BAH!

gistfile1.cs

@{ 
    if (Model.useDocCheck && MindBus.Extensions.DocCheck.IsLoggedIn() == false)
    {
        @Model.IntroText
        @DocCheck.RenderDocCheck(Model.AncestorOrSelf(1).DocCheckUrl)
        return;
    }
    
    if (Model.HasValue("hideForm") && Model.hideForm == true)
    {
        return;
    }

    Page.FormVariables = new FormVariables(Parameter, Model);
    Page.Errors = new List<string>();
    Page.Model = Model;
}


<div class="form-box">
    @(HttpContext.Current.Request["form-posted"] != "1" ? RenderContactForm() : TrySendForm())
</div>

@helper RenderContactForm()
    {
    <a id="cultivcontactform"></a>
    <form action="#cultivcontactform" method="post" class="contact-form">
        <fieldset>
            <input type="hidden" name="form-posted" value="1" />

            @RenderTextField(Page.FormVariables.Name, Page.FormVariables.NameFieldName, Page.FormVariables.NameFieldError, "text")
            @RenderTextField(library.GetDictionaryItem("ContactFormLastName"), "lastname-req", library.GetDictionaryItem("ContactFormLastNameError"), "text")
            @RenderTextField(Page.FormVariables.Email, Page.FormVariables.EmailFieldName, Page.FormVariables.EmailFieldError, "text")
            @RenderTextareaField(Page.FormVariables.Message, Page.FormVariables.MessageFieldName, Page.FormVariables.MessageFieldError, "textarea")
            @RenderCheckboxField(Page.FormVariables.SendCopy, Page.FormVariables.SendCopyFieldName, "", "checkbox", "checkbox")

            <div class="row submitrow">
                <input type="submit" id="cultivcontactformsubmit" value="@library.GetDictionaryItem("ContactFormSubmit")" />
                @if (Page.Errors.Count > 0 && Page.Errors.Contains("Other") == false)
                {
                    <div class="note">@Page.FormVariables.ErrorsInForm</div>
                }
                @if (Page.Errors.Count > 0 && Page.Errors.Contains("Other"))
                {
                    <div class="note">@Page.FormVariables.ErrorSendingForm</div>
                }
            </div>
        </fieldset>
    </form>
}

@helper RenderTextField(string fieldLabel, string fieldName, string errorText, string className)
    {
    <div class="row">
        <label for="@fieldName">@fieldLabel</label>
        <input type="text" id="@fieldName" name="@fieldName" class="default @className @(Page.Errors.Contains(fieldName) ? "error" : "")" value="@HttpContext.Current.Request[fieldName]" />
        @if (Page.Errors.Contains(fieldName))
        {
            <span class="error">@errorText</span>
        }
    </div>
}

@helper RenderTextareaField(string fieldLabel, string fieldName, string errorText, string className)
    {
    <div class="row">
        <label for="@fieldName">@fieldLabel</label>
        <textarea id="@fieldName" name="@fieldName" class="textarea default @className @(Page.Errors.Contains(fieldName) ? "error" : "")" cols="30" rows="10">@HttpContext.Current.Request[fieldName]</textarea>
        @if (Page.Errors.Contains(fieldName))
        {
            <span class="error">@errorText</span>
        }
    </div>
}
@helper RenderCheckboxField(string fieldLabel, string fieldName, string errorText, string className, string labelClassName)
    {
    <div class="row">
        <input type="checkbox" id="@fieldName" name="@fieldName" class="default @className @(Page.Errors.Contains(fieldName) ? "error" : "")" @(HttpContext.Current.Request[Page.FormVariables.SendCopyFieldName] == "on" ? "checked=checked" : "") />
        <label for="@fieldName" class="@labelClassName">@fieldLabel</label>
        @if (Page.Errors.Contains(fieldName))
        {
            <span class="error">@errorText</span>
        }
    </div>
}
    
