'use strict';

var ENCRYPTION_METHOD_NONE = 0;
var ENCRYPTION_METHOD_STARTTLS = 1;
var ENCRYPTION_METHOD_TLS = 2;

var SetCredentialsCtrl = function($scope, $location, $routeParams, $q, auth, connectionDoctor) {
    !$routeParams.dev && !auth.isInitialized() && $location.path('/'); // init app

    //
    // Presets and Settings
    //

    var mailConfig = $scope.state.login.mailConfig;
    $scope.useOAuth = !!auth.oauthToken;
    $scope.showDetails = (mailConfig.imap.source === 'guess');

    // set email address
    if ($scope.useOAuth) {
        $scope.emailAddress = auth.emailAddress;
    } else {
        $scope.emailAddress = $scope.state.login.emailAddress;
    }

    // SMTP config
    $scope.smtpHost = mailConfig.smtp.hostname;
    $scope.smtpPort = parseInt(mailConfig.smtp.port, 10);

    // transport encryption method
    if (mailConfig.smtp.secure && !mailConfig.smtp.ignoreTLS) {
        $scope.smtpEncryption = ENCRYPTION_METHOD_TLS;
    } else if (!mailConfig.smtp.secure && !mailConfig.smtp.ignoreTLS) {
        $scope.smtpEncryption = ENCRYPTION_METHOD_STARTTLS;
    } else {
        $scope.smtpEncryption = ENCRYPTION_METHOD_NONE;
    }

    // IMAP config
    $scope.imapHost = mailConfig.imap.hostname;
    $scope.imapPort = parseInt(mailConfig.imap.port, 10);

    // transport encryption method
    if (mailConfig.imap.secure && !mailConfig.imap.ignoreTLS) {
        $scope.imapEncryption = ENCRYPTION_METHOD_TLS;
    } else if (!mailConfig.imap.secure && !mailConfig.imap.ignoreTLS) {
        $scope.imapEncryption = ENCRYPTION_METHOD_STARTTLS;
    } else {
        $scope.imapEncryption = ENCRYPTION_METHOD_NONE;
    }

    //
    // Scope functions
    //

    $scope.test = function() {
        // parse the <select> dropdown lists
        var imapEncryption = parseInt($scope.imapEncryption, 10);
        var smtpEncryption = parseInt($scope.smtpEncryption, 10);

        // build credentials object
        var credentials = {
            emailAddress: $scope.emailAddress,
            username: $scope.username || $scope.emailAddress,
            realname: $scope.realname,
            password: $scope.password,
            xoauth2: auth.oauthToken,
            imap: {
                host: $scope.imapHost.toLowerCase(),
                port: $scope.imapPort,
                secure: imapEncryption === ENCRYPTION_METHOD_TLS,
                requireTLS: imapEncryption === ENCRYPTION_METHOD_STARTTLS,
                ignoreTLS: imapEncryption === ENCRYPTION_METHOD_NONE
            },
            smtp: {
                host: $scope.smtpHost.toLowerCase(),
                port: $scope.smtpPort,
                secure: smtpEncryption === ENCRYPTION_METHOD_TLS,
                requireTLS: smtpEncryption === ENCRYPTION_METHOD_STARTTLS,
                ignoreTLS: smtpEncryption === ENCRYPTION_METHOD_NONE
            }
        };

        // use the credentials in the connection doctor
        connectionDoctor.configure(credentials);

        // run connection doctor test suite
        return $q(function(resolve) {
            $scope.busy = true;
            resolve();

        }).then(function() {
            return connectionDoctor.check();

        }).then(function() {
            // persists the credentials and forwards to /login
            auth.setCredentials(credentials);
            $scope.busy = false;
            $location.path('/login');

        }).catch(function(err) {
            // display the error in the settings UI
            $scope.connectionError = err;
            $scope.busy = false;
        });
    };
};

module.exports = SetCredentialsCtrl;