Add config file support (#15)

1 files changed, 64 insertions, 0 deletions

diff --git a/src/settings.rs b/src/settings.rs
new file mode 100644
index 00000000..a4c9f8da
--- /dev/null
+++ b/src/settings.rs
@@ -0,0 +1,64 @@
+use std::path::PathBuf;
+
+use config::{Config, File};
+use directories::ProjectDirs;
+use eyre::{eyre, Result};
+use std::fs;
+
+#[derive(Debug, Deserialize)]
+pub struct LocalDatabase {
+    pub path: String,
+}
+
+#[derive(Debug, Deserialize)]
+pub struct Local {
+    pub server_address: String,
+    pub dialect: String,
+    pub db: LocalDatabase,
+}
+
+#[derive(Debug, Deserialize)]
+pub struct Settings {
+    pub local: Local,
+}
+
+impl Settings {
+    pub fn new() -> Result<Self> {
+        let config_dir = ProjectDirs::from("com", "elliehuxtable", "atuin").unwrap();
+        let config_dir = config_dir.config_dir();
+
+        fs::create_dir_all(config_dir)?;
+
+        let mut config_file = PathBuf::new();
+        config_file.push(config_dir);
+        config_file.push("config.toml");
+        let config_file = config_file.as_path();
+
+        // create the config file if it does not exist
+
+        let mut s = Config::new();
+
+        let db_path = ProjectDirs::from("com", "elliehuxtable", "atuin")
+            .ok_or_else(|| {
+                eyre!("could not determine db file location\nspecify one using the --db flag")
+            })?
+            .data_dir()
+            .join("history.db");
+
+        s.set_default("local.server_address", "https://atuin.elliehuxtable.com")?;
+        s.set_default("local.dialect", "us")?;
+        s.set_default("local.db.path", db_path.to_str())?;
+
+        if config_file.exists() {
+            s.merge(File::with_name(config_file.to_str().unwrap()))?;
+        }
+
+        // all paths should be expanded
+        let db_path = s.get_str("local.db.path")?;
+        let db_path = shellexpand::full(db_path.as_str())?;
+        s.set("local.db.path", db_path.to_string())?;
+
+        s.try_into()
+            .map_err(|e| eyre!("failed to deserialize: {}", e))
+    }
+}