/**
    Licensed to the Apache Software Foundation (ASF) under one
    or more contributor license agreements.  See the NOTICE file
    distributed with this work for additional information
    regarding copyright ownership.  The ASF licenses this file
    to you 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.
*/

const fs = require('fs-extra');

var path = require('path');

var requireFresh = require('import-fresh');

var create = require('..');
var events = require('cordova-common').events;
var CordovaError = require('cordova-common').CordovaError;
var ConfigParser = require('cordova-common').ConfigParser;
const { tmpDir, createWith, createWithMockFetch, expectRejection } = require('./helpers');

const appName = 'TestBase';
const appId = 'org.testing';
const appVersion = '1.0.0';
const project = path.join(tmpDir, appName);

// Setup and teardown test dirs
beforeEach(function () {
    fs.emptyDirSync(tmpDir);
});
afterAll(function () {
    process.chdir(path.join(__dirname, '..')); // Needed to rm the dir on Windows.
    fs.removeSync(tmpDir);
});

describe('cordova create checks for valid-identifier', function () {
    const error = new CordovaError('is not a valid identifier');

    it('should reject reserved words from start of id', function () {
        return expectRejection(create(project, 'int.bob', appName, {}, events), error);
    });

    it('should reject reserved words from end of id', function () {
        return expectRejection(create(project, 'bob.class', appName, {}, events), error);
    });
});

describe('create end-to-end', function () {

    function checkCommonArtifacts () {
        // Check that top level dirs exist
        var dirs = ['hooks', 'platforms', 'plugins', 'www'];
        dirs.forEach(function (d) {
            expect(path.join(project, d)).toExist();
        });

        // Check that README.md exists inside of hooks
        expect(path.join(project, 'hooks', 'README.md')).toExist();

        // Check that index.html exists inside of www
        expect(path.join(project, 'www', 'index.html')).toExist();

        // Check that www files don't get copied to the top level
        expect(path.join(project, 'index.html')).not.toExist();

        // index.js and template subdir folder should not exist in top level
        // (inner files should be copied to the project top level folder)
        expect(path.join(project, 'index.js')).not.toExist();
        expect(path.join(project, 'template')).not.toExist();

        // Check that config.xml does not exist inside of www
        expect(path.join(project, 'www', 'config.xml')).not.toExist();

        // Check that config.xml was updated correctly
        var configXml = new ConfigParser(path.join(project, 'config.xml'));
        expect(configXml.packageName()).toEqual(appId);
        expect(configXml.name()).toEqual(appName);
        expect(configXml.version()).toEqual(appVersion);
    }

    // Check that we got package.json and it was updated correctly
    function checkPackageJson () {
        const pkg = requireFresh(path.join(project, 'package.json'));
        expect(pkg.name).toEqual(appId);
        expect(pkg.displayName).toEqual(appName);
        expect(pkg.version).toEqual(appVersion);
    }

    // Check that we got no package.json
    function checkNoPackageJson () {
        expect(path.join(project, 'package.json')).not.toExist();
    }

    // Check that we did use the default template
    function checkDefaultTemplate () {
        const pkg = requireFresh(path.join(project, 'package.json'));
        expect(pkg.author).toEqual('Apache Cordova Team');

        const configXml = new ConfigParser(path.join(project, 'config.xml'));
        expect(configXml.author()).toEqual('Apache Cordova Team');
    }

