import {describe, expect, it} from 'vitest';
import { convertToDataSourceQuery } from '../../src/backend';

describe('query', () => {
	it('returns a data source query collection from search params', () => {
		const q = new URLSearchParams();
		const collection = convertToDataSourceQuery(q);
		expect(collection.expressions).toBeInstanceOf(Array);
	});

	it('coerces a numeric value', () => {
		const q = new URLSearchParams({
			attr: '2',
			attr2: '2',
		});
		const collection = convertToDataSourceQuery(
			q,
			{
				processEntries: {
					attr: {
						type: 'number'
					}
				},
			},
		);
		expect(collection).toEqual({
			type: 'and',
			expressions: [
				{
					type: 'or',
					expressions: [
						{
							lhs: 'attr',
							operator: '=',
							rhs: 2,
						},
					],
				},
				{
					type: 'or',
					expressions: [
						{
							lhs: 'attr2',
							operator: '=',
							rhs: '2',
						},
					],
				},
			],
		});
	});

	it('coerces a boolean value', () => {
		const q = new URLSearchParams({
			attr: 'true',
			attr2: 'false',
			attr3: 'true',
			attr4: 'false',
		});
		const collection = convertToDataSourceQuery(
			q,
			{
				processEntries: {
					attr: {
						type: 'boolean',
					},
					attr2: {
						type: 'boolean',
					}
				},
			},
		);
		expect(collection).toEqual({
			type: 'and',
			expressions: [
				{
					type: 'or',
					expressions: [
						{
							lhs: 'attr',
							operator: '=',
							rhs: true,
						},
					],
				},
				{
					type: 'or',
					expressions: [
						{
							lhs: 'attr2',
							operator: '=',
							rhs: false,
						},
					],
				},
				{
					type: 'or',
					expressions: [
						{
							lhs: 'attr3',
							operator: '=',
							rhs: 'true',
						},
					],
				},
				{
					type: 'or',
					expressions: [
						{
							lhs: 'attr4',
							operator: '=',
							rhs: 'false',
						},
					],
				},
			],
		});
	});

	it('returns an equal query', () => {
		const q = new URLSearchParams({
			attr: 'foo'
		});
		const collection = convertToDataSourceQuery(q);
		expect(collection).toEqual({
			type: 'and',
			expressions: [
				{
					type: 'or',
					expressions: [
						{
							lhs: 'attr',
							operator: '=',
							rhs: 'foo',
						},
					],
				},
			],
		});
	});

	it('returns an AND operator query', () => {
		const q = new URLSearchParams([
			['attr', 'foo'],
			['attr2', 'bar'],
		]);
		const collection = convertToDataSourceQuery(q);
		expect(collection).toEqual({
			type: 'and',
			expressions: [
				{
					type: 'or',
					expressions: [
						{
							lhs: 'attr',
							operator: '=',
							rhs: 'foo',
						},
					],
				},
				{
					type: 'or',
					expressions: [
						{
							lhs: 'attr2',
							operator: '=',
							rhs: 'bar',
						},
					],
				},
			],
		});
	});

	it('returns an OR operator query', () => {
		const q = new URLSearchParams([
			['attr', 'foo'],
			['attr', 'bar'],
		]);
		const collection = convertToDataSourceQuery(q);
		expect(collection).toEqual({
			type: 'and',
			expressions: [
				{
					type: 'or',
					expressions: [
						{
							lhs: 'attr',
							operator: '=',
							rhs: 'foo',
						},
						{
							lhs: 'attr',
							operator: '=',
							rhs: 'bar',
						}
					]
				},
			],
		});
	});

	it('returns an query with appropriate grouping', () => {
		const q = new URLSearchParams([
			['attr3', 'quux'],
			['attr', 'foo'],
			['attr4', 'quuux'],
			['attr', 'bar'],
			['attr2', 'baz'],
		]);
		const collection = convertToDataSourceQuery(q);
		expect(collection).toEqual({
			type: 'and',
			expressions: [
				{
					type: 'or',
					expressions: [
						{
							lhs: 'attr3',
							operator: '=',
							rhs: 'quux',
						},
					],
				},
				{
					type: 'or',
					expressions: [
						{
							lhs: 'attr',
							operator: '=',
							rhs: 'foo',
						},
						{
							lhs: 'attr',
							operator: '=',
							rhs: 'bar',
						}
					]
				},
				{
					type: 'or',
					expressions: [
						{
							lhs: 'attr4',
							operator: '=',
							rhs: 'quuux',
						},
					],
				},
				{
					type: 'or',
					expressions: [
						{
							lhs: 'attr2',
							operator: '=',
							rhs: 'baz',
						},
					],
				},
			],
		});
	});
});