Update GaCy-GO

internal/common/currency_wars_trials.go

@@ -0,0 +1,60 @@
+package common
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+)
+
+type CurrencyWarsTrialAvatar struct {
+	SpecialAvatarID    uint32
+	AvatarID           uint32
+	WorldLevel         uint32
+	Level              uint32
+	Promotion          uint32
+	Rank               uint32
+	EnhancedID         uint32
+	ExRankIDList       []uint32
+	EquipmentID        uint32
+	EquipmentLevel     uint32
+	EquipmentPromotion uint32
+	EquipmentRank      uint32
+}
+
+func (c *CurrencyWarsCatalog) TrialAvatar(specialID, avatarID, worldLevel uint32) (CurrencyWarsTrialAvatar, error) {
+	var result CurrencyWarsTrialAvatar
+	raw, e := ReadResourceFile("resources/CurrencyWarsTrialAvatars.json")
+	if e != nil {
+		return result, e
+	}
+	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"`
+		Entries  []CurrencyWarsTrialAvatar `json:"entries"`
+	}
+	if e = json.Unmarshal(raw, &r); e != nil {
+		return result, e
+	}
+	digest, e := hex.DecodeString(r.Capture)
+	if e != nil || len(digest) != sha256.Size || r.Format != 1 || r.Client != c.ClientVersion || r.Assembly != c.Provenance.GameAssemblySHA256 {
+		return result, fmt.Errorf("CW trial capture revision differs")
+	}
+	seen := map[[2]uint32]bool{}
+	for _, v := range r.Entries {
+		key := [2]uint32{v.SpecialAvatarID, v.WorldLevel}
+		if seen[key] || v.SpecialAvatarID == 0 || v.AvatarID == 0 || v.Level == 0 {
+			return result, fmt.Errorf("CW trial configuration invalid")
+		}
+		seen[key] = true
+		if v.SpecialAvatarID == specialID && v.AvatarID == avatarID && v.WorldLevel <= worldLevel && (result.SpecialAvatarID == 0 || v.WorldLevel > result.WorldLevel) {
+			result = v
+		}
+	}
+	if result.SpecialAvatarID == 0 {
+		return result, fmt.Errorf("CW special avatar %d world level %d has not been captured", specialID, worldLevel)
+	}
+	return result, nil
+}