import { sql } from 'drizzle-orm';
import { check, integer, pgTable, serial, varchar } from 'drizzle-orm/pg-core';
import { JsonCreateTableStatement } from 'src/jsonStatements';
import { expect, test } from 'vitest';
import { diffTestSchemas } from './schemaDiffer';

test('create table with check', async (t) => {
	const to = {
		users: pgTable('users', {
			id: serial('id').primaryKey(),
			age: integer('age'),
		}, (table) => ({
			checkConstraint: check('some_check_name', sql`${table.age} > 21`),
		})),
	};

	const { sqlStatements, statements } = await diffTestSchemas({}, to, []);

	expect(statements.length).toBe(1);
	expect(statements[0]).toStrictEqual({
		type: 'create_table',
		tableName: 'users',
		schema: '',
		columns: [
			{
				name: 'id',
				type: 'serial',
				notNull: true,
				primaryKey: true,
			},
			{
				name: 'age',
				type: 'integer',
				notNull: false,
				primaryKey: false,
			},
		],
		compositePKs: [],
		checkConstraints: ['some_check_name;"users"."age" > 21'],
		compositePkName: '',
		uniqueConstraints: [],
		isRLSEnabled: false,
		policies: [],
	} as JsonCreateTableStatement);

	expect(sqlStatements.length).toBe(1);
	expect(sqlStatements[0]).toBe(`CREATE TABLE "users" (
\t"id" serial PRIMARY KEY NOT NULL,
\t"age" integer,
\tCONSTRAINT "some_check_name" CHECK ("users"."age" > 21)
);\n`);
});

test('add check contraint to existing table', async (t) => {
	const from = {
		users: pgTable('users', {
			id: serial('id').primaryKey(),
			age: integer('age'),
		}),
	};

	const to = {
		users: pgTable('users', {
			id: serial('id').primaryKey(),
			age: integer('age'),
		}, (table) => ({
			checkConstraint: check('some_check_name', sql`${table.age} > 21`),
		})),
	};

	const { sqlStatements, statements } = await diffTestSchemas(from, to, []);
	expect(statements.length).toBe(1);
	expect(statements[0]).toStrictEqual({
		type: 'create_check_constraint',
		tableName: 'users',
		schema: '',
		data: 'some_check_name;"users"."age" > 21',
	});

	expect(sqlStatements.length).toBe(1);
	expect(sqlStatements[0]).toBe(
		`ALTER TABLE "users" ADD CONSTRAINT "some_check_name" CHECK ("users"."age" > 21);`,
	);
});

test('drop check contraint in existing table', async (t) => {
	const from = {
		users: pgTable('users', {
			id: serial('id').primaryKey(),
			age: integer('age'),
		}, (table) => ({
			checkConstraint: check('some_check_name', sql`${table.age} > 21`),
		})),
	};

	const to = {
		users: pgTable('users', {
			id: serial('id').primaryKey(),
			age: integer('age'),
		}),
	};

	const { sqlStatements, statements } = await diffTestSchemas(from, to, []);
	expect(statements.length).toBe(1);
	expect(statements[0]).toStrictEqual({
		type: 'delete_check_constraint',
		tableName: 'users',
		schema: '',
		constraintName: 'some_check_name',
	});

	expect(sqlStatements.length).toBe(1);
	expect(sqlStatements[0]).toBe(
		`ALTER TABLE "users" DROP CONSTRAINT "some_check_name";`,
	);
});

test('rename check constraint', async (t) => {
	const from = {
		users: pgTable('users', {
			id: serial('id').primaryKey(),
			age: integer('age'),
		}, (table) => ({
			checkConstraint: check('some_check_name', sql`${table.age} > 21`),
		})),
	};

	const to = {
		users: pgTable('users', {
			id: serial('id').primaryKey(),
			age: integer('age'),
		}, (table) => ({
			checkConstraint: check('new_check_name', sql`${table.age} > 21`),
		})),
	};

	const { sqlStatements, statements } = await diffTestSchemas(from, to, []);
	expect(statements.length).toBe(2);
	expect(statements[0]).toStrictEqual({
		constraintName: 'some_check_name',
		schema: '',
		tableName: 'users',
		type: 'delete_check_constraint',
	});
	expect(statements[1]).toStrictEqual({
		data: 'new_check_name;"users"."age" > 21',
		schema: '',
		tableName: 'users',
		type: 'create_check_constraint',
	});

