/**
 * User Management - signup, login 
 *
 * Copyright: (c)2007 CK Web Technologies
 * Author:    Chris Knowles <chris.knowles@ckweb.com.au>
 * Version:   $Id: User.js 2 2008-06-19 06:13:26Z Chris $
 */

var User = function(app)
{
    this.app = app;
    this.loggedIn = false;
    this.email = null;
    this.playlistName = null;
    this.html = $D.id('challenge');
    this.logoutButton = $D.id('logoutButton');
    this.loggingOut = false;
    this.preventHideChallenge = false;
    
    this.signup = function()
    {
        var self  = this;
        var form = $D.id('signupForm');
        if (!form.signupEmail.value || !form.signupPassword.value || !form.signupChkPassword.value) {
            alert("You must enter all fields except playlist name");
            return false;
        }
        if (form.signupPassword.value != form.signupChkPassword.value) {
            alert("Passwords do not match, please try again");
            return false;
        }
        var http = new $H;
        http.post('signup/', 'email=' + form.signupEmail.value + '&password=' + form.signupPassword.value + '&name=' + form.playlistName.value, function(){self.finishSignup(http)});
        return true;
    };
    
    this.sendPassword = function()
    {
        var form = $D.id('forgottenPasswordForm');
        if (!form.loginEmail.value) {
           alert("Please enter an email address");
        } else {
            var http = new $H;
            var self = this;
            http.get('send_password/' + form.loginEmail.value + '/', false, function(){self.finishSendPassword(http)});
            this.tmp = $D.getContent(form);
            this.tmpEmail = form.loginEmail.value;
            $D.setContent(form, "Please wait...");
            return true;
        }
    };
    
    this.finishSendPassword = function(http)
    {
        if (http.text == '1') {
            $D.setContent('forgottenPasswordForm', "<p>There was a problem with the system please  <a href='send_password/' id='pwdLink'>try again</a></p>");
            var self  = this;
            this.preventHideChallenge = true;
            $E.listen('pwdLink', 'click', function(e){$E.kill(e);self.showChallenge("forgottenPassword")});
            
        } else if (http.text == '2') {
            $D.setContent('forgottenPasswordForm', this.tmp);
            var form = $D.id('forgottenPasswordForm');
            form.loginEmail.value = this.tmpEmail;
            this.tmp = "";
            var self = this;
            $E.listen('pwdButton', 'click', function(){self.sendPassword()});
            $E.listen('loginLink', 'click', function(e)
                {
                    $E.kill(e);
                    self.preventHideChallenge = true;
                    self.showChallenge("login");
                }
            );
            alert("The email address is not in our system. Please check it.");
        
        } else if (http.text == '3') {
            $D.setContent('forgottenPasswordForm', "<p>Your password has been sent to your email address. Please check in a few minutes.</p><p><a href='login/' id='loginLink'>Login &raquo;</a></p>");
            this.preventHideChallenge = true;
            var self  = this;
            $E.listen('loginLink', 'click', function(e){$E.kill(e);self.showChallenge("login")});
        }
    };

    this.finishSignup = function(http)
    {
        var data = http.text.split("|");
        if (data[0] == 'success') {
            this.loggedIn = true;
            this.activateLogoutButton();
            this.email = data[1];
            this.playlistName = data[2];
            $D.setContent('my_playlist', data[2]);
            this.app.Storage.save();
            this.hideChallenge();
            return true;
        } else if (data[1] == "exists") {
            alert("The email address already has a playlist - please use another email address or login to access the existing playlist. If you've forgotten your password, use the lost password link on this page.");
        } else if (data[1] == "email") {
            alert("The email address is not a valid one - please check it and try again");
        }
        return false;
    };
    
    this.login = function()
    {
        var button = $D.id('loginButton');
        var self  = this;
        var form = $D.id('loginForm');
        if (form.loginEmail.value && form.loginPassword.value) {
            var http = new $H;
            http.post(
                'login/', 
                'email=' + form.loginEmail.value + '&password=' + form.loginPassword.value, 
                function(){self.finishLogin(http)}
            );
        } else {
            alert("Please enter both an email and a password");
        }
    }; 
    
    this.finishLogin = function(http)
    {
        if (http.text != 0) {
        
            // clear playlist
            if (this.app.Playlist.totalSongs == 0) {
                $D.setContent('playlist', '');
            }
            
            // get record parts
            var record = http.text.split("|||");
            
            // flag as logged in
            this.loggedIn = true;
            
            // set user
            this.email = record[0];
            
            // set logout button
            this.activateLogoutButton();
            
            // set playlist name
            $D.setContent('my_playlist', record[1]);
            
            // started new playlist
            if (this.app.Playlist.totalSongs > 0) {
                
                if (record[2].length > 0 || record[3].length > 0) {

                    this.preventHideChallenge = true;
                    this.showChallenge('confirmOverride');
                    
                    var self = this;
                    $E.listen('confirmOverride', 'click', 
                        function(e)
                        {
                            $E.kill(e);
                            var target = $E.getTarget(e);
                            if (target.id == 'savedList') {
                                self.handleDb(record);
                                
                            } else if (target.id == 'newList') {
                                self.app.Storage.clearDb(self.email);
                                self.preventHideChallenge = false;
                                self.hideChallenge();
                                self.app.Storage.setAutoSave();
                            }
                        }
                    );
                    return true;
                      
                }
             
            // not started new playlist   
            } else {
                // handle db
                this.handleDb(record); 
            }
            
            this.hideChallenge();
            
