feat(MED-100): create medusa store account for user

packages/features/medusa-storefront/src/lib/data/cookies.ts

@@ -18,6 +18,23 @@ export const getAuthHeaders = async (): Promise<
   }
 }
 
+export const getMedusaCustomerId = async (): Promise<
+  { customerId: string | null }
+> => {
+  try {
+    const cookies = await nextCookies()
+    const customerId = cookies.get("_medusa_customer_id")?.value
+
+    if (!customerId) {
+      return { customerId: null }
+    }
+
+    return { customerId }
+  } catch {
+    return { customerId: null}
+  }
+}
+
 export const getCacheTag = async (tag: string): Promise<string> => {
   try {
     const cookies = await nextCookies()
@@ -59,6 +76,16 @@ export const setAuthToken = async (token: string) => {
   })
 }
 
+export const setMedusaCustomerId = async (customerId: string) => {
+  const cookies = await nextCookies()
+  cookies.set("_medusa_customer_id", customerId, {
+    maxAge: 60 * 60 * 24 * 7,
+    httpOnly: true,
+    sameSite: "strict",
+    secure: process.env.NODE_ENV === "production",
+  })
+}
+
 export const removeAuthToken = async () => {
   const cookies = await nextCookies()
   cookies.set("_medusa_jwt", "", {

packages/features/medusa-storefront/src/lib/data/customer.ts

@@ -259,3 +259,51 @@ export const updateCustomerAddress = async (
       return { success: false, error: err.toString() }
     })
 }
+
+export async function medusaLoginOrRegister(credentials: {
+  email: string
+  password?: string
+}) {
+  const { email, password } = credentials;
+
+  try {
+    const token = await sdk.auth.login("customer", "emailpass", {
+      email,
+      password,
+    });
+    await setAuthToken(token as string);
+    await transferCart();
+
+    const customerCacheTag = await getCacheTag("customers");
+    revalidateTag(customerCacheTag);
+  } catch (error) {
+    console.error("Failed to login customer, attempting to register", error);
+    try {
+      const registerToken = await sdk.auth.register("customer", "emailpass", {
+        email: email,
+        password: password,
+      })
+
+      await setAuthToken(registerToken as string);
+
+      const headers = {
+        ...(await getAuthHeaders()),
+      };
+
+      await sdk.store.customer.create({ email }, {}, headers);
+
+      const loginToken = await sdk.auth.login("customer", "emailpass", {
+        email,
+        password,
+      });
+
+      await setAuthToken(loginToken as string);
+
+      const customerCacheTag = await getCacheTag("customers");
+      revalidateTag(customerCacheTag);
+      await transferCart();
+    } catch (registerError) {
+      throw medusaError(registerError);
+    }
+  }
+}