package com.izouma.nineth.service;

import com.izouma.nineth.TokenHistory;
import com.izouma.nineth.domain.Collection;
import com.izouma.nineth.domain.*;
import com.izouma.nineth.dto.PageQuery;
import com.izouma.nineth.dto.UserHistory;
import com.izouma.nineth.enums.AssetStatus;
import com.izouma.nineth.enums.CollectionSource;
import com.izouma.nineth.enums.CollectionType;
import com.izouma.nineth.enums.OrderStatus;
import com.izouma.nineth.event.TransferAssetEvent;
import com.izouma.nineth.exception.BusinessException;
import com.izouma.nineth.lock.RedisLockable;
import com.izouma.nineth.repo.*;
import com.izouma.nineth.utils.JpaUtils;
import com.izouma.nineth.utils.SecurityUtils;
import com.izouma.nineth.utils.TokenUtils;
import lombok.AllArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.context.ApplicationContext;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.time.temporal.ChronoUnit;
import java.util.*;
import java.util.stream.Collectors;

@Service
@AllArgsConstructor
@Slf4j
public class AssetService {

    private AssetRepo          assetRepo;
    private UserRepo           userRepo;
    private CollectionRepo     collectionRepo;
    private ApplicationContext applicationContext;
    private OrderRepo          orderRepo;
    private TokenHistoryRepo   tokenHistoryRepo;
    private AssetMintService   assetMintService;
    private SysConfigService   sysConfigService;

    public Page<Asset> all(PageQuery pageQuery) {
        return assetRepo.findAll(JpaUtils.toSpecification(pageQuery, Asset.class), JpaUtils.toPageRequest(pageQuery));
    }

    public Asset createAsset(Collection collection, User user, Long orderId, BigDecimal price, String type, Integer number) {
        Asset asset = Asset.create(collection, user);
        asset.setTokenId(TokenUtils.genTokenId());
        asset.setNumber(number);
        asset.setOrderId(orderId);
        asset.setPrice(price);
        assetRepo.save(asset);

        tokenHistoryRepo.save(TokenHistory.builder()
                .tokenId(asset.getTokenId())
                .fromUser(collection.getMinter())
                .fromUserId(collection.getMinterId())
                .fromAvatar(collection.getMinterAvatar())
                .toUser(user.getNickname())
                .toUserId(user.getId())
                .toAvatar(user.getAvatar())
                .operation(type)
                .price(price)
                .projectId(asset.getProjectId())
                .build());
        assetMintService.mint(asset);
        return asset;
    }

    public Asset createAsset(BlindBoxItem winItem, User user, Long orderId, BigDecimal price, String type, Integer number) {
        Asset asset = Asset.create(winItem, user);
        asset.setTokenId(TokenUtils.genTokenId());
        asset.setNumber(number);
        asset.setOrderId(orderId);
        asset.setPrice(price);
        assetRepo.saveAndFlush(asset);

        tokenHistoryRepo.save(TokenHistory.builder()
                .tokenId(asset.getTokenId())
                .fromUser(winItem.getMinter())
                .fromUserId(winItem.getMinterId())
                .fromAvatar(winItem.getMinterAvatar())
                .toUser(user.getNickname())
                .toUserId(user.getId())
                .toAvatar(user.getAvatar())
                .operation(type)
                .price(price)
                .projectId(asset.getProjectId())
                .build());
        assetMintService.mint(asset.getId(), user.getId());
        return asset;
    }


