Chungus 2.0

server/private/routers/billing/createCheckoutSession.ts

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+/*
+ * This file is part of a proprietary work.
+ *
+ * Copyright (c) 2025 Fossorial, Inc.
+ * All rights reserved.
+ *
+ * This file is licensed under the Fossorial Commercial License.
+ * You may not use this file except in compliance with the License.
+ * Unauthorized use, copying, modification, or distribution is strictly prohibited.
+ *
+ * This file is not licensed under the AGPLv3.
+ */
+
+import { Request, Response, NextFunction } from "express";
+import { z } from "zod";
+import { customers, db } from "@server/db";
+import { eq } from "drizzle-orm";
+import response from "@server/lib/response";
+import HttpCode from "@server/types/HttpCode";
+import createHttpError from "http-errors";
+import logger from "@server/logger";
+import config from "@server/lib/config";
+import { fromError } from "zod-validation-error";
+import stripe from "#private/lib/stripe";
+import { getLineItems, getStandardFeaturePriceSet } from "@server/lib/billing";
+import { getTierPriceSet, TierId } from "@server/lib/billing/tiers";
+
+const createCheckoutSessionSchema = z
+    .object({
+        orgId: z.string()
+    })
+    .strict();
+
+export async function createCheckoutSession(
+    req: Request,
+    res: Response,
+    next: NextFunction
+): Promise<any> {
+    try {
+        const parsedParams = createCheckoutSessionSchema.safeParse(req.params);
+        if (!parsedParams.success) {
+            return next(
+                createHttpError(
+                    HttpCode.BAD_REQUEST,
+                    fromError(parsedParams.error).toString()
+                )
+            );
+        }
+
+        const { orgId } = parsedParams.data;
+
+        // check if we already have a customer for this org
+        const [customer] = await db
+            .select()
+            .from(customers)
+            .where(eq(customers.orgId, orgId))
+            .limit(1);
+
+        // If we don't have a customer, create one
+        if (!customer) {
+            // error
+            return next(
+                createHttpError(
+                    HttpCode.BAD_REQUEST,
+                    "No customer found for this organization"
+                )
+            );
+        }
+
+        const standardTierPrice = getTierPriceSet()[TierId.STANDARD];
+
+        const session = await stripe!.checkout.sessions.create({
+            client_reference_id: orgId, // So we can look it up the org later on the webhook
+            billing_address_collection: "required",
+            line_items: [
+                {
+                    price: standardTierPrice, // Use the standard tier 
+                    quantity: 1
+                },
+                ...getLineItems(getStandardFeaturePriceSet())
+            ], // Start with the standard feature set that matches the free limits
+            customer: customer.customerId,
+            mode: "subscription",
+            success_url: `${config.getRawConfig().app.dashboard_url}/${orgId}/settings/billing?success=true&session_id={CHECKOUT_SESSION_ID}`,
+            cancel_url: `${config.getRawConfig().app.dashboard_url}/${orgId}/settings/billing?canceled=true`
+        });
+
+        return response<string>(res, {
+            data: session.url,
+            success: true,
+            error: false,
+            message: "Organization created successfully",
+            status: HttpCode.CREATED
+        });
+    } catch (error) {
+        logger.error(error);
+        return next(
+            createHttpError(HttpCode.INTERNAL_SERVER_ERROR, "An error occurred")
+        );
+    }
+}