Implement scheduled email reminders

- Add cron service to Docker container for automated email sending
- Create /api/send-scheduled-emails endpoint for cron job calls
- Modify prayer submission to store user reminder preferences instead of sending immediate emails
- Update Firestore rules to allow server-side API access for scheduled emails
- Add userId to prayers for proper user association
- Cron runs every 5 minutes to check and send scheduled reminders

Dockerfile

@@ -33,6 +33,12 @@ ENV NEXT_TELEMETRY_DISABLED=1
 RUN addgroup --system --gid 1001 nodejs
 RUN adduser --system --uid 1001 nextjs
 
+# Install cron and curl for scheduled tasks
+RUN apk add --no-cache dcron curl
+
+# Create cron log directory
+RUN mkdir -p /var/log/cron && chown nextjs:nodejs /var/log/cron
+
 COPY --from=builder /app/public ./public
 
 # Set the correct permission for prerender cache
@@ -52,6 +58,18 @@ ENV PORT=3000
 # set hostname to localhost
 ENV HOSTNAME="0.0.0.0"
 
+# Create cron jobs for scheduled emails
+RUN echo "*/5 * * * * curl -s http://localhost:3000/api/send-scheduled-emails >> /var/log/cron/scheduled-emails.log 2>&1" > /etc/crontabs/nextjs
+
+# Make sure cron files have correct permissions
+RUN chown nextjs:nodejs /etc/crontabs/nextjs
+
+# Create startup script
+RUN echo '#!/bin/sh' > /app/start.sh && \
+    echo 'crond -f -l 8 &' >> /app/start.sh && \
+    echo 'exec "$@"' >> /app/start.sh && \
+    chmod +x /app/start.sh
+
 # server.js is created by next build from the standalone output
 # https://nextjs.org/docs/pages/api-reference/next-config-js/output
-CMD ["node", "server.js"]
+CMD ["/app/start.sh", "node", "server.js"]

firestore.rules

@@ -11,6 +11,16 @@ service cloud.firestore {
       allow read, write: if request.auth != null;
     }
 
+    // Allow server-side API access for scheduled emails (no auth required for GET)
+    match /prayers {
+      allow read: if true;
+    }
+
+    // Allow server-side API access for scheduled emails
+    match /users {
+      allow read: if true;
+    }
+
     // Allow authenticated users to read/write config (for admin settings)
     match /config/{configId} {
       allow read, write: if request.auth != null;

public/sw.js

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src/app/api/send-scheduled-emails/route.ts