    public void publicShow(Long id) {
        Asset asset = assetRepo.findById(id).orElseThrow(new BusinessException("无记录"));
        if (!asset.getUserId().equals(SecurityUtils.getAuthenticatedUser().getId())) {
            throw new BusinessException("此藏品不属于你");
        }
        if (asset.isPublicShow()) {
            return;
        }
        if (asset.getStatus() != AssetStatus.NORMAL) {
            throw new BusinessException("当前状态不可展示");
        }
        User owner = userRepo.findById(asset.getUserId()).orElseThrow(new BusinessException("用户不存在"));
        Collection collection = Collection.builder()
                .name(asset.getName())
                .pic(asset.getPic())
                .minter(asset.getMinter())
                .minterId(asset.getMinterId())
                .minterAvatar(asset.getMinterAvatar())
                .owner(owner.getNickname())
                .ownerId(owner.getId())
                .ownerAvatar(owner.getAvatar())
                .detail(asset.getDetail())
                .type(CollectionType.DEFAULT)
                .source(CollectionSource.TRANSFER)
                .sale(0)
                .stock(1)
                .total(1)
                .onShelf(true)
                .salable(false)
                .price(BigDecimal.valueOf(0))
                .properties(asset.getProperties())
                .canResale(asset.isCanResale())
                .royalties(asset.getRoyalties())
                .serviceCharge(asset.getServiceCharge())
                .assetId(id)
                .number(asset.getNumber())
                .projectId(asset.getProjectId())
                .build();
        collectionRepo.save(collection);
        asset.setPublicShow(true);
        asset.setPublicCollectionId(collection.getId());
        assetRepo.save(asset);
    }

    public void consignment(Long id, BigDecimal price) {
        Asset asset = assetRepo.findById(id).orElseThrow(new BusinessException("无记录"));
        if (!asset.getUserId().equals(SecurityUtils.getAuthenticatedUser().getId())) {
            throw new BusinessException("此藏品不属于你");
        }
        int holdDays = sysConfigService.getInt("hold_days");
        if (ChronoUnit.DAYS.between(asset.getCreatedAt(), LocalDateTime.now()) < holdDays) {
            throw new BusinessException("需持有满" + holdDays + "天才能寄售上架");
        }
        User owner = userRepo.findById(asset.getUserId()).orElseThrow(new BusinessException("用户不存在"));
        if (StringUtils.isBlank(owner.getSettleAccountId())) {
            throw new BusinessException("请先绑定银行卡");
        }
        if (asset.isConsignment()) {
            throw new BusinessException("已寄售，请勿重新操作");
        }
        if (asset.getStatus() != AssetStatus.NORMAL) {
            throw new BusinessException("当前状态不可寄售");
        }
        if (asset.isPublicShow()) {
            cancelPublic(asset);
        }
        Collection collection = Collection.builder()
                .name(asset.getName())
                .pic(asset.getPic())
                .minter(asset.getMinter())
                .minterId(asset.getMinterId())
                .minterAvatar(asset.getMinterAvatar())
                .owner(owner.getNickname())
                .ownerId(owner.getId())
                .ownerAvatar(owner.getAvatar())
                .detail(asset.getDetail())
                .type(CollectionType.DEFAULT)
                .source(CollectionSource.TRANSFER)
                .sale(0)
                .stock(1)
                .total(1)
                .onShelf(true)
                .salable(true)
                .price(price)
                .properties(asset.getProperties())
                .canResale(asset.isCanResale())
                .royalties(asset.getRoyalties())
                .serviceCharge(asset.getServiceCharge())
                .assetId(id)
                .number(asset.getNumber())
                .projectId(asset.getProjectId())
                .build();
        collectionRepo.save(collection);
        asset.setPublicShow(true);
        asset.setConsignment(true);
        asset.setPublicCollectionId(collection.getId());
        asset.setSellPrice(price);
        assetRepo.save(asset);
    }

    public void cancelConsignment(Long id) {
        Asset asset = assetRepo.findById(id).orElseThrow(new BusinessException("无记录"));
        if (!asset.getUserId().equals(SecurityUtils.getAuthenticatedUser().getId())) {
            throw new BusinessException("此藏品不属于你");
        }
        cancelConsignment(asset);
    }

    public void cancelConsignment(Asset asset) {
        if (!asset.getUserId().equals(SecurityUtils.getAuthenticatedUser().getId())) {
            throw new BusinessException("此藏品不属于你");
        }
        if (asset.getPublicCollectionId() != null) {
            List<Order> orders = orderRepo.findByCollectionId(asset.getPublicCollectionId());
            if (orders.stream().anyMatch(o -> o.getStatus() != OrderStatus.CANCELLED)) {
                throw new BusinessException("已有订单不可取消");
            }
            collectionRepo.findById(asset.getPublicCollectionId())
                    .ifPresent(collection -> {
                        collection.setSalable(false);
                        collectionRepo.save(collection);
                    });
        }
        asset.setConsignment(false);
        assetRepo.save(asset);
    }

