var App = App || {};
App.Presenters = App.Presenters || {};

App.Presenters.UserAccountRemovalPresenter = function(
    jQuery,
    util,
    promise,
    api,
    auth,
    router,
    messagePresenter) {

    var target;
    var templates = {};
    var user;
    var privileges = {};

    function init(params, loaded) {
        user = params.user;
        target = params.target;

        privileges.canDeleteAccount =
            auth.hasPrivilege(auth.privileges.deleteAllAccounts) ||
            (auth.hasPrivilege(auth.privileges.deleteOwnAccount) && auth.isLoggedIn(user.name));

        promise.wait(util.promiseTemplate('account-removal'))
            .then(function(template) {
                templates.accountRemoval = template;
                render();
                loaded();
            }).fail(function() {
                console.log(arguments);
                loaded();
            });
    }

    function render() {
        var $el = jQuery(target);
        $el.html(templates.accountRemoval({
            user: user,
            canDeleteAccount: privileges.canDeleteAccount}));

        $el.find('form').submit(accountRemovalFormSubmitted);
    }

    function getPrivileges() {
        return privileges;
    }

    function accountRemovalFormSubmitted(e) {
        e.preventDefault();
        var $el = jQuery(target);
        var $messages = $el.find('.messages');
        messagePresenter.hideMessages($messages);
        if (!$el.find('input[name=confirmation]:visible').prop('checked')) {
            messagePresenter.showError($messages, 'Must confirm to proceed.');
            return;
        }
        promise.wait(api.delete('/users/' + user.name))
            .then(function() {
                if (user.name === auth.getCurrentUser().name) {
                    auth.logout();
                }
                var $messageDiv = messagePresenter.showInfo($messages, 'Account deleted. <a href="">Back to main page</a>');
                $messageDiv.find('a').click(mainPageLinkClicked);
            }).fail(function(response) {
                messagePresenter.showError($messages, response.json && response.json.error || response);
            });
    }

    function mainPageLinkClicked(e) {
        e.preventDefault();
        router.navigateToMainPage();
    }

    return {
        init: init,
        render: render,
        getPrivileges: getPrivileges
    };

};

App.DI.register('userAccountRemovalPresenter', ['jQuery', 'util', 'promise', 'api', 'auth', 'router', 'messagePresenter'], App.Presenters.UserAccountRemovalPresenter);