Setup table migration and update schemas/endpoints

data/dbConfig.js

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+require("dotenv").config();
+
+const knex = require('knex');
+const config = require('../knexfile');
+
+const environment = process.env.DB_ENV || 'development';
+
+module.exports = knex(config[environment]);

data/migrations/01-createUsersSessionsAndDailyAveragesTables.js

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+
+exports.up = function(knex) {
+	return knex.schema
+
+	.createTable('users', tbl => {
+		tbl
+			.increments();
+		tbl
+			.string('email')
+			.notNullable()
+			.unique();
+		tbl
+			.string('username')
+			.notNullable()
+			.unique();
+		tbl
+			.string('password')
+			.notNullable();
+	})
+
+	.createTable('sessions', tbl => {
+		tbl
+			.increments();
+		tbl
+			.integer('user_id')
+			.unsigned()
+			.notNullable()
+			.references('users.id')
+			.onUpdate('CASCADE')
+			.onDelete('CASCADE');
+		tbl
+			.datetime('bed_time')
+			.notNullable();
+		tbl
+			.datetime('wake_time');
+		tbl
+			.integer('bed_tiredness')
+			.unsigned();
+		tbl
+			.integer('wake_mood')
+			.unsigned();
+	})
+
+	.createTable('dailyAverages', tbl => {
+		tbl
+			.increments();
+		tbl
+			.integer('session_user')
+			.unsigned()
+			.notNullable()
+			.references('sessions.user_id')
+			.onUpdate('CASCADE')
+			.onDelete('CASCADE');
+		tbl
+			.datetime('session_date')
+			.notNullable()
+			.references('sessions.wake_time')
+			.onUpdate('CASCADE')
+			.onDelete('CASCADE');
+		tbl
+			.integer('sleep_duration')
+			.unsigned();
+		tbl
+			.float('average_mood');
+	})
+};
+
+exports.down = function(knex) {
+	return knex.schema
+	.dropTableIfExists('dailyAverages')
+	.dropTableIfExists('sessions')
+	.dropTableIfExists('users');
+};