporting service unavailable' })
+        }
+
+        // Validate payload
+        const payload = req.body
+        if (!payload?.error) {
+            return res.status(400).json({ error: 'Invalid payload: missing error field' })
+        }
+
+        // Build Discord embed
+        const embed = {
+            title: '🔴 Bot Error Report',
+            description: `\`\`\`\n${String(payload.error).slice(0, 1900)}\n\`\`\``,
+            color: 0xdc143c,
+            fields: [
+                { name: 'Version', value: String(payload.context?.version || 'unknown'), inline: true },
+                { name: 'Platform', value: String(payload.context?.platform || 'unknown'), inline: true },
+                { name: 'Node', value: String(payload.context?.nodeVersion || 'unknown'), inline: true }
+            ],
+            timestamp: new Date().toISOString(),
+            footer: { text: 'Community Error Reporting' }
+        }
+
+        if (payload.stack) {
+            const stackLines = String(payload.stack).split('\n').slice(0, 15).join('\n')
+            embed.fields.push({ 
+                name: 'Stack Trace', 
+                value: `\`\`\`\n${stackLines.slice(0, 1000)}\n\`\`\``, 
+                inline: false 
+            })
+        }
+
+        // Send to Discord
+        const axios = (await import('axios')).default
+        await axios.post(webhookUrl, {
+            username: 'Microsoft Rewards Bot',
+            avatar_url: 'https://raw.githubusercontent.com/LightZirconite/Microsoft-Rewards-Bot/refs/heads/main/assets/logo.png',
+            embeds: [embed]
+        }, { timeout: 10000 })
+
+        console.log('[ErrorReporting] Report sent successfully')
+        return res.json({ success: true, message: 'Error report received' })
+
+    } catch (error) {
+        console.error('[ErrorReporting] Failed:', error)
+        return res.status(500).json({ 
+            error: 'Failed to send error report',
+            message: error instanceof Error ? error.message : 'Unknown error'
+        })
+    }
+}

vercel.json

@@ -0,0 +1,8 @@
+{
+    "rewrites": [
+        {
+            "source": "/api/report-error",
+            "destination": "/api"
+        }
+    ]
+}