feat(Snapchat): Added Snapchat spotlight video downloader.

src/commonMain/kotlin/com/mugames/vidsnapkit/extractor/Snapchat.kt

@@ -0,0 +1,89 @@
+/*
+ *    Copyright (c) 2023 Udhayarajan M
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ *
+ */
+
+package com.mugames.vidsnapkit.extractor
+
+import com.mugames.vidsnapkit.MimeType
+import com.mugames.vidsnapkit.dataholders.Formats
+import com.mugames.vidsnapkit.dataholders.ImageResource
+import com.mugames.vidsnapkit.dataholders.VideoResource
+import com.mugames.vidsnapkit.toJSONObject
+import org.json.JSONObject
+import java.util.regex.Pattern
+
+
+/**
+ * @author Udhaya
+ * @Created 03-12-2023
+ */
+
+class Snapchat internal constructor(url: String) : Extractor(url) {
+    override suspend fun analyze(payload: Any?) {
+        scratchWebpage(
+            httpRequestService.getResponse(inputUrl) ?: run {
+                clientRequestError()
+                return
+            }
+        )
+    }
+
+    private suspend fun scratchWebpage(webpage: String) {
+        val matcher = Pattern.compile("<script id=\"__NEXT_DATA__\" type=\"application/json\">(\\{.*\\})</script>")
+            .matcher(webpage)
+
+        if (!matcher.find()) {
+            internalError("Unable to detect the contentUrl for $inputUrl")
+            return
+        }
+
+        val responseJSON = matcher.group(1).toJSONObject()
+        val page = responseJSON.getString("page")
+        if (page.contains("/spotlight/")) {
+            extractSpotlight(responseJSON.getJSONObject("props").getJSONObject("pageProps"))
+        } else if (page.contains("/p/")) {
+            extractStories(responseJSON.getJSONObject("props").getJSONObject("pageProps"))
+        } else {
+            missingLogic()
+        }
+    }
+
+    private suspend fun extractStories(pageProps: JSONObject) {
+        missingLogic()
+    }
+
+    private suspend fun extractSpotlight(pageProps: JSONObject) {
+        val videoMetadata = pageProps.getJSONObject("videoMetadata")
+        val format = Formats()
+        format.title = videoMetadata.getString("description")
+        format.videoData.add(
+            VideoResource(
+                videoMetadata.getString("contentUrl"),
+                MimeType.VIDEO_MP4,
+                "${videoMetadata.get("width")}x${videoMetadata.get("height")}",
+            )
+        )
+
+        format.imageData.add(ImageResource(videoMetadata.getString("thumbnailUrl")))
+
+        videoFormats.add(format)
+        finalize()
+    }
+
+    override suspend fun testWebpage(string: String) {
+        TODO("Not yet implemented")
+    }
+}