// Package sorting implements Sorting type for interactive table.
package sorting

import "git.burning.moe/celediel/gt/internal/files"

type Sorting int

const (
	Name Sorting = iota + 1
	NameReverse
	Date
	DateReverse
	Path
	PathReverse
	Size
	SizeReverse
	Extension
	ExtensionReverse
	Directory
	DirectoryReverse
)

func (s Sorting) Next() Sorting {
	switch s {
	case DirectoryReverse:
		return Name
	default:
		return s + 1
	}
}

func (s Sorting) Prev() Sorting {
	switch s {
	case Name:
		return DirectoryReverse
	default:
		return s - 1
	}
}

func (s Sorting) String() string {
	switch s {
	case Name:
		return "name ↑"
	case NameReverse:
		return "name ↓"
	case Date:
		return "date ↑"
	case DateReverse:
		return "date ↓"
	case Path:
		return "path ↑"
	case PathReverse:
		return "path ↓"
	case Size:
		return "size ↑"
	case SizeReverse:
		return "size ↓"
	case Extension:
		return "extension ↑"
	case ExtensionReverse:
		return "extension ↓"
	case Directory:
		return "directories ↑"
	case DirectoryReverse:
		return "directories ↓"
	default:
		return "0"
	}
}

func (s Sorting) Sorter() func(a, b files.File) int {
	switch s {
	case Name:
		return files.SortByName
	case NameReverse:
		return files.SortByNameReverse
	case Date:
		return files.SortByModified
	case DateReverse:
		return files.SortByModifiedReverse
	case Path:
		return files.SortByPath
	case PathReverse:
		return files.SortByPathReverse
	case Size:
		return files.SortBySize
	case SizeReverse:
		return files.SortBySizeReverse
	case Extension:
		return files.SortByExtension
	case ExtensionReverse:
		return files.SortByExtensionReverse
	case Directory:
		return files.SortDirectoriesFirst
	case DirectoryReverse:
		return files.SortDirectoriesLast
	default:
		return files.SortByName
	}
}