1package invidious
  2
  3import (
  4	"net/http"
  5	"regexp"
  6	"strconv"
  7	"time"
  8
  9	"github.com/sirupsen/logrus"
 10)
 11
 12const timeoutDuration = 10 * time.Minute
 13const maxSizeBytes = 20000000 // 20 MB
 14const instancesEndpoint = "https://api.invidious.io/instances.json?sort_by=api,type"
 15const videosEndpoint = "https://%s/api/v1/videos/%s?fields=videoId,title,description,author,lengthSeconds,size,formatStreams"
 16
 17var expireRegex = regexp.MustCompile(`(?i)expire=(\d+)`)
 18var logger = logrus.New()
 19
 20type Timeout struct {
 21	Instance  string
 22	Timestamp time.Time
 23}
 24
 25type Client struct {
 26	http     *http.Client
 27	timeouts []Timeout
 28	Instance string
 29}
 30
 31type Format struct {
 32	Name      string `json:"qualityLabel"`
 33	Url       string `json:"url"`
 34	Container string `json:"container"`
 35	Size      string `json:"size"`
 36}
 37
 38type Video struct {
 39	VideoId     string   `json:"videoId"`
 40	Title       string   `json:"title"`
 41	Description string   `json:"description"`
 42	Uploader    string   `json:"author"`
 43	Duration    int      `json:"lengthSeconds"`
 44	Formats     []Format `json:"formatStreams"`
 45	Timestamp   time.Time
 46	Expire      time.Time
 47	Url         string
 48}
 49
 50func filter[T any](ss []T, test func(T) bool) (ret []T) {
 51	for _, s := range ss {
 52		if test(s) {
 53			ret = append(ret, s)
 54		}
 55	}
 56	return
 57}
 58
 59func parseOrZero(number string) int {
 60	res, err := strconv.Atoi(number)
 61	if err != nil {
 62		return 0
 63	}
 64	return res
 65}
 66
 67func (c *Client) GetVideo(videoId string, fromCache bool) (*Video, error) {
 68	logger.Info("Video https://youtu.be/", videoId, " was requested.")
 69
 70	var video *Video
 71	var err error
 72
 73	if fromCache {
 74		video, err = GetVideoDB(videoId)
 75		if err == nil {
 76			logger.Info("Found a valid cache entry.")
 77			return video, nil
 78		}
 79	}
 80
 81	video, httpErr := c.fetchVideo(videoId)
 82
 83	switch httpErr {
 84	case http.StatusOK:
 85		logger.Info("Retrieved by API.")
 86		break
 87	case http.StatusNotFound:
 88		logger.Debug("Video does not exist or can't be retrieved.")
 89		return nil, err
 90	default:
 91		fallthrough
 92	case http.StatusInternalServerError:
 93		err = c.NewInstance()
 94		if err != nil {
 95			logger.Error("Could not get a new instance: ", err)
 96			time.Sleep(10 * time.Second)
 97		}
 98		return c.GetVideo(videoId, true)
 99	}
100
101	err = CacheVideoDB(*video)
102	if err != nil {
103		logger.Warn("Could not cache video id: ", videoId)
104		logger.Warn(err)
105	}
106	return video, nil
107}
108
109func NewClient(httpClient *http.Client) *Client {
110	InitDB()
111	client := &Client{
112		http:     httpClient,
113		timeouts: []Timeout{},
114	}
115	err := client.NewInstance()
116	if err != nil {
117		logger.Fatal(err)
118	}
119	return client
120}