fix: 修复tvcat.cc选择器和播放页URL提取

- 详情页: sourceSelector/episodeGroupSelector置空,强制走fallback正确提取剧集
- 播放页: 新增fetchPlayUrlFromApi方法,通过/_fetch_p/ API获取m3u8直链
- PlayerActivity: extractFromPlayPage返回空时尝试API获取,失败再用WebView

app/src/main/java/com/videoapp/tv/PlayerActivity.kt

@@ -259,7 +259,12 @@ class PlayerActivity : AppCompatActivity() {
             } else if (iframeUrl != null) {
                 playWithWebView(iframeUrl)
             } else {
-                playWithWebView(ep.playUrl)
+                val apiUrl = videoExtractor.fetchPlayUrlFromApi(ep.playUrl, config.baseUrl)
+                if (apiUrl != null) {
+                    playWithExoPlayer(apiUrl)
+                } else {
+                    playWithWebView(ep.playUrl)
+                }
             }
         }
     }

app/src/main/java/com/videoapp/tv/data/SitePreset.kt

@@ -47,8 +47,8 @@ data class SitePreset(
                     categorySelector = ".text-muted",
                     dateSelector = "",
                     episodeSelector = "li.list-inline-item a",
-                    sourceSelector = "h2",
-                    sourceEpisodeGroupSelector = "ul.list-unstyled",
+                    sourceSelector = "",
+                    sourceEpisodeGroupSelector = "",
                     iframeSelector = "iframe",
                     videoSelector = "video source, video[src]"
                 )

app/src/main/java/com/videoapp/tv/engine/VideoExtractor.kt

@@ -3,7 +3,9 @@ package com.videoapp.tv.engine
 import com.videoapp.tv.data.SiteConfig
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
+import org.json.JSONObject
 import org.jsoup.Jsoup
+import java.net.URL
 
 data class Episode(
     val title: String,
@@ -90,4 +92,30 @@ class VideoExtractor {
             Pair(null, null)
         }
     }
+
+    suspend fun fetchPlayUrlFromApi(
+        playUrl: String,
+        baseUrl: String
+    ): String? = withContext(Dispatchers.IO) {
+        try {
+            val pattern = Regex("""(\d+)/ep(\d+)""")
+            val match = pattern.find(playUrl) ?: return@withContext null
+            val videoId = match.groupValues[1]
+            val epNum = match.groupValues[2]
+            val apiUrl = "${baseUrl.trimEnd('/')}/_fetch_p/$videoId/ep$epNum"
+            val conn = URL(apiUrl).openConnection()
+            conn.setRequestProperty("User-Agent", "Mozilla/5.0")
+            conn.setRequestProperty("Referer", playUrl)
+            conn.connectTimeout = 15000
+            conn.readTimeout = 15000
+            val json = conn.getInputStream().bufferedReader().use { it.readText() }
+            val obj = JSONObject(json)
+            val playcfgs = obj.getJSONArray("playcfgs")
+            if (playcfgs.length() > 0) {
+                playcfgs.getJSONObject(0).getString("url")
+            } else null
+        } catch (e: Exception) {
+            null
+        }
+    }
 }