From 07b052797e273d4a85f2316e7ef9ca8677595dd1 Mon Sep 17 00:00:00 2001
From: Santo Cariotti <santo@dcariotti.me>
Date: Wed, 17 Mar 2021 09:57:56 +0100
Subject: feat: get commit by hash

---
 src/commit/models.rs | 24 +++++++++++++++++++++++-
 src/commit/routes.rs | 20 +++++++++++++++++++-
 2 files changed, 42 insertions(+), 2 deletions(-)

diff --git a/src/commit/models.rs b/src/commit/models.rs
index 6246511..c70ecf2 100644
--- a/src/commit/models.rs
+++ b/src/commit/models.rs
@@ -1,5 +1,5 @@
 use crate::db::get_client;
-use crate::errors::AppError;
+use crate::errors::{AppError, AppErrorType};
 
 use chrono::{DateTime, Local};
 use deadpool_postgres::Pool;
@@ -39,4 +39,26 @@ impl Commit {
 
         Ok(commits)
     }
+
+    // Find a commit that it has an hash equals to `hash`
+    pub async fn find(pool: Pool, hash: String) -> Result<Commit, AppError> {
+        let client = get_client(pool.clone()).await.unwrap();
+        let statement = client
+            .prepare("SELECT * FROM commit WHERE hash = $1")
+            .await?;
+
+        let commit = client
+            .query_opt(&statement, &[&hash])
+            .await?
+            .map(|row| Commit::from_row_ref(&row).unwrap());
+
+        match commit {
+            Some(commit) => Ok(commit),
+            None => Err(AppError {
+                error_type: AppErrorType::NotFoundError,
+                cause: None,
+                message: Some("Commit not found".to_string()),
+            }),
+        }
+    }
 }
diff --git a/src/commit/routes.rs b/src/commit/routes.rs
index bf04108..1b73c4f 100644
--- a/src/commit/routes.rs
+++ b/src/commit/routes.rs
@@ -19,10 +19,28 @@ async fn index(state: web::Data<AppState>) -> impl Responder {
     }
 }
 
+// Endpoint used for getting one commit
+async fn get_commit(
+    state: web::Data<AppState>,
+    hash: web::Path<(String,)>,
+) -> impl Responder {
+    info!(state.log, "GET /commit/{}/", &hash.0);
+
+    let result = Commit::find(state.pool.clone(), hash.0.clone()).await;
+
+    result
+        .map(|commit| HttpResponse::Ok().json(commit))
+        .map_err(|e| e)
+}
+
 /// Routes for commits
 pub fn config(cfg: &mut web::ServiceConfig) {
     cfg.service(
         web::scope("/commit")
-            .service(web::resource("{_:/?}").route(web::get().to(index))),
+            .service(web::resource("{_:/?}").route(web::get().to(index)))
+            .service(
+                web::resource("/{hash}{_:/?}")
+                    .route(web::get().to(get_commit)),
+            ),
     );
 }
-- 
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