exports.up = async function(knex) {
	await knex.schema.createTable('users', (table) => {
		table.increments('id');

		table.text('username', 32)
			.notNullable()
			.unique();

		table.text('email', 32)
			.notNullable()
			.unique();

		table.text('password')
			.notNullable();

		table.text('name', 32);
		table.text('bio', 1000);

		table.specificType('ip', 'inet');

		table.datetime('created_at')
			.notNullable()
			.defaultTo(knex.fn.now());
	});

	await knex.schema.createTable('shelves', (table) => {
		table.increments('id');

		table.text('slug')
			.notNullable();

		table.integer('founder_id')
			.notNullable()
			.references('id')
			.inTable('users');

		table.datetime('created_at')
			.notNullable()
			.defaultTo(knex.fn.now());
	});

	await knex.schema.createTable('shelves_settings', (table) => {
		table.increments('id');

		table.integer('shelf_id')
			.primary()
			.references('id')
			.inTable('shelves');

		table.text('name');
		table.text('title');
		table.text('description');

		table.enum('view_access', ['public', 'registered', 'private'])
			.notNullable()
			.defaultTo('public');

		table.enum('post_access', ['registered', 'private'])
			.notNullable()
			.defaultTo('public');

		table.boolean('is_nsfw');
	});

	await knex.schema.createTable('posts', (table) => {
		table.increments('id');

		table.text('title')
			.notNullable();

		table.text('body');
		table.text('url');

		table.integer('shelf_id')
			.notNullable()
			.references('id')
			.inTable('shelves');

		table.integer('user_id')
			.notNullable()
			.references('id')
			.inTable('users');

		table.datetime('created_at')
			.notNullable()
			.defaultTo(knex.fn.now());
	});

	await knex.raw(`ALTER TABLE posts ADD CONSTRAINT post_content CHECK (body IS NOT NULL OR url IS NOT NULL)`);
};

exports.down = async function(knex) {
	await knex.schema.dropTable('posts');
	await knex.schema.dropTable('shelves_settings');
	await knex.schema.dropTable('shelves');
	await knex.schema.dropTable('users');
};