Working field config!!!

src/config.rs

@@ -4,12 +4,19 @@ use std::{env, fs::File, io::BufReader};
 
 /// Email server credentials.
 #[derive(Deserialize)]
-pub struct EmailServer {
-    pub server_name: String,
-    pub email: String,
+pub struct EmailCredentials {
+    pub domain: String,
+    pub username: String,
     pub password: String,
 }
 
+#[derive(Deserialize)]
+pub struct Email {
+    pub from: String,
+    pub to: String,
+    pub credentials: EmailCredentials,
+}
+
 /// UTC offset for time formatting.
 #[derive(Deserialize)]
 pub struct UtcOffset {
@@ -17,6 +24,22 @@ pub struct UtcOffset {
     pub minutes: i8,
 }
 
+#[derive(Deserialize)]
+#[serde(tag = "type")]
+pub enum CustomFieldType {
+    Text,
+    Textarea { rows: u8 },
+}
+
+#[derive(Deserialize)]
+pub struct CustomField {
+    pub id: String,
+    pub label: String,
+    #[serde(default)]
+    pub required_feedback: Option<String>,
+    pub field_type: CustomFieldType,
+}
+
 /// Error messages for localization.
 #[derive(Deserialize)]
 pub struct ErrorMessages {
@@ -24,11 +47,46 @@ pub struct ErrorMessages {
     pub email_error: String,
 }
 
-/// Field localization strings in a form with label and invalid feedback on wrong field input.
+fn default_name_label() -> String {
+    "Name".to_string()
+}
+fn default_name_required_feedback() -> String {
+    "Please enter your name".to_string()
+}
 #[derive(Deserialize)]
-pub struct Field {
+pub struct NameField {
+    #[serde(default = "default_name_label")]
     pub label: String,
-    pub invalid_feedback: String,
+    #[serde(default = "default_name_required_feedback")]
+    pub required_feedback: String,
+}
+
+fn default_email_label() -> String {
+    "Email".to_string()
+}
+fn default_email_required_feedback() -> String {
+    "Please enter your email".to_string()
+}
+#[derive(Deserialize)]
+pub struct EmailField {
+    #[serde(default = "default_email_label")]
+    pub label: String,
+    #[serde(default = "default_email_required_feedback")]
+    pub required_feedback: String,
+}
+
+fn default_captcha_label() -> String {
+    "Enter the code above".to_string()
+}
+fn default_captcha_required_feedback() -> String {
+    "Please enter code from the image above".to_string()
+}
+#[derive(Deserialize)]
+pub struct CaptchaField {
+    #[serde(default = "default_captcha_label")]
+    pub label: String,
+    #[serde(default = "default_captcha_required_feedback")]
+    pub required_feedback: String,
 }
 
 /// Localization strings.
@@ -36,34 +94,41 @@ pub struct Field {
 pub struct Strings {
     pub description: String,
     pub title: String,
-    pub name_field: Field,
-    pub email_field: Field,
-    /// No invalid feedback because it is optional.
-    pub telefon_field_label: String,
-    pub message_field: Field,
-    pub captcha_field: Field,
+    pub optional: String,
     pub submit: String,
     pub success: String,
+    pub message_from: String,
+    pub name_field: NameField,
+    pub email_field: EmailField,
+    pub captcha_field: CaptchaField,
+    pub error_messages: ErrorMessages,
+}
+
+fn default_lang() -> String {
+    "en".to_string()
+}
+
+#[derive(Deserialize)]
+pub struct StateConfig {
+    /// The path prefix of all routes.
+    pub path_prefix: String,
+    pub custom_fields: Vec<CustomField>,
+    /// The language tag of the HTML file.
+    #[serde(default = "default_lang")]
+    pub lang: String,
+    pub strings: Strings,
 }
 
 /// Configuration.
 #[derive(Deserialize)]
 pub struct Config {
-    /// The language tag of the HTML file.
-    pub lang: String,
-    /// The path prefix of all routes.
-    pub path_prefix: String,
     /// The server socket address including port.
     pub socket_address: String,
-    pub email_server: EmailServer,
-    /// From mailbox.
-    pub email_from: String,
-    /// To mailbox.
-    pub email_to: String,
+    pub email: Email,
     pub log_file: String,
     pub utc_offset: UtcOffset,
-    pub error_messages: ErrorMessages,
-    pub strings: Strings,
+    #[serde(flatten)]
+    pub state_config: StateConfig,
 }
 
 impl Config {
@@ -77,9 +142,13 @@ impl Config {
         let file = File::open(&config_path)
             .with_context(|| format!("Can not open the config file at the path {config_path}"))?;
         let reader = BufReader::new(file);
-        let config =
+        let mut config: Self =
             serde_yaml::from_reader(reader).context("Can not parse the YAML config file!")?;
 
