view/js/user.js

User = {
        randomString: function(len)
        {
                var hex = ['0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'];
                var string = "";
                while(len-->0) { string += hex[parseInt(16*Math.random())]; }
                return string; },

        markInvalid: function(input, reason) {
                var classes = "";
                if(input["class"]) { classes = input.getAttribute("class"); }
                input.setAttribute("class", classes + " error");
                input.title = reason;
                return false; },

        markValid: function(input) {
                if(input.getAttribute("class")) {
                        var stripped = input.getAttribute("class").replace("error", "");
                        input.setAttribute("class", stripped); }
                input.title = "";
                return true; },

        validName: function(input)
        {
                var username = input.value;
                if(username.trim()=="") { return this.markInvalid(input, "You forgot your user name."); }
                if(username.indexOf("'")>-1) { return this.markInvalid(input, "Apostrophes are not allowed in user names."); }
                if(username.length<4) { return this.markInvalid(input, "Sorry, user names must be more than 3 letters."); }
                return this.markValid(input);
        },

        validEmail: function(input)
        {
                var valid = /[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?/.test(input.value);
                if(!valid) { return this.markInvalid(input,"This is not a real email address..."); }
                return this.markValid(input);
        },

        passwordMatch: function(input1, input2)
        {
                var matched = (input1.value==input2.value);
                if(!matched) { return this.markInvalid(input2, "The two passwords don't match"); }
                return this.markValid(input2);
        },

        validPassword: function(input)
        {
                var password = input.value;
                if(password.trim()=="") { return this.markInvalid(input, "You need to fill in a password"); }
                return this.markValid(input);
        },

        strongPassword: function(input)
        {
                var password = input.value;
                if(!this.validPassword(input)) { return false; }
                if(password.length<8) { return this.markInvalid(input, "Your password is too easy to guess, please pick something longer. Use an entire sentence. if you like."); }
                return this.markValid(input);
        },

        processRegistration: function()
        {
                var valid = true;
                var form = document.getElementById('registration');

                valid &= this.validName(form["username"]);
                valid &= this.validEmail(form["email"]);
                valid &= this.passwordMatch(form["password1"], form["password2"]);
                valid &= this.strongPassword(form["password1"]);

                if(valid) {
                        form["sha1"].value = Sha1.hash(form["password1"].value);
                        form["password1"].value = this.randomString(16);
                        form["password2"].value = form["password1"].value;
                        form.submit(); }
        },

        processLogin: function()
        {
                var valid = true;
                var form = document.getElementById('login');

                valid &= this.validName(form["username"]);
                valid &= this.validPassword(form["password1"]);

                if(valid) {
                        form["sha1"].value = Sha1.hash(form["password1"].value);
                        form["password1"].value = this.randomString(16);
                        form.submit(); }
        },

        processUpdate: function()
        {
                var valid = true;
                var update = false;
                var form = document.getElementById('update');

                if(form["email"].value.trim()!="") {
                        valid &= this.validEmail(form["email"]);
                        if(valid) update = true; }

                if(form["password1"].value.trim()!="") {
                        valid &= this.passwordMatch(form["password1"], form["password2"]);
                        valid &= this.strongPassword(form["password1"]);
                        if(valid) {
                                form["sha1"].value = Sha1.hash(form["password1"].value);
                                form["password1"].value = this.randomString(16);
                                form["password2"].value = form["password1"].value;
                                update = true; }}

                if(valid && update) { form.submit(); }
        },


  add: function(p, c) { p.appendChild(c); },

  make: function(tag, properties) {
      var tag = document.createElement(tag);
      if(properties !== null) {
        for(property in properties) {
          tag[property] = properties[property]; }}
      return tag; },

  injectLogin: function(parent) {
    var add = this.add;
    var make = this.make;

    var form = this.make("form", {id: "usered_login_form", action: ".", method: "POST"});
    add(form, make("label", {"for": "usered_username", innerHTML: "user name"}));
    add(form, make("input", {id: "usered_username", type: "text"}));
    add(form, make("label", {"for": "usered_password", innerHTML: "password"}));
    add(form, make("input", {id: "usered_password", type: "password"}));
    add(form, make("input", {id: "usered_login_button", type: "submit", value: "log in"}));
    add(parent, form);
  },


  injectLogout: function(parent) {
    var add = this.add;
    var make = this.make;

    var form = make("form", {id: "usered_logout_form", action: ".", method: "POST"});
    add(form, make("input", {type: "hidden", name: "op", value: "logout"}));
    add(form, make("input", {id: "usered_logout_button", type: "submit", value: "log out"}));
    add(parent, form)
  }
};
