ensure free license for oauth users

src/auth/repository.ts

@@ -220,7 +220,7 @@ export async function findOrCreateOAuthUser(input: {
     }
   })
 
-  if (oauthAccount?.user) return toAuthUser(oauthAccount.user)
+  if (oauthAccount?.user) return toAuthUserEnsuringFreeLicense(oauthAccount.user)
 
   const existingUser = await prisma.user.findUnique({
     where: { email },
@@ -242,7 +242,7 @@ export async function findOrCreateOAuthUser(input: {
       select: userSelect()
     })
 
-    return toAuthUser(user)
+    return toAuthUserEnsuringFreeLicense(user)
   }
 
   const freeLicense = await prisma.license.findUnique({
@@ -280,6 +280,43 @@ export async function findOrCreateOAuthUser(input: {
   return toAuthUser(user)
 }
 
+async function toAuthUserEnsuringFreeLicense(user: UserWithAffiliation): Promise<AuthUser> {
+  if (user.userLicenses?.[0]) return toAuthUser(user)
+
+  await ensureFreeLicense(user.id)
+  return (await findUserById(user.id)) ?? toAuthUser(user)
+}
+
+async function ensureFreeLicense(userId: string): Promise<void> {
+  const activeLicense = await prisma.userLicense.findFirst({
+    where: {
+      userId,
+      ...activeLicenseWhere()
+    },
+    select: { id: true }
+  })
+
+  if (activeLicense) return
+
+  const freeLicense = await prisma.license.findUnique({
+    where: { code: 'FREE' },
+    select: { id: true, defaultDurationDays: true }
+  })
+  if (!freeLicense) throw new Error('FREE license is not configured')
+
+  const licenseStartsAt = new Date()
+  const licenseExpiresAt = calculateLicenseExpiresAt(licenseStartsAt, freeLicense.defaultDurationDays)
+
+  await prisma.userLicense.create({
+    data: {
+      userId,
+      licenseId: freeLicense.id,
+      startsAt: licenseStartsAt,
+      expiresAt: licenseExpiresAt
+    }
+  })
+}
+
 function calculateLicenseExpiresAt(startsAt: Date, durationDays: number | null | undefined): Date | null {
   if (!durationDays) return null