Decouple core Yaak logic from Tauri (#354)

crates/yaak-crypto/src/error.rs

@@ -0,0 +1,50 @@
+use serde::{Serialize, Serializer};
+use std::io;
+use thiserror::Error;
+
+#[derive(Error, Debug)]
+pub enum Error {
+    #[error(transparent)]
+    DbError(#[from] yaak_models::error::Error),
+
+    #[error("Keyring error: {0}")]
+    KeyringError(#[from] keyring::Error),
+
+    #[error("Missing workspace encryption key")]
+    MissingWorkspaceKey,
+
+    #[error("Incorrect workspace key")]
+    IncorrectWorkspaceKey,
+
+    #[error("Failed to decrypt workspace key: {0}")]
+    WorkspaceKeyDecryptionError(String),
+
+    #[error("Crypto IO error: {0}")]
+    IoError(#[from] io::Error),
+
+    #[error("Failed to encrypt data")]
+    EncryptionError,
+
+    #[error("Failed to decrypt data")]
+    DecryptionError,
+
+    #[error("Invalid encrypted data")]
+    InvalidEncryptedData,
+
+    #[error("Invalid key provided")]
+    InvalidHumanKey,
+
+    #[error("Encryption error: {0}")]
+    GenericError(String),
+}
+
+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>;