	expect(sqlStatements.length).toBe(2);
	expect(sqlStatements[0]).toBe(
		`ALTER TABLE "users" DROP CONSTRAINT "some_check_name";`,
	);
	expect(sqlStatements[1]).toBe(
		`ALTER TABLE "users" ADD CONSTRAINT "new_check_name" CHECK ("users"."age" > 21);`,
	);
});

test('alter check constraint', async (t) => {
	const from = {
		users: pgTable('users', {
			id: serial('id').primaryKey(),
			age: integer('age'),
		}, (table) => ({
			checkConstraint: check('some_check_name', sql`${table.age} > 21`),
		})),
	};

	const to = {
		users: pgTable('users', {
			id: serial('id').primaryKey(),
			age: integer('age'),
		}, (table) => ({
			checkConstraint: check('new_check_name', sql`${table.age} > 10`),
		})),
	};

	const { sqlStatements, statements } = await diffTestSchemas(from, to, []);
	expect(statements.length).toBe(2);
	expect(statements[0]).toStrictEqual({
		constraintName: 'some_check_name',
		schema: '',
		tableName: 'users',
		type: 'delete_check_constraint',
	});
	expect(statements[1]).toStrictEqual({
		data: 'new_check_name;"users"."age" > 10',
		schema: '',
		tableName: 'users',
		type: 'create_check_constraint',
	});

	expect(sqlStatements.length).toBe(2);
	expect(sqlStatements[0]).toBe(
		`ALTER TABLE "users" DROP CONSTRAINT "some_check_name";`,
	);
	expect(sqlStatements[1]).toBe(
		`ALTER TABLE "users" ADD CONSTRAINT "new_check_name" CHECK ("users"."age" > 10);`,
	);
});

test('alter multiple check constraints', async (t) => {
	const from = {
		users: pgTable('users', {
			id: serial('id').primaryKey(),
			age: integer('age'),
			name: varchar('name'),
		}, (table) => ({
			checkConstraint1: check('some_check_name_1', sql`${table.age} > 21`),
			checkConstraint2: check('some_check_name_2', sql`${table.name} != 'Alex'`),
		})),
	};

	const to = {
		users: pgTable('users', {
			id: serial('id').primaryKey(),
			age: integer('age'),
			name: varchar('name'),
		}, (table) => ({
			checkConstraint1: check('some_check_name_3', sql`${table.age} > 21`),
			checkConstraint2: check('some_check_name_4', sql`${table.name} != 'Alex'`),
		})),
	};

	const { sqlStatements, statements } = await diffTestSchemas(from, to, []);
	expect(statements.length).toBe(4);
	expect(statements[0]).toStrictEqual({
		constraintName: 'some_check_name_1',
		schema: '',
		tableName: 'users',
		type: 'delete_check_constraint',
	});
	expect(statements[1]).toStrictEqual({
		constraintName: 'some_check_name_2',
		schema: '',
		tableName: 'users',
		type: 'delete_check_constraint',
	});
	expect(statements[2]).toStrictEqual({
		data: 'some_check_name_3;"users"."age" > 21',
		schema: '',
		tableName: 'users',
		type: 'create_check_constraint',
	});
	expect(statements[3]).toStrictEqual({
		data: 'some_check_name_4;"users"."name" != \'Alex\'',
		schema: '',
		tableName: 'users',
		type: 'create_check_constraint',
	});

	expect(sqlStatements.length).toBe(4);
	expect(sqlStatements[0]).toBe(
		`ALTER TABLE "users" DROP CONSTRAINT "some_check_name_1";`,
	);
	expect(sqlStatements[1]).toBe(
		`ALTER TABLE "users" DROP CONSTRAINT "some_check_name_2";`,
	);
	expect(sqlStatements[2]).toBe(
		`ALTER TABLE "users" ADD CONSTRAINT "some_check_name_3" CHECK ("users"."age" > 21);`,
	);
	expect(sqlStatements[3]).toBe(
		`ALTER TABLE "users" ADD CONSTRAINT "some_check_name_4" CHECK ("users"."name" != \'Alex\');`,
	);
});

test('create checks with same names', async (t) => {
	const to = {
		users: pgTable('users', {
			id: serial('id').primaryKey(),
			age: integer('age'),
			name: varchar('name'),
		}, (table) => ({
			checkConstraint1: check('some_check_name', sql`${table.age} > 21`),
			checkConstraint2: check('some_check_name', sql`${table.name} != 'Alex'`),
		})),
	};

	await expect(diffTestSchemas({}, to, [])).rejects.toThrowError();
});