+        // Add a space at the end for the email subject.
+        config.state_config.strings.message_from =
+            config.state_config.strings.message_from.trim().to_string() + " ";
+
         Ok(config)
     }
 }

src/forms.rs

@@ -1,13 +1,26 @@
+use anyhow::{Context, Result};
 use serde::Deserialize;
+use std::collections::HashMap;
+
+use crate::config::CustomField;
 
 /// Fields of the contact form that persist after a redirection
 /// (example after failed server side validation).
-#[derive(Deserialize, Default)]
-pub struct PersistantContactFormFields {
+#[derive(Deserialize)]
+pub struct PersistantFieldContents {
     pub name: String,
     pub email: String,
-    pub telefon: String,
-    pub message: String,
+    pub custom: Vec<String>,
+}
+
+impl PersistantFieldContents {
+    pub fn new_empty(custom_fields: &Vec<CustomField>) -> Self {
+        Self {
+            name: String::default(),
+            email: String::default(),
+            custom: custom_fields.iter().map(|_| String::default()).collect(),
+        }
+    }
 }
 
 /// The contact form.
@@ -16,6 +29,45 @@ pub struct ContactForm {
     /// The id for the captcha.
     pub id: u16,
     #[serde(flatten)]
-    pub persistant_fields: PersistantContactFormFields,
+    pub persistant_field_contents: PersistantFieldContents,
     pub captcha_answer: String,
 }
+
+impl ContactForm {
+    pub fn from_map(
+        mut map: HashMap<String, String>,
+        custom_fields: &Vec<CustomField>,
+    ) -> Result<Self> {
+        let id = map
+            .get("id")
+            .context("id missing in the submitted form!")?
+            .parse()
+            .context("Failed to parse the submitted id!")?;
+        let captcha_answer = map
+            .remove("captcha_answer")
+            .context("captcha_answer missing in the submitted form!")?;
+        let name = map
+            .remove("name")
+            .context("name missing in the submitted form!")?;
+        let email = map
+            .remove("email")
+            .context("email missing in the submitted form!")?;
+        let mut custom = Vec::with_capacity(custom_fields.len());
+        for field in custom_fields.iter() {
+            custom.push(
+                map.remove(&field.id)
+                    .with_context(|| format!("{} missing in the submitted form!", &field.id))?,
+            );
+        }
+
+        Ok(Self {
+            id,
+            persistant_field_contents: PersistantFieldContents {
+                name,
+                email,
+                custom,
+            },
+            captcha_answer,
+        })
+    }
+}

src/mailer.rs

@@ -7,8 +7,12 @@ use lettre::{
     },
     Tokio1Executor,
 };
+use tracing::info;
 
-use crate::config::Config;
+use crate::{
+    config::{Config, StateConfig},
+    forms::PersistantFieldContents,
+};
 
 type ASmtpTransport = AsyncSmtpTransport<Tokio1Executor>;
 
@@ -23,12 +27,12 @@ impl Mailer {
     pub async fn build(config: &Config) -> Result<Self> {
         // Mail server credentials for login.
         let credentials = Credentials::new(
-            config.email_server.email.clone(),
-            config.email_server.password.clone(),
+            config.email.credentials.username.clone(),
+            config.email.credentials.password.clone(),
         );
 
         // Establish the connection.
-        let mailer = ASmtpTransport::relay(&config.email_server.server_name)
+        let mailer = ASmtpTransport::relay(&config.email.credentials.domain)
             .context("Failed to connect to the email server!")?
             .credentials(credentials)
             .build();
@@ -36,17 +40,20 @@ impl Mailer {
             .test_connection()
             .await
             .context("Email connection test failed!")?;
+        info!("Successful email connection!");
 
         // Set the From and To mailboxes for every sent mail.
         let message_builder = Message::builder()
             .from(
                 config
-                    .email_from
+                    .email
+                    .from
                     .parse()
                     .context("Failed to parse the From mailbox!")?,
             )
             .to(config
-                .email_to
+                .email
+                .to
                 .parse()
                 .context("Failed to parse the To mailbox!")?);
 
