Add support for recording "TerrainState::In" and GameRecord version support system.

src/gamelog.rs

@@ -1,5 +1,8 @@
+use semver;
 use serde::Deserialize;
-use std::{fmt, fs::File};
+use std::{fmt, fs::File, u64};
+
+pub const GAMELOG_MIN_VER: semver::Version = semver::Version::new(0, 2, 0);
 
 #[derive(Debug, Deserialize)]
 pub struct LogFile(Vec<GameRecord>);
@@ -12,6 +15,20 @@ impl TryFrom<File> for LogFile {
     }
 }
 
+impl LogFile {
+    pub fn get_min_ver(&mut self) -> semver::Version {
+        let mut lowest = semver::Version::new(u64::MAX, u64::MAX, u64::MAX);
+
+        self.0.iter().for_each(|x| {
+            if x.version.cmp_precedence(&lowest).is_lt() {
+                lowest = x.version.clone()
+            }
+        });
+
+        lowest
+    }
+}
+
 #[derive(Debug, Deserialize)]
 struct GameRecord {
     version: semver::Version,
@@ -35,16 +52,16 @@ enum Quarter {
 
 #[derive(Debug, Deserialize)]
 enum TerrainState {
-    Distance(u8),
+    Yards(u8),
     GoalLine,
-    In,
+    Inches,
 }
 
 #[derive(Debug, Deserialize)]
 struct Play {
     action: Option<Action>,
     down: Down,
-    terrain: u8,
+    terrain: TerrainState,
 }
 
 enum DownError {

src/main.rs

@@ -2,7 +2,7 @@ mod calculator;
 mod gamelog;
 
 use clap::Parser;
-use gamelog::LogFile;
+use gamelog::{GAMELOG_MIN_VER, LogFile};
 use std::path::PathBuf;
 
 #[derive(Debug, Parser)]
@@ -12,9 +12,9 @@ struct Args {
         short,
         long,
         value_hint = clap::ValueHint::DirPath,
-        default_value = std::env::current_dir()
+        default_value = dbg!(format!("{}/templates/logfile.ron", std::env::current_dir()
             .expect("Failed to get current working dir.")
-            .into_os_string()
+            .into_os_string().to_str().unwrap()))
     )]
     logfile_path: PathBuf,
 }
@@ -22,7 +22,7 @@ struct Args {
 fn main() {
     let config = Args::parse();
 
-    let log: LogFile = LogFile::try_from(
+    let mut log: LogFile = LogFile::try_from(
         match std::fs::OpenOptions::new() // Defaults to setting all options false.
             .read(true) // Only need ensure that reading is possible.
             .open(&config.logfile_path.as_path())
@@ -32,4 +32,14 @@ fn main() {
         },
     )
     .expect("Failed to open game log file");
+
+    let log_ver = dbg!(log.get_min_ver());
+
+    if log_ver.cmp_precedence(&GAMELOG_MIN_VER).is_lt() {
+        panic!(
+            "Error: Log file GameRecord version deviates as low as {:?}, while minimum {:?} is required",
+            log_ver.to_string(),
+            GAMELOG_MIN_VER.to_string()
+        )
+    }
 }