Load character in API as common function. Fix attribute editing.

src/routes/api.rs

@@ -5,6 +5,7 @@ use crate::models::proto::{cofd::*, Proto};
 use crate::models::users::User;
 use rocket_contrib::templates::Template;
 use serde::Serialize;
+use std::borrow::Cow;
 use std::collections::HashMap;
 
 pub(crate) fn routes() -> Vec<rocket::Route> {
@@ -18,6 +19,30 @@ pub(crate) fn routes() -> Vec<rocket::Route> {
     ]
 }
 
+/// Load the character belonging to the given user, as long as they're
+/// the owner of that character. Returns an error if user is not
+/// logged in, the owner of the character is not found, or the logged
+/// in user does not have the permission to access this character.
+async fn load_character(
+    conn: &TenebrousDbConn,
+    logged_in_user: Option<&User>,
+    owner: String,
+    character_id: i32,
+) -> Result<Character, Error> {
+    let logged_in_user = logged_in_user.ok_or(Error::NotLoggedIn)?;
+    let owner = conn.load_user(owner).await?.ok_or(Error::NotFound)?;
+    let character: Character = conn
+        .load_character(character_id)
+        .await?
+        .ok_or(Error::NotFound)?;
+
+    if logged_in_user != &owner {
+        return Err(Error::NoPermission);
+    }
+
+    Ok(character)
+}
+
 /// Protobuf-based REST endpoints for editing a character.
 mod cofd {
     use super::*;
@@ -49,29 +74,19 @@ mod cofd {
         conn: TenebrousDbConn,
         logged_in_user: Option<&User>,
     ) -> Result<&'a str, Error> {
-        let logged_in_user = logged_in_user.ok_or(Error::NotLoggedIn)?;
+        let mut character = load_character(&conn, logged_in_user, owner, character_id).await?;
-        let owner = conn.load_user(owner).await?.ok_or(Error::NotFound)?;
-        let mut character: Character = conn
-            .load_character(character_id)
-            .await?
-            .ok_or(Error::NotFound)?;
-
-        if logged_in_user != &owner {
-            return Err(Error::NoPermission);
-        }
-
         let mut sheet: CofdSheet = character.try_deserialize()?;
 
         match attr_update.name.to_lowercase().as_ref() {
-            "strength" => Ok(sheet.strength += attr_update.value),
+            "strength" => Ok(sheet.strength = attr_update.value),
-            "dexterity" => Ok(sheet.dexterity += attr_update.value),
+            "dexterity" => Ok(sheet.dexterity = attr_update.value),
-            "stamina" => Ok(sheet.stamina += attr_update.value),
+            "stamina" => Ok(sheet.stamina = attr_update.value),
-            "intelligence" => Ok(sheet.intelligence += attr_update.value),
+            "intelligence" => Ok(sheet.intelligence = attr_update.value),
-            "wits" => Ok(sheet.wits += attr_update.value),
+            "wits" => Ok(sheet.wits = attr_update.value),
-            "resolve" => Ok(sheet.resolve += attr_update.value),
+            "resolve" => Ok(sheet.resolve = attr_update.value),
-            "presence" => Ok(sheet.presence += attr_update.value),
+            "presence" => Ok(sheet.presence = attr_update.value),
-            "manipulation" => Ok(sheet.manipulation += attr_update.value),
+            "manipulation" => Ok(sheet.manipulation = attr_update.value),
-            "composure" => Ok(sheet.composure += attr_update.value),
+            "composure" => Ok(sheet.composure = attr_update.value),
             _ => Err(Error::InvalidInput),
         }?;