package gameserver

import (
	"encoding/json"
	"fmt"
	"gac-hkrpg-go/internal/common"
	pb "gac-hkrpg-go/protocol/proto"
	"google.golang.org/protobuf/proto"
	"math"
)

func cwSelectInvestment(catalog *common.CurrencyWarsCatalog, run *pb.MPIMAEMCEFH, id uint32) (*pb.GridFightSyncUpdateResultScNotify, error) {
	pending := run.FMIGOKIDKJL
	if pending == nil || pending.GetIBCHMBNIPLK() == nil {
		return nil, fmt.Errorf("CW investment not pending")
	}
	offered := false
	for _, v := range pending.GetIBCHMBNIPLK().CEBFFDFMKGK {
		offered = offered || v.AugmentId == id
	}
	if !offered || id == 0 {
		return nil, fmt.Errorf("CW investment not offered")
	}
	raw, err := common.ReadResourceFile("resources/CurrencyWarsInvestmentChoices.json")
	if err != nil {
		return nil, err
	}
	var resource struct {
		Format   uint32 `json:"format_version"`
		Client   string `json:"target_client_version"`
		Assembly string `json:"target_assembly_sha256"`
		Choices  []struct {
			ID        uint32 `json:"augment_id"`
			GoldDelta int64  `json:"gold_delta"`
			Info      []byte `json:"augment_info_wire"`
		} `json:"choices"`
	}
	if err = json.Unmarshal(raw, &resource); err != nil {
		return nil, err
	}
	if resource.Format != 1 || resource.Client != catalog.ClientVersion || resource.Assembly != catalog.Provenance.GameAssemblySHA256 {
		return nil, fmt.Errorf("CW investment resource revision differs")
	}
	player, _, _ := cwComponents(run)
	if player == nil {
		return nil, fmt.Errorf("CW player missing")
	}
	var augments *pb.KGFNICBCMOA
	for _, c := range run.NAGDJGMMCBE {
		if v := c.GetLLDBOIANGDN(); v != nil {
			augments = v
		}
	}
	if augments == nil {
		return nil, fmt.Errorf("CW investment container missing")
	}
	for _, v := range augments.SyncAugmentInfo {
		if v.AugmentId == id {
			return nil, fmt.Errorf("CW investment already owned")
		}
	}
	var info *pb.PPGEBEBPMJC
	var delta int64
	for _, choice := range resource.Choices {
		if choice.ID == id {
			if info != nil {
				return nil, fmt.Errorf("CW investment outcome duplicated")
			}
			info = new(pb.PPGEBEBPMJC)
			if err = proto.Unmarshal(choice.Info, info); err != nil {
				return nil, err
			}
			delta = choice.GoldDelta
		}
	}
	if info == nil || info.AugmentId != id {
		return nil, fmt.Errorf("CW investment effect not captured")
	}
	if delta < 0 {
		cost := uint64(-(delta + 1)) + 1
		if cost > uint64(player.Gold) {
			return nil, fmt.Errorf("CW investment gold insufficient")
		}
		player.Gold -= uint32(cost)
	} else {
		total := uint64(player.Gold) + uint64(delta)
		if total > math.MaxUint32 {
			total = math.MaxUint32
		}
		player.Gold = uint32(total)
	}
	if pending.QueuePosition == math.MaxUint32 {
		return nil, fmt.Errorf("CW pending queue exhausted")
	}
	next := &pb.CHCHAJIANIM{QueuePosition: pending.QueuePosition + 1, FGLIODAJFML: &pb.CHCHAJIANIM_LGNPHHBGKFH{LGNPHHBGKFH: &pb.HJPDALHDJHC{}}}
	augments.SyncAugmentInfo = append(augments.SyncAugmentInfo, info)
	run.FMIGOKIDKJL = next
	notify := cwNotify(&pb.KFNCAIHIHCM{MNLCHEJKDHO: &pb.KFNCAIHIHCM_EIKHFBCKIFA{EIKHFBCKIFA: &pb.OMINPDAIBLP{MCPIKEHDMND: info}}})
	notify.GCPNIHHBGGD[0].GridUpdateSrc = pb.JJDFGMMMCMI_JJDFGMMMCMI_EJLJOJFECPM
	if delta != 0 {
		gold := cwNotify(cwGoldSync(player.Gold)).GCPNIHHBGGD[0]
		gold.OOEOCGLLHFO = []uint32{id}
		gold.GridUpdateSrc = pb.JJDFGMMMCMI_JJDFGMMMCMI_ANMFPKDFICD
		notify.GCPNIHHBGGD = append([]*pb.ABPLALCHNFA{gold}, notify.GCPNIHHBGGD...)
	}
	notify.GCPNIHHBGGD = append(notify.GCPNIHHBGGD, cwNotify(cwFinish(pending.QueuePosition), cwUnlock()).GCPNIHHBGGD...)
	notify.GCPNIHHBGGD = append(notify.GCPNIHHBGGD, cwNotify(&pb.KFNCAIHIHCM{MNLCHEJKDHO: &pb.KFNCAIHIHCM_JOMFJHOCHJP{JOMFJHOCHJP: player.GAJGBBFELEL}}, &pb.KFNCAIHIHCM{MNLCHEJKDHO: &pb.KFNCAIHIHCM_FMIGOKIDKJL{FMIGOKIDKJL: next}}).GCPNIHHBGGD...)
	return notify, nil
}