Revert "Represent DB avatar URLs as non-null (#128)"

This reverts commit bf8e09b6c1.

common/answer.ts

@@ -9,7 +9,7 @@ export type Answer = {
   userId: string
   username: string
   name: string
-  avatarUrl: string
+  avatarUrl?: string
 
   text: string
 }

common/comment.ts

@@ -13,5 +13,5 @@ export type Comment = {
   // Denormalized, for rendering comments
   userName: string
   userUsername: string
-  userAvatarUrl: string
+  userAvatarUrl?: string
 }

common/contract.ts

@@ -11,7 +11,7 @@ export type FullContract<
   creatorId: string
   creatorName: string
   creatorUsername: string
-  creatorAvatarUrl: string
+  creatorAvatarUrl?: string // Start requiring after 2022-03-01
 
   question: string
   description: string // More info about what the contract is about

common/user.ts

@@ -4,7 +4,7 @@ export type User = {
 
   name: string
   username: string
-  avatarUrl: string
+  avatarUrl?: string
 
   // For their user page
   bio?: string

web/components/SEO.tsx

@@ -6,7 +6,7 @@ export type OgCardProps = {
   metadata: string
   creatorName: string
   creatorUsername: string
-  creatorAvatarUrl: string
+  creatorAvatarUrl?: string
 }
 
 function buildCardUrl(props: OgCardProps) {
@@ -14,6 +14,11 @@ function buildCardUrl(props: OgCardProps) {
     props.probability === undefined
       ? ''
       : `&probability=${encodeURIComponent(props.probability ?? '')}`
+  const creatorAvatarUrlParam =
+    props.creatorAvatarUrl === undefined
+      ? ''
+      : `&creatorAvatarUrl=${encodeURIComponent(props.creatorAvatarUrl ?? '')}`
+
   // URL encode each of the props, then add them as query params
   return (
     `https://manifold-og-image.vercel.app/m.png` +
@@ -21,7 +26,7 @@ function buildCardUrl(props: OgCardProps) {
     probabilityParam +
     `&metadata=${encodeURIComponent(props.metadata)}` +
     `&creatorName=${encodeURIComponent(props.creatorName)}` +
-    `&creatorAvatarUrl=${encodeURIComponent(props.creatorAvatarUrl)}` +
+    creatorAvatarUrlParam +
     `&creatorUsername=${encodeURIComponent(props.creatorUsername)}`
   )
 }

web/pages/api/v0/_types.ts

@@ -12,7 +12,7 @@ export type LiteMarket = {
   creatorUsername: string
   creatorName: string
   createdTime: number
-  creatorAvatarUrl: string
+  creatorAvatarUrl?: string
 
   // Market attributes. All times are in milliseconds since epoch
   closeTime?: number