import BetterSqlite3 from 'better-sqlite3';
import { sql } from 'drizzle-orm';
import type { BetterSQLite3Database } from 'drizzle-orm/better-sqlite3';
import { drizzle } from 'drizzle-orm/better-sqlite3';
import { afterAll, afterEach, beforeAll, expect, test } from 'vitest';
import { reset, seed } from '../../../src/index.ts';
import * as schema from './sqliteSchema.ts';

let client: BetterSqlite3.Database;
let db: BetterSQLite3Database;

beforeAll(async () => {
	client = new BetterSqlite3(':memory:');

	db = drizzle(client);

	db.run(
		sql.raw(`
    CREATE TABLE \`customer\` (
	\`id\` text PRIMARY KEY NOT NULL,
	\`company_name\` text NOT NULL,
	\`contact_name\` text NOT NULL,
	\`contact_title\` text NOT NULL,
	\`address\` text NOT NULL,
	\`city\` text NOT NULL,
	\`postal_code\` text,
	\`region\` text,
	\`country\` text NOT NULL,
	\`phone\` text NOT NULL,
	\`fax\` text
);
    `),
	);

	db.run(
		sql.raw(`
    CREATE TABLE \`order_detail\` (
	\`unit_price\` numeric NOT NULL,
	\`quantity\` integer NOT NULL,
	\`discount\` numeric NOT NULL,
	\`order_id\` integer NOT NULL,
	\`product_id\` integer NOT NULL
);
    `),
	);

	db.run(
		sql.raw(`
    CREATE TABLE \`employee\` (
	\`id\` integer PRIMARY KEY NOT NULL,
	\`last_name\` text NOT NULL,
	\`first_name\` text,
	\`title\` text NOT NULL,
	\`title_of_courtesy\` text NOT NULL,
	\`birth_date\` integer NOT NULL,
	\`hire_date\` integer NOT NULL,
	\`address\` text NOT NULL,
	\`city\` text NOT NULL,
	\`postal_code\` text NOT NULL,
	\`country\` text NOT NULL,
	\`home_phone\` text NOT NULL,
	\`extension\` integer NOT NULL,
	\`notes\` text NOT NULL,
	\`reports_to\` integer,
	\`photo_path\` text
);        
    `),
	);

	db.run(
		sql.raw(`
    CREATE TABLE \`order\` (
	\`id\` integer PRIMARY KEY NOT NULL,
	\`order_date\` integer NOT NULL,
	\`required_date\` integer NOT NULL,
	\`shipped_date\` integer,
	\`ship_via\` integer NOT NULL,
	\`freight\` numeric NOT NULL,
	\`ship_name\` text NOT NULL,
	\`ship_city\` text NOT NULL,
	\`ship_region\` text,
	\`ship_postal_code\` text,
	\`ship_country\` text NOT NULL,
	\`customer_id\` text NOT NULL,
	\`employee_id\` integer NOT NULL
);        
    `),
	);

	db.run(
		sql.raw(`
    CREATE TABLE \`product\` (
	\`id\` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
	\`name\` text NOT NULL,
	\`quantity_per_unit\` text NOT NULL,
	\`unit_price\` numeric NOT NULL,
	\`units_in_stock\` integer NOT NULL,
	\`units_on_order\` integer NOT NULL,
	\`reorder_level\` integer NOT NULL,
	\`discontinued\` integer NOT NULL,
	\`supplier_id\` integer NOT NULL
);        
    `),
	);

	db.run(
		sql.raw(`
    CREATE TABLE \`supplier\` (
	\`id\` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
	\`company_name\` text NOT NULL,
	\`contact_name\` text NOT NULL,
	\`contact_title\` text NOT NULL,
	\`address\` text NOT NULL,
	\`city\` text NOT NULL,
	\`region\` text,
	\`postal_code\` text NOT NULL,
	\`country\` text NOT NULL,
	\`phone\` text NOT NULL
);        
    `),
	);
});

afterAll(async () => {
	client.close();
});

afterEach(async () => {
	await reset(db, schema);
});

const checkSoftRelations = (
	customers: (typeof schema.customers.$inferSelect)[],
	details: (typeof schema.details.$inferSelect)[],
	employees: (typeof schema.employees.$inferSelect)[],
	orders: (typeof schema.orders.$inferSelect)[],
	products: (typeof schema.products.$inferSelect)[],
	suppliers: (typeof schema.suppliers.$inferSelect)[],
) => {
	// employees soft relations check
	const employeeIds = new Set(employees.map((employee) => employee.id));
	const employeesPredicate = employees.every((employee) =>
		employee.reportsTo !== null && employeeIds.has(employee.reportsTo)
	);
	expect(employeesPredicate).toBe(true);

