set fare classes on aircraft w/ overrides (no admin ui yet)

app/Services/FareService.php

@@ -0,0 +1,70 @@
+<?php
+
+namespace App\Services;
+
+use App\Models\Aircraft;
+use App\Models\Fare;
+
+class FareService extends BaseService {
+
+    /**
+     * Attach a fare to an aircraft
+     *
+     * @param Aircraft $aircraft
+     * @param Fare     $fare
+     * @param array    set the price/cost/capacity
+     *
+     * @return Aircraft
+     */
+    public function set_for_aircraft(
+        Aircraft &$aircraft,
+        Fare &$fare,
+        array $override=[]
+    ) {
+        $aircraft->fares()->syncWithoutDetaching([$fare->id]);
+
+        # modify any pivot values?
+        if(count($override) > 0) {
+            $aircraft->fares()->updateExistingPivot($fare->id, $override);
+        }
+
+        $aircraft->save();
+        $aircraft = $aircraft->fresh();
+        return $aircraft;
+    }
+
+    /**
+     * return all the fares for an aircraft. check the pivot
+     * table to see if the price/cost/capacity has been overridden
+     * and return the correct amounts.
+     * @param Aircraft $aircraft
+     * @return Fare[]
+     */
+    public function get_for_aircraft(Aircraft &$aircraft)
+    {
+        $fares = [];
+        foreach($aircraft->fares as $fare) {
+            if(!is_null($fare->pivot->price)) {
+                $fare->price = $fare->pivot->price;
+            }
+
+            if(!is_null($fare->pivot->cost)) {
+                $fare->cost = $fare->pivot->cost;
+            }
+
+            if(!is_null($fare->pivot->capacity)) {
+                $fare->capacity = $fare->pivot->capacity;
+            }
+            array_push($fares, $fare);
+        }
+
+        return $fares;
+    }
+
+    public function delete_from_aircraft(Aircraft &$aircraft, Fare &$fare)
+    {
+        $aircraft->fares()->detach($fare->id);
+        $aircraft = $aircraft->fresh();
+        return $aircraft;
+    }
+}