Paid course creation, got started on rendering paid course details

src/components/bitcoinConnect/CoursePaymentButton.js

@@ -0,0 +1,148 @@
+import React, { useEffect, useState } from 'react';
+import dynamic from 'next/dynamic';
+import { initializeBitcoinConnect } from './BitcoinConnect';
+import { LightningAddress } from '@getalby/lightning-tools';
+import { useToast } from '@/hooks/useToast';
+import { useSession } from 'next-auth/react';
+import axios from 'axios'; // Import axios for API calls
+
+const PayButton = dynamic(
+  () => import('@getalby/bitcoin-connect-react').then((mod) => mod.PayButton),
+  {
+    ssr: false,
+  }
+);
+
+const CoursePaymentButton = ({ lnAddress, amount, onSuccess, onError, courseId }) => {
+  const [invoice, setInvoice] = useState(null);
+  const [userId, setUserId] = useState(null);
+  const { showToast } = useToast();
+  const [pollingInterval, setPollingInterval] = useState(null);
+  const { data: session } = useSession();
+
+  useEffect(() => {
+    if (session?.user) {
+      setUserId(session.user.id);
+    }
+  }, [session]);
+
+  useEffect(() => {
+    initializeBitcoinConnect();
+  }, []);
+
+  useEffect(() => {
+    const fetchInvoice = async () => {
+      try {
+        const ln = new LightningAddress(lnAddress);
+        await ln.fetch();
+        const invoice = await ln.requestInvoice({ satoshi: amount });
+        setInvoice(invoice);
+      } catch (error) {
+        console.error('Error fetching invoice:', error);
+        showToast('error', 'Invoice Error', 'Failed to fetch the invoice.');
+        if (onError) onError(error);
+      }
+    };
+
+    fetchInvoice();
+  }, [lnAddress, amount, onError, showToast]);
+
+  const startPolling = (invoice) => {
+    const intervalId = setInterval(async () => {
+      try {
+        const paid = await invoice.verifyPayment();
+        console.log('Polling for payment - Paid:', paid);
+        if (paid) {
+          clearInterval(intervalId); // Stop polling
+          handlePaymentSuccess(invoice);
+        }
+      } catch (error) {
+        console.error('Polling error:', error);
+        clearInterval(intervalId); // Stop polling on error
+        handlePaymentError(error);
+      }
+    }, 5000); // Poll every 5 seconds
+
+    setPollingInterval(intervalId);
+  };
+
+  const stopPolling = () => {
+    if (pollingInterval) {
+      clearInterval(pollingInterval);
+      setPollingInterval(null);
+    }
+  };
+
+  const handlePaymentSuccess = async (response) => {
+    stopPolling();
+    await closeModal();
+
+    try {
+      const purchaseData = {
+        userId: userId,
+        courseId: courseId,
+        amountPaid: parseInt(amount, 10)
+      };
+
+      const result = await axios.post('/api/purchase/course', purchaseData);
+
+      if (result.status === 200) {
+        showToast('success', 'Payment Successful', `Paid ${amount} sats and updated user purchases`);
+        if (onSuccess) onSuccess(response);
+      } else {
+        throw new Error('Failed to update user purchases');
+      }
+    } catch (error) {
+      console.error('Error updating user purchases:', error);
+      showToast('error', 'Purchase Update Failed', 'Payment was successful, but failed to update user purchases.');
+      if (onError) onError(error);
+    }
+  };
+
+  const handlePaymentError = (error) => {
+    console.error('Payment failed:', error);
+    showToast('error', 'Payment Failed', error.message || 'An error occurred during payment.');
+    if (onError) onError(error);
+    stopPolling(); // Stop polling on error
+  };
+
+  const handleModalOpen = () => {
+    console.log('Modal opened');
+    if (invoice) {
+      startPolling(invoice); // Start polling when modal is opened
+    }
+  };
+
+  const handleModalClose = () => {
+    console.log('Modal closed');
+    stopPolling(); // Stop polling when modal is closed
+  };
+
+  const closeModal = async () => {
+    const { closeModal } = await import('@getalby/bitcoin-connect-react');
+    closeModal();
+  };
+
+  return (
+    <div className="flex items-center">
+      {invoice ? (
+        <PayButton
+          invoice={invoice.paymentRequest}
+          onClick={handleModalOpen}
+          onPaid={handlePaymentSuccess}
+          onModalClose={handleModalClose}
+          title={`Pay ${amount} sats`}
+        >
+          Pay Now
+        </PayButton>
+      ) : (
+        <button disabled className="p-2 bg-gray-500 text-white rounded">
+          Loading...
+        </button>
+      )}
+      <span className="ml-2 text-white text-lg">{amount} sats</span>
+    </div>
+  );
+};
+
+export default CoursePaymentButton;

