//! [PUT /_matrix/federation/v1/3pid/onbind](https://matrix.org/docs/spec/server_server/r0.1.4#put-matrix-federation-v1-3pid-onbind)

use std::collections::BTreeMap;

use ruma_api::ruma_api;
use ruma_common::thirdparty::Medium;
use ruma_identifiers::{RoomId, ServerName, ServerSigningKeyId, UserId};
use serde::{Deserialize, Serialize};

ruma_api! {
    metadata: {
        description: "Used by identity servers to notify the homeserver that one of its users has bound a third party identifier successfully",
        method: PUT,
        name: "bind_callback",
        path: "/_matrix/federation/v1/3pid/onbind",
        rate_limited: false,
        authentication: None,
    }

    request: {
        /// The type of third party identifier.
        ///
        /// Currently only `Medium::Email` is supported.
        pub medium: &'a Medium,

        /// The third party identifier itself.
        ///
        /// For example: an email address.
        pub address: &'a str,

        /// The user that is now bound to the third party identifier.
        pub mxid: &'a UserId,

        /// A list of pending invites that the third party identifier has received.
        pub invites: &'a [ThirdPartyInvite],
    }

    response: {}
}

impl<'a> Request<'a> {
    /// Creates a new `Request` with the given medium, address, user ID and third party invites.
    pub fn new(
        medium: &'a Medium,
        address: &'a str,
        mxid: &'a UserId,
        invites: &'a [ThirdPartyInvite],
    ) -> Self {
        Self { medium, address, mxid, invites }
    }

    /// Creates a new `Request` with the given email address, user ID and third party invites.
    pub fn email(address: &'a str, mxid: &'a UserId, invites: &'a [ThirdPartyInvite]) -> Self {
        Self::new(&Medium::Email, address, mxid, invites)
    }
}

/// A pending invite the third party identifier has received.
#[derive(Debug, Clone, Deserialize, Serialize)]
#[cfg_attr(not(feature = "unstable-exhaustive-types"), non_exhaustive)]
pub struct ThirdPartyInvite {
    /// The type of third party invite issues.
    ///
    /// Currently only `Medium::Email` is used.
    pub medium: Medium,

    /// The third party identifier that received the invite.
    pub address: String,

    /// The now-bound user ID that received the invite.
    pub mxid: UserId,

    /// The room ID the invite is valid for.
    pub room_id: Box<RoomId>,

    /// The user ID that sent the invite.
    pub sender: UserId,

    /// Signature from the identity server using a long-term private key.
    pub signed: BTreeMap<Box<ServerName>, BTreeMap<ServerSigningKeyId, String>>,
}

impl ThirdPartyInvite {
    /// Creates a new third party invite with the given parameters.
    pub fn new(
        address: String,
        mxid: UserId,
        room_id: Box<RoomId>,
        sender: UserId,
        signed: BTreeMap<Box<ServerName>, BTreeMap<ServerSigningKeyId, String>>,
    ) -> Self {
        Self { medium: Medium::Email, address, mxid, room_id, sender, signed }
    }
}