package repository

import (
	"context"
	"fmt"
	"strings"

	"github.com/pkg/errors"
	"github.com/tiptok/gocomm/pkg/cache"
	"gitlab.fjmaimaimai.com/allied-creation/sumifcc-discuss/cmd/discuss/interanl/pkg/db/models"
	"gitlab.fjmaimaimai.com/allied-creation/sumifcc-discuss/cmd/discuss/interanl/pkg/db/transaction"
	"gitlab.fjmaimaimai.com/allied-creation/sumifcc-discuss/cmd/discuss/interanl/pkg/domain"
	"gorm.io/gorm"
)

type ArticleRepository struct {
	*cache.CachedRepository
}

func (repository *ArticleRepository) Insert(ctx context.Context, conn transaction.Conn, dm *domain.Article) (*domain.Article, error) {
	var (
		err error
		m   = &models.Article{}
		tx  = conn.DB()
	)
	if m, err = repository.DomainModelToModel(dm); err != nil {
		return nil, err
	}
	if tx = tx.Model(m).Save(m); tx.Error != nil {
		return nil, tx.Error
	}
	dm.Id = m.Id
	return repository.ModelToDomainModel(m)

}

func (repository *ArticleRepository) Update(ctx context.Context, conn transaction.Conn, dm *domain.Article) (*domain.Article, error) {
	var (
		err error
		m   *models.Article
		tx  = conn.DB()
	)
	if m, err = repository.DomainModelToModel(dm); err != nil {
		return nil, err
	}
	queryFunc := func() (interface{}, error) {
		tx = tx.Model(m).Select("*").Updates(m)
		return nil, tx.Error
	}
	if _, err = repository.Query(queryFunc, m.CacheKeyFunc()); err != nil {
		return nil, err
	}
	return repository.ModelToDomainModel(m)
}

func (repository *ArticleRepository) UpdateWithVersion(ctx context.Context, transaction transaction.Conn, dm *domain.Article) (*domain.Article, error) {
	var (
		err error
		m   *models.Article
		tx  = transaction.DB()
	)
	if m, err = repository.DomainModelToModel(dm); err != nil {
		return nil, err
	}
	oldVersion := dm.Version
	m.Version += 1
	queryFunc := func() (interface{}, error) {
		tx = tx.Model(m).Select("*").Where("id = ?", m.Id).Where("version = ?", oldVersion).Updates(m)
		if tx.RowsAffected == 0 {
			return nil, domain.ErrUpdateFail
		}
		return nil, tx.Error
	}
	if _, err = repository.Query(queryFunc, m.CacheKeyFunc()); err != nil {
		return nil, err
	}
	return repository.ModelToDomainModel(m)
}

func (repository *ArticleRepository) Delete(ctx context.Context, conn transaction.Conn, dm *domain.Article) (*domain.Article, error) {
	var (
		tx = conn.DB()
		m  = &models.Article{Id: dm.Id}
	)
	queryFunc := func() (interface{}, error) {
		tx = tx.Where("id = ?", m.Id).Delete(m)
		return m, tx.Error
	}
	if _, err := repository.Query(queryFunc, m.CacheKeyFunc()); err != nil {
		return dm, err
	}
	return repository.ModelToDomainModel(m)
}

func (repository *ArticleRepository) FindOne(ctx context.Context, conn transaction.Conn, id int64) (*domain.Article, error) {
	var (
		err error
		tx  = conn.DB()
		m   = new(models.Article)
	)
	queryFunc := func() (interface{}, error) {
		tx = tx.Model(m).Where("id = ?", id).First(m)
		if errors.Is(tx.Error, gorm.ErrRecordNotFound) {
			return nil, domain.ErrNotFound
		}
		return m, tx.Error
	}
	cacheModel := new(models.Article)
	cacheModel.Id = id
	if err = repository.QueryCache(cacheModel.CacheKeyFunc, m, queryFunc); err != nil {
		return nil, err
	}
	return repository.ModelToDomainModel(m)
}

