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src/graphql/game.ts

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+import { GAME_SYSTEMS } from "@/lib/game";
+import { ApolloError, gql } from "apollo-server-micro";
+import { pageTypeDefs } from "./page";
+
+export const gameTypeDefs = gql`
+  ${pageTypeDefs}
+
+  enum GameSystem {
+    ${GAME_SYSTEMS.join('\n')}
+  }
+
+  type Game {
+    id: ID!
+    name: String!
+    system: GameSystem!
+  }
+
+  input GameFilter {
+    system: GameSystem
+  }
+
+  enum GameOrderBy {
+    NAME_ASC
+    NAME_DESC
+  }
+  
+  type GameEdge {
+    node: Game
+    cursor: String
+  }
+
+  type GameConnection {
+    edges: [GameEdge]
+    pageInfo: PageInfo
+  }
+
+  type Query {
+    game(id: ID!): Game
+    games(first: Int!, after: String, orderBy: GameOrderBy, filter: GameFilter): GameConnection
+  }
+`;
+
+const GAME = {
+  id: '0',
+  name: 'Pokemon Crystal Version',
+  system: 'gbc'
+};
+
+export const gameResolvers = {
+  Query: {
+    game: (_:any, { id }:{ id:string }) => {
+      if(!id) throw new ApolloError('Invalid ID');
+      
+      switch(id) {
+        case '0':
+          return GAME;
+
+        default:
+          return null;
+      }
+    },
+
+    games: (_: any, { first, after, orderBy, filter }: { first: number, after?: string, orderBy?: string, filter?: { system?: string } }) => {
+      if(first > 100) throw new ApolloError('first cannot be greater than 100');
+      return {
+        edges: [
+          { node: GAME }
+        ],
+        pageInfo: {
+          hasNextPage: false,
+          hasPreviousPage: false,
+          startCursor: '0'
+        },
+      };
+    },
+  },
+};