package db

import (
	"github.com/gin-gonic/gin"
	"log"
	"strconv"
)

// newWithProperties Creates a new file with the given properties
func (file *File) newWithProperties(name string, url string, comment string, blob string) (*File, error) {
	file = &File{
		Name:    name,
		Comment: &comment,
		Blob:    blob,
    Properties: FileProperties{
      Url: url,
    },
	}
	if err := conn.Create(file).Error; err != nil {
		return file, err

	}

	return file, nil
}

// creates new empty file
func (file *File) new() (*File,error) {
  if err := conn.Create(file).Error; err != nil {
    return file, err
  }
  return file, nil
}

// save writes the given file to the Database
func (file *File) Save() error {
  if err := conn.Save(file).Error; err != nil {
    return err
  }
  return nil
}

func (file *File) delete() error {
  if err := conn.Delete(file).Error; err != nil {
    return err
  }
  return nil
}

// Status() gives the status of the file because GORM currently doesn't do ManyToOne, so to make this work well I'll
// have to ditch the ORM and go raw SQL
func (file *File) Status() (Status) {
  var status Status
  if err := conn.First(&status, file.StatusID); err != nil {
    log.Printf("Could not get Status of File %d: %v", file.ID, err)
    status.ID = 18446744073709551615
    status.Name = "Unknown"
  }
  return status
}

func (file *File) Creator() (User) {
  var user User
  if err := conn.First(&user, file.CreatorID); err != nil {
    log.Printf("Could not get Creator of File %d: %v", file.ID, err)
    user.ID = 18446744073709551615
    user.Name = "Unknown"
  }
  return user
}


func (file *File) Assignee() (User) {
  var user User
  if err := conn.First(&user, file.AssigneeID); err != nil {
    log.Printf("Could not get Creator of File %d: %v", file.ID, err)
    user.ID = 18446744073709551615
    user.Name = "Unknown"
  }
  return user
}

func CreateFile(name string, url string, comment string, blob string) (uint, error) {
	file := File{
		Name:    name,
		Comment: &comment,
		Blob:    blob,
    Properties: FileProperties{
      Url: url,
    },
	}
	if err := conn.Create(&file).Error; err != nil {
		return 0, err
	}
	return file.ID, nil
}

func UpdateOriginalName(id uint, originalName string) {
	var file File
	conn.First(&file, id)
	file.Properties.OriginalName = originalName
	conn.Save(&file)
}

func SetSimpleAttributes(id uint, mime string, size int64, sha256 string, sha1 string, md5 string, fileCmd string, extension string) {
	var file File
	conn.First(&file, id)
	file.Properties.Mime = mime
	file.Properties.Size = size
	file.Properties.Sha256 = sha256
	file.Properties.Sha1 = sha1
	file.Properties.Md5 = md5
	file.Properties.FileCmd = fileCmd
	file.Properties.Extension = extension
	conn.Save(&file)
}

func CountFilesEntries() int64 {
	var count int64
	var file File
	conn.Find(&file).Count(&count)
	return count
}

func GetFileByID(id uint) *File {
	var file File
	conn.First(&file, id)
	return &file
}

func GetFileByBlob(blob string) *File {
	var file File
	conn.Where("blob = ?", blob).First(&file)
	return &file
}

func GetFileBlob(id uint) string {
	var file File
	conn.Select("blob").First(&file, id)
	return file.Blob
}

func GetFileList(page int, count int, c *gin.Context) ([]*File, error) {
	query, err := searchQueryBuilder(c)
	if err != nil {
		return nil, err
	}
	var list []*File
	conn.Limit(page * count).Where(query).Find(&list)

	return list, nil
}

func searchQueryBuilder(c *gin.Context) (*File, error) {
	// TODO Add parsing for all File properties
	var query File
	if c.Query("id") != "" {
		id, err := strconv.ParseUint(c.Query("id"), 10, 0)
		if err != nil {
			log.Printf("Could not Convert ID from filter to int: %v", err)
			return nil, err
		}
		query.ID = uint(id)
	}
	if c.Query("name") != "" {
		query.Name = c.Query("name")
	}

	return &query, nil
}