feat: branch CRUD

3 files changed, 217 insertions, 0 deletions

diff --git a/src/branch/mod.rs b/src/branch/mod.rs
new file mode 100644
index 0000000..a0e1883
--- /dev/null
+++ b/src/branch/mod.rs
@@ -0,0 +1,2 @@
+pub mod models;
+pub mod routes;
diff --git a/src/branch/models.rs b/src/branch/models.rs
new file mode 100644
index 0000000..b631162
--- /dev/null
+++ b/src/branch/models.rs
@@ -0,0 +1,105 @@
+use crate::db::get_client;
+use crate::errors::{AppError, AppErrorType};
+
+use deadpool_postgres::Pool;
+use serde::{Deserialize, Serialize};
+use tokio_pg_mapper::FromTokioPostgresRow;
+use tokio_pg_mapper_derive::PostgresMapper;
+use uuid::Uuid;
+
+#[derive(Serialize, Deserialize, PostgresMapper)]
+#[pg_mapper(table = "branch")]
+/// Branch model
+pub struct Branch {
+    pub id: Uuid,
+    pub name: String,
+    pub repository_id: Uuid,
+    pub head: String,
+}
+
+impl Branch {
+    /// Find all branches
+    pub async fn find_all(pool: Pool) -> Result<Vec<Branch>, AppError> {
+        let client = get_client(pool.clone()).await.unwrap();
+        let statement = client.prepare("SELECT * FROM branch").await?;
+
+        let branches = client
+            .query(&statement, &[])
+            .await?
+            .iter()
+            .map(|row| Branch::from_row_ref(row).unwrap())
+            .collect::<Vec<Branch>>();
+
+        Ok(branches)
+    }
+
+    /// Find a branch with an `id` equals to an Uuid element
+    pub async fn find(pool: Pool, id: &Uuid) -> Result<Branch, AppError> {
+        let client = get_client(pool.clone()).await.unwrap();
+        let statement =
+            client.prepare("SELECT * FROM branch WHERE id = $1").await?;
+
+        let branch = client
+            .query_opt(&statement, &[&id])
+            .await?
+            .map(|row| Branch::from_row_ref(&row).unwrap());
+
+        match branch {
+            Some(branch) => Ok(branch),
+            None => Err(AppError {
+                error_type: AppErrorType::NotFoundError,
+                cause: None,
+                message: Some("Branch not found".to_string()),
+            }),
+        }
+    }
+
+    /// Find all branches of a repository
+    pub async fn find_by_repo(
+        pool: Pool,
+        repo: &Uuid,
+    ) -> Result<Vec<Branch>, AppError> {
+        let client = get_client(pool.clone()).await.unwrap();
+        let statement = client
+            .prepare("SELECT * FROM branch WHERE repository_id=$1")
+            .await?;
+
+        let branches = client
+            .query(&statement, &[&repo])
+            .await?
+            .iter()
+            .map(|row| Branch::from_row_ref(row).unwrap())
+            .collect::<Vec<Branch>>();
+
+        Ok(branches)
+    }
+
+    /// Find a branch and delete it, but before check if "Authorization"
+    /// matches with SECRET_KEY
+    pub async fn delete(pool: Pool, id: &Uuid) -> Result<Branch, AppError> {
+        let client = get_client(pool.clone()).await.unwrap();
+        let statement = client
+            .prepare(
+                "
+                DELETE FROM branch
+                WHERE id=$1
+                RETURNING *
+                ",
+            )
+            .await?;
+
+        let branch = client
+            .query_opt(&statement, &[&id])
+            .await?
