Refactor ProductionPlan to use f64 for money: Updated the money field in ProductionPlan from i32 to f64 to accommodate decimal values from the database. Adjusted related calculations in DirectorWorker to handle floating-point arithmetic for production costs and money management, ensuring accurate financial computations.

src/worker/director.rs

@@ -19,7 +19,7 @@ struct Director {
 #[derive(Debug, Clone)]
 struct ProductionPlan {
     falukant_user_id: i32,
-    money: i32,
+    money: f64,
     certificate: i32,
     branch_id: i32,
     product_id: i32,
@@ -369,7 +369,9 @@ impl DirectorWorker {
     fn map_row_to_production_plan(row: &Row) -> Option<ProductionPlan> {
         Some(ProductionPlan {
             falukant_user_id: row.get("falukant_user_id")?.parse().ok()?,
-            money: row.get("money")?.parse().ok()?,
+            // money kommt in der DB typischerweise als Dezimalzahl (z.B. "96284894.40").
+            // Daher als f64 parsen; bei Parsefehlern den Plan verwerfen.
+            money: row.get("money")?.parse::<f64>().ok()?,
             certificate: row.get("certificate")?.parse().ok()?,
             branch_id: row.get("branch_id")?.parse().ok()?,
             product_id: row.get("product_id")?.parse().ok()?,
@@ -389,30 +391,29 @@ impl DirectorWorker {
             return Ok(());
         }
 
-        let free_capacity =
-            plan.stock_size - plan.used_in_stock - plan.running_productions;
+        let free_capacity = plan.stock_size - plan.used_in_stock - plan.running_productions;
 
-        let one_piece_cost = plan.certificate * 6;
-        let max_money_production = if one_piece_cost > 0 {
-            plan.money / one_piece_cost
+        // Stückkosten monetär berechnen. Da money ein f64 ist, arbeiten wir hier ebenfalls
+        // mit Gleitkomma und runden erst am Ende auf eine ganze Stückzahl ab.
+        let one_piece_cost = (plan.certificate * 6) as f64;
+        let max_money_production: i32 = if one_piece_cost > 0.0 {
+            // Anzahl Stück, die sich mit dem verfügbaren Geld finanzieren lassen
+            (plan.money / one_piece_cost).floor() as i32
         } else {
             0
         };
 
-        let to_produce = free_capacity
-            .min(max_money_production)
-            .min(300)
-            .max(0);
+        let to_produce = free_capacity.min(max_money_production).min(300).max(0);
 
         if to_produce < 1 {
             return Ok(());
         }
 
-        let production_cost = to_produce * one_piece_cost;
+        let production_cost = to_produce as f64 * one_piece_cost;
 
         if let Err(err) = self.base.change_falukant_user_money(
             plan.falukant_user_id,
-            -(production_cost as f64),
+            -production_cost,
             "director starts production",
         ) {
             eprintln!(