From 58c572d77a90d6233f63271ab03360557da0641d Mon Sep 17 00:00:00 2001
From: Arijit Basu <sayanarijit@gmail.com>
Date: Sun, 11 Sep 2022 08:02:43 +0530
Subject: [PATCH] Fix directory explore scheduling

Fixes https://github.com/sayanarijit/xplr/issues/503
---
 Cargo.lock                   |  2 +-
 Cargo.toml                   |  2 +-
 docs/en/src/upgrade-guide.md |  4 ++--
 src/app.rs                   |  9 +++++++++
 src/directory_buffer.rs      |  5 +++++
 src/lua.rs                   | 12 ++++++------
 6 files changed, 24 insertions(+), 10 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index f993a17..12e235f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1203,7 +1203,7 @@ checksum = "c811ca4a8c853ef420abd8592ba53ddbbac90410fab6903b3e79972a631f7680"
 
 [[package]]
 name = "xplr"
-version = "0.19.2"
+version = "0.19.3"
 dependencies = [
  "ansi-to-tui",
  "anyhow",
diff --git a/Cargo.toml b/Cargo.toml
index 3d1db9e..eb2a06d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,7 +8,7 @@ path = './benches/criterion.rs'
 
 [package]
 name = 'xplr'
-version = '0.19.2'
+version = '0.19.3'
 authors = ['Arijit Basu <hi@arijitbasu.in>']
 edition = '2021'
 description = 'A hackable, minimal, fast TUI file explorer'
diff --git a/docs/en/src/upgrade-guide.md b/docs/en/src/upgrade-guide.md
index 0b4b189..61126a8 100644
--- a/docs/en/src/upgrade-guide.md
+++ b/docs/en/src/upgrade-guide.md
@@ -45,7 +45,7 @@ compatibility.
 
 ### Instructions
 
-#### [v0.18.0][46] -> [v0.19.2][47]
+#### [v0.18.0][46] -> [v0.19.3][47]
 
 - BREAKING: The builtin modes cannot be accessed using space separated names
   anymore. Use underscore separated mode names. For e.g.
@@ -387,4 +387,4 @@ Else do the following:
 [44]: https://github.com/sayanarijit/xplr/releases/tag/v0.16.4
 [45]: https://github.com/sayanarijit/xplr/releases/tag/v0.17.6
 [46]: https://github.com/sayanarijit/xplr/releases/tag/v0.18.0
-[47]: https://github.com/sayanarijit/xplr/releases/tag/v0.19.2
+[47]: https://github.com/sayanarijit/xplr/releases/tag/v0.19.3
diff --git a/src/app.rs b/src/app.rs
index ec906a4..669b3c1 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -1109,6 +1109,15 @@ impl App {
     }
 
     pub fn set_directory(mut self, dir: DirectoryBuffer) -> Result<Self> {
+        if self
+            .directory_buffer
+            .as_ref()
+            .map(|d| d.explored_at >= dir.explored_at)
+            .unwrap_or(false)
+        {
+            return Ok(self);
+        };
+
         self = self.add_last_focus(
             dir.parent.clone(),
             dir.focused_node().map(|n| n.relative_path.clone()),
diff --git a/src/directory_buffer.rs b/src/directory_buffer.rs
index 4d617c5..d6b7a42 100644
--- a/src/directory_buffer.rs
+++ b/src/directory_buffer.rs
@@ -1,4 +1,5 @@
 use crate::node::Node;
+use chrono::{DateTime, Utc};
 use serde::{Deserialize, Serialize};
 
 #[derive(Debug, Clone, Eq, PartialEq, Serialize, Deserialize)]
@@ -7,6 +8,9 @@ pub struct DirectoryBuffer {
     pub nodes: Vec<Node>,
     pub total: usize,
     pub focus: usize,
+
+    #[serde(skip)]
+    pub explored_at: DateTime<Utc>,
 }
 
 impl DirectoryBuffer {
@@ -17,6 +21,7 @@ impl DirectoryBuffer {
             nodes,
             total,
             focus,
+            explored_at: Utc::now(),
         }
     }
 
diff --git a/src/lua.rs b/src/lua.rs
index ca652ae..306604b 100644
--- a/src/lua.rs
+++ b/src/lua.rs
@@ -146,24 +146,24 @@ mod tests {
         assert!(check_version(VERSION, "foo path").is_ok());
 
         // Current release if OK
-        assert!(check_version("0.19.2", "foo path").is_ok());
+        assert!(check_version("0.19.3", "foo path").is_ok());
 
         // Prev major release is ERR
         // - Not yet
 
         // Prev minor release is ERR (Change when we get to v1)
-        assert!(check_version("0.18.2", "foo path").is_err());
+        assert!(check_version("0.18.3", "foo path").is_err());
 
         // Prev bugfix release is OK
-        assert!(check_version("0.19.1", "foo path").is_ok());
+        assert!(check_version("0.19.2", "foo path").is_ok());
 
         // Next major release is ERR
-        assert!(check_version("1.19.2", "foo path").is_err());
+        assert!(check_version("1.19.3", "foo path").is_err());
 
         // Next minor release is ERR
-        assert!(check_version("0.20.2", "foo path").is_err());
+        assert!(check_version("0.20.3", "foo path").is_err());
 
         // Next bugfix release is ERR (Change when we get to v1)
-        assert!(check_version("0.19.3", "foo path").is_err());
+        assert!(check_version("0.19.4", "foo path").is_err());
     }
 }