Move keymaster to core

core/src/keymaster.rs

@@ -0,0 +1,26 @@
+use futures::Future;
+use serde_json;
+
+use mercury::MercuryError;
+use session::Session;
+
+#[derive(Deserialize, Debug, Clone)]
+#[serde(rename_all = "camelCase")]
+pub struct Token {
+    pub access_token: String,
+    pub expires_in: u32,
+    pub token_type: String,
+    pub scope: Vec<String>,
+}
+
+pub fn get_token(session: &Session, client_id: &str, scopes: &str) -> Box<Future<Item = Token, Error = MercuryError>> {
+    let url = format!("hm://keymaster/token/authenticated?client_id={}&scope={}",
+                      client_id, scopes);
+    Box::new(session.mercury().get(url).map(move |response| {
+        let data = response.payload.first().expect("Empty payload");
+        let data = String::from_utf8(data.clone()).unwrap();
+        let token : Token = serde_json::from_str(&data).unwrap();
+
+        token
+    }))
+}