1use std::fmt;
2use std::io;
3
4use image::ImageError;
5
6#[derive(Debug)]
7pub enum ThumbnailError {
8    MissingFileName,
9    ImageOpenError(ImageError),
10    ImageSaveError(ImageError),
11    CommandFailed(String),
12    Utf8Error(std::str::Utf8Error),
13    PathConversionError,
14    SameInputOutputPath,
15    IoError(std::io::Error),
16}
17
18impl fmt::Display for ThumbnailError {
19    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
20        match self {
21            ThumbnailError::MissingFileName => write!(f, "Image path is missing a file name"),
22            ThumbnailError::ImageOpenError(e) => write!(f, "Failed to open image: {}", e),
23            ThumbnailError::ImageSaveError(e) => write!(f, "Failed to save thumbnail: {}", e),
24            ThumbnailError::CommandFailed(msg) => write!(f, "ffmpeg command failed: {}", msg),
25            ThumbnailError::Utf8Error(e) => write!(f, "Failed to decode ffmpeg output: {}", e),
26            ThumbnailError::PathConversionError => write!(f, "Failed to convert path to string"),
27            ThumbnailError::SameInputOutputPath => write!(
28                f,
29                "Cannot write thumbnail to the same path as the original image"
30            ),
31            ThumbnailError::IoError(e) => write!(f, "I/O error: {}", e),
32        }
33    }
34}
35
36impl std::error::Error for ThumbnailError {}
37
38impl From<ImageError> for ThumbnailError {
39    fn from(err: ImageError) -> Self {
40        ThumbnailError::ImageOpenError(err)
41    }
42}
43
44impl From<std::str::Utf8Error> for ThumbnailError {
45    fn from(err: std::str::Utf8Error) -> Self {
46        ThumbnailError::Utf8Error(err)
47    }
48}
49
50impl From<io::Error> for ThumbnailError {
51    fn from(err: io::Error) -> Self {
52        ThumbnailError::IoError(err)
53    }
54}