mirror of
https://github.com/truewhile/MeBox.git
synced 2026-09-29 11:36:36 +08:00
ShukeBta
504 lines
14 KiB
Go
504 lines
14 KiB
Go
// Package service — subscription planning and release candidate selection.
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package service
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import (
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"fmt"
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"net/url"
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"regexp"
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"sort"
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"strings"
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"unicode"
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"github.com/ShukeBta/MediaStationGo/internal/model"
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)
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var (
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seriesPackRE = regexp.MustCompile(`(?i)(complete|batch|合集|全集|全\s*\d+\s*[集话話期]|整季|全季|s\d{1,2}\s*(?:complete|batch|pack)|season\s*\d{1,2}\s*(?:complete|batch|pack)|s\d{1,2}e\d{1,3}\s*[-~–—]\s*(?:e)?\d{1,3}|第\s*\d+\s*[-~–—]\s*\d+\s*[集话話期])`)
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seasonOnlyRE = regexp.MustCompile(`(?i)(?:^|[\s._-])(?:s|season)\s*\d{1,2}(?:[\s._-]|$)|第\s*\d+\s*季`)
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)
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type siteSearchCandidate struct {
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Item SearchResult
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Download string
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GUID string
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Season int
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Episode int
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Pack bool
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Score int
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}
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// SubscriptionPlanner owns release selection decisions for subscriptions:
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// rule matching, candidate scoring, and filtering against known availability.
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type SubscriptionPlanner struct{}
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func selectSiteSearchCandidates(results []SearchResult, sub *model.Subscription, seenSet map[string]struct{}, availability ...LocalAvailability) []siteSearchCandidate {
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return SubscriptionPlanner{}.SelectSiteSearchCandidates(results, sub, seenSet, availability...)
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}
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func (SubscriptionPlanner) SelectSiteSearchCandidates(results []SearchResult, sub *model.Subscription, seenSet map[string]struct{}, availability ...LocalAvailability) []siteSearchCandidate {
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if sub == nil {
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return nil
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}
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if seenSet == nil {
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seenSet = map[string]struct{}{}
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}
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local := LocalAvailability{}
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if len(availability) > 0 {
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local = availability[0]
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}
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return selectSiteSearchCandidatesWithAvailability(results, sub, seenSet, local)
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}
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func selectSiteSearchCandidatesWithAvailability(results []SearchResult, sub *model.Subscription, seenSet map[string]struct{}, local LocalAvailability) []siteSearchCandidate {
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candidates := make([]siteSearchCandidate, 0, len(results))
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for _, item := range results {
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if !matchesSubscriptionRules(sub, item.Title) {
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continue
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}
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download := strings.TrimSpace(item.DownloadURL)
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if download == "" {
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download = strings.TrimSpace(item.TorrentURL)
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}
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if download == "" {
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continue
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}
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guid := stableSiteSearchGUID(item, download)
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if _, ok := seenSet[guid]; ok {
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continue
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}
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season, episode := ParseEpisode(item.Title)
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score := subscriptionCandidateScore(sub, item)
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candidates = append(candidates, siteSearchCandidate{
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Item: item,
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Download: download,
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GUID: guid,
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Season: season,
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Episode: episode,
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Pack: isSeriesPackTitle(item.Title),
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Score: score,
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})
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}
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return selectPreparedSubscriptionCandidates(candidates, sub, local)
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}
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func selectRSSSubscriptionCandidates(items []rssItem, sub *model.Subscription, filter *regexp.Regexp, seenSet map[string]struct{}, local LocalAvailability) []siteSearchCandidate {
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if seenSet == nil {
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seenSet = map[string]struct{}{}
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}
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candidates := make([]siteSearchCandidate, 0, len(items))
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for _, item := range items {
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title := strings.TrimSpace(item.Title)
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if title == "" {
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continue
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}
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if filter != nil && !filter.MatchString(title) {
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continue
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}
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if !matchesSubscriptionRules(sub, title) {
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continue
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}
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download := strings.TrimSpace(item.Enclosure.URL)
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if download == "" {
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download = strings.TrimSpace(item.Link)
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}
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if download == "" {
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continue
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}
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guid := stableRSSItemGUID(title, item.GUID, item.Link, item.Enclosure.URL)
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if _, ok := seenSet[guid]; ok {
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continue
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}
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searchItem := SearchResult{Title: title, DownloadURL: download}
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season, episode := ParseEpisode(title)
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candidates = append(candidates, siteSearchCandidate{
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Item: searchItem,
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Download: download,
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GUID: guid,
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Season: season,
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Episode: episode,
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Pack: isSeriesPackTitle(title),
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Score: subscriptionCandidateScore(sub, searchItem),
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})
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}
