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// Copyright (c) 2021 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"
"fmt"
"strconv"
)
type CallHangupReason string
const (
CallHangupICEFailed CallHangupReason = "ice_failed"
CallHangupInviteTimeout CallHangupReason = "invite_timeout"
CallHangupUserHangup CallHangupReason = "user_hangup"
CallHangupUserMediaFailed CallHangupReason = "user_media_failed"
CallHangupUnknownError CallHangupReason = "unknown_error"
)
type CallDataType string
const (
CallDataTypeOffer CallDataType = "offer"
CallDataTypeAnswer CallDataType = "answer"
)
type CallData struct {
SDP string `json:"sdp"`
Type CallDataType `json:"type"`
}
type CallCandidate struct {
Candidate string `json:"candidate"`
SDPMLineIndex int `json:"sdpMLineIndex"`
SDPMID string `json:"sdpMid"`
}
type CallVersion string
func (cv *CallVersion) UnmarshalJSON(raw []byte) error {
var numberVersion int
err := json.Unmarshal(raw, &numberVersion)
if err != nil {
var stringVersion string
err = json.Unmarshal(raw, &stringVersion)
if err != nil {
return fmt.Errorf("failed to parse CallVersion: %w", err)
}
*cv = CallVersion(stringVersion)
} else {
*cv = CallVersion(strconv.Itoa(numberVersion))
}
return nil
}
func (cv *CallVersion) MarshalJSON() ([]byte, error) {
for _, char := range *cv {
if char < '0' || char > '9' {
// The version contains weird characters, return as string.
return json.Marshal(string(*cv))
}
}
// The version consists of only ASCII digits, return as an integer.
return []byte(*cv), nil
}
func (cv *CallVersion) Int() (int, error) {
return strconv.Atoi(string(*cv))
}
type BaseCallEventContent struct {
CallID string `json:"call_id"`
PartyID string `json:"party_id"`
Version CallVersion `json:"version"`
}
type CallInviteEventContent struct {
BaseCallEventContent
Lifetime int `json:"lifetime"`
Offer CallData `json:"offer"`
}
type CallCandidatesEventContent struct {
BaseCallEventContent
Candidates []CallCandidate `json:"candidates"`
}
type CallRejectEventContent struct {
BaseCallEventContent
}
type CallAnswerEventContent struct {
BaseCallEventContent
Answer CallData `json:"answer"`
}
type CallSelectAnswerEventContent struct {
BaseCallEventContent
SelectedPartyID string `json:"selected_party_id"`
}
type CallNegotiateEventContent struct {
BaseCallEventContent
Lifetime int `json:"lifetime"`
Description CallData `json:"description"`
}
type CallHangupEventContent struct {
BaseCallEventContent
Reason CallHangupReason `json:"reason"`
}
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