    public void cancelPublic(Long id) {
        Asset asset = assetRepo.findById(id).orElseThrow(new BusinessException("无记录"));
        if (!asset.getUserId().equals(SecurityUtils.getAuthenticatedUser().getId())) {
            throw new BusinessException("此藏品不属于你");
        }
        cancelPublic(asset);
    }

    public void cancelPublic(Asset asset) {
        if (!asset.getUserId().equals(SecurityUtils.getAuthenticatedUser().getId())) {
            throw new BusinessException("此藏品不属于你");
        }
        if (!asset.isPublicShow()) {
            return;
        }
        if (asset.isConsignment()) {
            cancelConsignment(asset);
        }
        Collection collection = collectionRepo.findById(asset.getPublicCollectionId())
                .orElseThrow(new BusinessException("无展示记录"));
        collectionRepo.delete(collection);

        asset.setPublicShow(false);
        asset.setPublicCollectionId(null);
        assetRepo.save(asset);
    }

    public void usePrivilege(Long assetId, Long privilegeId) {
        Asset asset = assetRepo.findById(assetId).orElseThrow(new BusinessException("无记录"));
        asset.getPrivileges().stream().filter(p -> p.getId().equals(privilegeId)).forEach(p -> {
            p.setOpened(true);
            p.setOpenTime(LocalDateTime.now());
            p.setOpenedBy(SecurityUtils.getAuthenticatedUser().getId());
        });
        assetRepo.save(asset);
    }

    @Async
    public void transfer(Asset asset, BigDecimal price, User toUser, String reason, Long orderId) {
        Asset newAsset = new Asset();
        BeanUtils.copyProperties(asset, newAsset);
        newAsset.setId(null);
        newAsset.setUserId(toUser.getId());
        newAsset.setOwner(toUser.getNickname());
        newAsset.setOwnerId(toUser.getId());
        newAsset.setOwnerAvatar(toUser.getAvatar());
        newAsset.setPublicShow(false);
        newAsset.setConsignment(false);
        newAsset.setPublicCollectionId(null);
        newAsset.setStatus(AssetStatus.NORMAL);
        newAsset.setPrice(price);
        newAsset.setSellPrice(null);
        newAsset.setOrderId(orderId);
        newAsset.setFromAssetId(asset.getId());
        assetRepo.save(newAsset);

        tokenHistoryRepo.save(TokenHistory.builder()
                .tokenId(asset.getTokenId())
                .fromUser(asset.getOwner())
                .fromUserId(asset.getOwnerId())
                .fromAvatar(asset.getOwnerAvatar())
                .toUser(toUser.getNickname())
                .toUserId(toUser.getId())
                .toAvatar(toUser.getAvatar())
                .operation(reason)
                .price("转赠".equals(reason) ? null : price)
                .projectId(asset.getProjectId())
                .build());

        asset.setPublicShow(false);
        asset.setConsignment(false);
        asset.setPublicCollectionId(null);
        asset.setStatus("转赠".equals(reason) ? AssetStatus.GIFTED : AssetStatus.TRANSFERRED);
        asset.setOwner(toUser.getNickname());
        asset.setOwnerId(toUser.getId());
        asset.setOwnerAvatar(toUser.getAvatar());
        asset.setOutTime(LocalDateTime.now());
        assetRepo.save(asset);

        if (orderId != null) {
            applicationContext.publishEvent(new TransferAssetEvent(this, true, newAsset));
        }
    }

    public List<TokenHistory> tokenHistory(String tokenId, Long assetId) {
        if (tokenId == null) {
            if (assetId == null) return new ArrayList<>();
            tokenId = assetRepo.findById(assetId).map(Asset::getTokenId).orElse(null);
        }
        if (tokenId == null) return new ArrayList<>();
        return tokenHistoryRepo.findByTokenIdOrderByCreatedAtDesc(tokenId);
    }

