multiple comments with the same parent are exp in cost

api/resolvers/item.js

@@ -762,7 +762,7 @@ export default {
     meComments: async (item, args, { me, models }) => {
       if (!me) return 0
 
-      return await models.items.count({ where: { userId: me.id, parentId: item.id } })
+      return await models.item.count({ where: { userId: me.id, parentId: item.id } })
     },
     mine: async (item, args, { me, models }) => {
       return me?.id === item.userId
@@ -847,20 +847,6 @@ const createItem = async (parent, { title, url, text, boost, parentId }, { me, m
     throw new UserInputError(`boost must be at least ${BOOST_MIN}`, { argumentName: 'boost' })
   }
 
-  // check if they've already commented on this parent ... don't allow it if so
-  if (parentId) {
-    const existingComment = await models.item.findFirst({
-      where: {
-        parentId: Number(parentId),
-        userId: me.id
-      }
-    })
-
-    if (existingComment) {
-      throw new UserInputError("you've already commented on this item")
-    }
-  }
-
   const [item] = await serialize(models,
     models.$queryRaw(`${SELECT} FROM create_item($1, $2, $3, $4, $5, $6) AS "Item"`,
       title, url, text, Number(boost || 0), Number(parentId), Number(me.id)))

components/comment.js

@@ -174,7 +174,7 @@ export default function Comment ({
       <div className={`${styles.children}`}>
         {!noReply &&
           <Reply
-            parentId={item.id} replyOpen={replyOpen}
+            parentId={item.id} meComments={item.meComments} replyOpen={replyOpen}
           />}
         {children}
         <div className={`${styles.comments} ml-sm-1 ml-md-3`}>

components/item-full.js

@@ -29,7 +29,7 @@ function BioItem ({ item, handleClick }) {
           >edit bio
           </Button>
         </div>}
-      <Reply parentId={item.id} />
+      <Reply parentId={item.id} meComments={item.meComments} />
     </>
   )
 }
@@ -86,7 +86,7 @@ function TopLevelItem ({ item, noReply, ...props }) {
     <ItemComponent item={item} {...props}>
       {item.text && <ItemText item={item} />}
       {item.url && <ItemEmbed item={item} />}
-      {!noReply && <Reply parentId={item.id} replyOpen />}
+      {!noReply && <Reply parentId={item.id} meComments={item.meComments} replyOpen />}
     </ItemComponent>
   )
 }

components/reply.js

@@ -12,7 +12,7 @@ export const CommentSchema = Yup.object({
   text: Yup.string().required('required').trim()
 })
 
-export default function Reply ({ parentId, onSuccess, replyOpen }) {
+export default function Reply ({ parentId, meComments, onSuccess, replyOpen }) {
   const [reply, setReply] = useState(replyOpen)
   const me = useMe()
 
@@ -45,6 +45,9 @@ export default function Reply ({ parentId, onSuccess, replyOpen }) {
             },
             ncomments (existingNComments = 0) {
               return existingNComments + 1
+            },
+            meComments (existingMeComments = 0) {
+              return existingMeComments + 1
             }
           }
         })
@@ -52,6 +55,8 @@ export default function Reply ({ parentId, onSuccess, replyOpen }) {
     }
   )
 
+  const cost = me?.freeComments ? 0 : Math.pow(10, meComments)
+
   return (
     <div>
       {replyOpen
@@ -87,8 +92,8 @@ export default function Reply ({ parentId, onSuccess, replyOpen }) {
             required
             hint={me?.freeComments ? <span className='text-success'>{me.freeComments} free comments left</span> : null}
           />
-          <ActionTooltip>
+          <ActionTooltip overlayText={`${cost} sats`}>
-            <SubmitButton variant='secondary' className='mt-1'>reply</SubmitButton>
+            <SubmitButton variant='secondary' className='mt-1'>reply{cost > 1 && <small> {cost} sats</small>}</SubmitButton>
           </ActionTooltip>
         </Form>
       </div>

fragments/comments.js

@@ -14,6 +14,7 @@ export const COMMENT_FIELDS = gql`
     upvotes
     boost
     meSats
+    meComments
     mine
     ncomments
     root {

fragments/items.js

@@ -83,6 +83,7 @@ export const ITEM_FULL = gql`
     item(id: $id) {
       ...ItemFields
       prior
+      meComments
       position
       text
       comments {
@@ -97,6 +98,7 @@ export const ITEM_WITH_COMMENTS = gql`
   fragment ItemWithComments on Item {
       ...ItemFields
       text
+      meComments
       comments {
         ...CommentsRecursive
       }

prisma/migrations/20220415193617_exp_comments/migration.sql

@@ -0,0 +1,48 @@
+CREATE OR REPLACE FUNCTION create_item(title TEXT, url TEXT, text TEXT, boost INTEGER, parent_id INTEGER, user_id INTEGER)
+RETURNS "Item"
+LANGUAGE plpgsql
+AS $$
+DECLARE
+    user_msats INTEGER;
+    cost INTEGER;
+    free_posts INTEGER;
+    free_comments INTEGER;
+    freebie BOOLEAN;
+    item "Item";
+BEGIN
+    PERFORM ASSERT_SERIALIZED();
+
+    SELECT msats, "freePosts", "freeComments"
+    INTO user_msats, free_posts, free_comments
+    FROM users WHERE id = user_id;
+
+    freebie := (parent_id IS NULL AND free_posts > 0) OR (parent_id IS NOT NULL AND free_comments > 0);
+    SELECT 1000 * POWER(10, COUNT(*)) INTO cost FROM "Item" WHERE "parentId" = parent_id AND "userId" = user_id;
+
+    IF NOT freebie AND cost > user_msats THEN
+        RAISE EXCEPTION 'SN_INSUFFICIENT_FUNDS';
+    END IF;
+
+    INSERT INTO "Item" (title, url, text, "userId", "parentId", created_at, updated_at)
+    VALUES (title, url, text, user_id, parent_id, now_utc(), now_utc()) RETURNING * INTO item;
+
+    IF freebie THEN
+        IF parent_id IS NULL THEN
+            UPDATE users SET "freePosts" = "freePosts" - 1 WHERE id = user_id;
+        ELSE
+            UPDATE users SET "freeComments" = "freeComments" - 1 WHERE id = user_id;
+        END IF;
+    ELSE
+        UPDATE users SET msats = msats - cost WHERE id = user_id;
+
+        INSERT INTO "ItemAct" (sats, "itemId", "userId", act, created_at, updated_at)
+        VALUES (cost / 1000, item.id, user_id, 'VOTE', now_utc(), now_utc());
+    END IF;
+
+    IF boost > 0 THEN
+        PERFORM item_act(item.id, user_id, 'BOOST', boost);
+    END IF;
+
+    RETURN item;
+END;
+$$;