feat(#29): Add example product tool requiring purchase to access

.env.example

@@ -2,4 +2,5 @@ PUBLIC_SUPABASE_URL=""
 PUBLIC_SUPABASE_ANON_KEY=""
 SUPABASE_SERVICE_ROLE_KEY=""
 STRIPE_SECRET_KEY=""
-STRIPE_ENDPOINT_SECRET=""
+STRIPE_ENDPOINT_SECRET=""
+VITE_PRODUCT_ID_EXAMPLEPRODUCT=""

docs/database-setup.md

@@ -6,6 +6,13 @@ Databases are stored in Supabase. The auth table for signing up and logging in u
 
 To add the tables for recording their active subscriptions and bought products, as well as products and prices, you can use the SQL scripts from the `supabase/migrations` folder in the Supabase SQL Editor.
 
+## Common commands for local development
+
+- `npx supabase start` - Start the local Supabase instance
+- `npx supabase stop` - Stop the local Supabase instance
+- `npx supabase db reset` - Reset the local database
+- `npx supabase gen types typescript --local > src/lib/types/supabase.d.ts` - Generate types for the local database
+
 ## Generating Types
 
 To get the types for the tables, you can follow these instructions taken from [here](https://supabase.com/docs/guides/api/rest/generating-types#generating-types-using-supabase-cli):

src/lib/components/NavLinks.svelte

@@ -20,4 +20,4 @@
 		<li><a href="/">Submenu 2</a></li>
 	</ul>
 </li>
-<li><a href="/">Item 3</a></li>
+<li><a href="/tools/exampleproduct">Example Product</a></li>

src/lib/types/supabase.d.ts

@@ -201,6 +201,7 @@ export type Database = {
           id: string
           metadata: Json | null
           price_id: string | null
+          product_id: string
           quantity: number | null
           status: Database["public"]["Enums"]["subscription_status"] | null
           trial_end: string | null
@@ -218,6 +219,7 @@ export type Database = {
           id: string
           metadata?: Json | null
           price_id?: string | null
+          product_id: string
           quantity?: number | null
           status?: Database["public"]["Enums"]["subscription_status"] | null
           trial_end?: string | null
@@ -235,6 +237,7 @@ export type Database = {
           id?: string
           metadata?: Json | null
           price_id?: string | null
+          product_id?: string
           quantity?: number | null
           status?: Database["public"]["Enums"]["subscription_status"] | null
           trial_end?: string | null
@@ -249,6 +252,13 @@ export type Database = {
             referencedRelation: "prices"
             referencedColumns: ["id"]
           },
+          {
+            foreignKeyName: "subscriptions_product_id_fkey"
+            columns: ["product_id"]
+            isOneToOne: false
+            referencedRelation: "products"
+            referencedColumns: ["id"]
+          },
           {
             foreignKeyName: "subscriptions_user_id_fkey"
             columns: ["user_id"]

src/lib/utils/supabase/admin.ts

@@ -211,6 +211,7 @@ const manageSubscriptionStatusChange = async (
 		user_id: uuid,
 		metadata: subscription.metadata,
 		status: subscription.status,
+		product_id: subscription.items.data[0].price.product as string,
 		price_id: subscription.items.data[0].price.id,
 		quantity: 1, //subscription.quantity,
 		cancel_at_period_end: subscription.cancel_at_period_end,
@@ -264,6 +265,39 @@ const recordProductPurchase = async (userId: string, productId: string, priceId:
 	console.log(`Product purchased recorded for user [${userId}] and product [${productId}]`);
 };
 
+const hasProductAccess = async (userId: string, productId: string) => {
+	// Check if user has purchased the product
+	const { data: purchases, error: purchaseError } = await supabaseAdmin
+		.from('purchases')
+		.select('*')
+		.eq('user_id', userId)
+		.eq('product_id', productId);
+
+	if (purchaseError) throw new Error(purchaseError.message);
+
+	if (purchases && purchases.length > 0) {
+		// User has purchased the product
+		return true;
+	}
+
+	// Check if user has an active subscription for the product
+	const { data: subscriptions, error: subError } = await supabaseAdmin
+		.from('subscriptions')
+		.select('*')
+		.eq('user_id', userId)
+		.eq('product_id', productId)
+		.in('status', ['active', 'trialing']);
+
+	if (subError) throw new Error(subError.message);
+
+	if (subscriptions && subscriptions.length > 0) {
+		// User has an active subscription
+		return true;
+	}
+
+	return false;
+};
+
 export {
 	upsertProductRecord,
 	upsertPriceRecord,
@@ -271,5 +305,6 @@ export {
 	deletePriceRecord,
 	createOrRetrieveCustomer,
 	manageSubscriptionStatusChange,
-	recordProductPurchase
+	recordProductPurchase,
+	hasProductAccess
 };

src/routes/checkout/+page.server.ts

@@ -0,0 +1,11 @@
+/** @type {import('./$types').PageLoad} */
+import { redirect } from '@sveltejs/kit';
+
+export const load = async ({ params, locals: { safeGetSession } }) => {
+	const { session } = await safeGetSession();
+	if (!session) {
+		throw redirect(303, '/login'); // Redirect unauthenticated users to login
+	}
+
+	return params;
+};

src/routes/login/+page.svelte

@@ -0,0 +1,9 @@
+<script lang="ts">
+	import MagicLink from '$lib/components/MagicLink.svelte';
+
+	export let data;
+	let { supabase, session, url } = data;
+	$: ({ supabase, session, url } = data);
+</script>
+
+<MagicLink {supabase} {url} />

src/routes/tools/exampleproduct/+page.server.ts

@@ -0,0 +1,19 @@
+/** @type {import('./$types').PageLoad} */
+import { redirect } from '@sveltejs/kit';
+import { hasProductAccess } from '$lib/utils/supabase/admin';
+import { VITE_PRODUCT_ID_EXAMPLEPRODUCT } from '$env/static/private'; // Import the example product ID from env
+
+export const load = async ({ params, locals: { safeGetSession } }) => {
+	const { session } = await safeGetSession();
+	if (!session) {
+		throw redirect(303, '/login'); // Redirect unauthenticated users to login
+	}
+
+	// Check if the user has access to the 'EXAMPLE PRODUCT' product
+	const accessGranted = await hasProductAccess(session.user.id, VITE_PRODUCT_ID_EXAMPLEPRODUCT);
+	if (!accessGranted) {
+		throw redirect(303, '/unauthorised');
+	}
+
+	return params;
+};

src/routes/tools/exampleproduct/+page.svelte

@@ -0,0 +1,2 @@
+<h1>Example Product</h1>
+<p>This is an example of a tool you could be selling.</p>

src/routes/unauthorised/+page.svelte

@@ -0,0 +1,2 @@
+<h1>Unauthorised Access</h1>
+<p>Sorry, you don't have permission to access this tool.</p>

supabase/migrations/20240704190621_initial_migration.sql

@@ -110,6 +110,8 @@ create table subscriptions (
   status subscription_status,
   -- Set of key-value pairs, used to store additional information about the object in a structured format.
   metadata jsonb,
+  -- ID of the product this subscription is for.
+  product_id text references products(id) not null,
   -- ID of the price that created this subscription.
   price_id text references prices,
   -- Quantity multiplied by the unit amount of the price creates the amount of the subscription. Can be used to charge multiple seats.