refactor: create/update/delete one view instead of many (#1384)

Closes #1359

server/src/core/view/resolvers/view.resolver.ts

@@ -1,6 +1,7 @@
 import {
   BadRequestException,
   ForbiddenException,
+  NotFoundException,
   UseGuards,
 } from '@nestjs/common';
 import { Args, Mutation, Query, Resolver } from '@nestjs/graphql';
@@ -15,9 +16,16 @@ import {
   ReadViewAbilityHandler,
   UpdateViewAbilityHandler,
 } from 'src/ability/handlers/view.ability-handler';
+import { AffectedRows } from 'src/core/@generated/prisma/affected-rows.output';
+import { CreateManyViewArgs } from 'src/core/@generated/view/create-many-view.args';
+import { CreateOneViewArgs } from 'src/core/@generated/view/create-one-view.args';
+import { DeleteManyViewArgs } from 'src/core/@generated/view/delete-many-view.args';
+import { DeleteOneViewArgs } from 'src/core/@generated/view/delete-one-view.args';
 import { FindManyViewArgs } from 'src/core/@generated/view/find-many-view.args';
+import { UpdateOneViewArgs } from 'src/core/@generated/view/update-one-view.args';
 import { View } from 'src/core/@generated/view/view.model';
 import { ViewService } from 'src/core/view/services/view.service';
+import { AuthWorkspace } from 'src/decorators/auth-workspace.decorator';
 import { CheckAbilities } from 'src/decorators/check-abilities.decorator';
 import {
   PrismaSelect,
@@ -26,17 +34,32 @@ import {
 import { UserAbility } from 'src/decorators/user-ability.decorator';
 import { AbilityGuard } from 'src/guards/ability.guard';
 import { JwtAuthGuard } from 'src/guards/jwt.auth.guard';
-import { UpdateOneViewArgs } from 'src/core/@generated/view/update-one-view.args';
-import { AuthWorkspace } from 'src/decorators/auth-workspace.decorator';
-import { AffectedRows } from 'src/core/@generated/prisma/affected-rows.output';
-import { CreateManyViewArgs } from 'src/core/@generated/view/create-many-view.args';
-import { DeleteManyViewArgs } from 'src/core/@generated/view/delete-many-view.args';
 
 @UseGuards(JwtAuthGuard)
 @Resolver(() => View)
 export class ViewResolver {
   constructor(private readonly viewService: ViewService) {}
 
+  @Mutation(() => View, {
+    nullable: false,
+  })
+  @UseGuards(AbilityGuard)
+  @CheckAbilities(CreateViewAbilityHandler)
+  async createOneView(
+    @Args() args: CreateOneViewArgs,
+    @AuthWorkspace() workspace: Workspace,
+    @PrismaSelector({ modelName: 'View' })
+    prismaSelect: PrismaSelect<'View'>,
+  ): Promise<Partial<View>> {
+    return this.viewService.create({
+      data: {
+        ...args.data,
+        workspace: { connect: { id: workspace.id } },
+      },
+      select: prismaSelect.value,
+    } as Prisma.ViewCreateArgs);
+  }
+
   @Mutation(() => AffectedRows)
   @UseGuards(AbilityGuard)
   @CheckAbilities(CreateViewAbilityHandler)
@@ -91,6 +114,43 @@ export class ViewResolver {
     } as Prisma.ViewUpdateArgs);
   }
 
+  @Mutation(() => View, {
+    nullable: false,
+  })
+  @UseGuards(AbilityGuard)
+  @CheckAbilities(DeleteViewAbilityHandler)
+  async deleteOneView(
+    @Args() args: DeleteOneViewArgs,
+    @AuthWorkspace() workspace: Workspace,
+  ): Promise<View> {
+    const viewToDelete = await this.viewService.findUnique({
+      where: args.where,
+    });
+
+    if (!viewToDelete) {
+      throw new NotFoundException();
+    }
+
+    const { objectId } = viewToDelete;
+
+    const viewsNb = await this.viewService.count({
+      where: {
+        objectId: { equals: objectId },
+        workspaceId: { equals: workspace.id },
+      },
+    });
+
+    if (viewsNb <= 1) {
+      throw new ForbiddenException(
+        `Deleting last '${objectId}' view is not allowed`,
+      );
+    }
+
+    return this.viewService.delete({
+      where: args.where,
+    });
+  }
+
   @Mutation(() => AffectedRows, {
     nullable: false,
   })