@@ -57,23 +64,40 @@ impl Mailer {
     }
 
     /// Sends a mail with data from the contact form.
-    pub async fn send(&self, name: &str, email: &str, telefon: &str, message: &str) -> Result<()> {
-        let name = name.trim().to_string();
-        let subject = "Message from ".to_string() + &name;
+    pub async fn send(
+        &self,
+        persistant_field_contents: &PersistantFieldContents,
+        config: &StateConfig,
+    ) -> Result<()> {
+        let name = persistant_field_contents.name.trim().to_string();
+        let subject = config.strings.message_from.clone() + &name;
         let reply_to = Mailbox::new(
             Some(name),
-            email
+            persistant_field_contents
+                .email
                 .parse()
                 .context("Failed to parse the email from the form to an address!")?,
         );
 
-        let telefon = telefon.trim();
-        let message = message.trim().to_string();
-        let body = if !telefon.is_empty() {
-            message + "\n\nTelefon: " + telefon
-        } else {
-            message
-        };
+        let default_fields_content = format!(
+            "{}: {}\n\n{}: {}\n\n\n",
+            config.strings.name_field.label,
+            persistant_field_contents.name,
+            config.strings.email_field.label,
+            persistant_field_contents.email
+        );
+        let body = config
+            .custom_fields
+            .iter()
+            .map(|field| &field.label)
+            .zip(
+                persistant_field_contents
+                    .custom
+                    .iter()
+                    .map(|content| content.trim()),
+            )
+            .map(|(label, content)| format!("{label}:\n{content}\n\n\n"))
+            .fold(default_fields_content, |acc, s| acc + &s);
 
         let email = self
             .message_builder

src/main.rs

@@ -31,7 +31,7 @@ async fn init(logger_initialized: &mut bool) -> Result<()> {
     *logger_initialized = true;
 
     // The path prefix of all routes.
-    let path_prefix = config.path_prefix.clone();
+    let path_prefix = config.state_config.path_prefix.clone();
 
     let socket_address = config
         .socket_address

src/routes.rs

@@ -4,23 +4,26 @@ use axum::{
     extract::{Form, State},
     response::Response,
 };
-use std::sync::{Arc, Mutex};
+use std::{
+    collections::HashMap,
+    sync::{Arc, Mutex},
+};
 use tracing::{error, info};
 
 use crate::{
     captcha_solutions::CaptchaSolutions,
-    config::Config,
+    config::StateConfig,
     errors::AppError,
-    forms::{ContactForm, PersistantContactFormFields},
+    forms::{ContactForm, PersistantFieldContents},
     mailer::Mailer,
     templates,
 };
 
 /// Parameters to render the contact form.
 pub struct ContactFormParams<'a> {
-    config: Arc<Config>,
+    config: Arc<StateConfig>,
     captcha_solutions: Arc<Mutex<CaptchaSolutions>>,
-    persistant_fields: Option<PersistantContactFormFields>,
+    persistant_field_contents: Option<PersistantFieldContents>,
     error_message: Option<&'a str>,
 }
 
@@ -40,13 +43,16 @@ pub fn render_contact_form(params: ContactFormParams<'_>) -> Result<Response, Ap
             lang: &params.config.lang,
             path_prefix: &params.config.path_prefix,
         },
-        was_validated: params.persistant_fields.is_some(),
+        was_validated: params.persistant_field_contents.is_some(),
         id,
         // Default is empty fields.
-        persistant_fields: params.persistant_fields.unwrap_or_default(),
+        persistant_field_contents: params
+            .persistant_field_contents
+            .unwrap_or_else(|| PersistantFieldContents::new_empty(&params.config.custom_fields)),
         captcha: captcha_base64,
         error_message: params.error_message.unwrap_or_default(),
         strings: &params.config.strings,
+        custom_fields: &params.config.custom_fields,
     };
 
     Ok(template.into_response())
@@ -54,7 +60,7 @@ pub fn render_contact_form(params: ContactFormParams<'_>) -> Result<Response, Ap
 
 /// Index handler.
 pub async fn index(
-    State(config): State<Arc<Config>>,
+    State(config): State<Arc<StateConfig>>,
     State(captcha_solutions): State<Arc<Mutex<CaptchaSolutions>>>,
 ) -> Result<Response, AppError> {
     info!("Visited get(index)");
@@ -62,18 +68,20 @@ pub async fn index(
     render_contact_form(ContactFormParams {
         config,
         captcha_solutions,
-        persistant_fields: None,
+        persistant_field_contents: None,
         error_message: None,
     })
 }
 