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return selectPreparedSubscriptionCandidates(candidates, sub, local)
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}
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func selectPreparedSubscriptionCandidates(candidates []siteSearchCandidate, sub *model.Subscription, local LocalAvailability) []siteSearchCandidate {
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if len(candidates) > 1 {
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sort.SliceStable(candidates, func(i, j int) bool {
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if candidates[i].Score != candidates[j].Score {
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return candidates[i].Score > candidates[j].Score
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}
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if candidates[i].Item.Seeders != candidates[j].Item.Seeders {
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return candidates[i].Item.Seeders > candidates[j].Item.Seeders
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}
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return candidates[i].Item.Size > candidates[j].Item.Size
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})
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}
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if len(candidates) == 0 {
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return nil
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}
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mediaType := normalizeMediaType(sub.MediaType, sub.Name+" "+sub.Filter, "")
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if !isSubscriptionSeriesType(mediaType) {
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// 对齐 MoviePilot：非洗版订阅成功下载一次即满足，媒体库/下载中已存在则不再重复下载。
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if (sub == nil || !sub.WashEnabled) && local.LocalMediaCount > 0 {
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return nil
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}
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return candidates[:1]
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}
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if local.HasSeriesPack {
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return nil
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}
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if local.LocalMediaCount > 0 {
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if local.TotalEpisodes > 0 && len(local.MissingEpisodes) == 0 {
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return nil
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}
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missingSet := missingEpisodeSet(local)
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onlyMissing := make([]siteSearchCandidate, 0, len(candidates))
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for _, candidate := range candidates {
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if candidate.Episode <= 0 {
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continue
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}
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season := candidate.Season
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if season <= 0 {
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season = 1
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}
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if _, exists := local.ExistingEpisodeKeys[episodeKey(season, candidate.Episode)]; exists {
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continue
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}
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if local.TotalEpisodes > 0 {
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if _, missing := missingSet[candidate.Episode]; !missing {
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continue
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}
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}
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onlyMissing = append(onlyMissing, candidate)
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}
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return sortedEpisodeCandidates(onlyMissing)
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}
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for _, candidate := range candidates {
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if candidate.Pack {
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return []siteSearchCandidate{candidate}
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}
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}
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selected := sortedEpisodeCandidates(candidates)
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if len(selected) == 0 {
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return candidates[:1]
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}
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return selected
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}
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func stableRSSItemGUID(title, guid, link, enclosureURL string) string {
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parts := []string{"rss", strings.ToLower(strings.TrimSpace(title))}
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for _, raw := range []string{guid, enclosureURL, link} {
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if key := stableDownloadURLKey(raw); key != "" {
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parts = append(parts, key)
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return strings.Join(parts, "|")
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}
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if raw = strings.TrimSpace(raw); raw != "" {
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parts = append(parts, strings.ToLower(raw))
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return strings.Join(parts, "|")
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}
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}
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return strings.Join(parts, "|")
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}
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func stableSiteSearchGUID(item SearchResult, download string) string {
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parts := []string{
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"site",
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strings.ToLower(strings.TrimSpace(firstNonEmpty(item.SiteID, item.SiteName))),
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strings.ToLower(strings.TrimSpace(item.Category)),
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strings.ToLower(strings.TrimSpace(item.Title)),
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fmt.Sprintf("%d", item.Size),
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}
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if key := stableDownloadURLKey(download); key != "" {
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parts = append(parts, key)
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}
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return strings.Join(parts, "|")
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}
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func stableDownloadURLKey(raw string) string {
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raw = strings.TrimSpace(raw)
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if raw == "" {
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return ""
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}
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u, err := url.Parse(raw)
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if err != nil {
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return strings.ToLower(raw)
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}
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if strings.EqualFold(u.Scheme, "magnet") {
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xt := strings.ToLower(strings.TrimSpace(u.Query().Get("xt")))
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if xt != "" {
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return "magnet:" + xt
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}
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return strings.ToLower(raw)
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}
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if u.Host == "" {
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return strings.ToLower(raw)
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}
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q := u.Query()
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kept := make([]string, 0, 4)
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for _, key := range []string{"id", "tid", "torrent", "torrent_id", "torrentid", "hash", "info_hash"} {
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if value := strings.TrimSpace(q.Get(key)); value != "" {
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kept = append(kept, key+"="+strings.ToLower(value))
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}
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}
