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extern crate rustc_serialize;
use rustc_serialize::{json, Decodable, Decoder};
#[derive(Debug)]
pub enum Push {
Mirror {
notification_id: i32,
title: String,
body: String,
application_name: String,
package_name: String,
icon: String
},
Dismissal {
notification_id: i32
}
}
#[derive(Debug)]
pub enum Message {
Nop,
Push(Push)
}
impl Message {
pub fn parse(message: &str) -> Option<Message> {
let json = json::Json::from_str(message).unwrap();
let mut decoder = json::Decoder::new(json);
let result : Result<Message, _> = Decodable::decode(&mut decoder);
result.ok()
}
}
impl Decodable for Push {
fn decode<D: Decoder>(d: &mut D) -> Result<Push, D::Error> {
d.read_struct("root", 0, |d| {
let type_ : String = try!(d.read_struct_field("type", 0, Decodable::decode));
match type_.as_ref() {
"mirror" => {
let id = try!(
d.read_struct_field("notification_id", 0, Decodable::decode));
let title = try!(
d.read_struct_field("title", 0, Decodable::decode));
let body = try!(
d.read_struct_field("body", 0, Decodable::decode));
let app_name = try!(
d.read_struct_field("application_name", 0, Decodable::decode));
let package_name = try!(
d.read_struct_field("package_name", 0, Decodable::decode));
let icon = try!(
d.read_struct_field("icon", 0, Decodable::decode));
Ok(Push::Mirror {
title: title,
body: body,
application_name: app_name,
package_name: package_name,
notification_id: id,
icon: icon
})
}
"dismissal" => {
let id = try!(
d.read_struct_field("notification_id", 0, Decodable::decode));
Ok(Push::Dismissal {
notification_id: id
})
}
_ => {
let err_msg = format!(
"Invalid value for push type: {} (expected 'mirror' or 'dismissal')",
type_);
Err(d.error(err_msg.as_ref()))
}
}
})
}
}
impl Decodable for Message {
fn decode<D: Decoder>(d: &mut D) -> Result<Message, D::Error> {
d.read_struct("root", 0, |d| {
let type_ : String = try!(d.read_struct_field("type", 0, Decodable::decode));
match type_.as_ref() {
"nop" => Ok(Message::Nop),
"push" => {
d.read_struct_field("push", 0, |d| {
Ok(Message::Push(try!(Decodable::decode(d))))
})
},
_ => {
let err_msg = format!(
"Invalid value for message type: {}",
type_);
Err(d.error(err_msg.as_ref()))
}
}
})
}
}
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