func (repository *ArticleRepository) Find(ctx context.Context, conn transaction.Conn, companyId int64, queryOptions map[string]interface{}) (int64, []*domain.Article, error) {
	var (
		tx    = conn.DB()
		ms    []*models.Article
		dms   = make([]*domain.Article, 0)
		total int64
	)
	queryFunc := func() (interface{}, error) {
		tx = tx.Model(&ms).Where("company_id=?", companyId)
		if v, ok := queryOptions["orderMode"]; ok {
			mode := v.(string)
			switch mode {
			case "countComment ascending":
				tx = tx.Order("count_comment asc")
			case "countComment descending":
				tx = tx.Order("count_comment desc")
			case "countLove ascending":
				tx = tx.Order("count_love asc")
			case "countLove descending":
				tx = tx.Order("count_love desc")
			default:
				tx = tx.Order("created_at desc")
			}
		} else {
			tx = tx.Order("created_at desc")
		}
		if v, ok := queryOptions["ids"]; ok {
			tx = tx.Where("id in (?)", v)
		}
		if v, ok := queryOptions["title"]; ok && v.(string) != "" {
			tx = tx.Where("title like ?", "%"+v.(string)+"%")
		}
		if v, ok := queryOptions["beginCreatedAt"]; ok {
			tx = tx.Where("created_at >= ?", v)
		}
		if v, ok := queryOptions["endCreatedAt"]; ok {
			tx = tx.Where("created_at < ?", v)
		}
		if v, ok := queryOptions["authorId"]; ok {
			tx = tx.Where("author_id=?", v)
		}
		if v, ok := queryOptions["tags"]; ok && len(v.([]int64)) > 0 {
			values := make([]string, 0)
			for _, item := range v.([]int64) {
				values = append(values, fmt.Sprintf("%v", item))
			}
			tx = tx.Where("tags @> ?", "["+strings.Join(values, ",")+"]")
		}
		if total, tx = transaction.PaginationAndCount(ctx, tx, queryOptions, &ms); tx.Error != nil {
			return dms, tx.Error
		}
		return dms, nil
	}

	if _, err := repository.Query(queryFunc); err != nil {
		return 0, nil, err
	}

	for _, item := range ms {
		if dm, err := repository.ModelToDomainModel(item); err != nil {
			return 0, dms, err
		} else {
			dms = append(dms, dm)
		}
	}
	return total, dms, nil
}

// FindLatestAccessibleArticle 最新可访问的文章
func (repository *ArticleRepository) FindLatestAccessibleArticle(ctx context.Context, conn transaction.Conn,
	companyId int64, whoRead int64, lastId int64, limit int) (int64, []*domain.Article, error) {
	var (
		tx    = conn.DB()
		ms    []*models.Article
		dms   = make([]*domain.Article, 0)
		total int64
	)
	queryFunc := func() (interface{}, error) {
		tx = tx.Model(&ms).
			Where("company_id=?", companyId).
			Where(fmt.Sprintf("author_id = %d or target_user=0 or who_read @>'[%d]'", whoRead, whoRead)).
			Where("show = 1")
		if lastId > 0 {
			tx.Where("id < ?", lastId)
		}
		tx.Order("id desc")
		if limit > 0 {
			tx.Limit(limit)
		}
		if total, tx = transaction.PaginationAndCount(ctx, tx, domain.NewQueryOptions().WithFindOnly(), &ms); tx.Error != nil {
			return dms, tx.Error
		}
		return dms, nil
	}

	if _, err := repository.Query(queryFunc); err != nil {
		return 0, nil, err
	}

	for _, item := range ms {
		if dm, err := repository.ModelToDomainModel(item); err != nil {
			return 0, dms, err
		} else {
			dms = append(dms, dm)
		}
	}
	return total, dms, nil
}