@@ -0,0 +1,353 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { doc, getDoc, collection, getDocs, updateDoc } from 'firebase/firestore';
+import { db } from '@/lib/firebase';
+
+const nodemailer = require('nodemailer');
+
+function generatePrayerEmailHTML(message: string, subject: string) {
+  // Parse the message to extract prayer details
+  const lines = message.split('\n');
+  let currentPrayer = null;
+  let prayers = [];
+  let summarySection = false;
+
+  for (const line of lines) {
+    if (line.includes('New prayer added') || line.includes('New praise added')) {
+      currentPrayer = { type: '', date: '', text: '', journal: '', prayFor: '' };
+    } else if (line.startsWith('Date: ')) {
+      if (currentPrayer) currentPrayer.date = line.replace('Date: ', '');
+    } else if (line.startsWith('Praying for: ')) {
+      if (currentPrayer) currentPrayer.prayFor = line.replace('Praying for: ', '');
+    } else if (line.startsWith('Journal: ')) {
+      if (currentPrayer) currentPrayer.journal = line.replace('Journal: ', '');
+    } else if (line.includes('--- Active Prayers Summary ---')) {
+      summarySection = true;
+      prayers.push({ type: 'summary-header', text: 'Active Prayers Summary' });
+    } else if (summarySection && line.includes(' - ')) {
+      // Parse summary lines like "2025-01-15 - PRAYER: prayer text"
+      const match = line.match(/(\d{4}-\d{2}-\d{2}) - (PRAYER|PRAISE): (.+)/);
+      if (match) {
+        prayers.push({
+          type: 'summary-item',
+          date: match[1],
+          prayerType: match[2].toLowerCase(),
+          text: match[3]
+        });
+      }
+    } else if (currentPrayer && !currentPrayer.text && line.trim()) {
+      currentPrayer.text = line;
+      prayers.push(currentPrayer);
+      currentPrayer = null;
+    }
+  }
+
+  const html = `
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>${subject}</title>
+    <style>
+        body {
+            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
+            line-height: 1.6;
+            color: #333;
+            max-width: 600px;
+            margin: 0 auto;
+            background-color: #f8f9fa;
+            padding: 20px;
+        }
+        .container {
+            background-color: white;
+            border-radius: 12px;
+            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
+            overflow: hidden;
+        }
+        .header {
+            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+            color: white;
+            padding: 30px 20px;
+            text-align: center;
+        }
+        .header h1 {
+            margin: 0;
+            font-size: 24px;
+            font-weight: 600;
+        }
+        .header .subtitle {
+            margin: 8px 0 0 0;
+            opacity: 0.9;
+            font-size: 16px;
+        }
+        .content {
+            padding: 30px 20px;
+        }
+        .prayer-card {
+            background: #f8f9fa;
+            border-left: 4px solid #667eea;
+            padding: 20px;
+            margin: 20px 0;
+            border-radius: 8px;
+        }
+        .prayer-type {
+            font-weight: 600;
+            color: #667eea;
+            text-transform: uppercase;
+            font-size: 14px;
+            letter-spacing: 0.5px;
+        }
+        .prayer-date {
+            color: #666;
+            font-size: 14px;
+            margin-bottom: 10px;
+        }
+        .prayer-text {
+            font-size: 16px;
+            line-height: 1.6;
+            margin: 10px 0;
+        }
+        .prayer-journal {
+            background: #fff;
+            border-left: 3px solid #764ba2;
+            padding: 15px;
+            margin: 15px 0;
+            font-style: italic;
+            color: #555;
+        }
+        .pray-for {
+            background: #e8f4fd;
+            padding: 10px 15px;
+            border-radius: 6px;
+            margin: 10px 0;
+            font-weight: 500;
+            color: #2c5282;
+        }
+        .summary-section {
+            background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
+            color: white;
+            padding: 20px;
+            margin: 20px 0;
+            border-radius: 8px;
+        }
+        .summary-section h3 {
+            margin: 0 0 15px 0;
+            font-size: 18px;
+        }
+        .summary-item {
+            background: rgba(255, 255, 255, 0.1);
+            padding: 15px;
+            margin: 10px 0;
+            border-radius: 6px;
+        }
+        .summary-item .date {
+            color: #ffed4e;
+            font-size: 12px;
+            font-weight: 600;
+            text-transform: uppercase;
+        }
+        .summary-item .prayer-type {
+            color: #ffed4e;
+            font-size: 12px;
+            margin-left: 10px;
+        }
+        .footer {
+            background: #f8f9fa;
+            padding: 20px;
+            text-align: center;
+            color: #666;
+            font-size: 14px;
+        }
+        .verse {
+            background: #667eea;
+            color: white;
+            padding: 20px;
+            border-radius: 8px;
+            margin: 20px 0;
+            text-align: center;
+        }
+        .verse blockquote {
+            font-style: italic;
+            font-size: 16px;
+            margin: 0 0 10px 0;
+        }
+        .verse cite {
+            font-size: 14px;
+            opacity: 0.9;
+        }
+    </style>
+</head>
+<body>
+    <div class="container">
+        <div class="header">
+            <h1>🙏 Prayer App</h1>
+            <div class="subtitle">${subject}</div>
+        </div>
+
+        <div class="content">
+            ${prayers.map(prayer => {
+                if (prayer.type === 'summary-header') {
+                    return `
+                        <div class="summary-section">
+                            <h3>📚 ${prayer.text}</h3>