    // Check that we did not use the default template
    function checkNotDefaultTemplate () {
        const configXml = new ConfigParser(path.join(project, 'config.xml'));
        expect(configXml.author()).not.toEqual('Apache Cordova Team');
    }

    function checkProjectCreatedWithFixtureTemplate () {
        checkCommonArtifacts();
        checkNoPackageJson();
        checkNotDefaultTemplate();
    }

    function checkProjectCreatedWithDefaultTemplate () {
        checkCommonArtifacts();
        checkPackageJson();
        checkDefaultTemplate();
    }

    it('should successfully run without template and use default hello-world app', function () {
        // Create a real project with no template
        // use default cordova-app-hello-world app
        return create(project, appId, appName, {}, events)
            .then(checkProjectCreatedWithDefaultTemplate);
    });

    it('should successfully run with Git URL', function () {
        // Create a real project with git URL as template
        var config = {
            lib: {
                www: {
                    url: 'https://github.com/apache/cordova-app-hello-world',
                    template: true
                }
            }
        };
        return createWithMockFetch(project, appId, appName, config, events)
            .then(fetchSpy => {
                expect(fetchSpy).toHaveBeenCalledTimes(1);
                expect(fetchSpy.calls.argsFor(0)[0]).toBe(config.lib.www.url);
            })
            .then(checkProjectCreatedWithDefaultTemplate);
    });

    it('should successfully run with NPM package (specific version)', function () {
        // Create a real project with npm module as template
        var config = {
            lib: {
                www: {
                    template: true,
                    url: 'phonegap-template-vue-f7-tabs@1'
                }
            }
        };
        return createWithMockFetch(project, appId, appName, config, events)
            .then(fetchSpy => {
                expect(fetchSpy).toHaveBeenCalledTimes(1);
                expect(fetchSpy.calls.argsFor(0)[0]).toBe(config.lib.www.url);
            })
            .then(checkProjectCreatedWithDefaultTemplate);
    });

    it('should successfully run with NPM package (no specific version)', function () {
        // Create a real project with npm module as template
        var config = {
            lib: {
                www: {
                    template: true,
                    url: 'phonegap-template-vue-f7-tabs'
                }
            }
        };
        return createWithMockFetch(project, appId, appName, config, events)
            .then(fetchSpy => {
                expect(fetchSpy).toHaveBeenCalledTimes(1);
                expect(fetchSpy.calls.argsFor(0)[0]).toBe(config.lib.www.url);
            })
            .then(checkProjectCreatedWithDefaultTemplate);
    });

    it('should successfully run with template not having a package.json at toplevel', function () {
        var config = {
            lib: {
                www: {
                    template: true,
                    url: path.join(__dirname, 'templates', 'nopackage_json')
                }
            }
        };
        return create(project, appId, appName, config, events)
            .then(checkProjectCreatedWithFixtureTemplate);
    });

    it('should successfully run with template having package.json and no sub directory', function () {
        var config = {
            lib: {
                www: {
                    template: true,
                    url: path.join(__dirname, 'templates', 'withpackage_json')
                }
            }
        };
        return create(project, appId, appName, config, events)
            .then(checkProjectCreatedWithFixtureTemplate);
    });

    it('should successfully run with template having package.json, and subdirectory, and no package.json in subdirectory', function () {
        var config = {
            lib: {
                www: {
                    template: true,
                    url: path.join(__dirname, 'templates', 'withsubdirectory')
                }
            }
        };
        return create(project, appId, appName, config, events)
            .then(checkProjectCreatedWithFixtureTemplate);
    });

    it('should successfully run with template having package.json, and subdirectory, and package.json in subdirectory', function () {
        var config = {
            lib: {
                www: {
                    template: true,
                    url: path.join(__dirname, 'templates', 'withsubdirectory_package_json')
                }
            }
        };
        return create(project, appId, appName, config, events)
            .then(checkCommonArtifacts)
            .then(checkPackageJson)
            .then(checkNotDefaultTemplate);
    });

    it('should successfully run config.xml in the www folder and move it outside', function () {
        var config = {
            lib: {
                www: {
                    template: true,
                    url: path.join(__dirname, 'templates', 'config_in_www')
                }
            }
        };
        return create(project, appId, appName, config, events)
            .then(checkProjectCreatedWithFixtureTemplate);
    });

