From 8fb457d5639d11d5075d664001e98148e223f257 Mon Sep 17 00:00:00 2001
From: Joris
Date: Sat, 15 Jul 2023 10:09:30 +0200
Subject: Re synchronize deck if necessary between cards

---
 src/gui/mod.rs | 16 ++++++++++++++--
 src/main.rs    | 10 +++++++++-
 2 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/src/gui/mod.rs b/src/gui/mod.rs
index caf97f8..3abe238 100644
--- a/src/gui/mod.rs
+++ b/src/gui/mod.rs
@@ -2,10 +2,12 @@ pub mod message;
 pub mod question;
 pub mod util;
 
+use crate::sync;
 use crate::{db, space_repetition, util::time};
 use anyhow::Result;
 use crossterm::terminal;
 use rusqlite::Connection;
+use std::fs;
 use std::io::Stdout;
 use tui::{backend::CrosstermBackend, Terminal};
 
@@ -27,13 +29,22 @@ pub fn restore_terminal(term: &mut Term) -> Result<()> {
 }
 
 pub fn start(
-    conn: &Connection,
+    conn: &mut Connection,
     term: &mut Term,
+    deck_path: &str,
     deck_name: &str,
+    mut deck_last_sync: u64,
     hide_remaining: bool,
 ) -> Result<()> {
     loop {
-        let now = time::seconds_since_unix_epoch()?;
+        // Synchronize deck if necessary
+        let deck_last_update =
+            time::seconds_since_unix_epoch_of(fs::metadata(deck_path)?.modified()?)?;
+        if deck_last_update > deck_last_sync {
+            sync::run(conn, deck_path)?;
+            deck_last_sync = time::seconds_since_unix_epoch()?;
+        }
+
         let title = title(
             deck_name,
             db::count_available(conn).unwrap_or(0),
@@ -54,6 +65,7 @@ pub fn start(
             None => {
                 let message = match db::next_ready(conn) {
                     Some(ready) => {
+                        let now = time::seconds_since_unix_epoch()?;
                         let duration = time::pp_duration(ready - now);
                         format!("Prochaine carte disponible dans {duration}.")
                     }
diff --git a/src/main.rs b/src/main.rs
index ddc6edc..b18cb1a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -29,10 +29,18 @@ fn main() -> Result<()> {
     let deck_name = deck::pp_from_path(&deck_path).unwrap_or_else(|| "Deck".to_string());
 
     sync::run(&mut conn, &deck_path)?;
+    let deck_last_sync = util::time::seconds_since_unix_epoch()?;
 
     let mut term = gui::setup_terminal()?;
 
-    match gui::start(&conn, &mut term, &deck_name, args.hide_remaining) {
+    match gui::start(
+        &mut conn,
+        &mut term,
+        &deck_path,
+        &deck_name,
+        deck_last_sync,
+        args.hide_remaining,
+    ) {
         Ok(()) => (),
         Err(msg) => {
             // Show errors in TUI, otherwise they are hidden
-- 
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