logging

src/config.rs

@@ -12,6 +12,7 @@ pub struct Config {
     pub asset_version: String,
     pub smtp: Option<crate::state::SmtpConfig>,
     pub registration_enabled: bool,
+    pub frontend_log_level: String,
 }
 
 impl Config {
@@ -56,6 +57,7 @@ impl Config {
             asset_version: env_var("ASSET_VERSION", env!("CARGO_PKG_VERSION")),
             smtp,
             registration_enabled: env_bool("REGISTRATION_ENABLED", false)?,
+            frontend_log_level: env_log_level("FRONTEND_LOG_LEVEL", "warn")?,
         })
     }
 }
@@ -74,3 +76,11 @@ fn env_bool(name: &str, default: bool) -> Result<bool, Box<dyn std::error::Error
         Err(_) => Ok(default),
     }
 }
+
+fn env_log_level(name: &str, default: &str) -> Result<String, Box<dyn std::error::Error>> {
+    let value = env_var(name, default).trim().to_ascii_lowercase();
+    match value.as_str() {
+        "off" | "error" | "warn" | "info" | "debug" => Ok(value),
+        _ => Err(format!("{name} must be one of: off, error, warn, info, debug").into()),
+    }
+}