    it('should successfully run with www folder as the template', function () {
        var config = {
            lib: {
                www: {
                    template: true,
                    url: path.join(__dirname, 'templates', 'config_in_www', 'www')
                }
            }
        };
        return create(project, appId, appName, config, events)
            .then(checkProjectCreatedWithFixtureTemplate);
    });

    it('should successfully run with existing, empty destination', function () {
        fs.ensureDirSync(project);
        return create(project, appId, appName, {}, events)
            .then(checkProjectCreatedWithDefaultTemplate);
    });

    describe('when --link-to is provided', function () {
        function allowSymlinkErrorOnWindows (err) {
            const onWindows = process.platform.slice(0, 3) === 'win';
            const isSymlinkError = err && String(err.message).startsWith('Symlinks on Windows');
            if (onWindows && isSymlinkError) {
                pending(err.message);
            } else {
                throw err;
            }
        }

        it('when passed www folder should not move www/config.xml, only copy and update', function () {
            function checkSymWWW () {
                // Check if top level dirs exist.
                var dirs = ['hooks', 'platforms', 'plugins', 'www'];
                dirs.forEach(function (d) {
                    expect(path.join(project, d)).toExist();
                });
                expect(path.join(project, 'hooks', 'README.md')).toExist();

                // Check if www files exist.
                expect(path.join(project, 'www', 'index.html')).toExist();

                // Check www/config exists
                expect(path.join(project, 'www', 'config.xml')).toExist();
                // Check www/config.xml was not updated.
                var configXml = new ConfigParser(path.join(project, 'www', 'config.xml'));
                expect(configXml.packageName()).toEqual('io.cordova.hellocordova');
                expect(configXml.version()).toEqual('0.0.1');
                expect(configXml.description()).toEqual('this is the correct config.xml');

                // Check that config.xml was copied to project/config.xml
                expect(path.join(project, 'config.xml')).toExist();
                configXml = new ConfigParser(path.join(project, 'config.xml'));
                expect(configXml.description()).toEqual('this is the correct config.xml');
                // Check project/config.xml was updated.
                expect(configXml.packageName()).toEqual(appId);
                expect(configXml.version()).toEqual('1.0.0');

                // Check that we got no package.json
                expect(path.join(project, 'package.json')).not.toExist();

                // Check that www is really a symlink,
                // and project/config.xml , hooks and merges are not
                expect(fs.lstatSync(path.join(project, 'www')).isSymbolicLink()).toBe(true);
                expect(fs.lstatSync(path.join(project, 'hooks')).isSymbolicLink()).not.toBe(true);
                expect(fs.lstatSync(path.join(project, 'config.xml')).isSymbolicLink()).not.toBe(true);
            }
            var config = {
                lib: {
                    www: {
                        template: true,
                        url: path.join(__dirname, 'templates', 'config_in_www', 'www'),
                        link: true
                    }
                }
            };
            return create(project, appId, appName, config, events)
                .then(checkSymWWW)
                .catch(allowSymlinkErrorOnWindows);
        });

        it('with subdirectory should not update symlinked project/config.xml', function () {
            function checkSymSubDir () {
                // Check if top level dirs exist.
                var dirs = ['hooks', 'platforms', 'plugins', 'www'];
                dirs.forEach(function (d) {
                    expect(path.join(project, d)).toExist();
                });
                expect(path.join(project, 'hooks', 'README.md')).toExist();

                // index.js and template subdir folder should not exist (inner files should be copied to the project folder)
                expect(path.join(project, 'index.js')).not.toExist();
                expect(path.join(project, 'template')).not.toExist();

                // Check if www files exist.
                expect(path.join(project, 'www', 'index.html')).toExist();

                // Check that www, and config.xml is really a symlink
                expect(fs.lstatSync(path.join(project, 'www')).isSymbolicLink()).toBe(true);
                expect(fs.lstatSync(path.join(project, 'config.xml')).isSymbolicLink()).toBe(true);

