From 5da3990177a1516dd2990f7b6e1b417d1c622d92 Mon Sep 17 00:00:00 2001
From: Kjetil Orbekk <kjetil.orbekk@gmail.com>
Date: Sun, 9 Jul 2017 06:48:04 -0400
Subject: add: LinoError

---
 src/error.rs | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 src/error.rs

diff --git a/src/error.rs b/src/error.rs
new file mode 100644
index 0000000..649021e
--- /dev/null
+++ b/src/error.rs
@@ -0,0 +1,57 @@
+use std;
+use std::fmt;
+use std::convert::From;
+use rusqlite;
+use iron::{self, Response, IronError, status};
+use iron::headers::ContentType;
+use iron::modifiers::Header;
+
+#[derive(Debug)]
+pub enum LinoError {
+    DbError(rusqlite::Error),
+    NotFound(String),
+}
+
+pub type Result<T> = std::result::Result<T, LinoError>;
+
+impl fmt::Display for LinoError {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        match *self {
+            LinoError::DbError(ref err) => err.fmt(f),
+            LinoError::NotFound(ref x) => write!(f, "Could not find {}", x),
+        }
+    }
+}
+
+impl std::error::Error for LinoError {
+    fn description(&self) -> &str {
+        match *self {
+            LinoError::DbError(ref err) => err.description(),
+            LinoError::NotFound(_) => "not found",
+        }
+    }
+
+    fn cause(&self) -> Option<&std::error::Error> {
+        match *self {
+            LinoError::DbError(ref err) => Some(err),
+            LinoError::NotFound(_) => None,
+        }
+    }
+}
+
+impl From<rusqlite::Error> for LinoError {
+    fn from(err: rusqlite::Error) -> LinoError {
+        LinoError::DbError(err)
+    }
+}
+
+impl From<LinoError> for IronError {
+    fn from(err: LinoError) -> IronError {
+        let code = match err {
+            LinoError::NotFound(_) => status::NotFound,
+            _ => status::InternalServerError,
+        };
+        let description = format!("{:?}", err);
+        IronError::new(err, (code, Header(ContentType::html()), description))
+    }
+}
-- 
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