1 files changed, 55 insertions, 0 deletions
diff --git a/src/history.rs b/src/history.rs
new file mode 100644
index 0000000..9d29468
--- /dev/null
+++ b/src/history.rs
@@ -0,0 +1,55 @@
+use std::{
+    fs::File,
+    io::{BufRead, BufReader},
+    path::PathBuf,
+};
+
+use directories::ProjectDirs;
+
+use crate::Session;
+
+use super::SessionSource;
+
+#[derive(Debug)]
+pub struct History(PathBuf);
+
+impl History {
+    pub fn new(history_file: PathBuf) -> Self {
+        Self(history_file)
+    }
+
+    pub fn default_path() -> Option<PathBuf> {
+        ProjectDirs::from("", "", env!("CARGO_CRATE_NAME"))?
+            .state_dir()?
+            .join("history")
+            .into()
+    }
+}
+
+impl SessionSource for History {
+    type Error = std::io::Error;
+
+    type Iter = Vec<Session>;
+
+    fn sessions(&self) -> Result<Self::Iter, Self::Error> {
+        let mut sessions = Vec::new();
+
+        let file = File::open(&self.0)?;
+        for res in BufReader::new(file).lines() {
+            let entry = match res {
+                Ok(entry) => entry,
+                Err(err) => {
+                    tracing::warn!(?err, "Failed to read line from history file");
+                    continue;
+                }
+            };
+
+            match ron::from_str(&entry) {
+                Ok(session) => sessions.push(session),
+                Err(err) => tracing::warn!(?err, "Invalid history entry"),
+            }
+        }
+
+        Ok(sessions)
+    }
+}