safetwitch-backend/extractor/twitch/PlaybackAccessToken.go

package twitch

import (
	"github.com/tidwall/gjson"
)

type PlaybackAccessToken struct {
	Signature string
	Token     string
}

// Assumes streamer is live
// If no vodID give ""
func getPlaybackAccessToken(streamerName string, vodID string) (PlaybackAccessToken, error) {
	var isVod bool
	var isLive bool

	if vodID != "" {
		isVod = true
		isLive = false
	} else {
		isVod = false
		isLive = true
	}

	payload1 := []TwitchPayload{
		{
			"extensions": map[string]interface{}{
				"persistedQuery": map[string]interface{}{
					"version":    1,
					"sha256Hash": "0828119ded1c13477966434e15800ff57ddacf13ba1911c129dc2200705b0712",
				},
			},
			"operationName": "PlaybackAccessToken",
			"variables": map[string]interface{}{
				"isLive":     isLive,
				"login":      streamerName,
				"isVod":      isVod,
				"vodID":      vodID,
				"playerType": "site",
			},
		},
	}

	_, body, err := parseResponse(payload1)
	if err != nil {
		return PlaybackAccessToken{}, err
	}

	var token string
	var signature string
	if isLive {
		token = gjson.Get(string(body), "0.data.streamPlaybackAccessToken.value").String()
		signature = gjson.Get(string(body), "0.data.streamPlaybackAccessToken.signature").String()
		if err != nil {
			return PlaybackAccessToken{}, err
		}
	} else {
		token = gjson.Get(string(body), "0.data.videoPlaybackAccessToken.value").String()
		signature = gjson.Get(string(body), "0.data.videoPlaybackAccessToken.signature").String()
		if err != nil {
			return PlaybackAccessToken{}, err
		}
	}

	return PlaybackAccessToken{
		Signature: signature,
		Token:     token,
	}, nil

}