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base := strings.ToLower(strings.TrimRight(u.Host, "/") + "/" + strings.TrimLeft(u.Path, "/"))
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if len(kept) > 0 {
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return base + "?" + strings.Join(kept, "&")
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}
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return base
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}
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// defaultExcludeWords 是参考 MoviePilot 默认过滤的「垃圾版本」排除清单，对所有订阅生效，
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// 与用户自定义排除词合并。拉丁词在 containsAnyExcludeToken 里按词边界匹配以避免子串误伤。
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const defaultExcludeWords = "cam,ts,tc,telesync,telecine,hdcam,hdts,枪版,抢先,抢鲜,预告,trailer,sample"
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func matchesSubscriptionRules(sub *model.Subscription, title string) bool {
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titleFold := strings.ToLower(title)
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if containsAnyExcludeToken(titleFold, defaultExcludeWords) {
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return false
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}
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if sub == nil {
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return true
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}
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if sub.ExcludeWords != "" && containsAnyExcludeToken(titleFold, sub.ExcludeWords) {
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return false
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}
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if sub.ReleaseGroups != "" && !containsAnyToken(titleFold, sub.ReleaseGroups) {
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return false
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}
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if sub.Resolution != "" && sub.Resolution != "best" && !titleMatchesResolution(titleFold, sub.Resolution) {
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return false
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}
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if sub.Quality != "" && sub.Quality != "best" && !titleMatchesQuality(titleFold, sub.Quality) {
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return false
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}
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if sub.Effects != "" && !containsAnyEffect(titleFold, sub.Effects) {
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return false
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}
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return true
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}
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func subscriptionCandidateScore(sub *model.Subscription, item SearchResult) int {
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title := strings.ToLower(item.Title)
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score := item.Seeders
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if sub == nil || !sub.WashEnabled {
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if item.Free {
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score += 25
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}
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return score
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}
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resolutionScore := detectResolutionScore(title)
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qualityScore := detectQualityScore(title)
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effectScore := detectEffectScore(title)
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priority := "balanced"
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if sub != nil && strings.TrimSpace(sub.WashPriority) != "" {
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priority = strings.ToLower(strings.TrimSpace(sub.WashPriority))
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}
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switch priority {
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case "resolution":
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score += resolutionScore*1000 + qualityScore*100 + effectScore*50
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case "quality":
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score += qualityScore*1000 + resolutionScore*200 + effectScore*50
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case "effects":
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score += effectScore*1000 + resolutionScore*200 + qualityScore*100
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case "seeders":
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score += qualityScore*3 + resolutionScore*2 + effectScore
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default:
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score += resolutionScore*500 + qualityScore*300 + effectScore*150
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}
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if item.Free {
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score += 25
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}
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return score
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}
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func containsAnyToken(titleFold, csv string) bool {
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for _, token := range strings.FieldsFunc(strings.ToLower(csv), func(r rune) bool {
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return r == ',' || r == '/' || r == '|' || r == ';' || r == '，'
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}) {
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token = strings.TrimSpace(token)
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if token != "" && strings.Contains(titleFold, token) {
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return true
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}
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}
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return false
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}
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// containsAnyExcludeToken 用于排除词匹配：纯 ASCII 字母数字的词按词边界匹配（避免 "ts"
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// 误伤 "tsukihime"、"cam" 误伤 "camp" 之类的子串误判），含 CJK/符号的词仍按子串匹配。
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func containsAnyExcludeToken(titleFold, csv string) bool {
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for _, token := range strings.FieldsFunc(strings.ToLower(csv), func(r rune) bool {
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return r == ',' || r == '/' || r == '|' || r == ';' || r == '，'
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}) {
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token = strings.TrimSpace(token)
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if token == "" {
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continue
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}
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if isASCIIWordToken(token) {
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if matchesWordBoundary(titleFold, token) {
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return true
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}
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continue
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}
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if strings.Contains(titleFold, token) {
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return true
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}
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}
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return false
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}
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func isASCIIWordToken(token string) bool {
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for _, r := range token {
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if r > unicode.MaxASCII || !(unicode.IsLetter(r) || unicode.IsDigit(r)) {
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return false
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}
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}
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return token != ""
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}
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// matchesWordBoundary 判断 token 是否作为独立词出现在 title 中，词边界为「非字母数字」。
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func matchesWordBoundary(titleFold, token string) bool {
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isWordRune := func(r rune) bool {
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return unicode.IsLetter(r) || unicode.IsDigit(r)
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}
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from := 0
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for {
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idx := strings.Index(titleFold[from:], token)
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if idx < 0 {
