package repository

import (
	"context"
	"database/sql"
	"time"

	"epic-ent/internal/domain/dto"
	"epic-ent/internal/domain/vo"
	"epic-ent/internal/ent"
	"epic-ent/internal/ent/epicheroinfo"
)

type HeroRepository struct {
	client *ent.Client
}

func NewHeroRepository(client *ent.Client) *HeroRepository {
	return &HeroRepository{client: client}
}

func (r *HeroRepository) Create(ctx context.Context, req dto.HeroCreateRequest) (vo.Hero, error) {
	create := r.client.EpicHeroInfo.Create().
		SetHeroName(valueOrEmpty(req.HeroName)).
		SetHeroCode(valueOrEmpty(req.HeroCode)).
		SetHeroAttrLv60(valueOrEmpty(req.HeroAttrLv60)).
		SetCreator(valueOrEmpty(req.Creator)).
		SetUpdater(valueOrEmpty(req.Updater)).
		SetDeleted(valueOrFalse(req.Deleted)).
		SetNickName(valueOrEmpty(req.NickName)).
		SetRarity(valueOrEmpty(req.Rarity)).
		SetRole(valueOrEmpty(req.Role)).
		SetZodiac(valueOrEmpty(req.Zodiac)).
		SetHeadImgURL(valueOrEmpty(req.HeadImgURL)).
		SetAttribute(valueOrEmpty(req.Attribute)).
		SetRemark(valueOrEmpty(req.Remark)).
		SetRawJSON(valueOrEmpty(req.RawJSON)).
		SetContentJSONSet(valueOrEmpty(req.ContentJSONSet))

	if req.CreateTime != nil {
		create.SetCreateTime(*req.CreateTime)
	}
	if req.UpdateTime != nil {
		create.SetUpdateTime(*req.UpdateTime)
	}
	if req.UpdateTimeSet != nil {
		create.SetUpdateTimeSet(*req.UpdateTimeSet)
	}

	hero, err := create.Save(ctx)
	if err != nil {
		return vo.Hero{}, err
	}

	return toVO(hero), nil
}

func (r *HeroRepository) GetByID(ctx context.Context, id int64) (vo.Hero, error) {
	hero, err := r.client.EpicHeroInfo.Query().
		Where(
			epicheroinfo.IDEQ(id),
			epicheroinfo.DeletedEQ(false),
		).
		Only(ctx)
	if err != nil {
		return vo.Hero{}, err
	}

	return toVO(hero), nil
}

func (r *HeroRepository) Update(ctx context.Context, id int64, req dto.HeroUpdateRequest) (vo.Hero, error) {
	updated := false
	update := r.client.EpicHeroInfo.Update().
		Where(
			epicheroinfo.IDEQ(id),
			epicheroinfo.DeletedEQ(false),
		)
	if req.HeroName != nil {
		update.SetHeroName(*req.HeroName)
		updated = true
	}
	if req.HeroCode != nil {
		update.SetHeroCode(*req.HeroCode)
		updated = true
	}
	if req.HeroAttrLv60 != nil {
		update.SetHeroAttrLv60(*req.HeroAttrLv60)
		updated = true
	}
	if req.Updater != nil {
		update.SetUpdater(*req.Updater)
		updated = true
	}
	if req.UpdateTime != nil {
		update.SetUpdateTime(*req.UpdateTime)
		updated = true
	}
	if req.Deleted != nil {
		update.SetDeleted(*req.Deleted)
		updated = true
	}
	if req.NickName != nil {
		update.SetNickName(*req.NickName)
		updated = true
	}
	if req.Rarity != nil {
		update.SetRarity(*req.Rarity)
		updated = true
	}
	if req.Role != nil {
		update.SetRole(*req.Role)
		updated = true
	}
	if req.Zodiac != nil {
		update.SetZodiac(*req.Zodiac)
		updated = true
	}
	if req.HeadImgURL != nil {
		update.SetHeadImgURL(*req.HeadImgURL)
		updated = true
	}
	if req.Attribute != nil {
		update.SetAttribute(*req.Attribute)
		updated = true
	}
	if req.Remark != nil {
		update.SetRemark(*req.Remark)
		updated = true
	}
	if req.RawJSON != nil {
		update.SetRawJSON(*req.RawJSON)
		updated = true
	}
	if req.ContentJSONSet != nil {
		update.SetContentJSONSet(*req.ContentJSONSet)
		updated = true
	}
	if req.UpdateTimeSet != nil {
		update.SetUpdateTimeSet(*req.UpdateTimeSet)
		updated = true
	}

	if !updated {
		return r.GetByID(ctx, id)
	}

	if req.UpdateTime == nil {
		update.SetUpdateTime(time.Now())
	}

	affected, err := update.Save(ctx)
	if err != nil {
		return vo.Hero{}, err
	}
	if affected == 0 {
		return vo.Hero{}, sql.ErrNoRows
	}

	return r.GetByID(ctx, id)
}

func (r *HeroRepository) Delete(ctx context.Context, id int64) error {
	affected, err := r.client.EpicHeroInfo.Update().
		Where(
			epicheroinfo.IDEQ(id),
			epicheroinfo.DeletedEQ(false),
		).
		SetDeleted(true).
		SetUpdateTime(time.Now()).
		Save(ctx)
	if err != nil {
		return err
	}
	if affected == 0 {
		return sql.ErrNoRows
	}

	return nil
}

func toVO(hero *ent.EpicHeroInfo) vo.Hero {
	return vo.Hero{
		ID:             hero.ID,
		HeroName:       hero.HeroName,
		HeroCode:       hero.HeroCode,
		HeroAttrLv60:   hero.HeroAttrLv60,
		Creator:        hero.Creator,
		CreateTime:     hero.CreateTime,
		Updater:        hero.Updater,
		UpdateTime:     hero.UpdateTime,
		Deleted:        hero.Deleted,
		NickName:       hero.NickName,
		Rarity:         hero.Rarity,
		Role:           hero.Role,
		Zodiac:         hero.Zodiac,
		HeadImgURL:     hero.HeadImgURL,
		Attribute:      hero.Attribute,
		Remark:         hero.Remark,
		RawJSON:        hero.RawJSON,
		ContentJSONSet: hero.ContentJSONSet,
		UpdateTimeSet:  hero.UpdateTimeSet,
	}
}

func valueOrEmpty(v *string) string {
	if v == nil {
		return ""
	}
	return *v
}

func valueOrFalse(v *bool) bool {
	if v == nil {
		return false
	}
	return *v
}