+            .map(|row| Branch::from_row_ref(&row).unwrap());
+
+        match branch {
+            Some(branch) => Ok(branch),
+            None => Err(AppError {
+                error_type: AppErrorType::NotFoundError,
+                cause: None,
+                message: Some("Branch not found".to_string()),
+            }),
+        }
+    }
+}
diff --git a/src/branch/routes.rs b/src/branch/routes.rs
new file mode 100644
index 0000000..e46d3ad
--- /dev/null
+++ b/src/branch/routes.rs
@@ -0,0 +1,110 @@
+use crate::branch::models::Branch;
+use crate::config::AppState;
+use crate::errors::{AppError, AppErrorResponse, AppErrorType};
+use crate::helpers::uuid_from_string;
+
+use actix_web::http::header;
+use actix_web::{web, HttpRequest, HttpResponse, Responder};
+use slog::info;
+use std::env;
+use uuid::Uuid;
+
+/// Endpoint used for getting all commits
+async fn index(state: web::Data<AppState>) -> impl Responder {
+    info!(state.log, "GET /branch/");
+    let result = Branch::find_all(state.pool.clone()).await;
+
+    match result {
+        Ok(branches) => HttpResponse::Ok().json(branches),
+        _ => HttpResponse::BadRequest().json(AppErrorResponse {
+            detail: "Error trying to read all branches from database"
+                .to_string(),
+        }),
+    }
+}
+
+// Endpoint used for getting branches of a repository
+async fn get_repo_branch(
+    state: web::Data<AppState>,
+    repo: web::Path<(String,)>,
+) -> impl Responder {
+    let uuid: Uuid = uuid_from_string(&repo.0);
+    info!(state.log, "GET /branch/repo/{}/", &uuid);
+
+    let result = Branch::find_by_repo(state.pool.clone(), &uuid).await;
+
+    result
+        .map(|branches| HttpResponse::Ok().json(branches))
+        .map_err(|e| e)
+}
+
+/// Endpoint used for retrieve a repository that matches with an `id`.
+/// It is a String, casted in an Uuid format.
+async fn get_branch(
+    state: web::Data<AppState>,
+    id: web::Path<(String,)>,
+) -> impl Responder {
+    let uuid: Uuid = uuid_from_string(&id.0);
+
+    let result = Branch::find(state.pool.clone(), &uuid).await;
+    info!(state.log, "GET /branch/{}/", id.0);
+
+    // `map_err` is also used when repo is not found
+    result
+        .map(|repo| HttpResponse::Ok().json(repo))
+        .map_err(|e| e)
+}
+
+/// Endpoint used for delete branch.
+/// It uses a SECRET_KEY used like an API key
+async fn delete_branch(
+    req: HttpRequest,
+    state: web::Data<AppState>,
+    id: web::Path<(String,)>,
+) -> impl Responder {
+    let uuid: Uuid = uuid_from_string(&id.0);
+    match req.headers().get(header::AUTHORIZATION) {
+        Some(x)
+            if x.to_str().unwrap()
+                != env::var("SECRET_KEY").unwrap_or("".to_string()) =>
+        {
+            info!(state.log, "DELETE /branch/{}/ 401", id.0);
+            return Err(AppError {
+                error_type: AppErrorType::AuthorizationError,
+                message: Some(
+                    "You must provide a valid Authorization".to_string(),
+                ),
+                cause: None,
+            });
+        }
+        Some(_) => {}
+        None => {
+            info!(state.log, "DELETE /branch/{}/ 400", id.0);
+            return Ok(HttpResponse::BadRequest().body(""));
+        }
+    };
+
+    let result = Branch::delete(state.pool.clone(), &uuid).await;
+    info!(state.log, "DELETE /branch/{}/", id.0);
+
+    result
+        .map(|_| HttpResponse::NoContent().body(""))
+        .map_err(|e| e)
+}
+
+/// Routes for branches
+pub fn config(cfg: &mut web::ServiceConfig) {
+    cfg.service(
+        web::scope("/branch")
+            .service(web::resource("{_:/?}").route(web::get().to(index)))
+            .service(
+                web::resource("/repo/{repo_id}{_:/?}")
+                    .route(web::get().to(get_repo_branch)),
+            )
+            .service(
+                web::resource("/{id}{_:/?}")
+                    .route(web::get().to(get_branch))
+                    .route(web::delete().to(delete_branch)),
+            ),
+    );
+}