// FindAuthorsLatestArticle 作者最新的文章
func (repository *ArticleRepository) FindAuthorsLatestArticle(ctx context.Context, conn transaction.Conn,
	companyId int64, authors []int64, whoRead int64, lastId int64, limit int, queryOptions map[string]interface{}) (int64, []*domain.Article, error) {
	var (
		tx    = conn.DB()
		ms    []*models.Article
		dms   = make([]*domain.Article, 0)
		total int64
	)
	queryFunc := func() (interface{}, error) {
		tx = tx.Model(&ms).
			Where("company_id=?", companyId).
			Where("author_id in (?)", authors). // 包含自己的文章
			Where(fmt.Sprintf("author_id = %d or target_user=0 or who_read @>'[%d]'", whoRead, whoRead)).
			Where("show = 1")
		if lastId > 0 {
			tx.Where("id < ?", lastId)
		}
		if v, ok := queryOptions["beginTime"]; ok {
			tx.Where("created_at >= ?", v)
		}
		if v, ok := queryOptions["endTime"]; ok {
			tx.Where("created_at < ?", v)
		}
		if v, ok := queryOptions["keywords"]; ok {
			tx.Where("title like ?", fmt.Sprintf("%%%v%%", v))
		}
		if v, ok := queryOptions["orderByHotScore"]; ok {
			tx.Order(fmt.Sprintf("(count_comment+count_love) %v", v))
		} else if v, ok := queryOptions["orderByAll"]; ok {
			tx.Order(fmt.Sprintf("id %v", v))
		} else {
			tx.Order("id desc")
		}
		if limit > 0 {
			tx.Limit(limit)
		}
		if total, tx = transaction.PaginationAndCount(ctx, tx, queryOptions, &ms); tx.Error != nil {
			return dms, tx.Error
		}
		return dms, nil
	}

	if _, err := repository.Query(queryFunc); err != nil {
		return 0, nil, err
	}

	for _, item := range ms {
		if dm, err := repository.ModelToDomainModel(item); err != nil {
			return 0, dms, err
		} else {
			dms = append(dms, dm)
		}
	}
	return total, dms, nil
}

// FindAuthorsLatestFirstArticle 作者最新的第一篇文章
func (repository *ArticleRepository) FindAuthorsLatestFirstArticle(ctx context.Context, conn transaction.Conn,
	companyId int64, authors []int64, whoRead int64, limit int) (int64, []*domain.Article, error) {
	var (
		tx    = conn.DB()
		ms    []*models.Article
		dms   = make([]*domain.Article, 0)
		total int64
	)
	queryFunc := func() (interface{}, error) {
		tx = tx.Model(&ms).Select("max(id) id", "max(author_id) author_id", "max(created_at) created_at").
			Where("company_id=?", companyId).
			Where("author_id in (?)", authors).
			Where("target_user=0 or who_read @>? ", fmt.Sprintf("[%d]", whoRead)).
			Where("show = 1").
			Group("author_id").
			Order("id desc")
		if limit > 0 {
			tx.Limit(limit)
		}
		if total, tx = transaction.PaginationAndCount(ctx, tx, domain.NewQueryOptions().WithFindOnly(), &ms); tx.Error != nil {
			return dms, tx.Error
		}
		return dms, nil
	}

	if _, err := repository.Query(queryFunc); err != nil {
		return 0, nil, err
	}

	for _, item := range ms {
		if dm, err := repository.ModelToDomainModel(item); err != nil {
			return 0, dms, err
		} else {
			dms = append(dms, dm)
		}
	}
	return total, dms, nil
}

