var appSettings = require('@nativescript/core/application-settings');
import * as TKUnit from '../tk-unit';

var stringKey: string = 'stringKey';
var boolKey: string = 'boolKey';
var numberKey: string = 'numberKey';
var noStringKey: string = 'noStringKey';
var noBoolKey: string = 'noBoolKey';
var noNumberKey: string = 'noNumberKey';

export var testBoolean = function () {
	appSettings.setBoolean(boolKey, false);
	var boolValueBefore = appSettings.getBoolean(boolKey);
	TKUnit.assert(false === boolValueBefore, 'Cannot set boolean to false, currently it is: ' + appSettings.getBoolean(boolKey));

	appSettings.setBoolean('boolKey', true);
	var boolValue = appSettings.getBoolean('boolKey', false);

	TKUnit.assert(true === boolValue, 'Cannot set boolean to true');

	TKUnit.assert(true === appSettings.getBoolean(boolKey), 'Cannot set boolean to true (no default)');
};

export var testString = function () {
	appSettings.setString('stringKey', 'String value');
	var stringValue = appSettings.getString('stringKey');

	TKUnit.assert('String value' === stringValue, 'Cannot set string value');
};

export var testNumber = function () {
	appSettings.setNumber('numberKey', 54.321);
	var value = parseFloat(appSettings.getNumber('numberKey').toFixed(3));

	TKUnit.assert(54.321 === value, 'Cannot set number value 54.321 != ' + value);
};

export var testDefaults = function () {
	var defaultValue = appSettings.getString('noStringKey', 'No string value');
	// will return "No string value" if there is no value for "noStringKey"

	TKUnit.assert('No string value' === defaultValue, 'Bad default string value');
	TKUnit.assert(true === appSettings.getBoolean(noBoolKey, true), 'Bad default boolean value');
	TKUnit.assert(123.45 === appSettings.getNumber(noNumberKey, 123.45), 'Bad default number value');
};

export var testDefaultsWithNoDefaultValueProvided = function () {
	var defaultValue = appSettings.getString('noStringKey');
	// will return undefined if there is no value for "noStringKey"

	TKUnit.assertEqual(defaultValue, undefined, 'Default string value is not undefined');

	TKUnit.assertEqual(appSettings.getBoolean(noBoolKey), undefined, 'Default boolean value is not undefined');
	TKUnit.assertEqual(appSettings.getNumber(noNumberKey), undefined, 'Default number value is not undefined');
};

export var testHasKey = function () {
	var hasKey = appSettings.hasKey('noBoolKey');
	// will return false if there is no value for "noBoolKey"

	TKUnit.assert(!hasKey, 'There is a key: ' + noBoolKey);
	TKUnit.assert(!appSettings.hasKey(noStringKey), 'There is a key: ' + noStringKey);
	TKUnit.assert(!appSettings.hasKey(noNumberKey), 'There is a key: ' + noNumberKey);

	TKUnit.assert(appSettings.hasKey(boolKey), 'There is no key: ' + boolKey);
	TKUnit.assert(appSettings.hasKey(stringKey), 'There is no key: ' + stringKey);
	TKUnit.assert(appSettings.hasKey(numberKey), 'There is no key: ' + numberKey);
};

export var testRemove = function () {
	appSettings.remove('boolKey');

	TKUnit.assert(!appSettings.hasKey(boolKey), 'Failed to remove key: ' + boolKey);

	appSettings.remove(stringKey);
	TKUnit.assert(!appSettings.hasKey(stringKey), 'Failed to remove key: ' + stringKey);

	appSettings.remove(numberKey);
	TKUnit.assert(!appSettings.hasKey(numberKey), 'Failed to remove key: ' + numberKey);
};

export var testClear = function () {
	appSettings.clear();

	TKUnit.assert(!appSettings.hasKey(boolKey), 'Failed to remove key: ' + boolKey);
	TKUnit.assert(!appSettings.hasKey(stringKey), 'Failed to remove key: ' + stringKey);
	TKUnit.assert(!appSettings.hasKey(numberKey), 'Failed to remove key: ' + numberKey);
};

export var testFlush = function () {
	appSettings.setString(stringKey, 'String value');

	var flushed = appSettings.flush();
	// will return boolean indicating whether flush to disk was successful

	TKUnit.assert(flushed, 'Flush failed: ' + flushed);
	TKUnit.assert(appSettings.hasKey(stringKey), 'There is no key: ' + stringKey);
};

export var testAllKeys = function () {
	appSettings.setString(stringKey, 'String value');
	appSettings.setBoolean(boolKey, true);
	appSettings.setNumber(numberKey, 22);

	var allKeys = appSettings.getAllKeys();
	TKUnit.assert(allKeys.indexOf(stringKey) !== -1, `${stringKey} is missing from .allKeys()`);
	TKUnit.assert(allKeys.indexOf(boolKey) !== -1, `${boolKey} is missing from .allKeys()`);
	TKUnit.assert(allKeys.indexOf(numberKey) !== -1, `${numberKey} is missing from .allKeys()`);
};

export var testInvalidKey = function () {
	try {
		appSettings.hasKey(undefined);
		TKUnit.assert(false, 'There is a key undefined');
	} catch (e) {
		// we should receive an exception here
	}

	try {
		appSettings.hasKey(null);
		TKUnit.assert(false, 'There is a key null');
	} catch (e) {
		// we should receive an exception here
	}

	try {
		appSettings.hasKey(123);
		TKUnit.assert(false, 'There is a key number');
	} catch (e) {
		// we should receive an exception here
	}

	appSettings.hasKey('string');
};

export var testInvalidValue = function () {
	try {
		appSettings.setBoolean(boolKey, 'str');
		TKUnit.assert(false, 'There is a key undefined');
	} catch (e) {
		// we should receive an exception here
	}

	try {
		appSettings.setBoolean(boolKey, 123);
		TKUnit.assert(false, 'There is a key undefined');
	} catch (e) {
		// we should receive an exception here
	}

	try {
		appSettings.setString(boolKey, true);
		TKUnit.assert(false, 'There is a key undefined');
	} catch (e) {
		// we should receive an exception here
	}

	try {
		appSettings.setString(boolKey, 123);
		TKUnit.assert(false, 'There is a key undefined');
	} catch (e) {
		// we should receive an exception here
	}

	try {
		appSettings.setNumber(boolKey, true);
		TKUnit.assert(false, 'There is a key undefined');
	} catch (e) {
		// we should receive an exception here
	}

	try {
		appSettings.setNumber(boolKey, '123');
		TKUnit.assert(false, 'There is a key undefined');
	} catch (e) {
		// we should receive an exception here
	}
};