Implement Purify (#1291)

* Implement purify

* Code review fixes

* Remove vitest import

* Update status-effect.ts

* Update status-effect.ts

---------

Co-authored-by: Benjamin Odom <bennybroseph@gmail.com>

src/data/move.ts

@@ -6,7 +6,7 @@ import { EncoreTag } from "./battler-tags";
 import { BattlerTagType } from "./enums/battler-tag-type";
 import { getPokemonMessage } from "../messages";
 import Pokemon, { AttackMoveResult, EnemyPokemon, HitResult, MoveResult, PlayerPokemon, PokemonMove, TurnMove } from "../field/pokemon";
-import { StatusEffect, getStatusEffectHealText } from "./status-effect";
+import { StatusEffect, getStatusEffectHealText, isNonVolatileStatusEffect, getNonVolatileStatusEffects} from "./status-effect";
 import { Type } from "./type";
 import * as Utils from "../utils";
 import { WeatherType } from "./weather";
@@ -6813,8 +6813,11 @@ export function initMoves() {
       .unimplemented(),
     new AttackMove(Moves.SMART_STRIKE, Type.STEEL, MoveCategory.PHYSICAL, 70, -1, 10, -1, 0, 7),
     new StatusMove(Moves.PURIFY, Type.POISON, -1, 20, -1, 0, 7)
-      .triageMove()
+      .condition(
-      .unimplemented(),
+        (user: Pokemon, target: Pokemon, move: Move) => isNonVolatileStatusEffect(user.status?.effect))
+      .attr(HealAttr, 0.5)
+      .attr(HealStatusEffectAttr, true, ...getNonVolatileStatusEffects())
+      .triageMove(),
     new AttackMove(Moves.REVELATION_DANCE, Type.NORMAL, MoveCategory.SPECIAL, 90, 100, 15, -1, 0, 7)
       .danceMove()
       .attr(MatchUserTypeAttr),

src/data/status-effect.ts

@@ -175,3 +175,27 @@ export function getRandomStatus(statusA: Status, statusB: Status): Status {
 
   return Utils.randIntRange(0, 2) ? statusA : statusB;
 }
+
+/**
+ * Gets all non volatile status effects
+ * @returns A list containing all non volatile status effects
+ */
+export function getNonVolatileStatusEffects():Array<StatusEffect> {
+  return [
+    StatusEffect.POISON,
+    StatusEffect.TOXIC,
+    StatusEffect.PARALYSIS,
+    StatusEffect.SLEEP,
+    StatusEffect.FREEZE,
+    StatusEffect.BURN
+  ];
+}
+
+/**
+ * Returns whether a statuss effect is non volatile.
+ * Non-volatile status condition is a status that remains after being switched out.
+ * @param status The status to check
+ */
+export function isNonVolatileStatusEffect(status: StatusEffect): boolean {
+  return getNonVolatileStatusEffects().includes(status);
+}