Move the builders to the utils

The builders aren't a large enough portion of the library to deserve
their own root-level module, so move them to the `utils` module.

Additionally, split them into separate files, as the library will be
receiving more builders and the single-file pattern was getting rather
large.

1 files changed, 53 insertions, 0 deletions

diff --git a/src/utils/builder/edit_guild.rs b/src/utils/builder/edit_guild.rs
new file mode 100644
index 0000000..3ea9aaa
--- /dev/null
+++ b/src/utils/builder/edit_guild.rs
@@ -0,0 +1,53 @@
+use serde_json::builder::ObjectBuilder;
+use serde_json::Value;
+use std::default::Default;
+use ::model::{ChannelId, Region, VerificationLevel};
+
+pub struct EditGuild(pub ObjectBuilder);
+
+impl EditGuild {
+    pub fn afk_channel<C: Into<ChannelId>>(self, channel: Option<C>) -> Self {
+        EditGuild(match channel {
+            Some(channel) => self.0.insert("afk_channel_id", channel.into().0),
+            None => self.0.insert("afk-channel_id", Value::Null),
+        })
+    }
+
+    pub fn afk_timeout(self, timeout: u64) -> Self {
+        EditGuild(self.0.insert("afk_timeout", timeout))
+    }
+
+    pub fn icon(self, icon: Option<&str>) -> Self {
+        EditGuild(self.0
+            .insert("icon",
+                    icon.map_or_else(|| Value::Null,
+                                     |x| Value::String(x.to_owned()))))
+    }
+
+    pub fn name(self, name: &str) -> Self {
+        EditGuild(self.0.insert("name", name))
+    }
+
+    pub fn region(self, region: Region) -> Self {
+        EditGuild(self.0.insert("region", region.name()))
+    }
+
+    pub fn splash(self, splash: Option<&str>) -> Self {
+        EditGuild(self.0
+            .insert("splash",
+                    splash.map_or_else(|| Value::Null,
+                                       |x| Value::String(x.to_owned()))))
+    }
+
+    pub fn verification_level<V>(self, verification_level: V) -> Self
+        where V: Into<VerificationLevel> {
+        EditGuild(self.0.insert("verification_level",
+                                verification_level.into().num()))
+    }
+}
+
+impl Default for EditGuild {
+    fn default() -> EditGuild {
+        EditGuild(ObjectBuilder::new())
+    }
+}