// Copyright (c) 2020 Tulir Asokan
//
// 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 http://mozilla.org/MPL/2.0/.

package event

import (
	"encoding/json"

	"maunium.net/go/mautrix/id"
)

// Membership is an enum specifying the membership state of a room member.
type Membership string

func (ms Membership) IsInviteOrJoin() bool {
	return ms == MembershipJoin || ms == MembershipInvite
}

func (ms Membership) IsLeaveOrBan() bool {
	return ms == MembershipLeave || ms == MembershipBan
}

// The allowed membership states as specified in spec section 10.5.5.
const (
	MembershipJoin   Membership = "join"
	MembershipLeave  Membership = "leave"
	MembershipInvite Membership = "invite"
	MembershipBan    Membership = "ban"
	MembershipKnock  Membership = "knock"
)

// MemberEventContent represents the content of a m.room.member state event.
// https://matrix.org/docs/spec/client_server/r0.6.0#m-room-member
type MemberEventContent struct {
	Membership       Membership          `json:"membership"`
	AvatarURL        id.ContentURIString `json:"avatar_url,omitempty"`
	Displayname      string              `json:"displayname,omitempty"`
	IsDirect         bool                `json:"is_direct,omitempty"`
	ThirdPartyInvite *ThirdPartyInvite   `json:"third_party_invite,omitempty"`
	Reason           string              `json:"reason,omitempty"`
}

type ThirdPartyInvite struct {
	DisplayName string `json:"display_name"`
	Signed      struct {
		Token      string          `json:"token"`
		Signatures json.RawMessage `json:"signatures"`
		MXID       string          `json:"mxid"`
	}
}
