package repository

import (
	"errors"

	appErrors "github.com/topfans/backend/pkg/errors"
	"github.com/topfans/backend/pkg/models"
	"gorm.io/gorm"
)

// AssetRegistryRepository 资产统一索引Repository接口
type AssetRegistryRepository interface {
	// Create 创建索引记录
	Create(registry *models.AssetRegistry) error

	// GetByID 根据ID查询
	GetByID(id int64) (*models.AssetRegistry, error)

	// GetByAssetID 根据asset_id查询
	GetByAssetID(assetID int64) (*models.AssetRegistry, error)

	// GetByAssetTypeAndID 根据类型和asset_id查询
	GetByAssetTypeAndID(assetType string, assetID int64) (*models.AssetRegistry, error)

	// GetByOwner 查询用户的所有索引记录
	GetByOwner(ownerUID, starID int64) ([]*models.AssetRegistry, error)

	// GetByOwnerAndType 查询用户指定类型的索引记录
	GetByOwnerAndType(ownerUID, starID int64, assetType string, limit, offset int) ([]*models.AssetRegistry, error)

	// GetByOwnerAndTypeAndGrade 查询用户指定类型和等级的索引记录
	GetByOwnerAndTypeAndGrade(ownerUID, starID int64, assetType string, grade int32, limit, offset int) ([]*models.AssetRegistry, error)

	// GetByOwnerAndTypeAndCategory 查询用户指定类型和分类的索引记录
	GetByOwnerAndTypeAndCategory(ownerUID, starID int64, assetType string, category string, limit, offset int) ([]*models.AssetRegistry, error)

	// GetByOwnerAndTypeAndActivity 查询用户指定类型和活动的索引记录
	GetByOwnerAndTypeAndActivity(ownerUID, starID int64, assetType string, activityID int64, limit, offset int) ([]*models.AssetRegistry, error)

	// CountByOwner 统计用户的索引记录数量
	CountByOwner(ownerUID, starID int64) (int64, error)

	// CountByOwnerAndType 统计用户指定类型的索引记录数量
	CountByOwnerAndType(ownerUID, starID int64, assetType string) (int64, error)

	// CountByOwnerAndTypeAndGrade 统计用户指定类型和等级的索引记录数量
	CountByOwnerAndTypeAndGrade(ownerUID, starID int64, assetType string, grade int32) (int64, error)

	// CountByOwnerAndTypeAndCategory 统计用户指定类型和分类的索引记录数量
	CountByOwnerAndTypeAndCategory(ownerUID, starID int64, assetType string, category string) (int64, error)

	// CountByOwnerAndTypeAndActivity 统计用户指定类型和活动的索引记录数量
	CountByOwnerAndTypeAndActivity(ownerUID, starID int64, assetType string, activityID int64) (int64, error)

	// UpdateLikeCount 更新点赞数
	UpdateLikeCount(assetID int64, likeCount int32) error

	// UpdateGrade 更新等级
	UpdateGrade(assetID int64, grade int32) error

	// Delete 删除索引记录
	Delete(assetID int64) error

	// DeleteByAssetType 删除指定类型的索引记录
	DeleteByAssetType(assetType string, assetID int64) error
}

// assetRegistryRepository 资产统一索引Repository实现
type assetRegistryRepository struct {
	db *gorm.DB
}

// NewAssetRegistryRepository 创建资产统一索引Repository实例
func NewAssetRegistryRepository(db *gorm.DB) AssetRegistryRepository {
	return &assetRegistryRepository{db: db}
}

// Create 创建索引记录
func (r *assetRegistryRepository) Create(registry *models.AssetRegistry) error {
	if registry == nil {
		return errors.New("registry cannot be nil")
	}
	if registry.OwnerUID <= 0 {
		return errors.New("owner_uid must be greater than 0")
	}
	if registry.StarID <= 0 {
		return errors.New("star_id must be greater than 0")
	}
	return r.db.Create(registry).Error
}

// GetByID 根据ID查询
func (r *assetRegistryRepository) GetByID(id int64) (*models.AssetRegistry, error) {
	if id <= 0 {
		return nil, errors.New("id must be greater than 0")
	}
	var registry models.AssetRegistry
	if err := r.db.Where("id = ?", id).First(&registry).Error; err != nil {
		if errors.Is(err, gorm.ErrRecordNotFound) {
			return nil, appErrors.ErrAssetRegistryNotFound
		}
		return nil, err
	}
	return &registry, nil
}

// GetByAssetID 根据asset_id查询
func (r *assetRegistryRepository) GetByAssetID(assetID int64) (*models.AssetRegistry, error) {
	if assetID <= 0 {
		return nil, errors.New("asset_id must be greater than 0")
	}
	var registry models.AssetRegistry
	if err := r.db.Where("asset_id = ?", assetID).First(&registry).Error; err != nil {
		if errors.Is(err, gorm.ErrRecordNotFound) {
			return nil, appErrors.ErrAssetRegistryNotFound
		}
		return nil, err
	}
	return &registry, nil
}