 /// Submit handler.
 pub async fn submit(
-    State(config): State<Arc<Config>>,
+    State(config): State<Arc<StateConfig>>,
     State(captcha_solutions): State<Arc<Mutex<CaptchaSolutions>>>,
     State(mailer): State<Arc<Mailer>>,
-    Form(form): Form<ContactForm>,
+    Form(form): Form<HashMap<String, String>>,
 ) -> Result<Response, AppError> {
+    let form = ContactForm::from_map(form, &config.custom_fields)?;
+
     let right_captcha_answer = captcha_solutions
         .lock()
         .unwrap()
@@ -85,27 +93,19 @@ pub async fn submit(
         return render_contact_form(ContactFormParams {
             config: Arc::clone(&config),
             captcha_solutions,
-            persistant_fields: Some(form.persistant_fields),
-            error_message: Some(&config.error_messages.captcha_error),
+            persistant_field_contents: Some(form.persistant_field_contents),
+            error_message: Some(&config.strings.error_messages.captcha_error),
         });
     }
 
-    if let Err(e) = mailer
-        .send(
-            &form.persistant_fields.name,
-            &form.persistant_fields.email,
-            &form.persistant_fields.telefon,
-            &form.persistant_fields.message,
-        )
-        .await
-    {
+    if let Err(e) = mailer.send(&form.persistant_field_contents, &config).await {
         error!("{e:?}");
 
         return render_contact_form(ContactFormParams {
             config: Arc::clone(&config),
             captcha_solutions,
-            persistant_fields: Some(form.persistant_fields),
-            error_message: Some(&config.error_messages.email_error),
+            persistant_field_contents: Some(form.persistant_field_contents),
+            error_message: Some(&config.strings.error_messages.email_error),
         });
     }
 
@@ -113,7 +113,7 @@ pub async fn submit(
 }
 
 /// Called on successful contact form submission.
-pub fn success(config: Arc<Config>) -> Result<Response, AppError> {
+pub fn success(config: Arc<StateConfig>) -> Result<Response, AppError> {
     info!("Successful contact form submission");
 
     // Initialize template.

src/states.rs

@@ -2,12 +2,16 @@ use anyhow::Result;
 use axum::extract::FromRef;
 use std::sync::{Arc, Mutex};
 
-use crate::{captcha_solutions::CaptchaSolutions, config::Config, mailer::Mailer};
+use crate::{
+    captcha_solutions::CaptchaSolutions,
+    config::{Config, StateConfig},
+    mailer::Mailer,
+};
 
 /// The application state.
 #[derive(Clone, FromRef)]
 pub struct AppState {
-    pub config: Arc<Config>,
+    pub config: Arc<StateConfig>,
     pub mailer: Arc<Mailer>,
     pub captcha_solutions: Arc<Mutex<CaptchaSolutions>>,
 }
@@ -17,12 +21,12 @@ impl AppState {
     pub async fn build(config: Config) -> Result<Self> {
         let mailer = Arc::new(Mailer::build(&config).await?);
 
-        let config = Arc::new(config);
+        let state_config = Arc::new(config.state_config);
         // Mutex for write access.
         let captcha_solutions = Arc::new(Mutex::new(CaptchaSolutions::default()));
 
         Ok(Self {
-            config,
+            config: state_config,
             mailer,
             captcha_solutions,
         })

src/templates.rs

@@ -1,6 +1,9 @@
 use askama::Template;
 
-use crate::{config, forms::PersistantContactFormFields};
+use crate::{
+    config::{self, CustomField},
+    forms::PersistantFieldContents,
+};
 
 /// Base template.
 pub struct Base<'a> {
@@ -15,10 +18,11 @@ pub struct ContactForm<'a> {
     pub base: Base<'a>,
     pub was_validated: bool,
     pub id: u16,
-    pub persistant_fields: PersistantContactFormFields,
+    pub persistant_field_contents: PersistantFieldContents,
     pub captcha: String,
     pub error_message: &'a str,
     pub strings: &'a config::Strings,
+    pub custom_fields: &'a Vec<CustomField>,
 }
 
 /// Sucessful contact form submission template.

