add post_max_chars config option

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "mb"
-version = "0.1.2"
+version = "0.2.0"
 edition = "2024"
 license = "MIT"
 readme = "README.md"

src/config.rs

@@ -55,4 +55,8 @@ pub struct Config {
     /// Configure instance in the debug mode
     #[arg(long, default_value_t = false)]
     pub debug: bool,
+
+    /// Limit post max length to `n` chars (JS-less, `maxlength` attribute)
+    #[arg(long)]
+    pub post_max_chars: Option<usize>,
 }

src/main.rs

@@ -83,6 +83,7 @@ fn index(
             }).collect::<Vec<Post>>(),
             home: uri!(index(None::<&str>, None::<usize>, token)),
             version: env!("CARGO_PKG_VERSION"),
+            post_max_chars: config.post_max_chars,
             search,
             token
         },

templates/index.html.tera

@@ -2,7 +2,9 @@
 {% block content %}
     {% if token %}
         <form action="/submit" method="post">
-            <textarea name="message" placeholder="Enter your message..."></textarea>
+            <textarea name="message"
+                      placeholder="Enter your message..."
+                      {% if post_max_chars %}maxlength="{{ post_max_chars }}"{% endif %}></textarea>
             <input type="hidden" name="token" value="{{ token }}" />
             <input type="submit" value="Submit" />
         </form>