From 9f8f49283d5932de91d189cd5a72309807ece00b Mon Sep 17 00:00:00 2001
From: Dennis Kobert <dennis@kobert.dev>
Date: Tue, 3 Mar 2020 16:16:03 +0100
Subject: Restructure the project

---
 src/errors.rs | 64 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 64 insertions(+)
 create mode 100644 src/errors.rs

(limited to 'src/errors.rs')

diff --git a/src/errors.rs b/src/errors.rs
new file mode 100644
index 0000000..d9893ba
--- /dev/null
+++ b/src/errors.rs
@@ -0,0 +1,64 @@
+use rocket::http::ContentType;
+use rocket::request::Request;
+use rocket::response::{self, Responder, Response};
+use rspotify::spotify::client::ApiError;
+use rspotify::spotify::oauth2::SpotifyOAuth;
+use std::io::Cursor;
+use std::sync::{MutexGuard, PoisonError};
+use tokio_postgres::error::Error as DbError;
+
+#[derive(Debug)]
+pub enum Error {
+    Postgres(DbError),
+    Spotify(ApiError),
+    Misc(String),
+}
+impl From<DbError> for Error {
+    fn from(error: DbError) -> Self {
+        Error::Postgres(error)
+    }
+}
+impl From<ApiError> for Error {
+    fn from(error: ApiError) -> Self {
+        Error::Spotify(error)
+    }
+}
+impl From<&str> for Error {
+    fn from(error: &str) -> Self {
+        Error::Misc(error.to_owned())
+    }
+}
+impl From<String> for Error {
+    fn from(error: String) -> Self {
+        Error::Misc(error)
+    }
+}
+impl<'a> From<PoisonError<MutexGuard<'a, HashMap<String, SpotifyOAuth>>>> for Error {
+    fn from(error: PoisonError<MutexGuard<'a, HashMap<String, SpotifyOAuth>>>) -> Self {
+        Error::Misc(format!("failed to lock the client mutex: {:?}", error))
+    }
+}
+impl<'a> From<PoisonError<MutexGuard<'a, postgres::Client>>> for Error {
+    fn from(error: PoisonError<MutexGuard<'a, postgres::Client>>) -> Self {
+        Error::Misc(format!("failed to lock the client mutex: {:?}", error))
+    }
+}
+impl<'a> From<std::option::NoneError> for Error {
+    fn from(error: std::option::NoneError) -> Self {
+        Error::Misc(format!("tried to unwrap none at: {:?}", error))
+    }
+}
+impl<'a> Responder<'a> for Error {
+    fn respond_to(self, _: &Request) -> response::Result<'a> {
+        let response = match self {
+            Error::Postgres(e) => format!("DB Error: {:?}", e),
+            Error::Spotify(e) => format!("Spotify Error: {:?}", e),
+            Error::Misc(e) => format!("Error: {}", e),
+        };
+        Response::build()
+            .header(ContentType::Plain)
+            .status(rocket::http::Status::raw(500))
+            .sized_body(Cursor::new(response))
+            .ok()
+    }
+}
-- 
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