1 files changed, 337 insertions, 0 deletions
diff --git a/finished-application/backend/src/resolvers/Mutation.js b/finished-application/backend/src/resolvers/Mutation.js
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+++ b/finished-application/backend/src/resolvers/Mutation.js
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+const bcrypt = require('bcryptjs');
+const jwt = require('jsonwebtoken');
+const { randomBytes } = require('crypto');
+const { promisify } = require('util');
+const { transport, makeANiceEmail } = require('../mail');
+const { hasPermission } = require('../utils');
+const stripe = require('../stripe');
+
+const Mutations = {
+  async createItem(parent, args, ctx, info) {
+    if (!ctx.request.userId) {
+      throw new Error('You must be logged in to do that!');
+    }
+
+    const item = await ctx.db.mutation.createItem(
+      {
+        data: {
+          // This is how to create a relationship between the Item and the User
+          user: {
+            connect: {
+              id: ctx.request.userId,
+            },
+          },
+          ...args,
+        },
+      },
+      info
+    );
+
+    console.log(item);
+
+    return item;
+  },
+  updateItem(parent, args, ctx, info) {
+    // first take a copy of the updates
+    const updates = { ...args };
+    // remove the ID from the updates
+    delete updates.id;
+    // run the update method
+    return ctx.db.mutation.updateItem(
+      {
+        data: updates,
+        where: {
+          id: args.id,
+        },
+      },
+      info
+    );
+  },
+  async deleteItem(parent, args, ctx, info) {
+    const where = { id: args.id };
+    // 1. find the item
+    const item = await ctx.db.query.item({ where }, `{ id title user { id }}`);
+    // 2. Check if they own that item, or have the permissions
+    const ownsItem = item.user.id === ctx.request.userId;
+    const hasPermissions = ctx.request.user.permissions.some(permission =>
+      ['ADMIN', 'ITEMDELETE'].includes(permission)
+    );
+
+    if (!ownsItem && hasPermissions) {
+      throw new Error("You don't have permission to do that!");
+    }
+
+    // 3. Delete it!
+    return ctx.db.mutation.deleteItem({ where }, info);
+  },
+  async signup(parent, args, ctx, info) {
+    // lowercase their email
+    args.email = args.email.toLowerCase();
+    // hash their password
+    const password = await bcrypt.hash(args.password, 10);
+    // create the user in the database
+    const user = await ctx.db.mutation.createUser(
+      {
+        data: {
+          ...args,
+          password,
+          permissions: { set: ['USER'] },
+        },
+      },
+      info
+    );
+    // create the JWT token for them
+    const token = jwt.sign({ userId: user.id }, process.env.APP_SECRET);
+    // We set the jwt as a cookie on the response
+    ctx.response.cookie('token', token, {
+      httpOnly: true,
+      maxAge: 1000 * 60 * 60 * 24 * 365, // 1 year cookie
+    });
+    // Finalllllly we return the user to the browser
+    return user;
+  },
+  async signin(parent, { email, password }, ctx, info) {
+    // 1. check if there is a user with that email
+    const user = await ctx.db.query.user({ where: { email } });
+    if (!user) {
+      throw new Error(`No such user found for email ${email}`);
+    }
+    // 2. Check if their password is correct
+    const valid = await bcrypt.compare(password, user.password);
+    if (!valid) {
+      throw new Error('Invalid Password!');
+    }
+    // 3. generate the JWT Token
+    const token = jwt.sign({ userId: user.id }, process.env.APP_SECRET);
+    // 4. Set the cookie with the token
+    ctx.response.cookie('token', token, {
+      httpOnly: true,
+      maxAge: 1000 * 60 * 60 * 24 * 365,
+    });
+    // 5. Return the user
+    return user;
+  },
+  signout(parent, args, ctx, info) {
+    ctx.response.clearCookie('token');
+    return { message: 'Goodbye!' };
+  },
+  async requestReset(parent, args, ctx, info) {
+    // 1. Check if this is a real user
+    const user = await ctx.db.query.user({ where: { email: args.email } });
+    if (!user) {
+      throw new Error(`No such user found for email ${args.email}`);
+    }
+    // 2. Set a reset token and expiry on that user
+    const randomBytesPromiseified = promisify(randomBytes);
+    const resetToken = (await randomBytesPromiseified(20)).toString('hex');
+    const resetTokenExpiry = Date.now() + 3600000; // 1 hour from now
+    const res = await ctx.db.mutation.updateUser({
+      where: { email: args.email },
+      data: { resetToken, resetTokenExpiry },
+    });
+    // 3. Email them that reset token
+    const mailRes = await transport.sendMail({
+      from: 'wes@wesbos.com',
+      to: user.email,
+      subject: 'Your Password Reset Token',
+      html: makeANiceEmail(`Your Password Reset Token is here!
