89 lines
2.7 KiB
Go
89 lines
2.7 KiB
Go
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package main
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import (
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"bytes"
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"encoding/json"
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"log"
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"net/http"
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"os"
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"strings"
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"time"
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"github.com/icedream/livestream-tools/icedreammusic/tuna"
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"gopkg.in/alecthomas/kingpin.v3-unstable"
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)
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var (
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cli = kingpin.New("tunaposter", "Retrieve and copy Tuna now playing information to a Liquidsoap metadata Harbor endpoint.")
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argTunaWebServerURL = cli.Arg("tuna-webserver-url", "Tuna webserver URL").Required().URL()
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argLiquidsoapMetaEndpointURL = cli.Arg("liquidsoap-meta-endpoint-url", "Liquidsoap metadata harbor endpoint URL").Required().URL()
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)
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type liquidsoapMetadataRequest struct {
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Data liquidsoapMetadata `json:"data"`
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}
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type liquidsoapMetadata struct {
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Artist string `json:"artist"`
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Title string `json:"title"`
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}
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func init() {
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kingpin.MustParse(cli.Parse(os.Args[1:]))
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}
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func main() {
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client := &http.Client{
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Timeout: 2 * time.Second,
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}
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// TODO - shutdown signal handling
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var oldTunaData *tuna.TunaData
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for {
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// client.Get(url string)
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resp, err := client.Get((*argTunaWebServerURL).String())
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if err == nil {
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tunaData := new(tuna.TunaData)
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if err = json.NewDecoder(resp.Body).Decode(tunaData); err == nil {
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// skip empty or same metadata
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differentDataReceived := oldTunaData == nil ||
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oldTunaData.Title != tunaData.Title ||
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len(oldTunaData.Artists) != len(tunaData.Artists)
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if !differentDataReceived {
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for i, artist := range oldTunaData.Artists {
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differentDataReceived = differentDataReceived || artist != tunaData.Artists[i]
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}
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}
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if differentDataReceived && tunaData.Artists != nil && len(tunaData.Artists) > 0 && len(tunaData.Title) > 0 {
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liquidsoapData := &liquidsoapMetadataRequest{
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Data: liquidsoapMetadata{
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Artist: strings.Join(tunaData.Artists, ", "),
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Title: tunaData.Title,
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},
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}
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postBuf := new(bytes.Buffer)
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if err = json.NewEncoder(postBuf).Encode(liquidsoapData); err == nil {
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postBufCopy := postBuf.Bytes()
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log.Println("Will send new metadata:", string(postBufCopy))
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if _, err = client.Post((*argLiquidsoapMetaEndpointURL).String(), "application/json", bytes.NewReader(postBufCopy)); err == nil {
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oldTunaData = tunaData
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} else {
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log.Printf("WARNING: Failed to post metadata to Liquidsoap harbor endpoint: %s", err.Error())
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}
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} else {
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log.Printf("WARNING: Failed to encode metadata for Liquidsoap harbor endpoint: %s", err.Error())
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}
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}
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} else {
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log.Printf("WARNING: Failed to decode metadata from Tuna webserver: %s", err.Error())
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}
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} else {
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log.Printf("WARNING: Failed to retrieve metadata from Tuna webserver, resetting old data: %s", err.Error())
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oldTunaData = nil
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}
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time.Sleep(time.Second)
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}
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}
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