@helper TrySendForm()
    {
        if (Request.Url.AbsoluteUri.Contains("form-posted") == false)
        {
            Page.Errors = GetFormErrors();
            if (Page.Errors.Count == 0)
            {
                Page.Errors.AddRange(TrySendMail(Page, GetMailVariables(Page)));

                var sendCopy = HttpContext.Current.Request[Page.FormVariables.SendCopyFieldName] == "on";
                if (sendCopy)
                {
                    Page.Errors.AddRange(TrySendMail(Page, GetMailVariablesCopyToSender(Page)));
                }

                if (Page.Errors.Count == 0)
                {
                    Response.Redirect(Page.FormVariables.RedirectUrl);
                }
            }
            else
            {
            @RenderContactForm()
            }
        }
        else
        {
        <p class="sent-confirmation">@Page.FormVariables.FormSentConfirmation</p>
        } 
}
@functions 
{
    private static List<string> GetFormErrors()
    {
        var errorFields = new List<string>();
        foreach (string key in HttpContext.Current.Request.Form)
        {
            if (key.EndsWith("-req") && HttpContext.Current.Request.Form[key] == "")
            {
                errorFields.Add(key);
            }
            if (key.EndsWith("-req-mail") && (HttpContext.Current.Request.Form[key] == "" || System.Text.RegularExpressions.Regex.IsMatch(HttpContext.Current.Request.Form[key], @"[a-zA-Z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-zA-Z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-zA-Z0-9](?:[a-zA-Z0-9-]*[a-z0-9])?\.)+[a-zA-Z0-9](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?") == false))
            {
                errorFields.Add(key);
            }
        }
        return errorFields;
    }

    private static MailVariables GetMailVariables(dynamic page)
    {
        var mailVariables = new MailVariables
        {
            Content = GetMailContent(page, page.FormVariables.MailIntroText),
            From = page.FormVariables.MailFrom,
            // To make sure your mail isn't marked as spam the from address
            // is always the configured "from" address, make sure the domain 
            // corresponds with your SMTP server configuration

            FromName = HttpUtility.HtmlEncode(HttpContext.Current.Request[page.FormVariables.NameFieldName]),
            ReplyTo = HttpUtility.HtmlEncode(HttpContext.Current.Request[page.FormVariables.EmailFieldName]),
            Subject = page.FormVariables.MailSubject,
            To = page.FormVariables.MailFrom,
            ToName = page.FormVariables.MailFromName,
            EnableSsl = page.FormVariables.EnableSsl
        };

        return mailVariables;
    }

    private static MailVariables GetMailVariablesCopyToSender(dynamic page)
    {
        var mailVariables = new MailVariables
        {
            Content = GetMailContent(page, page.FormVariables.MailIntroTextCopyToSender),
            From = page.FormVariables.MailFrom,
            // To make sure your mail isn't marked as spam the from address
            // is always the configured "from" address, make sure the domain 
            // corresponds with your SMTP server configuration

            FromName = page.FormVariables.MailFromName,
            ReplyTo = page.FormVariables.MailFrom,
            Subject = page.FormVariables.MailSubjectCopyToSender,
            To = HttpUtility.HtmlEncode(HttpContext.Current.Request[page.FormVariables.EmailFieldName]),
            ToName = HttpUtility.HtmlEncode(HttpContext.Current.Request[page.FormVariables.NameFieldName]),
            EnableSsl = page.FormVariables.EnableSsl
        };

        return mailVariables;
    }

    private static string GetMailContent(dynamic page, string mailIntroText)
    {
        var name = HttpUtility.HtmlEncode(HttpContext.Current.Request[page.FormVariables.NameFieldName]);
        var lastname = HttpUtility.HtmlEncode(HttpContext.Current.Request["lastname-req"]);
        var email = HttpUtility.HtmlEncode(HttpContext.Current.Request[page.FormVariables.EmailFieldName]);
        var message = HttpUtility.HtmlEncode(HttpContext.Current.Request[page.FormVariables.MessageFieldName]).Replace("\n", "<br />");

