////////////////////////////////////////////////////////////////////////////
//
// Copyright 2016 Realm Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
////////////////////////////////////////////////////////////////////////////
'use strict';

import {
    AppRegistry,
    StyleSheet,
    Image,
    Text,
    View,
} from 'react-native';

import builder from 'xmlbuilder';
import React from 'react';
import RNFS from 'react-native-fs';
import { getTestNames, runTest } from './tests';

async function runTests() {
    let testNames = getTestNames();
    let rootXml = builder.create('testsuites');
    let failingTests = [];
    for (let suiteName in testNames) {
        let itemTestsuite = rootXml.ele('testsuite');
        let nbrTests = 0;
        let nbrFailures = 0;

        console.error('Starting ' + suiteName);

        for (let testName of testNames[suiteName]) {
            nbrTests++;

            let itemTest = itemTestsuite.ele('testcase');
            itemTest.att('name', testName);

            try {
                await runTest(suiteName, testName);
            }
            catch (e) {
                failingTests.push(`${suiteName}: ${testName} : Error ${e.message}`);
                itemTest.ele('error', {'message': e.message, 'stacktrace': e.stack}, e.toString());
                nbrFailures++;
            }
        }

        // update Junit XML report
        itemTestsuite.att('name', suiteName);
        itemTestsuite.att('tests', nbrTests);
        itemTestsuite.att('failures', nbrFailures);
        itemTestsuite.att('timestamp', "2016-01-22T14:40:44.874443-05:00");//TODO use real timestamp

    }
    // export unit tests results
    let xmlString = rootXml.end({
        pretty: true,
        indent: '  ',
        newline: '\n',
    });

    // write the unit tests reports
    try {
        await RNFS.writeFile('/sdcard/tests.xml', xmlString, 'utf8');
        console.log('__REALM_JS_TESTS_COMPLETED__');
        if (failingTests.length !== 0) {
            console.error('\n\nREALM_FAILING_TESTS\n');
            console.error(failingTests);
        } 
    }
    catch (e) {
        console.error(e);
    }
    finally {
        console.warn("Realm Tests App finished. Exiting. Disable this to debug the app locally");
        RNExitApp.exitApp();
    }
}

class ReactTests extends React.Component {
    render() {
        runTests();
        return (
            <View style={styles.container}>
                <Text style={styles.button} onPress={runTests}>
                    Click To Run Tests Again.
                </Text>
            </View>
        );
    }
}

const styles = StyleSheet.create({
    container: {
        flex: 1,
        justifyContent: 'center',
        alignItems: 'center',
        backgroundColor: '#F5FCFF',
    },
    welcome: {
        fontSize: 20,
        textAlign: 'center',
        margin: 10,
    },
    instructions: {
        textAlign: 'center',
        color: '#333333',
        marginBottom: 5,
    },
});

AppRegistry.registerComponent('ReactTests', () => ReactTests);