Start reorganizing code by creating files module

src/main.rs

@@ -1,13 +1,12 @@
-use std::fs;
 use std::path::PathBuf;
 
-use chrono::NaiveDate;
 use structopt::StructOpt;
 
-use crate::eval::entries::DateRange;
+use crate::files::Files;
 
 mod commands;
 mod eval;
+mod files;
 mod format;
 mod parse;
 
@@ -19,15 +18,7 @@ pub struct Opt {
 
 fn main() -> anyhow::Result<()> {
     let opt = Opt::from_args();
-    let content = fs::read_to_string(&opt.file)?;
-    let file = parse::parse(&opt.file, &content)?;
-    let entries = eval::eval(
-        &file,
-        DateRange::new(
-            NaiveDate::from_ymd(2021, 1, 1),
-            NaiveDate::from_ymd(2021, 12, 31),
-        ),
-    )?;
-    println!("{:#?}", entries);
+    let files = Files::load(&opt.file)?;
+    println!("{:#?}", files);
     Ok(())
 }