impls wealth updating

lootalot_db/src/lib.rs

@@ -6,8 +6,7 @@ extern crate serde_derive;
 
 use diesel::prelude::*;
 use diesel::r2d2::{self, ConnectionManager};
-// Convenience re-export, maybe DbApi should me move here instead ??
-pub use diesel::query_dsl::RunQueryDsl;
+use diesel::query_dsl::RunQueryDsl;
 
 mod models;
 mod schema;
@@ -101,13 +100,20 @@ impl<'q> AsPlayer<'q> {
         )
     }
     pub fn update_wealth(self, value: f32) -> ActionResult {
-        Ok(
-            false
-            // TODO:
-            // models::player::WealthUpdate::from_gp(self.id, value)
-            //    .save_changes(&conn)?;
-        )
-
+        use schema::players::dsl::*;
+        let current_wealth = players.find(self.id)
+                .select((cp, sp, gp, pp))
+                .first::<models::WealthUpdate>(self.conn)?;
+        // TODO: improve this
+        //       should be move inside a WealthUpdate method
+        let update =
+            models::WealthUpdate::from_gp(current_wealth.to_gp() + value);
+        diesel::update(players)
+            .filter(id.eq(self.id))
+            .set(&update)
+            .execute(self.conn)
+            // TODO: need to work out what this boolean REALLY means
+            .map(|r| match r { 1 => true, _ => false })
     }
     /// Put a claim on a specific item
     pub fn claim(self, item: i32) -> ActionResult {

lootalot_db/src/models/mod.rs

@@ -3,3 +3,4 @@ mod player;
 
 pub use item::Item;
 pub use player::Player;
+pub use player::WealthUpdate;

lootalot_db/src/models/player.rs

@@ -1,3 +1,4 @@
+use diesel::prelude::*;
 use crate::schema::players;
 use crate::DbConnection;
 
@@ -14,11 +15,31 @@ pub struct Player {
 }
 
 
-/// Wealth represented as a single fractionnal amount of gold pieces
-#[derive(Identifiable, AsChangeset)]
+/// Unpack a floating value in gold pieces to integer
+/// values of copper, silver, gold and platinum pieces
+///
+/// # Note
+///
+/// The conversion is slightly different than standard rules :
+/// ``` 1pp = 100gp = 1000sp = 10000 cp ```
+///
+fn unpack_gold_value(gold: f32) -> (i32, i32, i32, i32) {
+    let rest = (gold.fract() * 100.0).round() as i32;
+    let gold = gold.trunc() as i32;
+    let pp = gold / 100;
+    let gp = gold % 100;
+    let sp = rest / 10;
+    let cp = rest % 10;
+    (cp, sp, gp, pp)
+}
+
+/// Represent an update on a player's wealth
+///
+/// The values held here are the amount of pieces to add or
+/// substract to player wealth.
+#[derive(Queryable, AsChangeset, Debug)]
 #[table_name="players"]
-struct WealthUpdate {
-    id: i32,
+pub struct WealthUpdate {
     cp: i32,
     sp: i32,
     gp: i32,
@@ -27,10 +48,15 @@ struct WealthUpdate {
 
 impl WealthUpdate{
     /// Unpack individual pieces counts from gold value
-    fn from_gp(id: i32, gp: f32) -> Self {
-        // TODO: 0,01 pp = 1 gp = 10 sp = 100 cp
-        let (cp, sp, gp, pp) = (0,0,0,0);
-        Self { id, cp, sp, gp, pp }
+    pub fn from_gp(gp: f32) -> Self {
+        let (cp, sp, gp, pp) = unpack_gold_value(gp);
+        Self { cp, sp, gp, pp }
+    }
+
+    pub fn to_gp(&self) -> f32 {
+        let i = self.pp * 100 + self.gp;
+        let f = ( self.sp * 10 + self.cp ) as f32 / 100.0;
+        i as f32 + f
     }
 }
 

src/server.rs

@@ -62,6 +62,13 @@ pub(crate) fn serve() -> std::io::Result<()> {
                     db_call(pool, move |api| api.fetch_players())
                 }),
             )
+            .route(
+                "/update-wealth/{player_id}/{amount}",
+                web::get().to_async(move |pool: AppPool, data: web::Path<(i32, f32)>| {
+                    let (player, gold) = *data;
+                    db_call(pool, move |api| api.as_player(player).update_wealth(gold))
+                }),
+            )
             .route(
                 "/loot/{player_id}",
                 web::get().to_async(move |pool: AppPool, player_id: web::Path<i32>| {