////////////////////////////////////////////////////////////////////////////
//
// 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.
//
////////////////////////////////////////////////////////////////////////////

/* eslint-env es6, node */
/* eslint-disable no-console */

'use strict';

const fs = require('fs');
const path = require('path');
const mockery = require('mockery');

function runTests() {
    const Realm = require('realm');
    const RealmTests = require('./js');

    RealmTests.registerTests({
        WorkerTests: require('./js/worker-tests'),
    });

    const testNames = RealmTests.getTestNames();
    let passed = true;

    // Create this method with appropriate implementation for Node testing.
    Realm.copyBundledRealmFiles = function() {
        let sourceDir = path.join(__dirname, 'data');
        let destinationDir = path.dirname(Realm.defaultPath);

        for (let filename of fs.readdirSync(sourceDir)) {
            let src = path.join(sourceDir, filename);
            let dest = path.join(destinationDir, filename);

            // If the destination file already exists, then don't overwrite it.
            try {
                fs.accessSync(dest);
                continue;
            } catch (e) {}

            fs.writeFileSync(dest, fs.readFileSync(src));
        }
    };

    return Object.keys(testNames).reduce((suitePromiseChain, suiteName) => {
        return suitePromiseChain.then(() => {
            console.log('Starting ' + suiteName);

            return testNames[suiteName].reduce((testPromiseChain, testName) => {
                return testPromiseChain.then(() => {
                    return RealmTests.runTest(suiteName, 'beforeEach');
                }).then(() => {
                    return RealmTests.runTest(suiteName, testName);
                }).then(() => {
                    console.log('+ ' + testName);
                }, (err) => {
                    console.warn('- ' + testName);
                    console.warn(err.message || err);
                    passed = false;
                }).then(() => {
                    return RealmTests.runTest(suiteName, 'afterEach');
                });
            }, Promise.resolve());
        });
    }, Promise.resolve()).then(() => passed);
}

if (require.main == module) {
    mockery.enable();
    mockery.warnOnUnregistered(false);
    mockery.registerMock('realm', require('..'));

    runTests().then(
        (passed) => {
            if (!passed) {
                process.exit(1);
            }
        },
        (err) => {
            console.error(err);
            process.exit(1);
        }
    );
}