openerp.auth_signup = function(instance) {
    instance.auth_signup = instance.auth_signup || {};
    var _t = instance.web._t;

    instance.web.Login.include({
        start: function() {
            var self = this;
            var d = this._super();

            self.$(".oe_signup_show").hide();
            // to switch between the signup and regular login form
            this.$('a.oe_signup_signup').click(function(ev) {
                if (ev) {
                    ev.preventDefault();
                }
                self.$el.addClass("oe_login_signup");
                self.$(".oe_signup_show").show();
                self.$(".oe_signup_hide").hide();
                return false;
            });
            this.$('a.oe_signup_back').click(function(ev) {
                if (ev) {
                    ev.preventDefault();
                }
                self.$el.removeClass("oe_login_signup");
                self.$(".oe_signup_show").hide();
                self.$(".oe_signup_hide").show();
                delete self.params.token;
                return false;
            });

            // if there is an error message in params, show it then forget it
            if (self.params.error_message) {
                this.show_error(self.params.error_message);
                delete self.params.error_message;
            }

            // in case of a signup, retrieve the user information from the token
            if (self.params.db && self.params.token) {
                d.done(function() {
                    self.rpc("/auth_signup/retrieve", {dbname: self.params.db, token: self.params.token})
                        .done(self.on_token_loaded)
                        .fail(self.on_token_failed)
                });
            }

            // bind reset password link
            this.$('a.oe_signup_reset_password').click(this.do_reset_password);

            // make signup link and reset password link visible only when enabled
            this.$('a.oe_signup_signup').hide();
            this.$('a.oe_signup_reset_password').hide();
            if (this.params.db) {
                this.rpc("/auth_signup/get_config", {dbname: self.params.db})
                    .done(function(result) {
                        if (result.signup) {
                            self.$('a.oe_signup_signup').show();
                        }
                        if (result.reset_password) {
                            self.$('a.oe_signup_reset_password').show();
                        }
                    });
            }

            return d;
        },

        on_token_loaded: function(result) {
            // select the right the database
            this.selected_db = result.db;
            this.on_db_loaded([result.db]);
            if (result.token) {
                // switch to signup mode, set user name and login
                this.$el.addClass("oe_login_signup");
                self.$(".oe_signup_show").show();
                self.$(".oe_signup_hide").hide();
                this.$("form input[name=name]").val(result.name).attr("readonly", "readonly");
                if (result.login) {
                    this.$("form input[name=login]").val(result.login).attr("readonly", "readonly");
                } else {
                    this.$("form input[name=login]").val(result.email);
                }
            } else {
                // remain in login mode, set login if present
                delete this.params.token;
                this.$("form input[name=login]").val(result.login || "");
            }
        },

        on_token_failed: function(result, ev) {
            if (ev) {
                ev.preventDefault();
            }
            this.show_error("Invalid signup token");
            delete this.params.db;
            delete this.params.token;
        },

        on_submit: function(ev) {
            if (ev) {
                ev.preventDefault();
            }
            if (this.$el.hasClass("oe_login_signup")) {
                // signup user (or reset password)
                var db = this.$("form [name=db]").val();
                var name = this.$("form input[name=name]").val();
                var login = this.$("form input[name=login]").val();
                var password = this.$("form input[name=password]").val();
                var confirm_password = this.$("form input[name=confirm_password]").val();
                if (!db) {
                    this.do_warn("Login", "No database selected !");
                    return false;
                } else if (!name) {
                    this.do_warn("Login", "Please enter a name.");
                    return false;
                } else if (!login) {
                    this.do_warn("Login", "Please enter a username.");
                    return false;
                } else if (!password || !confirm_password) {
                    this.do_warn("Login", "Please enter a password and confirm it.");
                    return false;
                } else if (password !== confirm_password) {
                    this.do_warn("Login", "Passwords do not match; please retype them.");
                    return false;
                }
                var params = {
                    dbname : db,
                    token: this.params.token || "",
                    name: name,
                    login: login,
                    password: password,
                };
                
                var self = this,
                    super_ = this._super;
                this.rpc('/auth_signup/signup', params)
                    .done(function(result) {
                        if (result.error) {
                            self.show_error(result.error);
                        } else {
                            super_.apply(self, [ev]);
                        }
                    });
            } else {
                // regular login
                this._super(ev);
            }
        },

        do_reset_password: function(ev) {
            if (ev) {
                ev.preventDefault();
            }
            var db = this.$("form [name=db]").val();
            var login = this.$("form input[name=login]").val();
            if (!db) {
                this.do_warn("Login", "No database selected !");
                return false;
            } else if (!login) {
                this.do_warn("Login", "Please enter a username or email address.")
                return false;
            }
            var params = {
                dbname : db,
                login: login,
            };
            var url = "/auth_signup/reset_password?" + $.param(params);
            window.location = url;
        },
    });
};