                // Check that config.xml was not updated. (symlinked config does not get updated!)
                var configXml = new ConfigParser(path.join(project, 'config.xml'));
                expect(configXml.packageName()).toEqual('io.cordova.hellocordova');
                expect(configXml.version()).toEqual('0.0.1');

                // Check that we got the right config.xml
                expect(configXml.description()).toEqual('this is the correct config.xml');

                // Check that we got package.json (the correct one) and it was changed
                var pkjson = requireFresh(path.join(project, 'package.json'));
                // Pkjson.name should equal config's id.
                expect(pkjson.name).toEqual(appId.toLowerCase());
                expect(pkjson.valid).toEqual('true');
            }
            var config = {
                lib: {
                    www: {
                        template: true,
                        url: path.join(__dirname, 'templates', 'withsubdirectory_package_json'),
                        link: true
                    }
                }
            };
            return create(project, appId, appName, config, events)
                .then(checkSymSubDir)
                .catch(allowSymlinkErrorOnWindows);
        });

        it('with no config should create one and update it', function () {
            function checkSymNoConfig () {
                // Check if top level dirs exist.
                var dirs = ['hooks', 'platforms', 'plugins', 'www'];
                dirs.forEach(function (d) {
                    expect(path.join(project, d)).toExist();
                });
                expect(path.join(project, 'hooks', 'hooks.file')).toExist();
                expect(path.join(project, 'merges', 'merges.file')).toExist();

                // Check if www files exist.
                expect(path.join(project, 'www', 'index.html')).toExist();

                // Check that config.xml was updated.
                var configXml = new ConfigParser(path.join(project, 'config.xml'));
                expect(configXml.packageName()).toEqual(appId);

                // Check that www, hooks, merges are really a symlink; config is not
                expect(fs.lstatSync(path.join(project, 'www')).isSymbolicLink()).toBe(true);
                expect(fs.lstatSync(path.join(project, 'hooks')).isSymbolicLink()).toBe(true);
                expect(fs.lstatSync(path.join(project, 'merges')).isSymbolicLink()).toBe(true);
                expect(fs.lstatSync(path.join(project, 'config.xml')).isSymbolicLink()).not.toBe(true);
            }

            var config = {
                lib: {
                    www: {
                        template: true,
                        url: path.join(__dirname, 'templates', 'noconfig'),
                        link: true
                    }
                }
            };
            return create(project, appId, appName, config, events)
                .then(checkSymNoConfig)
                .catch(allowSymlinkErrorOnWindows);
        });

    });
});

describe('when shit happens', function () {
    it('should fail when dir is missing', function () {
        return expectRejection(
            create(null, appId, appName, {}, events),
            new CordovaError('Directory not specified')
        );
    });

    it('should fail when dir already exists', function () {
        return expectRejection(
            create(__dirname, appId, appName, {}, events),
            new CordovaError('Path already exists and is not empty')
        );
    });

    it('should fail when destination is inside template', function () {
        const config = {
            lib: {
                www: {
                    url: path.join(tmpDir, 'template')
                }
            }
        };
        const destination = path.join(config.lib.www.url, 'destination');
        return expectRejection(
            create(destination, appId, appName, config, events),
            new CordovaError('inside the template')
        );
    });

    it('should fail when fetch fails', function () {
        const config = {
            lib: {
                www: {
                    template: true,
                    url: 'http://localhost:123456789/cordova-create'
                }
            }
        };
        const fetchError = new Error('Fetch fail');
        const failingFetch = jasmine.createSpy('failingFetch')
            .and.callFake(() => Promise.reject(fetchError));
        return expectRejection(
            createWith({ fetch: failingFetch })(project, appId, appName, config),
            fetchError
        );

    });

    it('should fail when template does not exist', function () {
        const config = {
            lib: {
                www: {
                    url: path.join(__dirname, 'doesnotexist')
                }
            }
        };
        return expectRejection(
            create(project, appId, appName, config, events),
            new CordovaError('Could not find directory')
        );
    });
});