templates/contact_form.askama.html

@@ -16,62 +16,76 @@
             <label for="name" class="form-label">{{ strings.name_field.label }}</label>
             <input type="text"
                    name="name"
-                   value="{{ persistant_fields.name }}"
+                   value="{{ persistant_field_contents.name }}"
                    class="form-control"
                    id="exampleInputEmail1"
                    required>
-            <div class="invalid-feedback">{{ strings.name_field.invalid_feedback }}</div>
+            <div class="invalid-feedback">{{ strings.name_field.required_feedback }}</div>
         </div>
         <div class="mb-3">
             <label for="email" class="form-label">{{ strings.email_field.label }}</label>
             <input type="email"
                    name="email"
-                   value="{{ persistant_fields.email }}"
+                   value="{{ persistant_field_contents.email }}"
                    class="form-control"
                    id="email"
                    required>
-            <div class="invalid-feedback">{{ strings.email_field.invalid_feedback }}</div>
-        </div>
-        <div class="mb-3">
-            <label for="telefon" class="form-label">{{ strings.telefon_field_label }}</label>
-            <input type="text"
-                   name="telefon"
-                   value="{{ persistant_fields.telefon }}"
-                   class="form-control"
-                   id="telefon">
-        </div>
-        <div class="mb-5">
-            <label for="message" class="form-label">{{ strings.message_field.label }}</label>
-            <textarea name="message"
-                      rows="5"
-                      class="form-control"
-                      id="message"
-                      style="resize: none"
-                      required>{{ persistant_fields.message }}</textarea>
-            <div class="invalid-feedback">{{ strings.message_field.invalid_feedback }}</div>
+            <div class="invalid-feedback">{{ strings.email_field.required_feedback }}</div>
         </div>
 
-        <div class="mb-3">
-            <img src="data:image/png;base64,{{ captcha }}">
-        </div>
-        <div class="mb-3">
-            <label for="captcha_answer" class="form-label">{{ strings.captcha_field.label }}</label>
-            <input type="text"
-                   name="captcha_answer"
-                   class="form-control"
-                   id="captcha_answer"
-                   required>
-            <div class="invalid-feedback">{{ strings.captcha_field.invalid_feedback }}</div>
-        </div>
+        {% for custom_field in custom_fields %}
+            <div class="mb-3">
+                {% let value = persistant_field_contents.custom[loop.index0] %}
+                {% let required = custom_field.required_feedback.is_some() %}
 
-        {% if error_message.len() > 0 %}
-            <div class="alert alert-warning" role="alert">{{ error_message }}</div>
-        {% endif %}
+                <label for="{{ custom_field.id }}" class="form-label">{{ custom_field.label }}</label>
 
-        <div class="d-grid">
-            <button type="submit" class="btn btn-primary">{{ strings.submit }}</button>
-        </div>
-    </form>
+                {% match custom_field.field_type %}
+                {% when config::CustomFieldType::Text %}
+                <input type="text"
+                       class="form-control"
+                       name="{{ custom_field.id }}"
+                       id="{{ custom_field.id }}"
+                       value="{{ value }}"
+                       {% if required %}required{% endif %}>
+                {% when config::CustomFieldType::Textarea with { rows } %}
+                <textarea rows="{{ rows }}"
+                          style="resize: none"
+                          class="form-control"
+                          name="{{ custom_field.id }}"
+                          id="{{ custom_field.id }}"
+                          {% if required %}required{% endif %}>{{ value }}</textarea>
+            {% endmatch %}
+
+            {% match custom_field.required_feedback %}
+            {% when Some with (feedback) %}
+            <div class="invalid-feedback">{{ feedback }}</div>
+            {% when None %}
+        {% endmatch %}
+    </div>
+{% endfor %}
+
+<div class="mb-2 mt-4">
+    <img src="data:image/png;base64,{{ captcha }}">
+</div>
+<div class="mb-3">
+    <label for="captcha_answer" class="form-label">{{ strings.captcha_field.label }}</label>
+    <input type="text"
+           name="captcha_answer"
+           class="form-control"
+           id="captcha_answer"
+           required>
+    <div class="invalid-feedback">{{ strings.captcha_field.required_feedback }}</div>
+</div>
+
+{% if error_message.len() > 0 %}
+    <div class="alert alert-warning" role="alert">{{ error_message }}</div>
+{% endif %}
+
+<div class="d-grid">
+    <button type="submit" class="btn btn-primary">{{ strings.submit }}</button>
+</div>
+</form>
 {% endblock %}
 
 {% block scripts %}