src/components/content/courses/CourseDetails.js

@@ -4,7 +4,7 @@ import { useImageProxy } from '@/hooks/useImageProxy';
 import ZapDisplay from '@/components/zaps/ZapDisplay';
 import { getTotalFromZaps } from '@/utils/lightning';
 import { Tag } from 'primereact/tag';
-import { nip19 } from 'nostr-tools';
+import { nip19, nip04 } from 'nostr-tools';
 import { useSession } from 'next-auth/react';
 import Image from 'next/image';
 import dynamic from 'next/dynamic';
@@ -13,6 +13,7 @@ import { useNDKContext } from "@/context/NDKContext";
 import { useZapsSubscription } from '@/hooks/nostrQueries/zaps/useZapsSubscription';
 import { findKind0Fields } from '@/utils/nostr';
 import 'primeicons/primeicons.css';
+import ResourcePaymentButton from "@/components/bitcoinConnect/ResourcePaymentButton";
 
 const MDDisplay = dynamic(
     () => import("@uiw/react-markdown-preview"),
@@ -21,7 +22,7 @@ const MDDisplay = dynamic(
     }
 );
 
-export default function CourseDetails({ processedEvent }) {
+export default function CourseDetails({ processedEvent, paidCourse, decryptedContent, handlePaymentSuccess, handlePaymentError }) {
     const [author, setAuthor] = useState(null);
     const [nAddress, setNAddress] = useState(null);    
     const [zapAmount, setZapAmount] = useState(0);
@@ -32,6 +33,18 @@ export default function CourseDetails({ processedEvent }) {
     const router = useRouter();
     const {ndk, addSigner} = useNDKContext();
 
+    useEffect(() => {
+        console.log("processedEvent", processedEvent);
+    }, [processedEvent]);
+
+    useEffect(() => {
+        console.log("zaps", zaps);
+    }, [zaps]);
+
+    useEffect(() => {
+        console.log("paidCourse", paidCourse);
+    }, [paidCourse]);
+
     useEffect(() => {
         if (session) {
             setUser(session.user);
@@ -108,15 +121,30 @@ export default function CourseDetails({ processedEvent }) {
                         {processedEvent && (
                             <div className='flex flex-col items-center justify-between rounded-lg h-72 p-4 bg-gray-700 drop-shadow-md'>
                                 <Image
-                                    alt="resource thumbnail"
+                                    alt="course thumbnail"
                                     src={returnImageProxy(processedEvent.image)}
                                     width={344}
                                     height={194}
                                     className="w-[344px] h-[194px] object-cover object-top rounded-lg"
                                 />
-                                    <div className='w-full flex justify-end'>
-                                        <ZapDisplay zapAmount={zapAmount} event={processedEvent} zapsLoading={zapsLoading} />
-                                    </div>
+                                <div className='w-full flex justify-between items-center'>
+                                    {paidCourse && !decryptedContent && (
+                                        <ResourcePaymentButton
+                                            lnAddress={'bitcoinplebdev@stacker.news'}
+                                            amount={processedEvent.price}
+                                            onSuccess={handlePaymentSuccess}
+                                            onError={handlePaymentError}
+                                            resourceId={processedEvent.d}
+                                        />
+                                    )}
+                                    {paidCourse && decryptedContent && author && processedEvent?.pubkey !== session?.user?.pubkey && (
+                                        <p className='text-green-500'>Paid {processedEvent.price} sats</p>
+                                    )}
+                                    {paidCourse && author && processedEvent?.pubkey === session?.user?.pubkey && (
+                                        <p className='text-green-500'>Price {processedEvent.price} sats</p>
+                                    )}
+                                    <ZapDisplay zapAmount={zapAmount} event={processedEvent} zapsLoading={zapsLoading} />
+                                </div>
                             </div>
                         )}
                     </div>
@@ -139,4 +167,4 @@ export default function CourseDetails({ processedEvent }) {
             </div>
         </div>
     );
-}
+}

