package system

import (
	"errors"
	"mime/multipart"
	"strings"
	"sundynix-go/global"
	common "sundynix-go/model/commom/request"
	"sundynix-go/model/system"
	sysReq "sundynix-go/model/system/request"
	"sundynix-go/utils/uniqueid"
	"sundynix-go/utils/upload"

	"go.uber.org/zap"
	"gorm.io/gorm"
)

type OssService struct {
}

var OssServiceApp = new(OssService)

func (o *OssService) Save(file system.Oss) error {
	return global.DB.Create(&file).Error
}

func (o *OssService) Upload(header *multipart.FileHeader) (file system.Oss, err error) {
	instance := upload.OssInstance()
	filepath, key, uploadErr := instance.UploadFile(header)
	if uploadErr != nil {
		return file, uploadErr
	}
	//文件后缀
	s := strings.Split(header.Filename, ".")
	f := system.Oss{
		Id:     uniqueid.GenerateId(),
		Key:    key, // uploads/2025-09-17/
		Name:   header.Filename,
		Suffix: s[len(s)-1],
		Tag:    s[len(s)-1],
		Url:    filepath, // http://127.0.0.1:9000/planting-fun/uploads/2025-09-17/211476f3837fc7acbaebf0f901c1bd68.png
	}
	return f, o.Save(f)

}

func (o *OssService) DeleteFileByIds(ids common.IdsReq) error {
	//循环删除
	instance := upload.OssInstance()
	for _, id := range ids.Ids {
		file, err := o.GetById(id)
		if err != nil {
			return err
		}
		if err = instance.DeleteFile(file.Key); err != nil {
			global.Logger.Error("删除文件失败!", zap.Error(err))
			return err
		}
	}
	err := global.DB.Where("id IN (?)", ids.Ids).Delete(&system.Oss{}).Error
	return err
}

func (o *OssService) GetById(id string) (system.Oss, error) {
	var file system.Oss
	err := global.DB.Where("id = ?", id).First(&file).Error
	//不存在的时候不要返回错误，而是返回nil
	if errors.Is(err, gorm.ErrRecordNotFound) {
		return file, nil
	}
	return file, err
}

func (o *OssService) GetFileList(info sysReq.GetOssFileList) (list interface{}, total int64, err error) {
	limit := info.PageSize
	offset := info.PageSize * (info.Current - 1)
	db := global.DB.Model(&system.Oss{})
	var files []system.Oss
	if info.Name != "" {
		db = db.Where("name LIKE ?", "%"+info.Name+"%")
	}
	err = db.Count(&total).Error
	if err != nil {
		return
	}
	err = db.Limit(limit).Offset(offset).Order("created_at desc").Find(&files).Error
	return files, total, err
}