Add Sequelize example

Fixes #29

Author: SpaceK33z

examples/with-sequelize/README.md

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+# Sequelize example
+
+This is an example of how to use GraphQL Authentication with [Sequelize](http://docs.sequelizejs.com/). There is no adapter package for Sequelize yet, so in this example we write our own adapter (see `SequelizeAdapter.js`).
+
+Sequelize is configured with SQLite, but only because it doesn't require you to manually start a database so this example stays simple. It also works with MySQL, Postgres etc.
+
+## Usage
+
+```
+npm i
+npm start
+```
+
+Go to http://localhost:4000 in your browser and start executing some queries and mutations!

examples/with-sequelize/SequelizeAdapter.js

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+const { User } = require('./database');
+
+// There currently is no package for a sequelize adapter, so we create one ourselves!
+
+class GraphqlAuthenticationSequelizeAdapter {
+  findUserById(ctx, id, info) {
+    return User.findById(id);
+  }
+  findUserByEmail(ctx, email, info) {
+    return User.findOne({ where: { email } });
+  }
+  async userExistsByEmail(ctx, email) {
+    const user = await User.count({ where: { email } });
+    return user > 0;
+  }
+
+  // the _createUser and _updateUser methods are just helper methods, they are not used by graphql-authentication.
+  _createUser(ctx, data) {
+    return User.create(data);
+  }
+  _updateUser(ctx, userId, data) {
+    return User.update(data, { where: { id: userId } });
+  }
+
+  createUserBySignup(ctx, data) {
+    return this._createUser(ctx, data);
+  }
+  createUserByInvite(ctx, data) {
+    return this._createUser(ctx, data);
+  }
+  updateUserConfirmToken(ctx, userId, data) {
+    return this._updateUser(ctx, userId, data);
+  }
+  updateUserLastLogin(ctx, userId, data) {
+    return this._updateUser(ctx, userId, data);
+  }
+  updateUserPassword(ctx, userId, data) {
+    return this._updateUser(ctx, userId, data);
+  }
+  updateUserResetToken(ctx, userId, data) {
+    return this._updateUser(ctx, userId, data);
+  }
+  updateUserInfo(ctx, userId, data) {
+    return this._updateUser(ctx, userId, data);
+  }
+  updateUserCompleteInvite(ctx, userId, data) {
+    return this._updateUser(ctx, userId, data);
+  }
+}
+
+module.exports = { GraphqlAuthenticationSequelizeAdapter };

examples/with-sequelize/database.js

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+const Sequelize = require('sequelize');
+const sequelize = new Sequelize({ dialect: 'sqlite' });
+
+const User = sequelize.define('user', {
+  email: Sequelize.STRING,
+  password: Sequelize.STRING,
+  name: Sequelize.STRING,
+  inviteToken: Sequelize.STRING,
+  inviteAccepted: Sequelize.BOOLEAN,
+  emailConfirmed: Sequelize.BOOLEAN,
+  emailConfirmToken: Sequelize.STRING,
+  resetToken: Sequelize.STRING,
+  resetExpires: Sequelize.DATE,
+  deletedAt: Sequelize.DATE,
+  lastLogin: Sequelize.DATE,
+  joinedAt: Sequelize.DATE,
+  isSuper: Sequelize.BOOLEAN
+});
+
+sequelize.sync();
+
+module.exports = { User };

examples/with-sequelize/emails/inviteUser/html.pug

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+p Hi,
+p You are invited to join *your project*!
+p
+  a(href=mailAppUrl + '/register/' + email + '/' + inviteToken) Accept invite.

examples/with-sequelize/emails/inviteUser/subject.pug

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+= `Invited for *your project*!`

examples/with-sequelize/emails/passwordReset/html.pug

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+p Hi,
+p You requested a password reset on *your project*.
+p
+  a(href=mailAppUrl + '/login/reset-password/' + email + '/' + resetToken) Reset my password.

examples/with-sequelize/emails/passwordReset/subject.pug

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+= `Confirm your email on *your project*`

examples/with-sequelize/emails/signupUser/html.pug

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+p Hi,
+p You have just created an account on *your project*! As a last step, please confirm your email:
+p
+  a(href=mailAppUrl + '/confirm-email/' + email + '/' + emailConfirmToken) Confirm email.

examples/with-sequelize/emails/signupUser/subject.pug

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+= `Confirm your email on *your project*`

examples/with-sequelize/package.json

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+{
+  "name": "graphql-authentication-with-sequelize-example",
+  "private": true,
+  "version": "1.0.0",
+  "license": "ISC",
+  "dependencies": {
+    "email-templates": "^4.0.1",
+    "graphql-authentication": "^0.5.3",
+    "graphql-yoga": "^1.14.12",
+    "sequelize": "^4.38.0",
+    "sqlite3": "^4.0.2"
+  },
+  "scripts": {
+    "start": "node server.js"
+  }
+}