src/components/content/courses/DraftCourseDetails.js

@@ -85,7 +85,7 @@ export default function DraftCourseDetails({ processedEvent, draftId, lessons })
             }
 
             // Step 2: Create and publish course
-            const courseEvent = createCourseEvent(newCourseId, processedEvent.title, processedEvent.summary, processedEvent.image, processedLessons);
+            const courseEvent = createCourseEvent(newCourseId, processedEvent.title, processedEvent.summary, processedEvent.image, processedLessons, processedEvent.price);
             const published = await courseEvent.publish();
 
             console.log('published', published);
@@ -124,7 +124,7 @@ export default function DraftCourseDetails({ processedEvent, draftId, lessons })
         }
     };
 
-    const createCourseEvent = (courseId, title, summary, coverImage, lessons) => {
+    const createCourseEvent = (courseId, title, summary, coverImage, lessons, price) => {
         const event = new NDKEvent(ndk);
         event.kind = 30004;
         event.content = "";
@@ -135,6 +135,7 @@ export default function DraftCourseDetails({ processedEvent, draftId, lessons })
             ['image', coverImage],
             ['description', summary],
             ['l', "Education"],
+            ['price', price.toString()],
             ...lessons.map((lesson) => ['a', `${lesson.kind}:${lesson.pubkey}:${lesson.d}`]),
         ];
         return event;

src/components/forms/CourseForm.js

@@ -22,6 +22,7 @@ import 'primeicons/primeicons.css';
 
 // todo dont allow adding courses as resources
 // todo need to update how I handle unpubbed resources
+// todo add back topics
 const CourseForm = ({ draft = null, isPublished = false }) => {
     const [title, setTitle] = useState('');
     const [summary, setSummary] = useState('');
@@ -111,7 +112,7 @@ const CourseForm = ({ draft = null, isPublished = false }) => {
                 title,
                 summary,
                 image: coverImage,
-                price: checked ? price : 0,
+                price: price || 0,
                 topics,
             };
 

src/db/models/userModels.js

@@ -65,6 +65,20 @@ export const addResourcePurchaseToUser = async (userId, purchaseData) => {
     });
   };
 
+export const addCoursePurchaseToUser = async (userId, purchaseData) => {
+    return await prisma.user.update({
+      where: { id: userId },
+      data: {
+        purchased: {
+          create: {
+            courseId: purchaseData.courseId,
+            amountPaid: purchaseData.amountPaid,
+          },
+        },
+      },
+    });
+  };
+
 export const createUser = async (data) => {
     return await prisma.user.create({
         data,

src/pages/api/purchase/course.js

@@ -0,0 +1,21 @@
+import { addCoursePurchaseToUser } from "@/db/models/userModels";
+
+export default async function handler(req, res) {
+  if (req.method === 'POST') {
+    try {
+      const { userId, courseId, amountPaid } = req.body;
+
+      const updatedUser = await addCoursePurchaseToUser(userId, {
+        courseId,
+        amountPaid: parseInt(amountPaid, 10)
+      });
+
+      res.status(200).json(updatedUser);
+    } catch (error) {
+      res.status(500).json({ error: error.message });
+    }
+  } else {
+    res.setHeader('Allow', ['POST']);
+    res.status(405).end(`Method ${req.method} Not Allowed`);
+  }
+}

