package sdkserver

import (
	"fmt"
	"math"

	"gac-hkrpg-go/internal/common"
)

// Final packets omit detailed statistics on this Client. Attach the native
// snapshot only to an already received result with the same counters and team.
// Keep the server's outcome, scene identity and monster analysis.
func saveFinalBattleDetails(details *common.BattleReport) error {
	base, err := common.LoadLatestBattleReport()
	if err != nil {
		return fmt.Errorf("completed battle result is not available yet")
	}
	if details == nil || details.TotalBattleTurns != base.TotalBattleTurns ||
		math.Abs(details.CostTime-base.CostTime) > 0.001 ||
		(details.StageID != 0 && details.StageID != base.StageID) ||
		(details.BattleID != 0 && details.BattleID != base.BattleID) ||
		len(details.Avatars) != len(base.Avatars) {
		return fmt.Errorf("native statistics do not match the completed battle")
	}
	ids := make(map[uint32]bool, len(base.Avatars))
	slots := make(map[uint32]*uint32, len(base.Avatars))
	for _, a := range base.Avatars {
		if a != nil {
			ids[a.AvatarID] = true
			slots[a.AvatarID] = a.Slot
		}
	}
	for _, a := range details.Avatars {
		if a == nil || !ids[a.AvatarID] {
			return fmt.Errorf("native statistics team does not match the completed battle")
		}
		delete(ids, a.AvatarID)
		if a.Slot == nil {
			a.Slot = slots[a.AvatarID]
		}
	}
	if len(ids) != 0 {
		return fmt.Errorf("native statistics team is incomplete")
	}
	base.Avatars = details.Avatars
	base.TeamTotalDamage, base.TeamTotalHeal, base.TeamTotalShield = details.TeamTotalDamage, details.TeamTotalHeal, details.TeamTotalShield
	return common.SaveBattleReport(base)
}