create Path mod implementation

src/path.rs

@@ -0,0 +1,40 @@
+use std::error::Error;
+
+pub struct Path {
+    pub absolute: String,
+    pub directory: String,
+    pub file: String,
+}
+
+impl Path {
+    pub fn build(base: &str, pub_date: &str, mkdir: bool) -> Result<Path, Box<dyn Error>> {
+        use chrono::{DateTime, Datelike, Timelike};
+        use std::{fs::create_dir_all, path::MAIN_SEPARATOR};
+
+        let date_time = DateTime::parse_from_rfc2822(pub_date)?;
+
+        let directory = format!(
+            "{base}{MAIN_SEPARATOR}{:02}{MAIN_SEPARATOR}{:02}{MAIN_SEPARATOR}{:02}",
+            date_time.year(),
+            date_time.month(),
+            date_time.day()
+        );
+
+        let file = format!(
+            "{:02}-{:02}-{:02}.gmi",
+            date_time.hour(),
+            date_time.minute(),
+            date_time.second()
+        );
+
+        if mkdir {
+            create_dir_all(&directory)?;
+        }
+
+        Ok(Path {
+            absolute: format!("{directory}{MAIN_SEPARATOR}{file}"),
+            directory,
+            file,
+        })
+    }
+}