Update GaCy-GO

internal/common/currency_wars_monsters.go

@@ -0,0 +1,54 @@
+package common
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+)
+
+type CurrencyWarsMonsterRow struct {
+	ID    uint32 `json:"MonsterID"`
+	Tier  uint32 `json:"MonsterTier"`
+	Star1 uint32 `json:"Star1EliteGroup3"`
+	Star2 uint32 `json:"Star2EliteGroup3"`
+	Star3 uint32 `json:"Star3EliteGroup3"`
+	Star4 uint32 `json:"Star4EliteGroup3"`
+}
+
+// This is deliberately partial coverage: callers reject an absent native row.
+func LoadCurrencyWarsMonsters(c *CurrencyWarsCatalog) (map[uint32]CurrencyWarsMonsterRow, error) {
+	raw, err := ReadResourceFile("resources/CurrencyWarsMonsters.json")
+	if err != nil {
+		return nil, err
+	}
+	var r struct {
+		Format   uint32                   `json:"format_version"`
+		Client   string                   `json:"target_client_version"`
+		Assembly string                   `json:"target_assembly_sha256"`
+		Capture  string                   `json:"source_capture_sha256"`
+		Policy   string                   `json:"encounter_camp_policy"`
+		Entries  []CurrencyWarsMonsterRow `json:"entries"`
+	}
+	if err = json.Unmarshal(raw, &r); err != nil {
+		return nil, err
+	}
+	if c == nil || r.Format != 1 || r.Client != c.ClientVersion || r.Assembly != c.Provenance.GameAssemblySHA256 {
+		return nil, fmt.Errorf("CW monster revision differs")
+	}
+	digest, err := hex.DecodeString(r.Capture)
+	if err != nil || len(digest) != sha256.Size || r.Policy != "uniform_compatible_active_camp_same_tier" {
+		return nil, fmt.Errorf("CW monster provenance/policy missing")
+	}
+	rows := map[uint32]CurrencyWarsMonsterRow{}
+	for _, v := range r.Entries {
+		if _, dup := rows[v.ID]; dup || v.ID == 0 || v.Star1 == 0 || v.Star2 == 0 || v.Star3 == 0 || v.Star4 == 0 {
+			return nil, fmt.Errorf("CW monster identity/star group invalid")
+		}
+		rows[v.ID] = v
+	}
+	if len(rows) == 0 {
+		return nil, fmt.Errorf("CW monster capture empty")
+	}
+	return rows, nil
+}