feat: add custom error types, remove anyhow

src/error.rs

@@ -0,0 +1,91 @@
+use std::borrow::Cow;
+
+pub(crate) type Result<T> = core::result::Result<T, Error>;
+
+/// Custom error type for the RustyPipe library
+#[derive(thiserror::Error, Debug)]
+#[non_exhaustive]
+pub enum Error {
+    /// Error extracting content from YouTube
+    #[error("extraction error: {0}")]
+    Extraction(#[from] ExtractionError),
+    /// Error from the deobfuscater
+    #[error("deobfuscator error: {0}")]
+    Deobfuscation(#[from] DeobfError),
+    /// Error from the video downloader
+    #[error("download error: {0}")]
+    Download(#[from] DownloadError),
+    /// File IO error
+    #[error(transparent)]
+    Io(#[from] std::io::Error),
+    /// Error from the HTTP client
+    #[error("http error: {0}")]
+    Http(#[from] reqwest::Error),
+    #[error("http status code: {0}")]
+    HttpStatus(u16),
+    #[error("error: {0}")]
+    Other(Cow<'static, str>),
+}
+
+/// Error that occurred during the initialization
+/// or use of the YouTube URL signature deobfuscator.
+#[derive(thiserror::Error, Debug)]
+#[non_exhaustive]
+pub enum DeobfError {
+    /// Error from the HTTP client
+    #[error("http error: {0}")]
+    Http(#[from] reqwest::Error),
+    /// Error during JavaScript execution
+    #[error("js execution error: {0}")]
+    JavaScript(#[from] quick_js::ExecutionError),
+    #[error("js parsing: {0}")]
+    JsParser(#[from] ress::error::Error),
+    /// Could not extract certain data
+    #[error("could not extract {0}")]
+    Extraction(&'static str),
+    #[error("error: {0}")]
+    Other(&'static str),
+}
+
+/// Error from the video downloader
+#[derive(thiserror::Error, Debug)]
+#[non_exhaustive]
+pub enum DownloadError {
+    /// Error from the HTTP client
+    #[error("http error: {0}")]
+    Http(#[from] reqwest::Error),
+    /// File IO error
+    #[error(transparent)]
+    Io(#[from] std::io::Error),
+    #[error("FFmpeg error: {0}")]
+    Ffmpeg(Cow<'static, str>),
+    #[error("Progressive download error: {0}")]
+    Progressive(Cow<'static, str>),
+    #[error("input error: {0}")]
+    Input(Cow<'static, str>),
+    #[error("error: {0}")]
+    Other(Cow<'static, str>),
+}
+
+/// Error extracting content from YouTube
+#[derive(thiserror::Error, Debug)]
+#[non_exhaustive]
+pub enum ExtractionError {
+    #[error("Video cant be played because of {0}. Reason (from YT): {1}")]
+    VideoUnavailable(&'static str, String),
+    #[error("Video is age restricted")]
+    VideoAgeRestricted,
+    #[error("deserialization error: {0}")]
+    Deserialization(#[from] serde_json::Error),
+    #[error("got invalid data from YT: {0}")]
+    InvalidData(Cow<'static, str>),
+    #[error("got wrong result from YT: {0}")]
+    WrongResult(String),
+    #[error("Warnings during deserialization/mapping")]
+    Warnings,
+}
+
+/// Internal error
+#[derive(thiserror::Error, Debug)]
+#[error("mapping error: {0}")]
+pub struct MappingError(pub(crate) Cow<'static, str>);