added test for converting image uri to files, updated debug script

1 files changed, 40 insertions, 0 deletions

diff --git a/dichroism/src/image_api.rs b/dichroism/src/image_api.rs
new file mode 100644
index 0000000..d1649d5
--- /dev/null
+++ b/dichroism/src/image_api.rs
@@ -0,0 +1,40 @@
+use crate::result::Result;
+use base64::decode;
+use regex::Regex;
+
+lazy_static! {
+    static ref DATA_URI_RE: Regex =
+        Regex::new("^data:image/(png|jpeg);base64,(?P<data>.+)").expect("Couldn't parse Regex!");
+}
+
+pub fn data_uri_to_files(uri: &str) -> Result<()> {
+    let caps = if let Some(c) = DATA_URI_RE.captures(uri) {
+        c
+    } else {
+        todo!();
+    };
+
+    let data = caps
+        .name("data")
+        .expect("Data URI data extraction should never fail.")
+        .as_str();
+
+    let bytes = decode(data)?;
+    let img = image::load_from_memory(&bytes)?;
+    img.save("test_full.jpg")?;
+    let thumb = img.thumbnail(200, 200);
+    thumb.save("test_thumbnail.jpg")?;
+    Ok(())
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    const TEST_DATA_URI: &str = include_str!("unit_test_data/img_data_uri.txt");
+
+    #[test]
+    fn test_data_uri_to_files() {
+        data_uri_to_files(TEST_DATA_URI).unwrap();
+    }
+}