+                            <p>Here are all your active prayers and praises:</p>
+                        </div>
+                    `;
+                } else if (prayer.type === 'summary-item') {
+                    return `
+                        <div class="summary-item">
+                            <div class="date">${prayer.date ? new Date(prayer.date).toLocaleDateString() : 'Unknown Date'}</div>
+                            <div class="prayer-type">${prayer.prayerType}</div>
+                            <div class="prayer-text">${prayer.text}</div>
+                        </div>
+                    `;
+                } else {
+                    return `
+                        <div class="prayer-card">
+                            <div class="prayer-type">${prayer.type}</div>
+                            <div class="prayer-date">${prayer.date ? new Date(prayer.date).toLocaleDateString() : 'Unknown Date'}</div>
+                            <div class="prayer-text">${prayer.text}</div>
+                            ${prayer.prayFor ? `<div class="pray-for">🙋 Praying for: ${prayer.prayFor}</div>` : ''}
+                            ${prayer.journal && prayer.journal !== 'None' ? `<div class="prayer-journal">📝 Journal: ${prayer.journal}</div>` : ''}
+                        </div>
+                    `;
+                }
+            }).join('')}
+
+            <div class="verse">
+                <blockquote>"Pray without ceasing"</blockquote>
+                <cite>— 1 Thessalonians 5:17</cite>
+            </div>
+        </div>
+
+        <div class="footer">
+            <p>Sent with ❤️ from your Prayer App</p>
+            <p>This email helps you stay connected to your spiritual journey.</p>
+        </div>
+    </div>
+</body>
+</html>`;
+  return html;
+}
+
+export async function GET() {
+  try {
+    console.log('🔄 Checking for scheduled emails...');
+
+    // Get SMTP config
+    const configDoc = await getDoc(doc(db, 'config', 'smtp'));
+    if (!configDoc.exists()) {
+      console.log('❌ SMTP configuration not found');
+      return NextResponse.json({ message: 'SMTP configuration not found' }, { status: 500 });
+    }
+
+    const smtpConfig = configDoc.data();
+
+    // Create transporter
+    const transporter = nodemailer.createTransporter({
+      host: smtpConfig.host,
+      port: smtpConfig.port,
+      secure: smtpConfig.secure,
+      auth: {
+        user: smtpConfig.user,
+        pass: smtpConfig.pass,
+      },
+    });
+
+    // Get all users who have reminder preferences
+    const usersRef = collection(db, 'users');
+    const usersSnapshot = await getDocs(usersRef);
+
+    let emailsSent = 0;
+
+    for (const userDoc of usersSnapshot.docs) {
+      const userData = userDoc.data();
+      const userId = userDoc.id;
+
+      // Check if user has reminder preferences
+      if (!userData.reminderFrequency || userData.reminderFrequency === 'never') {
+        continue;
+      }
+
+      // Check last email sent time
+      const lastEmailSent = userData.lastEmailSent ? new Date(userData.lastEmailSent.toDate()) : new Date(0);
+      const now = new Date();
+
+      let shouldSendEmail = false;
+      const frequency = userData.reminderFrequency;
+
+      if (frequency === 'daily') {
+        // Send if more than 24 hours have passed
+        shouldSendEmail = (now.getTime() - lastEmailSent.getTime()) > (24 * 60 * 60 * 1000);
+      } else if (frequency === 'weekly') {
+        // Send if more than 7 days have passed
+        shouldSendEmail = (now.getTime() - lastEmailSent.getTime()) > (7 * 24 * 60 * 60 * 1000);
+      } else if (frequency === 'monthly') {
+        // Send if more than 30 days have passed
+        shouldSendEmail = (now.getTime() - lastEmailSent.getTime()) > (30 * 24 * 60 * 60 * 1000);
+      }
+
+      if (!shouldSendEmail) {
+        continue;
+      }
+
+      // Get user's active prayers
+      const prayersRef = collection(db, 'prayers');
+      const prayersQuery = await getDocs(prayersRef);
+      const userPrayers = prayersQuery.docs
+        .filter(doc => doc.data().userId === userId && !doc.data().archived)
+        .map(doc => doc.data());
+
+      if (userPrayers.length === 0) {
+        continue; // No active prayers to send
+      }
+
+      // Build email content
+      let message = `--- Active Prayers Summary ---\n`;
+      userPrayers.forEach(prayer => {
+        message += `\n${prayer.date} - ${prayer.type.toUpperCase()}: ${prayer.text}`;
+        if (prayer.prayFor) {
+          message += ` (Praying for: ${prayer.prayFor})`;
+        }
+        if (prayer.journal) {
+          message += `\n  Journal: ${prayer.journal}`;
+        }
+        message += `\n`;
+      });
+
+      const subject = `Your ${frequency} prayer reminder - ${userPrayers.length} active prayers`;
+
+      try {
+        // Send email
+        await transporter.sendMail({
+          from: smtpConfig.from,
+          to: userData.email,
+          subject,
+          text: message,
+          html: generatePrayerEmailHTML(message, subject),
+        });
+
+        // Update last email sent time
+        await updateDoc(doc(db, 'users', userId), {
+          lastEmailSent: new Date(),
+        });
+
+        emailsSent++;
+        console.log(`✅ Sent ${frequency} reminder email to ${userData.email}`);
+
+      } catch (emailError) {
+        console.error(`❌ Failed to send email to ${userData.email}:`, emailError);
+      }
+    }
+
+    console.log(`📧 Scheduled email check complete. Sent ${emailsSent} emails.`);
+    return NextResponse.json({
+      message: `Scheduled email check complete. Sent ${emailsSent} emails.`,
+      emailsSent
+    });
+
+  } catch (error) {
+    console.error('❌ Scheduled email error:', error);
+    return NextResponse.json({ error: 'Failed to process scheduled emails' }, { status: 500 });
+  }
+}

