/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */

use crate::dom::bindings::codegen::Bindings::RTCSessionDescriptionBinding;
use crate::dom::bindings::codegen::Bindings::RTCSessionDescriptionBinding::RTCSessionDescriptionMethods;
use crate::dom::bindings::codegen::Bindings::RTCSessionDescriptionBinding::{
    RTCSdpType, RTCSessionDescriptionInit,
};
use crate::dom::bindings::error::Fallible;
use crate::dom::bindings::reflector::reflect_dom_object;
use crate::dom::bindings::reflector::{DomObject, Reflector};
use crate::dom::bindings::root::DomRoot;
use crate::dom::bindings::str::DOMString;
use crate::dom::globalscope::GlobalScope;
use crate::dom::window::Window;
use dom_struct::dom_struct;
use js::conversions::ToJSValConvertible;
use js::jsapi::{JSContext, JSObject};
use js::jsval::UndefinedValue;
use std::ptr::NonNull;

#[dom_struct]
pub struct RTCSessionDescription {
    reflector: Reflector,
    ty: RTCSdpType,
    sdp: DOMString,
}

impl RTCSessionDescription {
    pub fn new_inherited(ty: RTCSdpType, sdp: DOMString) -> RTCSessionDescription {
        RTCSessionDescription {
            reflector: Reflector::new(),
            ty,
            sdp,
        }
    }

    pub fn new(
        global: &GlobalScope,
        ty: RTCSdpType,
        sdp: DOMString,
    ) -> DomRoot<RTCSessionDescription> {
        reflect_dom_object(
            Box::new(RTCSessionDescription::new_inherited(ty, sdp)),
            global,
            RTCSessionDescriptionBinding::Wrap,
        )
    }

    pub fn Constructor(
        window: &Window,
        config: &RTCSessionDescriptionInit,
    ) -> Fallible<DomRoot<RTCSessionDescription>> {
        Ok(RTCSessionDescription::new(
            &window.global(),
            config.type_,
            config.sdp.clone(),
        ))
    }
}

impl RTCSessionDescriptionMethods for RTCSessionDescription {
    /// https://w3c.github.io/webrtc-pc/#dom-rtcsessiondescription-type
    fn Type(&self) -> RTCSdpType {
        self.ty
    }

    /// https://w3c.github.io/webrtc-pc/#dom-rtcsessiondescription-sdp
    fn Sdp(&self) -> DOMString {
        self.sdp.clone()
    }

    #[allow(unsafe_code)]
    /// https://w3c.github.io/webrtc-pc/#dom-rtcsessiondescription-tojson
    unsafe fn ToJSON(&self, cx: *mut JSContext) -> NonNull<JSObject> {
        let init = RTCSessionDescriptionInit {
            type_: self.ty,
            sdp: self.sdp.clone(),
        };
        rooted!(in(cx) let mut jsval = UndefinedValue());
        init.to_jsval(cx, jsval.handle_mut());
        NonNull::new(jsval.to_object()).unwrap()
    }
}