var vows = require('vows'),
    assert = require('assert'),
    log4js = require('../lib/log4js'),
    sandbox = require('sandboxed-module');

function setupLogging(category, options) {
    var msgs = [];

    var fakeMailer = {
		createTransport: function (name, options) {
			return {
				config: options,
				sendMail: function (msg, callback) {
				    msgs.push(msg);
				    callback(null, true);
				}
			};
		}
    };

    var smtpModule = sandbox.require('../lib/appenders/smtp', {
		requires: {
		    'nodemailer': fakeMailer
		}
    });

    log4js.addAppender(smtpModule.configure(options), category);

    return {
		logger: log4js.getLogger(category),
		mailer: fakeMailer,
		results: msgs
    };
}

function checkMessages (result, sender, subject) {
    for (var i = 0; i < result.results.length; ++i) {
		assert.equal(result.results[i].from, sender);
		assert.equal(result.results[i].to, 'recipient@domain.com');
		assert.equal(result.results[i].subject, subject ? subject : 'Log event #' + (i+1));
		assert.ok(new RegExp('.+Log event #' + (i+1) + '\n$').test(result.results[i].text));
    }
}

log4js.clearAppenders();
vows.describe('log4js smtpAppender').addBatch({
    'minimal config': {
		topic: function() {
		    var setup = setupLogging('minimal config', {
			recipients: 'recipient@domain.com',
			transport: "SMTP",
			SMTP: {
			    port: 25,
			    auth: {
				    user: 'user@domain.com'
			    }
			}
		    });
		    setup.logger.info('Log event #1');
		    return setup;
		},
		'there should be one message only': function (result) {
		    assert.equal(result.results.length, 1);
		},
		'message should contain proper data': function (result) {
		    checkMessages(result);
		}
    },
    'fancy config': {
		topic: function() {
		    var setup = setupLogging('fancy config', {
			recipients: 'recipient@domain.com',
			sender: 'sender@domain.com',
			subject: 'This is subject',
			transport: "SMTP",
			SMTP: {
			    port: 25,
			    auth: {
				    user: 'user@domain.com'
			    }
			}
		    });
		    setup.logger.info('Log event #1');
		    return setup;
		},
		'there should be one message only': function (result) {
		    assert.equal(result.results.length, 1);
		},
		'message should contain proper data': function (result) {
		    checkMessages(result, 'sender@domain.com', 'This is subject');
		}
    },
    'separate email for each event': {
		topic: function() {
		    var self = this;
		    var setup = setupLogging('separate email for each event', {
				recipients: 'recipient@domain.com',
				transport: "SMTP",
				SMTP: {
				    port: 25,
				    auth: {
					    user: 'user@domain.com'
				    }
				}
		    });
		    setTimeout(function () {
		    	setup.logger.info('Log event #1');
		    }, 0);
		    setTimeout(function () {
		    	setup.logger.info('Log event #2');
		    }, 500);
		    setTimeout(function () {
		    	setup.logger.info('Log event #3');
		    }, 1050);
		    setTimeout(function () {
		    	self.callback(null, setup);
		    }, 2100);
		},
		'there should be three messages': function (result) {
		    assert.equal(result.results.length, 3);
		},
		'messages should contain proper data': function (result) {
		    checkMessages(result);
		}
    },
    'multiple events in one email': {
		topic: function() {
		    var self = this;
		    var setup = setupLogging('multiple events in one email', {
				recipients: 'recipient@domain.com',
				sendInterval: 1,
				transport: "SMTP",
				SMTP: {
				    port: 25,
				    auth: {
					    user: 'user@domain.com'
				    }
				}
		    });
		    setTimeout(function () {
		    	setup.logger.info('Log event #1');
		    }, 0);
		    setTimeout(function () {
		    	setup.logger.info('Log event #2');
		    }, 500);
		    setTimeout(function () {
		    	setup.logger.info('Log event #3');
		    }, 1050);
		    setTimeout(function () {
		    	self.callback(null, setup);
		    }, 2100);
		},
		'there should be two messages': function (result) {
		    assert.equal(result.results.length, 2);
		},
		'messages should contain proper data': function (result) {
		    assert.equal(result.results[0].to, 'recipient@domain.com');
		    assert.equal(result.results[0].subject, 'Log event #1');
		    assert.equal(result.results[0].text.match(new RegExp('.+Log event #[1-2]$', 'gm')).length, 2);
	
		    assert.equal(result.results[1].to, 'recipient@domain.com');
		    assert.equal(result.results[1].subject, 'Log event #3');
		    assert.ok(new RegExp('.+Log event #3\n$').test(result.results[1].text));
		}
    }

}).export(module);