    @RedisLockable(key = "#id", expiration = 60, isWaiting = true)
    public void testLock(String id, String i) throws InterruptedException {
        Thread.sleep(1000);
        log.info("" + i);
    }

    public void setHistory() {
        List<Asset> assets = assetRepo.findByCreatedAtBefore(LocalDateTime.of(2021, 11, 22, 23, 59, 59));
        assets.parallelStream().forEach(asset -> {
            try {
                User owner = userRepo.findById(asset.getUserId()).orElseThrow(new BusinessException(""));
                Order order = orderRepo.findById(asset.getOrderId()).orElseThrow(new BusinessException(""));
                TokenHistory t = TokenHistory.builder()
                        .tokenId(asset.getTokenId())
                        .fromUser(asset.getMinter())
                        .fromUserId(asset.getMinterId())
                        .fromAvatar(asset.getMinterAvatar())
                        .toUser(owner.getNickname())
                        .toUserId(owner.getId())
                        .toAvatar(owner.getAvatar())
                        .operation("出售")
                        .price(order.getPrice())
                        .projectId(asset.getProjectId())
                        .build();
                t.setCreatedAt(asset.getCreatedAt());
                tokenHistoryRepo.save(t);
            } catch (Exception e) {
            }
        });
    }

    public Page<UserHistory> userHistory(Long userId, int projectId, Pageable pageable) {
        Page<TokenHistory> page = tokenHistoryRepo.userHistoryAndProjectId(userId, projectId, pageable);
        Set<String> tokenIds = page.stream().map(TokenHistory::getTokenId).collect(Collectors.toSet());
        List<Asset> assets = tokenIds.isEmpty() ? new ArrayList<>() : assetRepo.findByTokenIdIn(tokenIds);
        return page.map(tokenHistory -> {
            UserHistory userHistory = new UserHistory();
            BeanUtils.copyProperties(tokenHistory, userHistory);
            Optional<Asset> asset = assets.stream().filter(a -> a.getTokenId().equals(tokenHistory.getTokenId()))
                    .findAny();
            userHistory.setAssetName(asset.map(Asset::getName).orElse(null));
            userHistory.setPic(asset.map(Asset::getPic).orElse(new ArrayList<>()));
            switch (tokenHistory.getOperation()) {
                case "出售":
                case "转让":
                    userHistory.setDescription(tokenHistory.getToUserId().equals(userId) ? "作品交易——买入" : "作品交易——售出");
                    break;
                case "空投":
                    userHistory.setDescription("空投");
                    break;
                case "转赠":
                    userHistory.setDescription(tokenHistory.getToUserId().equals(userId) ? "他人赠送" : "作品赠送");
                    break;
            }
            return userHistory;
        });
    }

    public Map<User, Integer> holdQuery(List<String> names, LocalDateTime startTime, LocalDateTime endTime) {
        Map<User, Integer> result = new HashMap<>();
        userRepo.findAll().stream().parallel().forEach(user -> {
            List<Asset> assets = assetRepo.findByUserId(user.getId());
            assets = assets.stream().filter(a -> names.stream().anyMatch(n -> n.equals(a.getName())))
                    .collect(Collectors.toList());
            if (assets.size() < names.size()) {
                return;
            }
            assets = assets.stream().filter(a -> a.getCreatedAt().isBefore(startTime))
                    .collect(Collectors.toList());
            if (assets.size() < names.size()) {
                return;
            }
            assets = assets.stream().filter(a -> {
                        if (a.getStatus() != AssetStatus.GIFTED && a.getStatus() != AssetStatus.TRANSFERRED) {
                            return true;
                        } else {
                            Asset a1 = assetRepo.findFirstByTokenIdAndCreatedAtAfterOrderByCreatedAt(a.getTokenId(), a.getCreatedAt());
                            return a1 != null && a.getCreatedAt().isAfter(endTime);
                        }
                    })
                    .collect(Collectors.toList());
            boolean flag = true;
            Map<String, Integer> map = new HashMap<>();
            for (String name : names) {
                int c = (int) assets.stream().filter(a -> name.equals(a.getName())).count();
                map.put(name, c);
                flag = flag && (c > 0);
            }
            if (flag) {
                result.put(user, map.values().stream().mapToInt(i -> i).min().orElse(0));
            }
        });
        return result;
    }
}