// FindAuthorsLatestFirstUnreadArticle 作者最新的第一篇未读文章
func (repository *ArticleRepository) FindAuthorsLatestFirstUnreadArticle(ctx context.Context, conn transaction.Conn,
	companyId int64, authors []int64, whoRead int64, limit int) (int64, []*domain.Article, error) {
	var (
		tx    = conn.DB()
		ms    []*models.Article
		dms   = make([]*domain.Article, 0)
		total int64
	)
	queryFunc := func() (interface{}, error) {
		tx = tx.Model(&ms).Select("max(id) id", "max(author_id) author_id", "max(created_at) created_at").
			Where("company_id=?", companyId).
			Where("author_id in (?)", authors).
			Where("target_user=0 or who_read @>? ", fmt.Sprintf("[%d]", whoRead)).
			Where("show = 1").
			Where("id not in (select article_id from user_read_article where user_id = ?)", whoRead).
			Group("author_id").
			Order("id desc")
		if limit > 0 {
			tx.Limit(limit)
		}
		if total, tx = transaction.PaginationAndCount(ctx, tx, domain.NewQueryOptions().WithFindOnly(), &ms); tx.Error != nil {
			return dms, tx.Error
		}
		return dms, nil
	}

	if _, err := repository.Query(queryFunc); err != nil {
		return 0, nil, err
	}

	for _, item := range ms {
		if dm, err := repository.ModelToDomainModel(item); err != nil {
			return 0, dms, err
		} else {
			dms = append(dms, dm)
		}
	}
	return total, dms, nil
}

func (repository *ArticleRepository) ModelToDomainModel(from *models.Article) (*domain.Article, error) {
	to := &domain.Article{
		Id:           from.Id,
		CompanyId:    from.CompanyId,
		CreatedAt:    from.CreatedAt,
		UpdatedAt:    from.UpdatedAt,
		DeletedAt:    from.DeletedAt,
		Version:      from.Version,
		AuthorId:     from.AuthorId,
		Author:       from.Author,
		Title:        from.Title,
		Images:       from.Images,
		WhoRead:      from.WhoRead,
		WhoReview:    from.WhoReview,
		Location:     from.Location,
		TargetUser:   domain.ArticleTarget(from.TargetUser),
		CountLove:    from.CountLove,
		CountComment: from.CountComment,
		CountRead:    from.CountRead,
		Show:         domain.ArticleShow(from.Show),
		Tags:         from.Tags,
		Summary:      from.Summary,
		MatchUrl:     from.MatchUrl,
		Videos:       from.Videos,
	}
	return to, nil
}

func (repository *ArticleRepository) DomainModelToModel(from *domain.Article) (*models.Article, error) {
	to := &models.Article{
		Id:           from.Id,
		CompanyId:    from.CompanyId,
		CreatedAt:    from.CreatedAt,
		UpdatedAt:    from.UpdatedAt,
		DeletedAt:    from.DeletedAt,
		IsDel:        0,
		Version:      from.Version,
		AuthorId:     from.AuthorId,
		Author:       from.Author,
		Title:        from.Title,
		Images:       from.Images,
		WhoRead:      from.WhoRead,
		WhoReview:    from.WhoReview,
		Location:     from.Location,
		TargetUser:   int(from.TargetUser),
		CountLove:    from.CountLove,
		CountRead:    from.CountRead,
		CountComment: from.CountComment,
		Tags:         from.Tags,
		Show:         int(from.Show),
		Summary:      from.Summary,
		MatchUrl:     from.MatchUrl,
		Videos:       from.Videos,
	}
	// err := copier.Copy(to, from)
	return to, nil
}

// 点赞数量变动
func (repository *ArticleRepository) IncreaseCountLove(ctx context.Context, conn transaction.Conn, incr int, articleId int64) error {
	//
	var (
		err error
		m   *models.Article
		tx  = conn.DB()
	)
	m = &models.Article{Id: articleId}
	queryFunc := func() (interface{}, error) {
		tx = tx.Model(m).Updates(map[string]interface{}{
			"count_love": gorm.Expr("count_love+?", incr),
			"version":    gorm.Expr("version+1"),
		})
		return nil, tx.Error
	}
	if _, err = repository.Query(queryFunc, m.CacheKeyFunc()); err != nil {
		return err
	}
	return nil
}

