/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the Source EULA. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/

import * as assert from 'assert';
import { StandardTokenType } from 'vs/editor/common/encodedTokenAttributes';
import { CharacterPairSupport } from 'vs/editor/common/languages/supports/characterPair';
import { TokenText, createFakeScopedLineTokens } from 'vs/editor/test/common/modesTestUtils';
import { StandardAutoClosingPairConditional } from 'vs/editor/common/languages/languageConfiguration';

suite('CharacterPairSupport', () => {

	test('only autoClosingPairs', () => {
		const characaterPairSupport = new CharacterPairSupport({ autoClosingPairs: [{ open: 'a', close: 'b' }] });
		assert.deepStrictEqual(characaterPairSupport.getAutoClosingPairs(), [new StandardAutoClosingPairConditional({ open: 'a', close: 'b' })]);
		assert.deepStrictEqual(characaterPairSupport.getSurroundingPairs(), [new StandardAutoClosingPairConditional({ open: 'a', close: 'b' })]);
	});

	test('only empty autoClosingPairs', () => {
		const characaterPairSupport = new CharacterPairSupport({ autoClosingPairs: [] });
		assert.deepStrictEqual(characaterPairSupport.getAutoClosingPairs(), []);
		assert.deepStrictEqual(characaterPairSupport.getSurroundingPairs(), []);
	});

	test('only brackets', () => {
		const characaterPairSupport = new CharacterPairSupport({ brackets: [['a', 'b']] });
		assert.deepStrictEqual(characaterPairSupport.getAutoClosingPairs(), [new StandardAutoClosingPairConditional({ open: 'a', close: 'b' })]);
		assert.deepStrictEqual(characaterPairSupport.getSurroundingPairs(), [new StandardAutoClosingPairConditional({ open: 'a', close: 'b' })]);
	});

	test('only empty brackets', () => {
		const characaterPairSupport = new CharacterPairSupport({ brackets: [] });
		assert.deepStrictEqual(characaterPairSupport.getAutoClosingPairs(), []);
		assert.deepStrictEqual(characaterPairSupport.getSurroundingPairs(), []);
	});

	test('only surroundingPairs', () => {
		const characaterPairSupport = new CharacterPairSupport({ surroundingPairs: [{ open: 'a', close: 'b' }] });
		assert.deepStrictEqual(characaterPairSupport.getAutoClosingPairs(), []);
		assert.deepStrictEqual(characaterPairSupport.getSurroundingPairs(), [{ open: 'a', close: 'b' }]);
	});

	test('only empty surroundingPairs', () => {
		const characaterPairSupport = new CharacterPairSupport({ surroundingPairs: [] });
		assert.deepStrictEqual(characaterPairSupport.getAutoClosingPairs(), []);
		assert.deepStrictEqual(characaterPairSupport.getSurroundingPairs(), []);
	});

	test('brackets is ignored when having autoClosingPairs', () => {
		const characaterPairSupport = new CharacterPairSupport({ autoClosingPairs: [], brackets: [['a', 'b']] });
		assert.deepStrictEqual(characaterPairSupport.getAutoClosingPairs(), []);
		assert.deepStrictEqual(characaterPairSupport.getSurroundingPairs(), []);
	});

	function testShouldAutoClose(characterPairSupport: CharacterPairSupport, line: TokenText[], column: number): boolean {
		const autoClosingPair = characterPairSupport.getAutoClosingPairs()[0];
		return autoClosingPair.shouldAutoClose(createFakeScopedLineTokens(line), column);
	}

	test('shouldAutoClosePair in empty line', () => {
		const sup = new CharacterPairSupport({ autoClosingPairs: [{ open: '{', close: '}', notIn: ['string', 'comment'] }] });
		const tokenText: TokenText[] = [];
		assert.strictEqual(testShouldAutoClose(sup, tokenText, 1), true);
	});

	test('shouldAutoClosePair in not interesting line 1', () => {
		const sup = new CharacterPairSupport({ autoClosingPairs: [{ open: '{', close: '}', notIn: ['string', 'comment'] }] });
		const tokenText: TokenText[] = [
			{ text: 'do', type: StandardTokenType.Other }
		];
		assert.strictEqual(testShouldAutoClose(sup, tokenText, 3), true);
	});

	test('shouldAutoClosePair in not interesting line 2', () => {
		const sup = new CharacterPairSupport({ autoClosingPairs: [{ open: '{', close: '}' }] });
		const tokenText: TokenText[] = [
			{ text: 'do', type: StandardTokenType.String }
		];
		assert.strictEqual(testShouldAutoClose(sup, tokenText, 3), true);
	});

	test('shouldAutoClosePair in interesting line 1', () => {
		const sup = new CharacterPairSupport({ autoClosingPairs: [{ open: '{', close: '}', notIn: ['string', 'comment'] }] });
		const tokenText: TokenText[] = [
			{ text: '"a"', type: StandardTokenType.String }
		];
		assert.strictEqual(testShouldAutoClose(sup, tokenText, 1), false);
		assert.strictEqual(testShouldAutoClose(sup, tokenText, 2), false);
		assert.strictEqual(testShouldAutoClose(sup, tokenText, 3), false);
		assert.strictEqual(testShouldAutoClose(sup, tokenText, 4), false);
	});

	test('shouldAutoClosePair in interesting line 2', () => {
		const sup = new CharacterPairSupport({ autoClosingPairs: [{ open: '{', close: '}', notIn: ['string', 'comment'] }] });
		const tokenText: TokenText[] = [
			{ text: 'x=', type: StandardTokenType.Other },
			{ text: '"a"', type: StandardTokenType.String },
			{ text: ';', type: StandardTokenType.Other }
		];
		assert.strictEqual(testShouldAutoClose(sup, tokenText, 1), true);
		assert.strictEqual(testShouldAutoClose(sup, tokenText, 2), true);
		assert.strictEqual(testShouldAutoClose(sup, tokenText, 3), true);
		assert.strictEqual(testShouldAutoClose(sup, tokenText, 4), false);
		assert.strictEqual(testShouldAutoClose(sup, tokenText, 5), false);
		assert.strictEqual(testShouldAutoClose(sup, tokenText, 6), false);
		assert.strictEqual(testShouldAutoClose(sup, tokenText, 7), true);
	});

	test('shouldAutoClosePair in interesting line 3', () => {
		const sup = new CharacterPairSupport({ autoClosingPairs: [{ open: '{', close: '}', notIn: ['string', 'comment'] }] });
		const tokenText: TokenText[] = [
			{ text: ' ', type: StandardTokenType.Other },
			{ text: '//a', type: StandardTokenType.Comment }
		];
		assert.strictEqual(testShouldAutoClose(sup, tokenText, 1), true);
		assert.strictEqual(testShouldAutoClose(sup, tokenText, 2), true);
		assert.strictEqual(testShouldAutoClose(sup, tokenText, 3), false);
		assert.strictEqual(testShouldAutoClose(sup, tokenText, 4), false);
		assert.strictEqual(testShouldAutoClose(sup, tokenText, 5), false);
	});

});