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return false
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}
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start := from + idx
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end := start + len(token)
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leftOK := start == 0 || !isWordRune(rune(titleFold[start-1]))
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rightOK := end >= len(titleFold) || !isWordRune(rune(titleFold[end]))
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if leftOK && rightOK {
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return true
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}
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from = start + 1
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if from >= len(titleFold) {
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return false
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}
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}
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}
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func containsAnyEffect(titleFold, csv string) bool {
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for _, token := range strings.FieldsFunc(strings.ToLower(csv), func(r rune) bool {
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return r == ',' || r == '/' || r == '|' || r == ';' || r == '，'
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}) {
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token = strings.TrimSpace(token)
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if token == "" {
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continue
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}
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switch token {
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case "dolby-vision", "dolby vision", "dv":
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if strings.Contains(titleFold, "dolby vision") || strings.Contains(titleFold, "dovi") || regexp.MustCompile(`\bdv\b`).MatchString(titleFold) {
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return true
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}
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default:
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if strings.Contains(titleFold, token) {
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return true
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}
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}
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}
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return false
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}
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func titleMatchesResolution(titleFold, resolution string) bool {
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switch strings.ToLower(strings.TrimSpace(resolution)) {
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case "2160p", "4k", "uhd":
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return strings.Contains(titleFold, "2160p") || strings.Contains(titleFold, "4k") || strings.Contains(titleFold, "uhd")
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case "1080p":
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return strings.Contains(titleFold, "1080p") || strings.Contains(titleFold, "fhd")
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case "720p":
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return strings.Contains(titleFold, "720p")
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default:
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return strings.Contains(titleFold, strings.ToLower(strings.TrimSpace(resolution)))
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}
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}
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func titleMatchesQuality(titleFold, quality string) bool {
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switch strings.ToLower(strings.TrimSpace(quality)) {
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case "webdl", "web-dl":
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return strings.Contains(titleFold, "web-dl") || strings.Contains(titleFold, "webdl")
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case "bluray", "blu-ray":
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return strings.Contains(titleFold, "bluray") || strings.Contains(titleFold, "blu-ray") || strings.Contains(titleFold, "bdrip")
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case "remux":
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return strings.Contains(titleFold, "remux")
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case "hdtv":
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return strings.Contains(titleFold, "hdtv")
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default:
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return strings.Contains(titleFold, strings.ToLower(strings.TrimSpace(quality)))
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}
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}
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func detectResolutionScore(titleFold string) int {
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switch {
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case titleMatchesResolution(titleFold, "2160p"):
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return 4
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case titleMatchesResolution(titleFold, "1080p"):
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return 3
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case titleMatchesResolution(titleFold, "720p"):
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return 2
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default:
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return 1
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}
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}
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func detectQualityScore(titleFold string) int {
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switch {
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case titleMatchesQuality(titleFold, "remux"):
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return 5
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case titleMatchesQuality(titleFold, "bluray"):
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return 4
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case titleMatchesQuality(titleFold, "web-dl"):
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return 3
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case titleMatchesQuality(titleFold, "hdtv"):
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return 2
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default:
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return 1
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}
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}
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func detectEffectScore(titleFold string) int {
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score := 0
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if containsAnyEffect(titleFold, "dolby-vision") {
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score += 4
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}
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if strings.Contains(titleFold, "hdr10+") {
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score += 3
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} else if strings.Contains(titleFold, "hdr") {
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score += 2
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}
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if strings.Contains(titleFold, "atmos") {
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score += 2
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}
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return score
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}
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func isSubscriptionSeriesType(mediaType string) bool {
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switch normalizeMediaType(mediaType, "", "") {
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case "tv", "anime", "variety":
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return true
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default:
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return false
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}
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}
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func isSeriesPackTitle(title string) bool {
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title = strings.TrimSpace(title)
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if title == "" {
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return false
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}
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if seriesPackRE.MatchString(title) {
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return true
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}
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_, episode := ParseEpisode(title)
|
||
return episode == 0 && seasonOnlyRE.MatchString(title)
|
||
}
|