Refactor user routes to include new endpoint for retrieving user by ID

- Removed the public modifier from `get_user` and `update_user` modules to encapsulate them within the module.
- Added a new route to the user router for fetching a user by their ID, enhancing the API's functionality.
- This change improves the user management capabilities by allowing retrieval of specific user details based on their unique identifier.

api/src/routes/rest/routes/organizations/mod.rs

@@ -0,0 +1,8 @@
+use axum::{routing::get, Router};
+
+mod users;
+
+pub fn router() -> Router {
+    Router::new()
+        .route("/:id/users", get(users::list_organization_users))
+}

api/src/routes/rest/routes/organizations/users.rs

@@ -0,0 +1,74 @@
+use anyhow::Result;
+use axum::{extract::Path, Extension, http::StatusCode};
+use diesel::{ExpressionMethods, QueryDsl, JoinOnDsl};
+use diesel_async::RunQueryDsl;
+use serde::{Deserialize, Serialize};
+use uuid::Uuid;
+
+use crate::{
+    database::{
+        enums::{UserOrganizationRole, UserOrganizationStatus},
+        lib::get_pg_pool,
+        models::User,
+        schema::{users, users_to_organizations},
+    },
+    routes::rest::ApiResponse,
+    utils::clients::sentry_utils::send_sentry_error,
+};
+
+#[derive(Serialize, Deserialize, Clone)]
+pub struct UserResponse {
+    pub id: Uuid,
+    pub name: Option<String>,
+    pub email: String,
+    pub role: UserOrganizationRole,
+    pub status: UserOrganizationStatus,
+}
+
+pub async fn list_organization_users(
+    Extension(user): Extension<User>,
+    Path(organization_id): Path<Uuid>,
+) -> Result<ApiResponse<Vec<UserResponse>>, (StatusCode, &'static str)> {
+    let users = match list_organization_users_handler(organization_id).await {
+        Ok(users) => users,
+        Err(e) => {
+            tracing::error!("Error listing organization users: {:?}", e);
+            send_sentry_error(&e.to_string(), Some(&user.id));
+            return Err((
+                StatusCode::INTERNAL_SERVER_ERROR,
+                "Error listing organization users",
+            ));
+        }
+    };
+
+    Ok(ApiResponse::JsonData(users))
+}
+
+async fn list_organization_users_handler(organization_id: Uuid) -> Result<Vec<UserResponse>> {
+    let mut conn = get_pg_pool().get().await?;
+
+    let users = users::table
+        .inner_join(users_to_organizations::table.on(users::id.eq(users_to_organizations::user_id)))
+        .select((
+            users::id,
+            users::email,
+            users::name.nullable(),
+            users_to_organizations::role,
+            users_to_organizations::status,
+        ))
+        .filter(users_to_organizations::organization_id.eq(organization_id))
+        .filter(users_to_organizations::deleted_at.is_null())
+        .load::<(Uuid, String, Option<String>, UserOrganizationRole, UserOrganizationStatus)>(&mut conn)
+        .await?;
+
+    Ok(users
+        .into_iter()
+        .map(|(id, email, name, role, status)| UserResponse {
+            id,
+            name,
+            email,
+            role,
+            status,
+        })
+        .collect())
+} 

api/src/routes/rest/routes/users/get_user_by_id.rs

@@ -0,0 +1,74 @@
+use anyhow::Result;
+use axum::{extract::Path, Extension};
+use diesel_async::RunQueryDsl;
+use serde::{Deserialize, Serialize};
+use uuid::Uuid;
+
+use crate::{
+    database::{
+        enums::{UserOrganizationRole, UserOrganizationStatus},
+        lib::get_pg_pool,
+        models::User,
+        schema::{users, users_to_organizations},
+    },
+    routes::rest::ApiResponse,
+    utils::clients::sentry_utils::send_sentry_error,
+};
+use axum::http::StatusCode;
+use diesel::{ExpressionMethods, JoinOnDsl, NullableExpressionMethods, QueryDsl};
+
+#[derive(Serialize, Deserialize, Clone)]
+pub struct UserResponse {
+    pub id: Uuid,
+    pub name: Option<String>,
+    pub email: String,
+    pub role: UserOrganizationRole,
+    pub status: UserOrganizationStatus,
+}
+
+pub async fn get_user_by_id(
+    Extension(user): Extension<User>,
+    Path(id): Path<Uuid>,
+) -> Result<ApiResponse<UserResponse>, (StatusCode, &'static str)> {
+    let user_info = match get_user_information(&id).await {
+        Ok(user_info) => user_info,
+        Err(e) => {
+            tracing::error!("Error getting user information: {:?}", e);
+            send_sentry_error(&e.to_string(), Some(&user.id));
+            return Err((
+                StatusCode::INTERNAL_SERVER_ERROR,
+                "Error getting user information",
+            ));
+        }
+    };
+
+    Ok(ApiResponse::JsonData(user_info))
+}
+
+pub async fn get_user_information(user_id: &Uuid) -> Result<UserResponse> {
+    let pg_pool = get_pg_pool();
+    let mut conn = pg_pool.get().await?;
+
+    let (user, (role, status)) = users::table
+        .inner_join(users_to_organizations::table.on(users::id.eq(users_to_organizations::user_id)))
+        .select((
+            (users::id, users::email, users::name.nullable()),
+            (users_to_organizations::role, users_to_organizations::status),
+        ))
+        .filter(users::id.eq(user_id))
+        .first::<(
+            (Uuid, String, Option<String>),
+            (UserOrganizationRole, UserOrganizationStatus),
+        )>(&mut conn)
+        .await?;
+
+    let (id, email, name) = user;
+
+    Ok(UserResponse {
+        id,
+        name,
+        email,
+        role,
+        status,
+    })
+}

api/src/routes/rest/routes/users/mod.rs

@@ -3,11 +3,13 @@ use axum::{
     Router,
 };
 
-pub mod get_user;
-pub mod update_user;
+mod get_user;
+mod get_user_by_id;
+mod update_user;
 
 pub fn router() -> Router {
     Router::new()
         .route("/", get(get_user::get_user))
         .route("/", put(update_user::update_user))
+        .route("/:id", get(get_user_by_id::get_user_by_id))
 }