From 96816a7b7847bd18cb63b912108cb13010bc07b1 Mon Sep 17 00:00:00 2001
From: manmen-mi <manmen.mi1375@gmail.com>
Date: Sat, 7 Dec 2024 21:40:18 +0900
Subject: [PATCH] try subcommand

---
 src/main.rs         |  9 +++++++--
 src/url_replacer.rs | 21 +++++++++++++++++++++
 2 files changed, 28 insertions(+), 2 deletions(-)
 create mode 100644 src/url_replacer.rs

diff --git a/src/main.rs b/src/main.rs
index cd97b1f7..6d835b4c 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -8,7 +8,7 @@ use std::{
 };
 use term::{clear_terminal, press_enter_prompt};
 
-use self::{app_state::AppState, dev::DevCommands, info_file::InfoFile};
+use self::{app_state::AppState, dev::DevCommands, info_file::InfoFile, url_replacer::UrlReplacer};
 
 mod app_state;
 mod cargo_toml;
@@ -22,6 +22,7 @@ mod list;
 mod run;
 mod term;
 mod watch;
+mod url_replacer;
 
 const CURRENT_FORMAT_VERSION: u8 = 1;
 
@@ -100,6 +101,8 @@ fn main() -> Result<ExitCode> {
         info_file.final_message.unwrap_or_default(),
     )?;
 
+    let replacer = UrlReplacer::new(&args.base_url);
+
     // Show the welcome message if the state file doesn't exist yet.
     if let Some(welcome_message) = info_file.welcome_message {
         match state_file_status {
@@ -184,7 +187,9 @@ fn main() -> Result<ExitCode> {
             if let Some(name) = name {
                 app_state.set_current_exercise_by_name(&name)?;
             }
-            println!("{}", app_state.current_exercise().hint);
+            
+            let hint = app_state.current_exercise().hint;
+            println!("{}", replacer.replace(hint));
         }
         // Handled in an earlier match.
         Some(Subcommands::Init | Subcommands::Dev(_)) => (),
diff --git a/src/url_replacer.rs b/src/url_replacer.rs
new file mode 100644
index 00000000..5b63e390
--- /dev/null
+++ b/src/url_replacer.rs
@@ -0,0 +1,21 @@
+pub struct UrlReplacer <'a> {
+    base_url: &'a Option<String>
+}
+
+const EN_BASE_URL: &str = "https://doc.rust-lang.org/book";
+
+impl <'a> UrlReplacer <'a> {
+    pub fn new(base_url: &'a Option<String>) -> Self {
+        Self {
+            base_url
+        }
+    }
+
+    pub fn replace(&self, hint: &str) -> String {
+        if let Some(base_url) = self.base_url {
+            hint.replace(EN_BASE_URL, base_url)
+        } else {
+            hint.to_owned()
+        }
+    }
+}