// GetByAssetTypeAndID 根据类型和asset_id查询
func (r *assetRegistryRepository) GetByAssetTypeAndID(assetType string, assetID int64) (*models.AssetRegistry, error) {
	if assetType == "" {
		return nil, errors.New("asset_type must not be empty")
	}
	if assetID <= 0 {
		return nil, errors.New("asset_id must be greater than 0")
	}
	var registry models.AssetRegistry
	if err := r.db.Where("asset_type = ? AND asset_id = ?", assetType, assetID).First(&registry).Error; err != nil {
		if errors.Is(err, gorm.ErrRecordNotFound) {
			return nil, appErrors.ErrAssetRegistryNotFound
		}
		return nil, err
	}
	return &registry, nil
}

// GetByOwner 查询用户的所有索引记录
func (r *assetRegistryRepository) GetByOwner(ownerUID, starID int64) ([]*models.AssetRegistry, error) {
	if ownerUID <= 0 {
		return nil, errors.New("owner_uid must be greater than 0")
	}
	if starID <= 0 {
		return nil, errors.New("star_id must be greater than 0")
	}
	var registries []*models.AssetRegistry
	if err := r.db.Where("owner_uid = ? AND star_id = ?", ownerUID, starID).
		Order("created_at DESC").
		Find(&registries).Error; err != nil {
		return nil, err
	}
	return registries, nil
}

// GetByOwnerAndType 查询用户指定类型的索引记录
func (r *assetRegistryRepository) GetByOwnerAndType(ownerUID, starID int64, assetType string, limit, offset int) ([]*models.AssetRegistry, error) {
	if ownerUID <= 0 {
		return nil, errors.New("owner_uid must be greater than 0")
	}
	if starID <= 0 {
		return nil, errors.New("star_id must be greater than 0")
	}
	var registries []*models.AssetRegistry
	query := r.db.Where("owner_uid = ? AND star_id = ? AND asset_type = ?", ownerUID, starID, assetType).
		Order("created_at DESC")
	if limit > 0 {
		query = query.Limit(limit)
	}
	if offset > 0 {
		query = query.Offset(offset)
	}
	if err := query.Find(&registries).Error; err != nil {
		return nil, err
	}
	return registries, nil
}

// GetByOwnerAndTypeAndGrade 查询用户指定类型和等级的索引记录
func (r *assetRegistryRepository) GetByOwnerAndTypeAndGrade(ownerUID, starID int64, assetType string, grade int32, limit, offset int) ([]*models.AssetRegistry, error) {
	if ownerUID <= 0 {
		return nil, errors.New("owner_uid must be greater than 0")
	}
	if starID <= 0 {
		return nil, errors.New("star_id must be greater than 0")
	}
	var registries []*models.AssetRegistry
	query := r.db.Where("owner_uid = ? AND star_id = ? AND asset_type = ? AND grade = ?", ownerUID, starID, assetType, grade).
		Order("created_at DESC")
	if limit > 0 {
		query = query.Limit(limit)
	}
	if offset > 0 {
		query = query.Offset(offset)
	}
	if err := query.Find(&registries).Error; err != nil {
		return nil, err
	}
	return registries, nil
}

// GetByOwnerAndTypeAndCategory 查询用户指定类型和分类的索引记录
func (r *assetRegistryRepository) GetByOwnerAndTypeAndCategory(ownerUID, starID int64, assetType string, category string, limit, offset int) ([]*models.AssetRegistry, error) {
	if ownerUID <= 0 {
		return nil, errors.New("owner_uid must be greater than 0")
	}
	if starID <= 0 {
		return nil, errors.New("star_id must be greater than 0")
	}
	var registries []*models.AssetRegistry
	query := r.db.Where("owner_uid = ? AND star_id = ? AND asset_type = ? AND collection_category = ?", ownerUID, starID, assetType, category).
		Order("created_at DESC")
	if limit > 0 {
		query = query.Limit(limit)
	}
	if offset > 0 {
		query = query.Offset(offset)
	}
	if err := query.Find(&registries).Error; err != nil {
		return nil, err
	}
	return registries, nil
}

// GetByOwnerAndTypeAndActivity 查询用户指定类型和活动的索引记录
func (r *assetRegistryRepository) GetByOwnerAndTypeAndActivity(ownerUID, starID int64, assetType string, activityID int64, limit, offset int) ([]*models.AssetRegistry, error) {
	if ownerUID <= 0 {
		return nil, errors.New("owner_uid must be greater than 0")
	}
	if starID <= 0 {
		return nil, errors.New("star_id must be greater than 0")
	}
	var registries []*models.AssetRegistry
	query := r.db.Where("owner_uid = ? AND star_id = ? AND asset_type = ? AND activity_id = ?", ownerUID, starID, assetType, activityID).
		Order("created_at DESC")
	if limit > 0 {
		query = query.Limit(limit)
	}
	if offset > 0 {
		query = query.Offset(offset)
	}
	if err := query.Find(&registries).Error; err != nil {
		return nil, err
	}
	return registries, nil
}

