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package tvdb
import (
"bytes"
"crypto/md5"
"encoding/json"
"fmt"
"metachan/config"
"metachan/database"
"metachan/entities"
"metachan/types"
"metachan/utils/logger"
"net/http"
"time"
)
var tvdbToken string
var tvdbTokenExpiry time.Time
// authenticateTVDB authenticates with TVDB API and returns a token
func authenticateTVDB() (string, error) {
// Check if we have a valid token
if tvdbToken != "" && time.Now().Before(tvdbTokenExpiry) {
return tvdbToken, nil
}
if config.Config.TVDB.APIKey == "" {
return "", fmt.Errorf("TVDB API key is not set")
}
logger.Log("Authenticating with TVDB API", logger.LogOptions{
Level: logger.Debug,
Prefix: "TVDB",
})
client := &http.Client{Timeout: 10 * time.Second}
// Create request body with apikey
authBody := map[string]string{"apikey": config.Config.TVDB.APIKey}
jsonBody, err := json.Marshal(authBody)
if err != nil {
return "", fmt.Errorf("failed to marshal auth body: %w", err)
}
req, err := http.NewRequest("POST", "https://api4.thetvdb.com/v4/login", bytes.NewBuffer(jsonBody))
if err != nil {
return "", fmt.Errorf("failed to create auth request: %w", err)
}
req.Header.Add("Content-Type", "application/json")
resp, err := client.Do(req)
if err != nil {
return "", fmt.Errorf("failed to authenticate: %w", err)
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return "", fmt.Errorf("authentication failed with status: %d", resp.StatusCode)
}
var authResp TVDBAuthResponse
if err := json.NewDecoder(resp.Body).Decode(&authResp); err != nil {
return "", fmt.Errorf("failed to decode auth response: %w", err)
}
if authResp.Data.Token == "" {
return "", fmt.Errorf("no token received from TVDB")
}
// Store token and set expiry (TVDB tokens typically last 30 days, but we'll refresh after 24 hours to be safe)
tvdbToken = authResp.Data.Token
tvdbTokenExpiry = time.Now().Add(24 * time.Hour)
logger.Log("Successfully authenticated with TVDB", logger.LogOptions{
Level: logger.Success,
Prefix: "TVDB",
})
return tvdbToken, nil
}
// GetSeriesEpisodes fetches all episodes for a TVDB series
func GetSeriesEpisodes(tvdbID int) ([]TVDBEpisode, error) {
token, err := authenticateTVDB()
if err != nil {
return nil, fmt.Errorf("failed to authenticate with TVDB: %w", err)
}
logger.Log(fmt.Sprintf("Fetching episodes for TVDB series %d", tvdbID), logger.LogOptions{
Level: logger.Debug,
Prefix: "TVDB",
})
client := &http.Client{Timeout: 15 * time.Second}
// TVDB v4 API endpoint for episodes
url := fmt.Sprintf("https://api4.thetvdb.com/v4/series/%d/episodes/default", tvdbID)
req, err := http.NewRequest("GET", url, nil)
if err != nil {
return nil, fmt.Errorf("failed to create request: %w", err)
}
req.Header.Add("Authorization", "Bearer "+token)
req.Header.Add("Accept", "application/json")
resp, err := client.Do(req)
if err != nil {
return nil, fmt.Errorf("failed to fetch episodes: %w", err)
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("failed to fetch episodes with status: %d", resp.StatusCode)
}
var episodesResp TVDBEpisodesResponse
if err := json.NewDecoder(resp.Body).Decode(&episodesResp); err != nil {
return nil, fmt.Errorf("failed to decode episodes response: %w", err)
}
logger.Log(fmt.Sprintf("Successfully fetched %d episodes from TVDB for series %d", len(episodesResp.Data.Episodes), tvdbID), logger.LogOptions{
Level: logger.Success,
Prefix: "TVDB",
})
return episodesResp.Data.Episodes, nil
}
// ConvertTVDBEpisodesToAnimeEpisodes converts TVDB episodes to anime episode format
func ConvertTVDBEpisodesToAnimeEpisodes(tvdbEpisodes []TVDBEpisode) []types.AnimeSingleEpisode {
var animeEpisodes []types.AnimeSingleEpisode
const tvdbImageBaseURL = "https://artworks.thetvdb.com"
for _, ep := range tvdbEpisodes {
// Generate episode ID from name
titles := types.EpisodeTitles{
English: ep.Name,
Japanese: "",
Romaji: "",
}
thumbnailURL := ""
if ep.Image != "" {
thumbnailURL = ep.Image
}
description := ep.Overview
if description == "" {
description = "No description available"
}
isRecap := false
if ep.FinaleType != nil && *ep.FinaleType == "recap" {
isRecap = true
}
animeEpisodes = append(animeEpisodes, types.AnimeSingleEpisode{
ID: generateEpisodeID(titles),
Titles: titles,
Description: description,
Aired: ep.Aired,
ThumbnailURL: thumbnailURL,
Score: 0,
Filler: false,
Recap: isRecap,
ForumURL: "",
URL: "",
})
}
return animeEpisodes
}
// generateEpisodeID creates a unique episode ID from titles
func generateEpisodeID(titles types.EpisodeTitles) string {
var title string
if titles.English != "" {
title = titles.English
} else if titles.Romaji != "" {
title = titles.Romaji
} else {
title = titles.Japanese
}
// MD5 hash for ID generation to match Jikan episode IDs
hash := md5.Sum([]byte(title))
return fmt.Sprintf("%x", hash)
}
// FindSeasonMappings finds all anime mappings that belong to the same series based on TVDB ID
func FindSeasonMappings(tvdbID int) ([]entities.AnimeMapping, error) {
logger.Log(fmt.Sprintf("Finding season mappings for TVDB ID %d", tvdbID), logger.LogOptions{
Level: logger.Debug,
Prefix: "TVDB",
})
// Use our database function to find all mappings with the same TVDB ID
mappings, err := database.GetAnimeMappingsByTVDBID(tvdbID)
if err != nil {
return nil, fmt.Errorf("failed to get season mappings: %w", err)
}
if len(mappings) == 0 {
logger.Log(fmt.Sprintf("No season mappings found for TVDB ID %d", tvdbID), logger.LogOptions{
Level: logger.Debug,
Prefix: "TVDB",
})
} else {
logger.Log(fmt.Sprintf("Found %d season mappings for TVDB ID %d", len(mappings), tvdbID), logger.LogOptions{
Level: logger.Info,
Prefix: "TVDB",
})
}
return mappings, nil
}
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