+      \n\n
+      <a href="${process.env
+        .FRONTEND_URL}/reset?resetToken=${resetToken}">Click Here to Reset</a>`),
+    });
+
+    // 4. Return the message
+    return { message: 'Thanks!' };
+  },
+  async resetPassword(parent, args, ctx, info) {
+    // 1. check if the passwords match
+    if (args.password !== args.confirmPassword) {
+      throw new Error("Yo Passwords don't match!");
+    }
+    // 2. check if its a legit reset token
+    // 3. Check if its expired
+    const [user] = await ctx.db.query.users({
+      where: {
+        resetToken: args.resetToken,
+        resetTokenExpiry_gte: Date.now() - 3600000,
+      },
+    });
+    if (!user) {
+      throw new Error('This token is either invalid or expired!');
+    }
+    // 4. Hash their new password
+    const password = await bcrypt.hash(args.password, 10);
+    // 5. Save the new password to the user and remove old resetToken fields
+    const updatedUser = await ctx.db.mutation.updateUser({
+      where: { email: user.email },
+      data: {
+        password,
+        resetToken: null,
+        resetTokenExpiry: null,
+      },
+    });
+    // 6. Generate JWT
+    const token = jwt.sign({ userId: updatedUser.id }, process.env.APP_SECRET);
+    // 7. Set the JWT cookie
+    ctx.response.cookie('token', token, {
+      httpOnly: true,
+      maxAge: 1000 * 60 * 60 * 24 * 365,
+    });
+    // 8. return the new user
+    return updatedUser;
+  },
+  async updatePermissions(parent, args, ctx, info) {
+    // 1. Check if they are logged in
+    if (!ctx.request.userId) {
+      throw new Error('You must be logged in!');
+    }
+    // 2. Query the current user
+    const currentUser = await ctx.db.query.user(
+      {
+        where: {
+          id: ctx.request.userId,
+        },
+      },
+      info
+    );
+    // 3. Check if they have permissions to do this
+    hasPermission(currentUser, ['ADMIN', 'PERMISSIONUPDATE']);
+    // 4. Update the permissions
+    return ctx.db.mutation.updateUser(
+      {
+        data: {
+          permissions: {
+            set: args.permissions,
+          },
+        },
+        where: {
+          id: args.userId,
+        },
+      },
+      info
+    );
+  },
+  async addToCart(parent, args, ctx, info) {
+    // 1. Make sure they are signed in
+    const { userId } = ctx.request;
+    if (!userId) {
+      throw new Error('You must be signed in soooon');
+    }
+    // 2. Query the users current cart
+    const [existingCartItem] = await ctx.db.query.cartItems({
+      where: {
+        user: { id: userId },
+        item: { id: args.id },
+      },
+    });
+    // 3. Check if that item is already in their cart and increment by 1 if it is
+    if (existingCartItem) {
+      console.log('This item is already in their cart');
+      return ctx.db.mutation.updateCartItem(
+        {
+          where: { id: existingCartItem.id },
+          data: { quantity: existingCartItem.quantity + 1 },
+        },
+        info
+      );
+    }
+    // 4. If its not, create a fresh CartItem for that user!
+    return ctx.db.mutation.createCartItem(
+      {
+        data: {
+          user: {
+            connect: { id: userId },
+          },
+          item: {
+            connect: { id: args.id },
+          },
+        },
+      },
+      info
+    );
+  },
+  async removeFromCart(parent, args, ctx, info) {
+    // 1. Find the cart item
+    const cartItem = await ctx.db.query.cartItem(
+      {
+        where: {
+          id: args.id,
+        },
+      },
+      `{ id, user { id }}`
+    );
+    // 1.5 Make sure we found an item
+    if (!cartItem) throw new Error('No CartItem Found!');
+    // 2. Make sure they own that cart item
+    if (cartItem.user.id !== ctx.request.userId) {
+      throw new Error('Cheatin huhhhh');
+    }
+    // 3. Delete that cart item
+    return ctx.db.mutation.deleteCartItem(
+      {
+        where: { id: args.id },
+      },
+      info
+    );
+  },
+  async createOrder(parent, args, ctx, info) {
+    // 1. Query the current user and make sure they are signed in
+    const { userId } = ctx.request;
+    if (!userId) throw new Error('You must be signed in to complete this order.');
+    const user = await ctx.db.query.user(
+      { where: { id: userId } },
+      `{
+      id
+      name
+      email
+      cart {
+        id
+        quantity
+        item { title price id description image largeImage }
+      }}`
+    );
+    // 2. recalculate the total for the price
+    const amount = user.cart.reduce(
+      (tally, cartItem) => tally + cartItem.item.price * cartItem.quantity,
+      0
+    );
+    console.log(`Going to charge for a total of ${amount}`);
+    // 3. Create the stripe charge (turn token into $$$)
+    const charge = await stripe.charges.create({
+      amount,
+      currency: 'USD',
+      source: args.token,
+    });
+    // 4. Convert the CartItems to OrderItems
+    const orderItems = user.cart.map(cartItem => {
+      const orderItem = {
+        ...cartItem.item,
+        quantity: cartItem.quantity,
+        user: { connect: { id: userId } },
+      };
+      delete orderItem.id;
+      return orderItem;
+    });
+
+    // 5. create the Order
+    const order = await ctx.db.mutation.createOrder({
+      data: {
+        total: charge.amount,
+        charge: charge.id,
+        items: { create: orderItems },
+        user: { connect: { id: userId } },
+      },
+    });
+    // 6. Clean up - clear the users cart, delete cartItems
+    const cartItemIds = user.cart.map(cartItem => cartItem.id);
+    await ctx.db.mutation.deleteManyCartItems({
+      where: {
+        id_in: cartItemIds,
+      },
+    });
+    // 7. Return the Order to the client
+    return order;
+  },
+};
+
+module.exports = Mutations;