1 files changed, 63 insertions, 0 deletions
diff --git a/src/configuration.rs b/src/configuration.rs
new file mode 100644
index 0000000..5995ffc
--- /dev/null
+++ b/src/configuration.rs
@@ -0,0 +1,63 @@
+use lexopt::{Parser, prelude::*};
+
+const DEFAULT_ADDRESS: &str = "127.0.0.1:6666";
+const DEFAULT_FREQUENCY: u64 = 150;
+const DEFAULT_MODULATION: u8 = 5;
+
+#[derive(Clone)]
+pub struct Configuration {
+    pub address: String,
+    pub frequency: u64,
+    pub modulation: u8,
+}
+
+impl Configuration {
+    pub fn new() -> Self {
+        let mut address = DEFAULT_ADDRESS.to_string();
+        let mut frequency = DEFAULT_FREQUENCY;
+        let mut modulation = DEFAULT_MODULATION;
+
+        let mut parser = Parser::from_env();
+
+        while let Ok(Some(argument)) = parser.next() {
+            match argument {
+                Short('l') | Long("listen-address") => {
+                    if let Ok(value) = parser.value().and_then(|v| v.parse()) {
+                        address = value;
+                    } else {
+                        eprintln!("Warning: Invalid listen address ignored.");
+                    }
+                }
+                Short('f') | Long("frequency") => {
+                    if let Ok(value) = parser.value().and_then(|v| v.parse()) {
+                        frequency = value;
+                    } else {
+                        eprintln!("Warning: Invalid frequency ignored.");
+                    }
+                }
+                Short('m') | Long("modulation") => {
+                    if let Ok(value) = parser.value().and_then(|v| v.parse()) {
+                        modulation = value;
+                    } else {
+                        eprintln!("Warning: Invalid modulation ignored.");
+                    }
+                }
+                Long("help") => {
+                    println!(
+                        "Usage: tomato-sauce [-l|--listen-address=LISTEN_ADDRESS] [-f|--frequency=NUMBER] [-m|--modulation=NUMBER]"
+                    );
+                    std::process::exit(0);
+                }
+                _ => {
+                    eprintln!("Warning: Unknown argument ignored");
+                }
+            }
+        }
+
+        Configuration {
+            address,
+            frequency,
+            modulation,
+        }
+    }
+}