added chapter view, fixes, added ratings, added chapter updates/deletions

app/server/graphql/resolvers/mappers/bookChapterMapper.ts

@@ -1,9 +1,15 @@
 import { call } from '@app/common';
+import { ensureRatingType } from '@app/server/helpers';
+import { IdentityContext } from '@app/server/identity';
 import { prisma } from '@app/server/prisma/client';
-import { BookChapter as BookChapterSchema } from '@generated/types';
+import { BookChapter as BookChapterSchema, RatingType } from '@generated/types';
 import { BookChapter } from '@prisma/client';
+import { toBookSchema } from './bookMapper';
 
-export async function toBookChapterSchema(model: BookChapter): Promise<BookChapterSchema> {
+export async function toBookChapterSchema(
+  model: BookChapter,
+  { req, res, identity }: IdentityContext
+): Promise<BookChapterSchema> {
   return {
     id: model.id,
     title: model.title,
@@ -11,7 +17,44 @@ export async function toBookChapterSchema(model: BookChapter): Promise<BookChapt
     updatedAt: model.createdAt.toISOString(),
     foreword: model.foreword,
     footnote: model.footnote,
+    content: model.content,
     sequenceNumber: model.sequenceNumber,
+    previousChapterId: await call(async () => {
+      const isFirst = model.sequenceNumber === 1;
+      if (isFirst) return null;
+      const previousChapter = await prisma.bookChapter.findUniqueOrThrow({
+        where: {
+          bookId_sequenceNumber: {
+            bookId: model.bookId,
+            sequenceNumber: model.sequenceNumber - 1
+          }
+        },
+        select: {
+          id: true
+        }
+      });
+      return previousChapter.id;
+    }),
+    nextChapterId: await call(async () => {
+      const book = await prisma.book.findUniqueOrThrow({
+        where: { id: model.bookId },
+        select: { chaptersTotal: true }
+      });
+
+      const isLast = model.sequenceNumber === book.chaptersTotal;
+      if (isLast) return null;
+
+      const nextChapter = await prisma.bookChapter.findUniqueOrThrow({
+        where: {
+          bookId_sequenceNumber: {
+            bookId: model.bookId,
+            sequenceNumber: model.sequenceNumber + 1
+          }
+        },
+        select: { id: true }
+      });
+      return nextChapter.id;
+    }),
     reviewsTotal: await call(async () => {
       const reviewsCount = await prisma.review.count({
         where: {
@@ -19,6 +62,28 @@ export async function toBookChapterSchema(model: BookChapter): Promise<BookChapt
         }
       });
       return reviewsCount;
+    }),
+    book: await call(async () => {
+      const book = await prisma.book.findUniqueOrThrow({
+        where: {
+          id: model.bookId
+        }
+      });
+      return toBookSchema(book, { req, res, identity });
+    }),
+    personalRating: await call(async () => {
+      if (identity == null) return RatingType.None;
+      const rating = await prisma.rating.findUnique({
+        where: {
+          userId_bookChapterId: {
+            userId: identity.id,
+            bookChapterId: model.id
+          }
+        }
+      });
+      if (rating == null) return RatingType.None;
+      ensureRatingType(rating.type);
+      return rating.type;
     })
   };
 }