	// orders soft relations check
	const customerIds = new Set(customers.map((customer) => customer.id));
	const ordersPredicate1 = orders.every((order) => order.customerId !== null && customerIds.has(order.customerId));
	expect(ordersPredicate1).toBe(true);

	const ordersPredicate2 = orders.every((order) => order.employeeId !== null && employeeIds.has(order.employeeId));
	expect(ordersPredicate2).toBe(true);

	// product soft relations check
	const supplierIds = new Set(suppliers.map((supplier) => supplier.id));
	const productsPredicate = products.every((product) =>
		product.supplierId !== null && supplierIds.has(product.supplierId)
	);
	expect(productsPredicate).toBe(true);

	// details soft relations check
	const orderIds = new Set(orders.map((order) => order.id));
	const detailsPredicate1 = details.every((detail) => detail.orderId !== null && orderIds.has(detail.orderId));
	expect(detailsPredicate1).toBe(true);

	const productIds = new Set(products.map((product) => product.id));
	const detailsPredicate2 = details.every((detail) => detail.productId !== null && productIds.has(detail.productId));
	expect(detailsPredicate2).toBe(true);
};

test('basic seed, soft relations test', async () => {
	await seed(db, schema);

	const customers = await db.select().from(schema.customers);
	const details = await db.select().from(schema.details);
	const employees = await db.select().from(schema.employees);
	const orders = await db.select().from(schema.orders);
	const products = await db.select().from(schema.products);
	const suppliers = await db.select().from(schema.suppliers);

	expect(customers.length).toBe(10);
	expect(details.length).toBe(10);
	expect(employees.length).toBe(10);
	expect(orders.length).toBe(10);
	expect(products.length).toBe(10);
	expect(suppliers.length).toBe(10);

	checkSoftRelations(customers, details, employees, orders, products, suppliers);
});

test("redefine(refine) orders count using 'with' in customers, soft relations test", async () => {
	await seed(db, schema, { count: 11 }).refine(() => ({
		customers: {
			count: 4,
			with: {
				orders: 2,
			},
		},
		orders: {
			count: 13,
		},
	}));

	const customers = await db.select().from(schema.customers);
	const details = await db.select().from(schema.details);
	const employees = await db.select().from(schema.employees);
	const orders = await db.select().from(schema.orders);
	const products = await db.select().from(schema.products);
	const suppliers = await db.select().from(schema.suppliers);

	expect(customers.length).toBe(4);
	expect(details.length).toBe(11);
	expect(employees.length).toBe(11);
	expect(orders.length).toBe(8);
	expect(products.length).toBe(11);
	expect(suppliers.length).toBe(11);

	checkSoftRelations(customers, details, employees, orders, products, suppliers);
});

test("sequential using of 'with', soft relations test", async () => {
	await seed(db, schema, { count: 11 }).refine(() => ({
		customers: {
			count: 4,
			with: {
				orders: 2,
			},
		},
		orders: {
			count: 12,
			with: {
				details: 3,
			},
		},
	}));

	const customers = await db.select().from(schema.customers);
	const details = await db.select().from(schema.details);
	const employees = await db.select().from(schema.employees);
	const orders = await db.select().from(schema.orders);
	const products = await db.select().from(schema.products);
	const suppliers = await db.select().from(schema.suppliers);

	expect(customers.length).toBe(4);
	expect(details.length).toBe(24);
	expect(employees.length).toBe(11);
	expect(orders.length).toBe(8);
	expect(products.length).toBe(11);
	expect(suppliers.length).toBe(11);

	checkSoftRelations(customers, details, employees, orders, products, suppliers);
});