Decouple core Yaak logic from Tauri (#354)

crates/yaak-models/src/error.rs

@@ -0,0 +1,52 @@
+use serde::{Serialize, Serializer};
+use thiserror::Error;
+
+#[derive(Error, Debug)]
+pub enum Error {
+    #[error("SQL error: {0}")]
+    SqlError(#[from] rusqlite::Error),
+
+    #[error("SQL Pool error: {0}")]
+    SqlPoolError(#[from] r2d2::Error),
+
+    #[error("Database error: {0}")]
+    Database(String),
+
+    #[error("IO error: {0}")]
+    Io(#[from] std::io::Error),
+
+    #[error("JSON error: {0}")]
+    JsonError(#[from] serde_json::Error),
+
+    #[error("Model not found: {0}")]
+    ModelNotFound(String),
+
+    #[error("Model serialization error: {0}")]
+    ModelSerializationError(String),
+
+    #[error("HTTP error: {0}")]
+    GenericError(String),
+
+    #[error("DB Migration Failed: {0}")]
+    MigrationError(String),
+
+    #[error("No base environment for {0}")]
+    MissingBaseEnvironment(String),
+
+    #[error("Multiple base environments for {0}. Delete duplicates before continuing.")]
+    MultipleBaseEnvironments(String),
+
+    #[error("unknown error")]
+    Unknown,
+}
+
+impl Serialize for Error {
+    fn serialize<S>(&self, serializer: S) -> std::result::Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        serializer.serialize_str(self.to_string().as_ref())
+    }
+}
+
+pub type Result<T> = std::result::Result<T, Error>;