            // start auto saving
            this.app.Storage.setAutoSave();
            
            return true;
            
        } else {
            alert("Login details are incorrect - please try again");
            http.cancel();
            
        }
        return false;
    };
    
    this.handleDb = function(record)
    {
        /*
        // both tracks and autosave
        if (record[2] && record[3]) {
        
            this.preventHideChallenge = true;
            this.showChallenge('exitedUnsaved');
            
            var self = this;
            $E.listen('exitedUnsaved', 'click', 
                function(e)
                {
                    $E.kill(e);
                    var target = $E.getTarget(e);
                    if (target.id == 'exitSavedList') {
                        self.app.Playlist.load(record[2]);
                        self.app.Storage.clearAutosave(self.email);
                        self.preventHideChallenge = false;
                        self.hideChallenge();
                                        
                    } else if (target.id == 'exitBackedUpList') {
                        self.app.Playlist.load(record[3]);
                        self.app.Playlist.setUnsaved();
                        self.app.Storage.save('force');
                        self.preventHideChallenge = false;
                        self.hideChallenge();
                        
                    }
                    self.app.Storage.setAutoSave();
                }
            );
            return false;
                    */
            /*
              if (window.confirm("You previously left the page without saving. We have your last saved list and the list as it was when you exited. Do you want to use the list as it was when you exited?")) {
                this.app.Playlist.load(record[3]);
                this.app.Playlist.setUnsaved();
                this.app.Storage.save('force');
                
             } else {
                this.app.Playlist.load(record[2]);
                this.app.Storage.clearAutosave(this.email);
             }
              */
            
        // tracks only
        //} else if (record[2]) {
        if (record[2]) {
            this.app.Playlist.saved = true;          
            this.app.Playlist.load(record[2]);
        }
            /*
        // autosave only   
        } else if (record[3]) {
            this.app.Playlist.saved = true;
            this.app.Playlist.load(record[3]);
            this.app.Storage.save();
            
        }
        */
        this.app.Storage.setAutoSave();
        this.preventHideChallenge = false;
        this.hideChallenge();

    };
           
    this.showChallenge = function(elements)
    {
        var self = this;
        
        // clear player content
        $D.id('player').style.visibility = 'hidden';
        $D.id('player').style.zIndex = '-1';
        $D.setContent($D.id('player-artist'), "");
        $D.setContent($D.id('player-title'), "");
        
        // load interface
        if (elements == 'all') {
            this.html.innerHTML = this.app.Content.all;
        } else if (elements == 'login') {
            this.html.innerHTML = this.app.Content.loginOnly;
        } else if (elements == 'confirmOverride') {
            this.html.innerHTML = this.app.Content.confirmOverride;
        } else if (elements == 'exitedUnsaved') {
            this.html.innerHTML = this.app.Content.exitedUnsaved;
        } else if (elements == 'logoutSave') {
            this.html.innerHTML = this.app.Content.logoutSave;
        } else if (elements == 'forgottenPassword') {
            this.html.innerHTML = this.app.Content.forgottenPassword;
        }
        
        // show the user panel
        if (!this.preventHideChallenge) {
            $F.fadeIn(this.html);
        }
        
        // listen for save later button click
        $E.listen('saveLater', 'click', function(){self.preventHideChallenge = false;self.hideChallenge()});
        
        // listen for signup button click
        $E.listen('signupButton', 'click', function(){self.signup()});
        
        // listen for login button click
        $E.listen('loginButton', 'click', function(){self.login()});
        
        // listen for forgotten password button click
        $E.listen('pwdButton', 'click', function(){self.sendPassword()});
        $E.listen('pwdLink', 'click', function(e)
            {
                $E.kill(e);
                self.preventHideChallenge = true;
                self.showChallenge("forgottenPassword");
            }
        );
        $E.listen('loginLink', 'click', function(e)
            {
                $E.kill(e);
                self.preventHideChallenge = true;
                self.showChallenge("login");
            }
        );
        
        //this.preventHideChallenge = false;
        
    };
    
    this.hideChallenge = function()
    {
        if (!this.preventHideChallenge) {
            $D.id('player').style.visibility = 'visible';
            $F.fadeOut(this.html);
        }
    };
    
    this.activateLogoutButton = function()
    {
        this.logoutButton.className = 'unsaved';
        var self = this;
        $E.listen(this.logoutButton, 'click', function(){self.logout()});
    };

    this.deactivateLogoutButton = function()
    {
        this.logoutButton.className = 'saved';
        var self = this;
        $E.ignore(this.logoutButton, 'click', function(){self.logout()});
    };

    this.logout = function()
    { 
        if (!this.app.Playlist.saved) {
        
            this.showChallenge('logoutSave');
            
            var self = this;
            $E.listen('logoutSave', 'click', 
                function(e)
                {
                    $E.kill(e);
                    var target = $E.getTarget(e);
                    if (target.id == 'saveList') {
                        self.app.Storage.save('logout');
                                        
                    } else if (target.id == 'ignoreList') {
                        self.finishLogout();
                        
                    }
                }
            );
            return false;
            
        } else {
            this.exit();
        }
    };
    
    this.finishLogout = function()
    {
        this.loggingOut = true;
        var http = new $H;
        var self = this;
        http.post('clear_autosave/', 'user=' + this.email, function(){self.exit(http)});
    };
    
    this.exit = function(http)
    {
        window.location = "/";
    };
    
}