package nft

import (
	"context"
	"encoding/json"
	"errors"
	"fmt"
	"github.com/spf13/cast"
	"github.com/zeromicro/go-zero/core/logx"
	"net/http"
	"nova_task/internal/consts"
	"nova_task/internal/model"
	"nova_task/internal/svc"
	"time"
)

type HolderUpdateLogic struct {
	ctx    context.Context
	svcCtx *svc.ServiceContext
}

func NewHolderUpdateLogic(ctx context.Context, svcCtx *svc.ServiceContext) *HolderUpdateLogic {
	return &HolderUpdateLogic{
		ctx:    ctx,
		svcCtx: svcCtx,
	}
}

func (l *HolderUpdateLogic) HolderUpdate() {
	conf := struct {
		Network  string `json:"network"`
		Contract string `json:"contract"`
	}{}
	cf, err := l.svcCtx.ConfigModel.FindOneByName(l.ctx, consts.NftHolderApiConf)
	if err != nil {
		logx.Errorw("find nft holder api conf error", logx.Field("error", err))
		return
	}

	err = json.Unmarshal([]byte(cf.Value), &conf)
	if err != nil {
		logx.Errorw("unmarshal nft holder api conf error", logx.Field("error", err), logx.Field("value", cf.Value))
		return
	}

	ols, err := l.GetOwnerList(conf.Network, conf.Contract)
	if err != nil {
		logx.Errorw("get owner list error", logx.Field("error", err))
		return
	}
	updateSeq := int(time.Now().Unix())
	for _, o := range ols.Owners {
		for _, tk := range o.TokenBalances {
			balance := cast.ToInt(tk.Balance)
			logx.Debugw("owner token", logx.Field("address", o.OwnerAddress), logx.Field("token", tk.TokenID), logx.Field("balance", tk.Balance))
			nft, err := l.svcCtx.NftHolderModel.FindOneByTokenId(l.ctx, tk.TokenID)
			if err != nil {
				if errors.Is(err, model.ErrNotFound) {
					nft = &model.NhNftHolder{
						Address:   o.OwnerAddress,
						TokenId:   tk.TokenID,
						Balance:   balance,
						UpdateSeq: updateSeq,
					}
				} else {
					logx.Errorw("find nft holder error", logx.Field("error", err), logx.Field("address", o.OwnerAddress), logx.Field("token", tk.TokenID))
					continue
				}
			}

			var value int
			if nft.Id == 0 {
				// 新增
				_, err = l.svcCtx.NftHolderModel.Insert(l.ctx, nft)
				value = balance
			} else {
				// 持有数量变化
				value = balance - nft.Balance
				nft.Balance = balance
				nft.UpdateSeq = updateSeq
				err = l.svcCtx.NftHolderModel.Update(l.ctx, nft)
			}

			if err != nil {
				logx.Errorw("insert or update nft holder error", logx.Field("error", err), logx.Field("address", o.OwnerAddress), logx.Field("token", tk.TokenID), logx.Field("balance", balance))
			}

			// 余额有变化，记录变化日志
			if value != 0 {
				_, err = l.svcCtx.NftHolderChangeLogModel.Insert(l.ctx, &model.NhNftHolderChangeLog{
					Address: o.OwnerAddress,
					TokenId: tk.TokenID,
					Value:   balance,
					Balance: balance,
				})
				if err != nil {
					logx.Errorw("insert nft holder change log error", logx.Field("error", err), logx.Field("address", o.OwnerAddress), logx.Field("token", tk.TokenID))
				}
			}
		}
	}

	// 删除已经不持有的地址，且添加变化日志
	nfts, err := l.svcCtx.NftHolderModel.FindOtherUpdateSeq(l.ctx, updateSeq)
	if err != nil {
		logx.Errorw("find other update seq error", logx.Field("error", err))
		return
	}
	for _, nft := range nfts {
		_, err = l.svcCtx.NftHolderChangeLogModel.Insert(l.ctx, &model.NhNftHolderChangeLog{
			Address: nft.Address,
			TokenId: nft.TokenId,
			Value:   -nft.Balance,
			Balance: 0,
		})
		if err != nil {
			logx.Errorw("delete nft holder error", logx.Field("error", err), logx.Field("address", nft.Address), logx.Field("token", nft.TokenId))
		}
		uid, err := l.svcCtx.WalletModel.FindUidByAddress(l.ctx, nft.Address)
		if err != nil {
			logx.Errorw("find uid by address error", logx.Field("error", err), logx.Field("address", nft.Address))
			continue
		}
		err = l.svcCtx.StakeNftModel.UnStakeNft(l.ctx, uid, nft.TokenId, true)
		if err != nil {
			logx.Errorw("un stake nft error", logx.Field("error", err), logx.Field("address", nft.Address), logx.Field("token", nft.TokenId))
		}
	}
	err = l.svcCtx.NftHolderModel.DeleteOtherUpdateSeq(l.ctx, updateSeq)
	if err != nil {
		logx.Errorw("delete other update seq error", logx.Field("error", err), logx.Field("update_seq", updateSeq))
	}
}

type OwnerList struct {
	Owners []struct {
		OwnerAddress  string `json:"ownerAddress"`
		TokenBalances []struct {
			TokenID string `json:"tokenId"`
			Balance string `json:"balance"`
		} `json:"tokenBalances"`
	} `json:"owners"`
	PageKey string `json:"pageKey"`
}

func (l *HolderUpdateLogic) GetOwnerList(network, contractAddress string) (*OwnerList, error) {
	url := fmt.Sprintf("https://eth-%s.g.alchemy.com/nft/v3/alcht_1a183fAsPqF9upfTfp3AC1l0iedGLo/getOwnersForContract?contractAddress=%s&withTokenBalances=true", network, contractAddress)
	resp, err := http.Get(url)
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()
	result := new(OwnerList)
	err = json.NewDecoder(resp.Body).Decode(result)
	return result, err
}