src/app/page.tsx

@@ -4,9 +4,12 @@ import { useState, useEffect } from 'react';
 import { useAuth } from '@/context/AuthContext';
 import Login from '@/components/Login';
 import Admin from '@/components/Admin';
+import { db } from '@/lib/firebase';
+import { doc, setDoc } from 'firebase/firestore';
 
 interface Prayer {
   id: string;
+  userId?: string;
   date: string;
   type: 'prayer' | 'praise';
   text: string;
@@ -69,49 +72,28 @@ export default function Home() {
     e.preventDefault();
     const newPrayer: Prayer = {
       id: Date.now().toString(),
+      userId: user?.uid || 'anonymous',
       ...form,
     };
     setPrayers(prev => [...prev, newPrayer]);
     
-    if (form.email && form.reminderFrequency !== 'never') {
+    // Store user reminder preferences in Firestore
+    if (user && form.reminderFrequency !== 'never') {
       try {
-        let message = `Date: ${form.date}\n\n${form.text}\n\nJournal: ${form.journal || 'None'}`;
+        await setDoc(doc(db, 'users', user.uid), {
+          email: form.email,
+          reminderFrequency: form.reminderFrequency,
+          includeActiveSummary: form.includeActiveSummary,
+          lastEmailSent: null, // Will be set when first email is sent
+        }, { merge: true });
         
-        if (form.prayFor) {
+        console.log('✅ Reminder preferences saved');
-          message += `\n\nPraying for: ${form.prayFor}`;
-        }
-        
-        if (form.includeActiveSummary) {
-          const activePrayers = prayers.filter(prayer => !prayer.archived);
-          if (activePrayers.length > 0) {
-            message += `\n\n--- Active Prayers Summary ---\n`;
-            activePrayers.forEach(prayer => {
-              message += `\n${prayer.date} - ${prayer.type.toUpperCase()}: ${prayer.text}`;
-              if (prayer.prayFor) {
-                message += ` (Praying for: ${prayer.prayFor})`;
-              }
-              if (prayer.journal) {
-                message += `\n  Journal: ${prayer.journal}`;
-              }
-              message += `\n`;
-            });
-          }
-        }
-        
-        await fetch('/api/send-email', {
-          method: 'POST',
-          headers: { 'Content-Type': 'application/json' },
-          body: JSON.stringify({
-            email: form.email,
-            subject: `New ${form.type} added - ${form.reminderFrequency} reminders enabled`,
-            message: message,
-          }),
-        });
       } catch (error) {
-        console.error('Failed to send email:', error);
+        console.error('❌ Failed to save reminder preferences:', error);
       }
     }
     
+    // Reset form
     setForm({
       date: new Date().toISOString().split('T')[0],
       type: 'prayer',