var expect = require('expect.js');
var md5 = require('md5-hex');
var helpers = require('../../helpers');

var cacheClean = helpers.command('cache/clean');
var object = require('mout/object');

describe('bower cache clean', function() {
    // Because directory names are required to be md5 of _source
    var cacheFilesFactory = function(spec) {
        var files = {};

        object.map(spec, function(bowerJson) {
            bowerJson._source = bowerJson.name + '/' + bowerJson.version;
            var path =
                md5(bowerJson._source) +
                '/' +
                bowerJson.version +
                '/.bower.json';
            files[path] = bowerJson;
        });

        return files;
    };

    var cacheFiles = cacheFilesFactory([
        {
            name: 'angular',
            version: '1.3.8'
        },
        {
            name: 'angular',
            version: '1.3.9'
        },
        {
            name: 'jquery',
            version: '1.0.0'
        }
    ]);

    var cacheDir = new helpers.TempDir(cacheFiles);

    it('correctly reads arguments', function() {
        expect(cacheClean.readOptions(['jquery', 'angular'])).to.eql([
            ['jquery', 'angular'],
            {}
        ]);
    });

    it('removes all cache', function() {
        cacheDir.prepare();

        return helpers
            .run(cacheClean, [
                undefined,
                {},
                {
                    storage: {
                        packages: cacheDir.path
                    }
                }
            ])
            .spread(function(result) {
                object.map(cacheFiles, function(_, cacheFile) {
                    expect(cacheDir.exists(cacheFile)).to.be(false);
                });
            });
    });

    it('removes single package', function() {
        cacheDir.prepare();

        return helpers
            .run(cacheClean, [
                ['angular'],
                {},
                {
                    storage: {
                        packages: cacheDir.path
                    }
                }
            ])
            .spread(function(result) {
                var paths = Object.keys(cacheFiles);
                expect(cacheDir.exists(paths[0])).to.be(false);
                expect(cacheDir.exists(paths[1])).to.be(false);
                expect(cacheDir.exists(paths[2])).to.be(true);
            });
    });

    it('removes single package package version', function() {
        cacheDir.prepare();

        return helpers
            .run(cacheClean, [
                ['angular#1.3.8'],
                {},
                {
                    storage: {
                        packages: cacheDir.path
                    }
                }
            ])
            .spread(function(result) {
                var paths = Object.keys(cacheFiles);
                expect(cacheDir.exists(paths[0])).to.be(false);
                expect(cacheDir.exists(paths[1])).to.be(true);
                expect(cacheDir.exists(paths[2])).to.be(true);
            });
    });
});