// CountByOwner 统计用户的索引记录数量
func (r *assetRegistryRepository) CountByOwner(ownerUID, starID int64) (int64, error) {
	if ownerUID <= 0 {
		return 0, errors.New("owner_uid must be greater than 0")
	}
	if starID <= 0 {
		return 0, errors.New("star_id must be greater than 0")
	}
	var count int64
	if err := r.db.Model(&models.AssetRegistry{}).
		Where("owner_uid = ? AND star_id = ?", ownerUID, starID).
		Count(&count).Error; err != nil {
		return 0, err
	}
	return count, nil
}

// CountByOwnerAndType 统计用户指定类型的索引记录数量
func (r *assetRegistryRepository) CountByOwnerAndType(ownerUID, starID int64, assetType string) (int64, error) {
	if ownerUID <= 0 {
		return 0, errors.New("owner_uid must be greater than 0")
	}
	if starID <= 0 {
		return 0, errors.New("star_id must be greater than 0")
	}
	var count int64
	if err := r.db.Model(&models.AssetRegistry{}).
		Where("owner_uid = ? AND star_id = ? AND asset_type = ?", ownerUID, starID, assetType).
		Count(&count).Error; err != nil {
		return 0, err
	}
	return count, nil
}

// CountByOwnerAndTypeAndGrade 统计用户指定类型和等级的索引记录数量
func (r *assetRegistryRepository) CountByOwnerAndTypeAndGrade(ownerUID, starID int64, assetType string, grade int32) (int64, error) {
	if ownerUID <= 0 {
		return 0, errors.New("owner_uid must be greater than 0")
	}
	if starID <= 0 {
		return 0, errors.New("star_id must be greater than 0")
	}
	var count int64
	if err := r.db.Model(&models.AssetRegistry{}).
		Where("owner_uid = ? AND star_id = ? AND asset_type = ? AND grade = ?", ownerUID, starID, assetType, grade).
		Count(&count).Error; err != nil {
		return 0, err
	}
	return count, nil
}

// CountByOwnerAndTypeAndCategory 统计用户指定类型和分类的索引记录数量
func (r *assetRegistryRepository) CountByOwnerAndTypeAndCategory(ownerUID, starID int64, assetType string, category string) (int64, error) {
	if ownerUID <= 0 {
		return 0, errors.New("owner_uid must be greater than 0")
	}
	if starID <= 0 {
		return 0, errors.New("star_id must be greater than 0")
	}
	var count int64
	if err := r.db.Model(&models.AssetRegistry{}).
		Where("owner_uid = ? AND star_id = ? AND asset_type = ? AND collection_category = ?", ownerUID, starID, assetType, category).
		Count(&count).Error; err != nil {
		return 0, err
	}
	return count, nil
}

// CountByOwnerAndTypeAndActivity 统计用户指定类型和活动的索引记录数量
func (r *assetRegistryRepository) CountByOwnerAndTypeAndActivity(ownerUID, starID int64, assetType string, activityID int64) (int64, error) {
	if ownerUID <= 0 {
		return 0, errors.New("owner_uid must be greater than 0")
	}
	if starID <= 0 {
		return 0, errors.New("star_id must be greater than 0")
	}
	var count int64
	if err := r.db.Model(&models.AssetRegistry{}).
		Where("owner_uid = ? AND star_id = ? AND asset_type = ? AND activity_id = ?", ownerUID, starID, assetType, activityID).
		Count(&count).Error; err != nil {
		return 0, err
	}
	return count, nil
}

// UpdateLikeCount 更新点赞数
func (r *assetRegistryRepository) UpdateLikeCount(assetID int64, likeCount int32) error {
	if assetID <= 0 {
		return errors.New("asset_id must be greater than 0")
	}
	return r.db.Model(&models.AssetRegistry{}).
		Where("asset_id = ?", assetID).
		Update("like_count", likeCount).Error
}

// UpdateGrade 更新等级
func (r *assetRegistryRepository) UpdateGrade(assetID int64, grade int32) error {
	if assetID <= 0 {
		return errors.New("asset_id must be greater than 0")
	}
	return r.db.Model(&models.AssetRegistry{}).
		Where("asset_id = ?", assetID).
		Update("grade", grade).Error
}

// Delete 删除索引记录
func (r *assetRegistryRepository) Delete(assetID int64) error {
	if assetID <= 0 {
		return errors.New("asset_id must be greater than 0")
	}
	return r.db.Where("asset_id = ?", assetID).Delete(&models.AssetRegistry{}).Error
}

// DeleteByAssetType 删除指定类型的索引记录
func (r *assetRegistryRepository) DeleteByAssetType(assetType string, assetID int64) error {
	if assetType == "" {
		return errors.New("asset_type must not be empty")
	}
	if assetID <= 0 {
		return errors.New("asset_id must be greater than 0")
	}
	return r.db.Where("asset_type = ? AND asset_id = ?", assetType, assetID).
		Delete(&models.AssetRegistry{}).Error
}