        var mailContent = string.Format(
                                 "{0}<br /><br /><table><tr><td valign=\"top\"><p><strong>{1}</strong></p></td><td valign=\"top\"><p>{2}</p></td></tr><tr><td valign=\"top\"><p><strong>{3}</strong></p></td><td valign=\"top\"><p>{4}</p></td></tr><tr><td valign=\"top\"><p><strong>{5}</strong></p></td><td valign=\"top\"><p>{6}</p></td></tr><tr><td valign=\"top\"><p><strong>{7}</strong></p></td><td valign=\"top\"><p>{8}</p></td></tr></table>",
                                 SurroundWithArial(mailIntroText),
                                 SurroundWithArial(page.FormVariables.Name),
                                 SurroundWithArial(name),
                                 SurroundWithArial(library.GetDictionaryItem("ContactFormLastName")),
                                 SurroundWithArial(lastname),
                                 SurroundWithArial(page.FormVariables.Email),
                                 SurroundWithArial(email),
                                 SurroundWithArial(page.FormVariables.Message),
                                 SurroundWithArial(message)
                    );

        // This if and the mailTemplateProperty are here to make the code 4.7.0 compatible
        // As of 4.7.1 you only have to do: 
        // if(page.Model.MailTemplate.ToString() != "") { var mailTemplate = page.Model.MailTemplate.ToString(); //start replacements }
        if (page.Model.MailTemplate.GetType() != typeof(umbraco.MacroEngines.DynamicNull))
        {
            var mailTemplateProperty = page.Model.MailTemplate;
            var mailTemplate = mailTemplateProperty.GetType() == typeof(umbraco.MacroEngines.DynamicXml)
                                   ? mailTemplateProperty.ToXml().ToString().Trim()
                                   : mailTemplateProperty.ToString();

            if (mailTemplate != "")
            {
                mailTemplate = mailTemplate.Replace("%%INTROTEXT%%", mailIntroText);
                mailTemplate = mailTemplate.Replace("%%NAMELABEL%%", page.FormVariables.Name);
                mailTemplate = mailTemplate.Replace("%%NAME%%", name);
                mailTemplate = mailTemplate.Replace("%%EMAILLABEL%%", page.FormVariables.Email);
                mailTemplate = mailTemplate.Replace("%%EMAIL%%", email);
                mailTemplate = mailTemplate.Replace("%%MESSAGELABEL%%", page.FormVariables.Message);
                mailTemplate = mailTemplate.Replace("%%MESSAGE%%", message);

                mailContent = mailTemplate;
            }
        }

        return mailContent;
    }

    private static string SurroundWithArial(string input)
    {
        return string.Format("<font face=\"Arial\" size=\"3\">{0}</font>", input);
    }

    private static IEnumerable<string> TrySendMail(dynamic page, MailVariables mailVariables)
    {
        var mailSent = SendMail(mailVariables);
        if (mailSent == false)
        {
            page.Errors.Add("Other");
        }

        return page.Errors;
    }

    public static bool SendMail(MailVariables mailVariables)
    {
        try
        {
            var mailMsg = new System.Net.Mail.MailMessage
            {
                From = new System.Net.Mail.MailAddress(HttpUtility.HtmlEncode(mailVariables.From), HttpUtility.HtmlEncode(mailVariables.FromName)),
                Subject = mailVariables.Subject,
                Body = mailVariables.Content,
                IsBodyHtml = true
            };

            mailMsg.To.Add(new System.Net.Mail.MailAddress(HttpUtility.HtmlEncode(mailVariables.To), HttpUtility.HtmlEncode(mailVariables.ToName)));
            mailMsg.Bcc.Add(new System.Net.Mail.MailAddress(HttpUtility.HtmlEncode(mailVariables.From)));
            mailMsg.ReplyToList.Add(new System.Net.Mail.MailAddress(mailVariables.ReplyTo));

            var smtpClient = new System.Net.Mail.SmtpClient { EnableSsl = mailVariables.EnableSsl };

            smtpClient.Send(mailMsg);
            return true;
        }
        catch (Exception ex)
        {
            umbraco.BusinessLogic.Log.Add(umbraco.BusinessLogic.LogTypes.Error, -1, string.Format("Error creating or sending contact mail, check if there is a mailFrom property on your document and that it has a value, or specify a MailFrom parameter on the macro call exception: {0}", ex.InnerException));
        }

        return false;
    }

    public class FormVariables
    {
        public FormVariables(dynamic parameter, dynamic model)
        {
            var modelMailFrom = model.MailFrom.GetType() != typeof(umbraco.MacroEngines.DynamicNull) ? model.MailFrom : "";
            var modelMailFromName = model.MailFromName.GetType() != typeof(umbraco.MacroEngines.DynamicNull) ? model.MailFromName : "";

