初始提交：短剧库源码（含转码优化 ultrafast）

2026-09-17 19:09:08 +08:00
commit 07dc0f1059
247 changed files with 43242 additions and 0 deletions
@@ -0,0 +1,110 @@
+package app
+
+import (
+	"context"
+	"errors"
+	"net/http"
+	"strconv"
+	"strings"
+)
+
+type hongguoRecommendationQuery struct {
+	Genre     string   `json:"genre"`
+	Offset    int      `json:"offset"`
+	SessionID string   `json:"sessionId"`
+	Seen      []string `json:"seen"`
+}
+
+type hongguoRecommendationPage struct {
+	Dramas     []Drama `json:"data"`
+	NextOffset int     `json:"nextOffset"`
+	SessionID  string  `json:"sessionId"`
+	HasMore    bool    `json:"hasMore"`
+	Saved      bool    `json:"saved"`
+}
+
+func (query hongguoRecommendationQuery) validate() error {
+	known := false
+	for _, genre := range hongguoAppGenres {
+		known = known || query.Genre == genre.key
+	}
+	if !known || query.Offset < 0 || query.Offset > 1_000_000 || len(query.SessionID) > 4096 || strings.ContainsAny(query.SessionID, "\r\n\x00") || len(query.Seen) > 540 {
+		return errors.New("推荐分类或分页参数无效，请重新获取")
+	}
+	for _, id := range query.Seen {
+		if !hongguoNumericID.MatchString(strings.TrimPrefix(id, "hongguo:")) {
+			return errors.New("推荐分页含无效剧集 ID")
+		}
+	}
+	return nil
+}
+
+func (downloader *Downloader) fetchHongguoRecommendations(ctx context.Context, query hongguoRecommendationQuery) (hongguoRecommendationPage, error) {
+	page := hongguoRecommendationPage{Dramas: []Drama{}}
+	if err := query.validate(); err != nil {
+		return page, err
+	}
+	scene, category := "", ""
+	for _, genre := range hongguoAppGenres {
+		if genre.key == query.Genre {
+			scene, category = genre.scene, genre.name
+		}
+	}
+	seen := make(map[string]bool, len(query.Seen))
+	filterIDs := make([]string, 0, len(query.Seen))
+	for _, id := range query.Seen {
+		id = strings.TrimPrefix(id, "hongguo:")
+		if !seen[id] {
+			filterIDs = append(filterIDs, id)
+			seen[id] = true
+		}
+	}
+	payload := map[string]any{
+		"req_scene": scene, "offset": query.Offset, "limit": 18,
+		"req_type": "only_content", "need_selector_panel": false, "client_req_type": 3,
+		"session_id": query.SessionID, "filter_ids": strings.Join(filterIDs, ","),
+		"select_items": map[string]any{
+			"genre": []string{query.Genre}, "sort": []string{}, "gender": []string{},
+			"category_dim_theme": []string{}, "category_dim_role": []string{}, "category_dim_epoch": []string{},
+			"online_time": []string{}, "creation_status": []string{},
+		},
+	}
+	if query.Offset > 0 {
+		payload["client_req_type"] = 2
+	}
+	result, err := downloader.hongguoAppRequest(ctx, http.MethodPost, "/reading/distribution/category/landpage/v/", nil, payload)
+	if err != nil {
+		return page, err
+	}
+	data := nestedMap(result, "data")
+	rows, valid := data["video_data"].([]any)
+	hasMore, paginationOK := data["has_more"].(bool)
+	next, parseErr := strconv.Atoi(mapString(data, "next_offset"))
+	if !valid || !paginationOK || hasMore && parseErr != nil {
+		return page, errors.New("红果推荐数据格式异常，已保留上次位置")
+	}
+	validRows := 0
+	for _, row := range rows {
+		drama := hongguoDramaFromAny(row, category)
+		if drama.ID != "" {
+			validRows++
+		}
+		id := strings.TrimPrefix(drama.ID, "hongguo:")
+		if drama.ID == "" || seen[id] {
+			continue
+		}
+		seen[id] = true
+		page.Dramas = append(page.Dramas, drama)
+	}
+	if len(rows) > 0 && validRows == 0 {
+		return hongguoRecommendationPage{}, errors.New("红果推荐未返回可识别的剧集")
+	}
+	if hasMore && (next <= query.Offset || next > 1_000_000 || len(page.Dramas) == 0) {
+		return hongguoRecommendationPage{}, errors.New("红果推荐分页未前进，可重试或重新获取")
+	}
+	page.NextOffset, page.HasMore, page.SessionID = next, hasMore, mapString(data, "session_id")
+	if len(page.SessionID) > 4096 || strings.ContainsAny(page.SessionID, "\r\n\x00") {
+		return hongguoRecommendationPage{}, errors.New("红果推荐分页标记无效")
+	}
+	return page, ctx.Err()
+}