tsk-45: Identify type of Song (#48)

Closes #45

Reviewed-on: #48
Co-authored-by: phoenix <kundeng00@pm.me>
Co-committed-by: phoenix <kundeng00@pm.me>

src/detection/coverart.rs

@@ -1,8 +1,16 @@
 /// Gets the file type of a CoverArt given it's path
-pub fn file_type_from_filepath(filepath: &str) -> Result<String, std::io::Error> {
+pub fn file_type_from_filepath(
+    filepath: &str,
+) -> Result<crate::detection::FileType, std::io::Error> {
     match imghdr::from_file(filepath) {
-        Ok(Some(imghdr::Type::Jpeg)) => Ok(String::from("jpeg")),
-        Ok(Some(imghdr::Type::Png)) => Ok(String::from("png")),
+        Ok(Some(imghdr::Type::Jpeg)) => Ok(crate::detection::FileType {
+            mime: String::from(constants::mime::JPEG),
+            file_type: String::from(constants::JPEG_TYPE),
+        }),
+        Ok(Some(imghdr::Type::Png)) => Ok(crate::detection::FileType {
+            mime: String::from(constants::mime::PNG),
+            file_type: String::from(constants::PNG_TYPE),
+        }),
         Ok(None) => Err(std::io::Error::other("Image file not supported")),
         Err(err) => Err(err),
         _ => Err(std::io::Error::other("Image file not supported")),
@@ -10,15 +18,32 @@ pub fn file_type_from_filepath(filepath: &str) -> Result<String, std::io::Error>
 }
 
 /// Gets the file type of a CoverArt given it's data
-pub fn file_type_from_data(data: &Vec<u8>) -> Result<String, std::io::Error> {
+pub fn file_type_from_data(data: &Vec<u8>) -> Result<crate::detection::FileType, std::io::Error> {
     match imghdr::from_bytes(data) {
-        Some(imghdr::Type::Jpeg) => Ok(String::from("jpeg")),
-        Some(imghdr::Type::Png) => Ok(String::from("png")),
+        Some(imghdr::Type::Jpeg) => Ok(crate::detection::FileType {
+            mime: String::from(constants::mime::JPEG),
+            file_type: String::from(constants::JPEG_TYPE),
+        }),
+        Some(imghdr::Type::Png) => Ok(crate::detection::FileType {
+            mime: String::from(constants::mime::PNG),
+            file_type: String::from(constants::PNG_TYPE),
+        }),
         None => Err(std::io::Error::other("Image file not supported")),
         _ => Err(std::io::Error::other("Image file not supported")),
     }
 }
 
+pub mod constants {
+    pub const PNG_TYPE: &str = "png";
+    pub const JPEG_TYPE: &str = "jpeg";
+    pub const JPG_TYPE: &str = "jpg";
+
+    pub mod mime {
+        pub const JPEG: &str = "image/jpeg";
+        pub const PNG: &str = "image/png";
+    }
+}
+
 #[cfg(test)]
 mod tests {
     #[test]
@@ -30,7 +55,8 @@ mod tests {
         match super::file_type_from_filepath(&filepath) {
             Ok(filetype) => {
                 assert_eq!(
-                    filetype, "png",
+                    filetype.file_type,
+                    super::constants::PNG_TYPE,
                     "The file type of the CoverArt should have been png"
                 );
             }
@@ -50,7 +76,8 @@ mod tests {
         match super::file_type_from_data(&data) {
             Ok(filetype) => {
                 assert_eq!(
-                    filetype, "png",
+                    filetype.file_type,
+                    super::constants::PNG_TYPE,
                     "The file type of the CoverArt should have been png"
                 );
             }

src/detection/mod.rs

@@ -1 +1,8 @@
 pub mod coverart;
+pub mod song;
+
+#[derive(Debug, Default)]
+pub struct FileType {
+    pub mime: String,
+    pub file_type: String,
+}

src/detection/song.rs

@@ -0,0 +1,90 @@
+/// Gets the file type of a Song from it's path
+pub fn file_type_from_filepath(
+    filepath: &str,
+) -> Result<crate::detection::FileType, std::io::Error> {
+    match infer::get_from_path(filepath) {
+        Ok(Some(kind)) => {
+            let mime = kind.mime_type();
+            if mime == constants::mime::FLAC {
+                Ok(crate::detection::FileType {
+                    mime: String::from(mime),
+                    file_type: String::from(constants::FLAC_TYPE),
+                })
+            } else {
+                Err(std::io::Error::other("Unsupported file type"))
+            }
+        }
+        Ok(None) => Err(std::io::Error::other("File type not determined")),
+        Err(err) => Err(err),
+    }
+}
+
+/// Gets the file type of a Song given it's data
+pub fn file_type_from_data(data: &[u8]) -> Result<crate::detection::FileType, std::io::Error> {
+    match infer::get(data) {
+        Some(kind) => {
+            let mime = kind.mime_type();
+            if mime == constants::mime::FLAC {
+                Ok(crate::detection::FileType {
+                    mime: String::from(mime),
+                    file_type: String::from(constants::FLAC_TYPE),
+                })
+            } else {
+                Err(std::io::Error::other("Unsupported file type"))
+            }
+        }
+        None => Err(std::io::Error::other("File type not determined")),
+    }
+}
+
+pub mod constants {
+    pub const FLAC_TYPE: &str = "flac";
+
+    pub mod mime {
+        pub const FLAC: &str = "audio/x-flac";
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn test_song_file_type() {
+        let directory = String::from(crate::test_util::util::TESTFILEDIRECTORY);
+        let filename = String::from("track01.flac");
+        let filepath = format!("{directory}/{filename}");
+
+        match super::file_type_from_filepath(&filepath) {
+            Ok(filetype) => {
+                assert_eq!(
+                    filetype.file_type,
+                    crate::detection::song::constants::FLAC_TYPE,
+                    "Types do not match"
+                )
+            }
+            Err(err) => {
+                assert!(false, "Error: {err:?}")
+            }
+        }
+    }
+
+    #[test]
+    fn test_song_file_type_from_data() {
+        let directory = String::from(crate::test_util::util::TESTFILEDIRECTORY);
+        let filename = String::from("track01.flac");
+        let filepath = format!("{directory}/{filename}");
+        let data = crate::test_util::util::get_data_from_file(&filepath).unwrap();
+
+        match super::file_type_from_data(&data) {
+            Ok(filetype) => {
+                assert_eq!(
+                    filetype.file_type,
+                    crate::detection::song::constants::FLAC_TYPE,
+                    "Types do not match"
+                )
+            }
+            Err(err) => {
+                assert!(false, "Error: {err:?}")
+            }
+        }
+    }
+}