Add initial database migration

.gitignore

@@ -58,3 +58,7 @@ public/generated/*
 
 # Don't commit environment file
 .env
+
+# Don't commit database migration config file or dev database
+knexfile.js
+dev.sqlite3

app/migration_helpers.js

@@ -0,0 +1,54 @@
+'use strict';
+
+/**
+ * Migration helper methods
+ * @type {Object}
+ */
+module.exports = {
+
+	get_db_type(knex) {
+		switch(knex.client.config.client) {
+			case 'postgresql':
+			case 'postgres':
+			case 'pg':
+				return 'pg';
+
+			default:
+				return knex.client.config.client;
+		}
+	},
+
+	pg_timestamp_update_function () {
+		return `CREATE OR REPLACE FUNCTION progblog_update_modified_column()
+				RETURNS TRIGGER AS $$
+				BEGIN
+				    NEW.updated_at = now();
+				    RETURN NEW;
+				END;
+				$$ language 'plpgsql';`;
+	},
+
+	pg_create_timestamp_update_trigger(table) {
+		return `CREATE TRIGGER update_${table}_modtime
+				BEFORE UPDATE ON "${table}"
+				FOR EACH ROW
+				EXECUTE PROCEDURE progblog_update_modified_column();`;
+	},
+
+	pg_delete_timestamp_update_trigger(table) {
+		return `DROP TRIGGER IF EXISTS update_${table}_modtime ON "${table}";`;
+	},
+
+	sqlite3_create_timestamp_update_trigger(table) {
+		return `CREATE TRIGGER IF NOT EXISTS [UpdateModified]
+				BEFORE UPDATE ON "${table}"
+				FOR EACH ROW
+				BEGIN
+					UPDATE "${table}" SET updated_at = CURRENT_TIMESTAMP WHERE id = old.id;
+				END`;
+	},
+
+	sqlite3_delete_timestamp_update_trigger() {
+		return `DROP TRIGGER IF EXISTS [UpdateModified]`;
+	}
+};

migrations/20160224105517_initial.js

@@ -0,0 +1,74 @@
+'use strict';
+
+const helpers = require('../app/migration_helpers');
+
+exports.up = function(knex, Promise) {
+	const dbType = helpers.get_db_type(knex);
+
+	// Defer has the promise resulting from creating the initial tables
+	let defer = knex.schema.createTableIfNotExists('users', (table) => {
+		table.comment('User authentication table');
+		table.increments()
+			.unsigned();
+		table.string('user');
+		table.binary('password_hash');
+		table.timestamp('created_at')
+			.defaultTo(knex.fn.now());
+		table.timestamp('updated_at')
+			.defaultTo(knex.fn.now());
+	}).then(() => {
+		return knex.schema.createTableIfNotExists('posts', (table) => {
+			table.comment('Blog post table');
+			table.increments()
+				.unsigned();
+			table.integer('created_by')
+				.unsigned()
+				.references('users.id');
+			table.string('uri')
+				.index()
+				.comment('The uri segment of the blog post');
+			table.string('title')
+				.comment('The title of the blog post');
+			table.text('content')
+				.comment('The content of the blog post');
+			table.timestamp('created_at')
+				.defaultTo(knex.fn.now());
+			table.timestamp('updated_at')
+				.defaultTo(knex.fn.now());
+		});
+	});
+
+	if ('pg' === dbType) {
+		// Create the function to update
+		return knex.schema.raw(helpers.pg_timestamp_update_function())
+			// Create the tables
+			.then(() => defer)
+
+			// Add trigger for tables
+			.then(() => knex.schema.raw(helpers.pg_create_timestamp_update_trigger('users')))
+			.then(() => knex.schema.raw(helpers.pg_create_timestamp_update_trigger('posts')));
+	} else if ('sqlite3' === dbType) {
+		return defer.then(() => knex.schema.raw(helpers.sqlite3_create_timestamp_update_trigger('users')))
+			.then(() => knex.schema.raw(helpers.sqlite3_create_timestamp_update_trigger('posts')));
+	} else {
+		return defer;
+	}
+};
+
+exports.down = function(knex, Promise) {
+	const dbType = helpers.get_db_type(knex);
+	let defer = knex.schema.dropTableIfExists('posts')
+		.then(() => knex.schema.dropTableIfExists('users'));
+
+	if ('pg' === dbType) {
+		return knex.schema.raw(helpers.pg_delete_timestamp_update_trigger('users'))
+			.then(() => knex.schema.raw(helpers.pg_delete_timestamp_update_trigger('posts')))
+			.then(() => defer);
+	} else if ('sqlite3' === dbType) {
+		return knex.schema.raw(helpers.sqlite3_delete_timestamp_update_trigger('users'))
+			.then(() => knex.schema.raw(helpers.sqlite3_delete_timestamp_update_trigger('posts')))
+			.then(() => defer);
+	} else {
+		return defer;
+	}
+};

package.json

@@ -17,13 +17,16 @@
     "glob": "^6.0.4",
     "helmet": "^1.1.0",
     "highlight.js": "^9.1.0",
+    "knex": "^0.10.0",
     "lodash": "^4.5.0",
     "marked": "^0.3.5",
     "morgan": "~1.6.1",
     "nodemon": "^1.9.0",
+    "scrypt": "^6.0.1",
+    "sqlite3": "^3.1.1",
     "winston": "^2.1.1"
   },
-  "description": "An Opinionated Take on express with use of ES6 features",
+  "description": "A simple blog with built-in code snippet functionality",
   "devDependencies": {
     "chai": "^3.4.1",
     "chai-as-promised": "^5.2.0",
@@ -42,9 +45,6 @@
     "pre-commit": "^1.1.2",
     "supertest": "^1.1.0"
   },
-  "directories": {
-    "lib": "./lib"
-  },
   "engines": {
     "node": ">4.0.0"
   },
@@ -63,7 +63,7 @@
   },
   "repository": {
     "type": "git",
-    "url": "https://github.com/timw4mail/crispy-train.git"
+    "url": "https://git.timshomepage.net/timw4mail/ProgBlog.git"
   },
   "scripts": {
     "start": "nodemon server.js",