first pass at graphql support

Author: yorek

api/graphql/function.json

@@ -0,0 +1,18 @@
+{
+  "bindings": [
+    {
+      "authLevel": "anonymous",
+      "type": "httpTrigger",
+      "direction": "in",
+      "name": "req",
+      "methods": ["get", "post"],
+      "route": "todo/graphql"
+    },
+    {
+      "type": "http",
+      "direction": "out",
+      "name": "$return"
+    }
+  ],
+  "scriptFile": "../dist/graphql/index.js"
+}

api/graphql/index.ts

@@ -0,0 +1,111 @@
+import { AzureFunction, Context, HttpRequest } from '@azure/functions'
+import { PrismaClient, Todo } from '@prisma/client'
+import { ApolloServer, gql } from "apollo-server-azure-functions";
+import { readFileSync } from "fs";
+
+const prisma = new PrismaClient()
+
+// Construct a schema, using GraphQL schema language
+const typeDefs = gql`
+  type Query {
+      todo(
+        id: ID!
+      ): Todo
+
+      todoList: [Todo!]!
+  }
+
+  type Mutation {
+    
+    addTodo(
+      title: String!,
+      completed: Boolean
+    ): Todo
+
+    updateTodo(
+      id: ID!,
+      title: String,
+      completed: Boolean
+    ): Todo
+
+    deleteTodo(
+      id: ID!
+    ): Todo
+
+  }
+
+  type Todo {
+      id: ID!
+      title: String!
+      completed: Boolean
+  }
+`
+
+// Provide resolver functions for your schema fields
+const resolvers = {
+  Query: {
+
+    todoList: () => {
+      return prisma.todo.findMany().then(value => value.map(todo => toClientToDo(todo)))
+    },
+
+    todo: (parent, args) => {
+      return prisma.todo.findUnique({
+        where: {
+          id: parseInt(args.id, 10)
+        },
+      }).then(value => toClientToDo(value))
+    }
+
+  },
+
+  Mutation: {
+
+    addTodo: (parent, args) => {
+      return prisma.todo.create({
+        data: {
+          todo: args.title,
+          completed: args.completed
+        }
+      }).then(value => toClientToDo(value))
+    },
+
+    updateTodo: (parent, args) => {
+      return prisma.todo.update({
+        data: {
+          todo: args.title,
+          completed: args.completed ?? false
+        },
+        where: {
+          id: parseInt(args.id, 10)
+        }
+      }).then(value => toClientToDo(value))
+    },
+
+    deleteTodo: (parent, args) => {
+      return prisma.todo.delete({
+        where: {
+          id: parseInt(args.id, 10)
+        }
+      }).then(value => toClientToDo(value))
+    }
+
+  }
+};
+
+const toClientToDo = (todo: Todo) => {
+  return {
+    id: todo.id,
+    title: todo.todo ,
+    completed: todo.completed 
+  }
+}
+
+// @ts-ignore
+const server = new ApolloServer({ typeDefs, resolvers, debug: true, playground: true });
+
+export default server.createHandler({
+  cors: {
+    origin: '*'
+  },
+});

api/host.json

@@ -10,6 +10,6 @@
   },
   "extensionBundle": {
     "id": "Microsoft.Azure.Functions.ExtensionBundle",
-    "version": "[1.*, 2.0.0)"
+    "version": "[2.*, 3.0.0)"
   }
 }