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package tvdb
import (
"bytes"
"crypto/md5"
"encoding/json"
"errors"
"fmt"
"metachan/config"
"metachan/entities"
"metachan/types"
"metachan/utils/logger"
"net/http"
"time"
)
const (
tvdbAPIBaseURL = "https://api4.thetvdb.com/v4"
tvdbLoginEndpoint = "/login"
tvdbImageBaseURL = "https://artworks.thetvdb.com"
timeout = 10 * time.Second
episodesTimeout = 15 * time.Second
tokenExpiry = 24 * time.Hour
contentType = "application/json"
acceptHeader = "application/json"
noDescription = "No description available"
recapType = "recap"
)
var (
clientInstance = &client{
httpClient: &http.Client{
Timeout: timeout,
},
}
)
func authenticate() (string, error) {
if clientInstance.token != "" && time.Now().Before(clientInstance.tokenExpiry) {
return clientInstance.token, nil
}
if config.API.TVDBKey == "" {
logger.Errorf("TVDB", "TVDB API key is not set")
return "", errors.New("TVDB API key is not set")
}
logger.Debugf("TVDB", "Authenticating with TVDB API")
authBody := map[string]string{"apikey": config.API.TVDBKey}
jsonBody, err := json.Marshal(authBody)
if err != nil {
logger.Errorf("TVDB", "Failed to marshal auth body: %v", err)
return "", errors.New("failed to marshal auth body")
}
req, err := http.NewRequest("POST", tvdbAPIBaseURL+tvdbLoginEndpoint, bytes.NewBuffer(jsonBody))
if err != nil {
logger.Errorf("TVDB", "Failed to create auth request: %v", err)
return "", errors.New("failed to create auth request")
}
req.Header.Add("Content-Type", contentType)
resp, err := clientInstance.httpClient.Do(req)
if err != nil {
logger.Errorf("TVDB", "Failed to authenticate: %v", err)
return "", errors.New("failed to authenticate")
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
logger.Errorf("TVDB", "Authentication failed with status: %d", resp.StatusCode)
return "", errors.New("authentication failed")
}
var authResp types.TVDBAuthResponse
if err := json.NewDecoder(resp.Body).Decode(&authResp); err != nil {
logger.Errorf("TVDB", "Failed to decode auth response: %v", err)
return "", errors.New("failed to decode auth response")
}
if authResp.Data.Token == "" {
logger.Errorf("TVDB", "No token received from TVDB")
return "", errors.New("no token received from TVDB")
}
clientInstance.token = authResp.Data.Token
clientInstance.tokenExpiry = time.Now().Add(tokenExpiry)
logger.Successf("TVDB", "Successfully authenticated with TVDB")
return clientInstance.token, nil
}
func GetSeriesEpisodes(tvdbID int) ([]types.TVDBEpisode, error) {
token, err := authenticate()
if err != nil {
logger.Errorf("TVDB", "Failed to authenticate with TVDB for series %d: %v", tvdbID, err)
return nil, errors.New("failed to authenticate with TVDB")
}
logger.Debugf("TVDB", "Fetching episodes for TVDB series %d", tvdbID)
tempClient := &http.Client{Timeout: episodesTimeout}
url := fmt.Sprintf("%s/series/%d/episodes/default", tvdbAPIBaseURL, tvdbID)
req, err := http.NewRequest("GET", url, nil)
if err != nil {
logger.Errorf("TVDB", "Failed to create request for series %d: %v", tvdbID, err)
return nil, errors.New("failed to create request")
}
req.Header.Add("Authorization", "Bearer "+token)
req.Header.Add("Accept", acceptHeader)
resp, err := tempClient.Do(req)
if err != nil {
logger.Errorf("TVDB", "Failed to fetch episodes for series %d: %v", tvdbID, err)
return nil, errors.New("failed to fetch episodes")
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
logger.Errorf("TVDB", "Failed to fetch episodes with status: %d", resp.StatusCode)
return nil, errors.New("failed to fetch episodes")
}
var episodesResp types.TVDBEpisodesResponse
if err := json.NewDecoder(resp.Body).Decode(&episodesResp); err != nil {
logger.Errorf("TVDB", "Failed to decode episodes response for series %d: %v", tvdbID, err)
return nil, errors.New("failed to decode episodes response")
}
logger.Successf("TVDB", "Successfully fetched %d episodes from TVDB for series %d", len(episodesResp.Data.Episodes), tvdbID)
return episodesResp.Data.Episodes, nil
}
func EnrichEpisodesFromTVDB(anime *entities.Anime, tvdbEpisodes []types.TVDBEpisode) {
if anime == nil || len(anime.Episodes) == 0 {
return
}
malID := anime.MALID
for i, ep := range tvdbEpisodes {
if i >= len(anime.Episodes) {
break
}
episode := &anime.Episodes[i]
if ep.Name != "" {
episode.Title = entities.EpisodeTitle{
English: ep.Name,
Japanese: episode.Title.Japanese,
Romaji: episode.Title.Romaji,
}
}
if ep.Image != "" {
episode.ThumbnailURL = ep.Image
}
if ep.Overview != "" {
episode.Description = ep.Overview
} else {
episode.Description = noDescription
}
if ep.Aired != "" {
episode.Aired = ep.Aired
}
if ep.FinaleType != nil && *ep.FinaleType == recapType {
episode.Recap = true
}
episode.EpisodeNumber = ep.Number
episode.EpisodeLength = float64(ep.Runtime)
titleForID := ep.Name
if titleForID == "" {
if episode.Title.English != "" {
titleForID = episode.Title.English
} else if episode.Title.Romaji != "" {
titleForID = episode.Title.Romaji
}
}
episode.EpisodeID = generateEpisodeID(malID, ep.Number, titleForID)
}
}
func generateEpisodeID(malID int, episodeNumber int, title string) string {
uniqueString := fmt.Sprintf("%d-%d-%s", malID, episodeNumber, title)
hash := md5.Sum([]byte(uniqueString))
return fmt.Sprintf("%x", hash)
}
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