            MailFrom = GetParamValue(parameter.MailFrom) ?? GetParamValue(modelMailFrom);
            MailFromName = GetParamValue(parameter.MailFromName) ?? GetParamValue(modelMailFromName);

            Name = GetParamValue(parameter.FormLabelName) ?? "Name";
            Email = GetParamValue(parameter.FormLabelEmail) ?? "E-mail";
            Message = GetParamValue(parameter.FormLabelMessage) ?? "Message";
            SendCopy = GetParamValue(parameter.FormLabelSendCopy) ?? "Send me a copy of this mail";

            ErrorsInForm = GetParamValue(parameter.FormValidationError) ?? "Please check the highlighted fields for errors";
            ErrorsendingForm = GetParamValue(parameter.FormGenericError) ?? "There was a technical error sending the form, please try again or contact us in an alternative way.";

            MailSubject = GetParamValue(parameter.MailSubject) ?? "Contact mail";
            MailIntroText = GetParamValue(parameter.MailIntroText) ?? "A contact mail has been submitted with the following details:";

            MailSubjectCopyToSender = GetParamValue(parameter.MailSubjectCopyToSender) ?? "Copy of contact mail";
            MailIntroTextCopyToSender = GetParamValue(parameter.MailIntroTextCopyToSender) ?? "You have contacted us with the information below, we will get back to you soon.";

            FormSentConfirmation = GetParamValue(parameter.FormSentConfirmation) ?? "Thank you, we will get back to you soon.";

            RedirectUrl = GetParamValue(parameter.RedirectUrl) ?? model.Url + "?form-posted=1";

            bool enableSsl;
            bool.TryParse(parameter.EnableSsl, out enableSsl);
            EnableSsl = enableSsl;

            NameFieldName = "name-req";
            NameFieldError = GetParamValue(parameter.NameFieldError) ?? "Please enter your name";
            EmailFieldName = "email-req-mail";
            EmailFieldError = GetParamValue(parameter.EmailFieldError) ?? "Please enter a valid e-mailddress";
            MessageFieldName = "message-req";
            MessageFieldError = GetParamValue(parameter.MessageFieldError) ?? "Please enter a message";
            SendCopyFieldName = "sendcopy";
        }

        public string MailFrom { get; set; }
        public string MailFromName { get; set; }

        public string Name { get; set; }
        public string Email { get; set; }
        public string Message { get; set; }
        public string SendCopy { get; set; }

        public string ErrorsInForm { get; set; }
        public string ErrorsendingForm { get; set; }

        public string MailSubject { get; set; }
        public string MailIntroText { get; set; }

        public string MailSubjectCopyToSender { get; set; }
        public string MailIntroTextCopyToSender { get; set; }

        public string FormSentConfirmation { get; set; }

        public string RedirectUrl { get; set; }
        public bool EnableSsl { get; set; }

        public string NameFieldName { get; set; }
        public string NameFieldError { get; set; }
        public string EmailFieldName { get; set; }
        public string EmailFieldError { get; set; }
        public string MessageFieldName { get; set; }
        public string MessageFieldError { get; set; }
        public string SendCopyFieldName { get; set; }

        public static string GetParamValue(dynamic input)
        {
            if (input != null && input.StartsWith("[!") && input.EndsWith("]"))
            {
                var dictKey = input.Substring(2, input.LastIndexOf("]") - 2);
                input = library.GetDictionaryItem(dictKey);
            }

            return input;
        }
    }

    public class MailVariables
    {
        public string Content { get; set; }
        public string Subject { get; set; }
        public string To { get; set; }
        public string ToName { get; set; }
        public string From { get; set; }
        public string FromName { get; set; }
        public string ReplyTo { get; set; }
        public bool EnableSsl { get; set; }
    }
}