// 浏览数量变动
func (repository *ArticleRepository) IncreaseCountRead(ctx context.Context, conn transaction.Conn, incr int, articleId int64) error {
	var (
		err error
		m   *models.Article
		tx  = conn.DB()
	)
	m = &models.Article{Id: articleId}
	queryFunc := func() (interface{}, error) {
		tx = tx.Model(m).Updates(map[string]interface{}{
			"version":    gorm.Expr("version+1"),
			"count_read": gorm.Expr("count_read+?", incr),
		})
		return nil, tx.Error
	}
	if _, err = repository.Query(queryFunc, m.CacheKeyFunc()); err != nil {
		return err
	}
	return nil
}

// 评论数量变动
func (repository *ArticleRepository) IncreaseCountComment(ctx context.Context, conn transaction.Conn, incr int, articleId int64) error {
	var (
		err error
		m   *models.Article
		tx  = conn.DB()
	)
	m = &models.Article{Id: articleId}
	queryFunc := func() (interface{}, error) {
		tx = tx.Model(m).Updates(map[string]interface{}{
			"version":       gorm.Expr("version+1"),
			"count_comment": gorm.Expr("count_comment+?", incr),
		})
		return nil, tx.Error
	}
	if _, err = repository.Query(queryFunc, m.CacheKeyFunc()); err != nil {
		return err
	}
	return nil
}

func NewArticleRepository(cache *cache.CachedRepository) domain.ArticleRepository {
	return &ArticleRepository{CachedRepository: cache}
}

// 小程序端搜索查询文章
// userId  人员id,谁查看文章
// companyId 公司id
// tagCategory 标签分类
// tagId 标签id
// createdAt  文章的发布时间,按范围查询 [开始时间,结束时间]
// titleLike 搜索标题
func (repository *ArticleRepository) CustomSearchBy(ctx context.Context, conn transaction.Conn, userId int64, companyId int64,
	tagCategory string, tagId int64, createdAt [2]int64, titleLike string, page int, size int) (int64, []*domain.Article, error) {
	var (
		tx    = conn.DB()
		ms    []*models.Article
		dms   = make([]*domain.Article, 0)
		total int64
	)
	tx = tx.Model(&ms).
		Where(`article."show" =?`, domain.ArticleShowEnable).
		Where(`article."deleted_at" = 0`).
		Where(`article."company_id"=?`, companyId).
		Where(
			fmt.Sprintf(`(article.target_user = 0 or article.who_read @> '[%d]' )`, userId),
		)
	if createdAt[0] > 0 {
		tx = tx.Where("article.created_at >=?", createdAt[0])
	}
	if createdAt[1] > 0 {
		tx = tx.Where("article.created_at <=?", createdAt[1])
	}
	if tagId > 0 {
		tx = tx.Joins(`join article_and_tag on article.id = article_and_tag.article_id`)
		tx = tx.Where("article_and_tag.tag_id=?", tagId)
	} else if len(tagCategory) > 0 {
		tx = tx.Joins(`join article_and_tag on article.id = article_and_tag.article_id`)
		tx = tx.Where(`article_and_tag.tag_id =any(select article_tag.id from article_tag where category =? )`, tagCategory)
	}
	if len(titleLike) > 0 {
		tx = tx.Where("article.title like ?", "%"+titleLike+"%")
	}

	result := tx.Count(&total)
	if result.Error != nil {
		return 0, nil, result.Error
	}
	if size <= 0 {
		size = 20

	}
	if page <= 0 {
		page = 1
	}
	result = tx.Limit(size).Offset((page - 1) * size).Order("id desc").Find(&ms)
	if result.Error != nil {
		return 0, nil, result.Error
	}
	for _, item := range ms {
		if dm, err := repository.ModelToDomainModel(item); err != nil {
			return 0, dms, err
		} else {
			dms = append(dms, dm)
		}
	}
	return total, dms, nil
}

// select *
// from article
// join article_and_tag on article.id = article_and_tag.article_id
// where article."show" =1
// and article_and_tag.tag_id =any(select article_tag.id from article_tag where category ='分组三' )
// and article_and_tag.tag_id =0
// and article.created_at >=0 and article.created_at <=9000000000
// and article.title like '%%'