fix(pkgs/back): Use rocket to manage the configuration values

This reduces the amount of needed `unwraps`/`expects` and allows us to
streamline the parsing processes.

1 files changed, 34 insertions, 0 deletions

diff --git a/pkgs/by-name/ba/back/src/web/issue_show.rs b/pkgs/by-name/ba/back/src/web/issue_show.rs
new file mode 100644
index 0000000..638840e
--- /dev/null
+++ b/pkgs/by-name/ba/back/src/web/issue_show.rs
@@ -0,0 +1,34 @@
+// Back - An extremely simple git issue tracking system. Inspired by tvix's
+// panettone
+//
+// Copyright (C) 2024 Benedikt Peetz <benedikt.peetz@b-peetz.de>
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// This file is part of Back.
+//
+// You should have received a copy of the License along with this program.
+// If not, see <https://www.gnu.org/licenses/agpl.txt>.
+
+use std::fmt::Display;
+
+use gix::hash::Prefix;
+use rocket::request::FromParam;
+
+pub struct BackPrefix {
+    prefix: Prefix,
+}
+impl Display for BackPrefix {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        self.prefix.fmt(f)
+    }
+}
+
+impl<'a> FromParam<'a> for BackPrefix {
+    type Error = gix::hash::prefix::from_hex::Error;
+
+    fn from_param(param: &'a str) -> Result<Self, Self::Error> {
+        let prefix = Prefix::from_hex(param)?;
+
+        Ok(Self { prefix })
+    }
+}