src/pages/course/[slug]/index.js

@@ -5,6 +5,9 @@ import CourseDetails from "@/components/content/courses/CourseDetails";
 import CourseLesson from "@/components/content/courses/CourseLesson";
 import dynamic from 'next/dynamic';
 import { useNDKContext } from "@/context/NDKContext";
+import { useToast } from '@/hooks/useToast';
+import { useSession } from 'next-auth/react';
+import { nip04 } from 'nostr-tools';
 
 const MDDisplay = dynamic(
     () => import("@uiw/react-markdown-preview"),
@@ -17,9 +20,15 @@ const Course = () => {
     const [course, setCourse] = useState(null);
     const [lessonIds, setLessonIds] = useState([]);
     const [lessons, setLessons] = useState([]);
+    const [paidCourse, setPaidCourse] = useState(false);
+    const [decryptedContent, setDecryptedContent] = useState(null);
 
     const router = useRouter();
     const {ndk, addSigner} = useNDKContext();
+    const { data: session, update } = useSession();
+    const { showToast } = useToast();
+    const privkey = process.env.NEXT_PUBLIC_APP_PRIV_KEY;
+    const pubkey = process.env.NEXT_PUBLIC_APP_PUBLIC_KEY;
 
     const fetchAuthor = useCallback(async (pubkey) => {
         const author = await ndk.getUser({ pubkey });
@@ -95,9 +104,53 @@ const Course = () => {
         }
     }, [lessonIds, ndk, fetchAuthor]);
 
+    useEffect(() => {
+        if (course?.price) {
+            setPaidCourse(true);
+        }
+    }, [course]);
+
+    useEffect(() => {
+        const decryptContent = async () => {
+            if (session?.user && paidCourse) {
+                if (session.user?.purchased?.length > 0) {
+                    const purchasedCourse = session.user.purchased.find(purchase => purchase.resourceId === course.d);
+                    if (purchasedCourse) {
+                        const decryptedContent = await nip04.decrypt(privkey, pubkey, course.content);
+                        setDecryptedContent(decryptedContent);
+                    }
+                } else if (session.user?.role && session.user.role.subscribed) {
+                    const decryptedContent = await nip04.decrypt(privkey, pubkey, course.content);
+                    setDecryptedContent(decryptedContent);
+                }
+            }
+        }
+        decryptContent();
+    }, [session, paidCourse, course]);
+
+    const handlePaymentSuccess = async (response, newCourse) => {
+        if (response && response?.preimage) {
+            console.log("newCourse", newCourse);
+            const updated = await update();
+            console.log("session after update", updated);
+        } else {
+            showToast('error', 'Error', 'Failed to purchase course. Please try again.');
+        }
+    }
+
+    const handlePaymentError = (error) => {
+        showToast('error', 'Payment Error', `Failed to purchase course. Please try again. Error: ${error}`);
+    }
+
     return (
         <>
-            <CourseDetails processedEvent={course} />
+            <CourseDetails 
+                processedEvent={course} 
+                paidCourse={paidCourse}
+                decryptedContent={decryptedContent}
+                handlePaymentSuccess={handlePaymentSuccess}
+                handlePaymentError={handlePaymentError}
+            />
             {lessons.length > 0 && lessons.map((lesson, index) => (
                 <CourseLesson key={index} lesson={lesson} course={course} />
             ))}

src/utils/nostr.js

@@ -134,6 +134,9 @@ export const parseCourseEvent = (event) => {
             case 'd':
                 eventData.d = tag[1];
                 break;
+            case 'price':
+                eventData.price = tag[1];
+                break;
             // How do we get topics / tags?
             case 'l':
                 // Grab index 1 and any subsequent elements in the array