Move library to a separate crate

Keep the binaries in the root crate, and add a new crate for the
`github-suggestion` library.

I want to add some library code to the CLI programs to extract common
functionality between the different binaries.

1 files changed, 58 insertions, 0 deletions

diff --git a/github-suggestion/src/client.rs b/github-suggestion/src/client.rs
new file mode 100644
index 0000000..c6ae1f1
--- /dev/null
+++ b/github-suggestion/src/client.rs
@@ -0,0 +1,58 @@
+use github_rs::client::{Executor, Github};
+use serde_json::Value;
+use thiserror::Error;
+
+use crate::suggestion::Suggestion;
+
+
+#[derive(Debug, Error)]
+pub enum Error {
+    #[error("GitHub client error: {0}")]
+    Github(String),
+
+    #[error("Unable to deserialize")]
+    Deserialize(#[from] serde_json::error::Error),
+}
+
+
+pub struct Client<'a> {
+    client: Github,
+    owner: &'a str,
+    repo: &'a str,
+}
+
+impl<'a> Client<'a> {
+    pub fn new(
+        token: &str,
+        owner: &'a str, repo: &'a str,
+    ) -> Result<Self, Error> {
+        let client = match Github::new(&token) {
+            Ok(g) => g,
+            Err(e) => return Err(Error::Github(e.to_string())),
+        };
+
+        Ok(Client { client, owner, repo })
+    }
+
+    pub fn fetch(&self, id: &str) -> Result<Suggestion, Error> {
+        let response = self.client
+            .get()
+            .repos()
+            .owner(self.owner)
+            .repo(self.repo)
+            .pulls()
+            .comments()
+            .id(id)
+            .execute::<Value>();
+
+        match response {
+            Ok((_, _, Some(json))) => {
+                let suggestion = serde_json::from_value(json)?;
+
+                Ok(suggestion)
+            },
+            Ok((_, _, None)) => Err(Error::Github("no response".to_owned())),
+            Err(e) => Err(Error::Github(e.to_string())),
+        }
+    }
+}