From d0f2b6eeb53567bc8a39bea431eb23d19aeed013 Mon Sep 17 00:00:00 2001
From: Kurt <kaphotics@gmail.com>
Date: Fri, 4 Mar 2022 22:33:53 -0800
Subject: [PATCH] Add .CurrentLevel=$suggest for min legal level

---
 PKHeX.Core/Editing/Bulk/BatchMods.cs          |  1 +
 .../Bulk/Suggestion/BatchModifications.cs     |  6 ++++
 .../Information/EncounterSuggestion.cs        | 32 +++++++++++++++++++
 3 files changed, 39 insertions(+)

diff --git a/PKHeX.Core/Editing/Bulk/BatchMods.cs b/PKHeX.Core/Editing/Bulk/BatchMods.cs
index 00100ac34..bc711c100 100644
--- a/PKHeX.Core/Editing/Bulk/BatchMods.cs
+++ b/PKHeX.Core/Editing/Bulk/BatchMods.cs
@@ -41,6 +41,7 @@ namespace PKHeX.Core
             new ComplexSuggestion(nameof(PKM.RelearnMoves), (_, value, info) => BatchModifications.SetSuggestedRelearnData(info, value)),
             new ComplexSuggestion(PROP_RIBBONS, (_, value, info) => BatchModifications.SetSuggestedRibbons(info, value)),
             new ComplexSuggestion(nameof(PKM.Met_Location), (_, _, info) => BatchModifications.SetSuggestedMetData(info)),
+            new ComplexSuggestion(nameof(PKM.CurrentLevel), (_, _, info) => BatchModifications.SetMinimumCurrentLevel(info)),
             new ComplexSuggestion(PROP_CONTESTSTATS, p => p is IContestStatsMutable, (_, value, info) => BatchModifications.SetContestStats(info.Entity, info.Legality.EncounterMatch, value)),
             new ComplexSuggestion(PROP_MOVEMASTERY, (_, value, info) => BatchModifications.SetSuggestedMasteryData(info, value)),
         };
diff --git a/PKHeX.Core/Editing/Bulk/Suggestion/BatchModifications.cs b/PKHeX.Core/Editing/Bulk/Suggestion/BatchModifications.cs
index 2a3fae00a..f9b8568ef 100644
--- a/PKHeX.Core/Editing/Bulk/Suggestion/BatchModifications.cs
+++ b/PKHeX.Core/Editing/Bulk/Suggestion/BatchModifications.cs
@@ -80,6 +80,12 @@ namespace PKHeX.Core
             return ModifyResult.Modified;
         }
 
+        public static ModifyResult SetMinimumCurrentLevel(BatchInfo info)
+        {
+            var result = EncounterSuggestion.IterateMinimumCurrentLevel(info.Entity, info.Legal);
+            return result ? ModifyResult.Modified : ModifyResult.Filtered;
+        }
+
         /// <summary>
         /// Sets the provided moves in a random order.
         /// </summary>
diff --git a/PKHeX.Core/Legality/Encounters/Information/EncounterSuggestion.cs b/PKHeX.Core/Legality/Encounters/Information/EncounterSuggestion.cs
index b44aef585..852b30d8f 100644
--- a/PKHeX.Core/Legality/Encounters/Information/EncounterSuggestion.cs
+++ b/PKHeX.Core/Legality/Encounters/Information/EncounterSuggestion.cs
@@ -115,6 +115,38 @@ namespace PKHeX.Core
             return startLevel;
         }
 
+        public static bool IterateMinimumCurrentLevel(PKM pk, bool isLegal, int max = 100)
+        {
+            var original = pk.CurrentLevel;
+            var originalEXP = pk.EXP;
+            if (isLegal)
+            {
+                if (original == 1)
+                    return false;
+                max = original - 1;
+            }
+
+            for (int i = max; i != 0; i--)
+            {
+                pk.CurrentLevel = i;
+                var la = new LegalityAnalysis(pk);
+                var valid = la.Valid;
+                if (valid)
+                    continue;
+
+                var revert = Math.Min(100, i + 1);
+                if (revert == original)
+                {
+                    pk.EXP = originalEXP;
+                    return false;
+                }
+
+                pk.CurrentLevel = revert;
+                return true;
+            }
+            return true; // 1
+        }
+
         /// <summary>
         /// Gets the suggested <see cref="PKM.Met_Level"/> based on a baseline <see cref="minLevel"/> and the <see cref="pkm"/>'s current moves.
         /// </summary>