Add google constructor

examples/google.rs

@@ -3,14 +3,13 @@ extern crate inth_oauth2;
 use inth_oauth2::Client;
 
 fn main() {
-    let client = Client {
-        authorization_uri: String::from("https://accounts.google.com/o/oauth2/auth"),
-        client_id: String::from("143225766783-ip2d9qv6sdr37276t77luk6f7bhd6bj5.apps.googleusercontent.com"),
-        client_secret: String::from("3kZ5WomzHFlN2f_XbhkyPd3o"),
-        redirect_uri: Some(String::from("urn:ietf:wg:oauth:2.0:oob")),
-    };
+    let client = Client::google(
+        "143225766783-ip2d9qv6sdr37276t77luk6f7bhd6bj5.apps.googleusercontent.com",
+        "3kZ5WomzHFlN2f_XbhkyPd3o",
+        Some("urn:ietf:wg:oauth:2.0:oob")
+    );
 
-    let auth_uri = client.authorization_uri(
+    let auth_uri = client.auth_uri(
         Some("https://www.googleapis.com/auth/userinfo.email"),
         None
     ).unwrap();

src/client.rs

@@ -0,0 +1,69 @@
+//! OAuth2 client.
+
+use url::{Url, ParseResult};
+
+/// OAuth2 client.
+pub struct Client {
+    auth_uri: String,
+    token_uri: String,
+
+    client_id: String,
+    client_secret: String,
+    redirect_uri: Option<String>,
+}
+
+impl Client {
+    pub fn new<S: Into<String>>(
+        auth_uri: S,
+        token_uri: S,
+        client_id: S,
+        client_secret: S,
+        redirect_uri: Option<S>
+    ) -> Self {
+        Client {
+            auth_uri: auth_uri.into(),
+            token_uri: token_uri.into(),
+
+            client_id: client_id.into(),
+            client_secret: client_secret.into(),
+            redirect_uri: redirect_uri.map(Into::<String>::into),
+        }
+    }
+
+    pub fn google<S: Into<String>>(
+        client_id: S,
+        client_secret: S,
+        redirect_uri: Option<S>
+    ) -> Self {
+        Client {
+            auth_uri: String::from("https://accounts.google.com/o/oauth2/auth"),
+            token_uri: String::from("https://accounts.google.com/o/oauth2/token"),
+
+            client_id: client_id.into(),
+            client_secret: client_secret.into(),
+            redirect_uri: redirect_uri.map(Into::<String>::into),
+        }
+    }
+
+    pub fn auth_uri(&self, scope: Option<&str>, state: Option<&str>) -> ParseResult<String> {
+        let mut uri = try!(Url::parse(&self.auth_uri));
+
+        let mut query_pairs = vec![
+            ("response_type", "code"),
+            ("client_id", &self.client_id),
+        ];
+        if let Some(ref redirect_uri) = self.redirect_uri {
+            query_pairs.push(("redirect_uri", redirect_uri));
+        }
+        if let Some(scope) = scope {
+            query_pairs.push(("scope", scope));
+        }
+        if let Some(state) = state {
+            query_pairs.push(("state", state));
+        }
+
+        uri.set_query_from_pairs(query_pairs.iter());
+
+        Ok(uri.serialize())
+    }
+}

src/lib.rs

@@ -1,36 +1,4 @@
 extern crate url;
 
-use url::{Url, ParseResult};
-
-/// OAuth2 client.
-pub struct Client {
-    pub authorization_uri: String,
-
-    pub client_id: String,
-    pub client_secret: String,
-    pub redirect_uri: Option<String>,
-}
-
-impl Client {
-    pub fn authorization_uri(&self, scope: Option<&str>, state: Option<&str>) -> ParseResult<String> {
-        let mut uri = try!(Url::parse(&self.authorization_uri));
-
-        let mut query_pairs = vec![
-            ("response_type", "code"),
-            ("client_id", &self.client_id),
-        ];
-        if let Some(ref redirect_uri) = self.redirect_uri {
-            query_pairs.push(("redirect_uri", redirect_uri));
-        }
-        if let Some(scope) = scope {
-            query_pairs.push(("scope", scope));
-        }
-        if let Some(state) = state {
-            query_pairs.push(("state", state));
-        }
-
-        uri.set_query_from_pairs(query_pairs.iter());
-
-        Ok(uri.serialize())
-    }
-}
+pub use client::Client;
+mod client;