LS: use regex for cookie extraction (#3441)

* LuaScan: use regex for cookie extraction

* retry anyway

src/en/luascans/build.gradle

@@ -3,7 +3,7 @@ ext {
     extClass = '.LuaScans'
     themePkg = 'mangathemesia'
     baseUrl = 'https://luascans.com'
-    overrideVersionCode = 2
+    overrideVersionCode = 3
 }
 
 apply from: "$rootDir/common.gradle"

src/en/luascans/src/eu/kanade/tachiyomi/extension/en/luascans/LuaScans.kt

@@ -30,12 +30,12 @@ class LuaScans : MangaThemesia(
         return if (document.selectFirst("script:containsData(wafff)") != null) {
             val script = document.selectFirst("script:containsData(wafff)")!!.data()
 
-            val cookie = script.substringAfter("document.cookie=\"")
-                .substringBefore("\"")
+            val cookie = waffRegex.find(script)?.groups?.get("waff")?.value
+                ?.let { Cookie.parse(request.url, it) }
 
             client.cookieJar.saveFromResponse(
                 request.url,
-                listOfNotNull(Cookie.parse(request.url, cookie)),
+                listOfNotNull(cookie),
             )
 
             response.close()
@@ -45,4 +45,6 @@ class LuaScans : MangaThemesia(
             response
         }
     }
+
+    private val waffRegex = Regex("""document\.cookie\s*=\s*['"](?<waff>.*)['"]""")
 }