1 files changed, 54 insertions, 0 deletions
diff --git a/lib/src/cid.rs b/lib/src/cid.rs
new file mode 100644
index 0000000..2957cc5
--- /dev/null
+++ b/lib/src/cid.rs
@@ -0,0 +1,54 @@
+use anyhow::Result;
+
+/// Our own CID type
+///
+/// Right now the ipfs_api crate does not use a CID type in its interface... hence we would need to
+/// convert back-and-forth between String and cid::Cid,... but that's tedious.
+///
+/// Hence we just create our own "Cid type" and use that as long as the crate API is stringly
+/// typed.
+#[derive(Clone, Debug, Eq, PartialEq, Hash, serde::Serialize, serde::Deserialize)]
+#[serde(transparent)]
+pub struct Cid(String);
+
+impl AsRef<str> for Cid {
+    fn as_ref(&self) -> &str {
+        self.0.as_ref()
+    }
+}
+
+pub trait TryToCid {
+    fn try_to_cid(self) -> Result<Cid>;
+}
+
+impl daglib::NodeId for Cid {
+}
+
+/// Helper function that can be tested
+///
+/// Converts a String to a Cid
+#[cfg(not(test))]
+fn string_to_cid(s: String) -> Result<Cid> {
+    string_to_cid_impl(s)
+}
+
+#[cfg(test)]
+pub fn string_to_cid(s: String) -> Result<Cid> {
+    string_to_cid_impl(s)
+}
+
+fn string_to_cid_impl(s: String) -> Result<Cid> {
+    Ok(Cid(s))
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_string_to_cid() {
+        let s = String::from("QmY2T5EfgLn8qWCt8eus6VX1gJuAp1nmUSdmoehgMxznAf");
+        let r = string_to_cid(s);
+        assert!(r.is_ok(), "Not OK = {:?}", r);
+    }
+}