Update GaCy-GO

internal/common/aa_round_selection.go

@@ -0,0 +1,111 @@
+package common
+
+import (
+	"encoding/json"
+	"fmt"
+)
+
+const aaRoundSelectionKey = "aa_round_selection"
+
+type AARoundSelection struct {
+	PeakGroupID   uint32 `json:"peak_group_id"`
+	ClientVersion string `json:"client_version"`
+}
+
+func SetAARoundSelection(peakGroupID uint32) (*AARoundSelection, error) {
+	catalog, err := LoadMonsterSettingsCatalog()
+	if err != nil {
+		return nil, err
+	}
+	valid := false
+	for _, group := range catalog.Modes["aa"] {
+		if group.ID == peakGroupID {
+			valid = true
+			break
+		}
+	}
+	if !valid {
+		return nil, fmt.Errorf("AA round %d is not present in this Client's resources", peakGroupID)
+	}
+	cfg, err := LoadRuntimeConfig()
+	if err != nil {
+		return nil, err
+	}
+	selection := &AARoundSelection{
+		PeakGroupID:   peakGroupID,
+		ClientVersion: cfg.ClientVersion,
+	}
+	if err := updateAARoundSelection(selection); err != nil {
+		return nil, err
+	}
+	return selection, nil
+}
+
+// ReadAARoundSelection is read-only. The selected round remains active until
+// Srtool changes or clears it, or the configured Client version changes.
+func ReadAARoundSelection() (*AARoundSelection, error) {
+	cfg, err := LoadRuntimeConfig()
+	if err != nil {
+		return nil, err
+	}
+	root, err := readCurrencyWarsPersistentRoot()
+	if err != nil {
+		return nil, err
+	}
+	return activeAARoundSelection(root, cfg), nil
+}
+
+func ClearAARoundSelection() error {
+	persistentWriteMu.Lock()
+	defer persistentWriteMu.Unlock()
+	unlock, err := lockPersistentFile()
+	if err != nil {
+		return err
+	}
+	defer unlock()
+	root, err := readCurrencyWarsPersistentRoot()
+	if err != nil {
+		return err
+	}
+	_, hasRound := root[aaRoundSelectionKey]
+	_, hasLegacyRoom := root["aa_room_selection"]
+	if !hasRound && !hasLegacyRoom {
+		return nil
+	}
+	delete(root, aaRoundSelectionKey)
+	delete(root, "aa_room_selection")
+	return writeJSONAtomic("persistent", root)
+}
+
+func updateAARoundSelection(selection *AARoundSelection) error {
+	raw, err := json.Marshal(selection)
+	if err != nil {
+		return err
+	}
+	persistentWriteMu.Lock()
+	defer persistentWriteMu.Unlock()
+	unlock, err := lockPersistentFile()
+	if err != nil {
+		return err
+	}
+	defer unlock()
+	root, err := readCurrencyWarsPersistentRoot()
+	if err != nil {
+		return err
+	}
+	delete(root, "aa_room_selection")
+	root[aaRoundSelectionKey] = raw
+	return writeJSONAtomic("persistent", root)
+}
+
+func activeAARoundSelection(root map[string]json.RawMessage, cfg RuntimeConfig) *AARoundSelection {
+	raw, exists := root[aaRoundSelectionKey]
+	if !exists {
+		return nil
+	}
+	var selection AARoundSelection
+	if json.Unmarshal(raw, &selection) != nil || selection.PeakGroupID == 0 || selection.ClientVersion != cfg.ClientVersion {
+		return nil
+	}
+	return &selection
+}