package gameserver

import (
	"gac-hkrpg-go/internal/common"
	goproto "gac-hkrpg-go/protocol/proto"
)

// Keep resource defaults immutable: saved values belong to the player session.
func (s *Session) sceneGroupProperties(floor, group uint32, rules map[string]common.GroupPropertyRule) map[string]int32 {
	values := make(map[string]int32, len(rules))
	player := s.JSON()
	for name, rule := range rules {
		value := rule.DefaultValue
		if player != nil {
			if saved, ok := player.SceneGroupProperties[floor][group][name]; ok && saved >= rule.MinValue && saved <= rule.MaxValue {
				value = saved
			}
		}
		values[name] = value
	}
	return values
}

func init() {
	handle("UpdateGroupProperty", func(s *Session, req *goproto.UpdateGroupPropertyCsReq, rsp *goproto.UpdateGroupPropertyScRsp) error {
		// PearlSR 005d2c12 services/scene.zig acknowledges these named fields.
		// The sole int32 request field (15) is treated as the new value, constrained
		// by the Client GroupPropertyConfig. Obfuscated response values stay unset,
		// as in the reference; their old/new semantics have not been verified.
		rsp.FloorId = req.FloorId
		rsp.GroupId = req.GroupId
		rsp.DimensionId = req.DimensionId
		rsp.HMELFPDPCFC = req.HMELFPDPCFC
		p := s.JSON()
		if p == nil || req.FloorId != s.CurrentSceneFloor || s.ChallengeRun != nil {
			rsp.Retcode = uint32(goproto.Retcode_RET_FAIL)
			return nil
		}
		if _, active := CURRENT_BATTLE.Load(s.Token); active {
			rsp.Retcode = uint32(goproto.Retcode_RET_FAIL)
			return nil
		}
		res, err := common.GameRes()
		if err != nil {
			return err
		}
		entry := findEntryForFloor(res, req.FloorId)
		_, cfg, ok := firstSceneOfEntry(res, entry)
		if !ok || req.DimensionId != cfg.DimensionID {
			rsp.Retcode = uint32(goproto.Retcode_RET_NOT_CORRECT_GROUP_PROPERTY_NAME)
			return nil
		}
		rule, ok := cfg.GroupProperties[req.GroupId][req.HMELFPDPCFC]
		if !ok || req.OLBEPIBLDBD < rule.MinValue || req.OLBEPIBLDBD > rule.MaxValue {
			rsp.Retcode = uint32(goproto.Retcode_RET_NOT_CORRECT_GROUP_PROPERTY_NAME)
			return nil
		}
		if p.SceneGroupProperties == nil {
			p.SceneGroupProperties = map[uint32]map[uint32]map[string]int32{}
		}
		if p.SceneGroupProperties[req.FloorId] == nil {
			p.SceneGroupProperties[req.FloorId] = map[uint32]map[string]int32{}
		}
		if p.SceneGroupProperties[req.FloorId][req.GroupId] == nil {
			p.SceneGroupProperties[req.FloorId][req.GroupId] = map[string]int32{}
		}
		values := p.SceneGroupProperties[req.FloorId][req.GroupId]
		previous, existed := values[req.HMELFPDPCFC]
		values[req.HMELFPDPCFC] = req.OLBEPIBLDBD
		if err := p.SavePersistentChecked(); err != nil {
			if existed {
				values[req.HMELFPDPCFC] = previous
			} else {
				delete(values, req.HMELFPDPCFC)
			}
			return err
		}
		SceneDebugLog("GROUP_PROPERTY floor=%d group=%d property=%s value=%d", req.FloorId, req.GroupId, req.HMELFPDPCFC, req.OLBEPIBLDBD)
		return nil
	})
}