Online M4a Converter (WIP)

maintenance-tasks/build.gradle.kts

@@ -22,6 +22,8 @@ dependencies {
     implementation("org.jetbrains.kotlin:kotlin-reflect:${Versions.kotlinVersion}")
     implementation("io.ktor:ktor-client-core:1.5.4")
     implementation("io.ktor:ktor-client-apache:1.5.4")
+    implementation("io.ktor:ktor-client-logging:1.5.4")
+    implementation(Ktor.slf4j)
     implementation("io.ktor:ktor-client-serialization:1.5.4")
     implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.2.1")
     // testDeps

maintenance-tasks/src/main/java/analytics_html_img/Common.kt

@@ -6,6 +6,10 @@ import io.ktor.client.HttpClient
 import io.ktor.client.features.HttpTimeout
 import io.ktor.client.features.json.JsonFeature
 import io.ktor.client.features.json.serializer.KotlinxSerializer
+import io.ktor.client.features.logging.DEFAULT
+import io.ktor.client.features.logging.LogLevel
+import io.ktor.client.features.logging.Logger
+import io.ktor.client.features.logging.Logging
 import kotlinx.serialization.json.Json
 
 internal object Common {
@@ -24,6 +28,10 @@ internal val client = HttpClient {
             }
         )
     }
+    install(Logging) {
+        logger = Logger.DEFAULT
+        level = LogLevel.INFO
+    }
 }
 internal data class GithubFileContent(
     val decryptedContent: String,

maintenance-tasks/src/main/java/audio_conversion/AudioToMp3.kt

@@ -0,0 +1,116 @@
+package audio_conversion
+
+import analytics_html_img.client
+import io.ktor.client.request.forms.formData
+import io.ktor.client.request.forms.submitFormWithBinaryData
+import io.ktor.client.request.get
+import io.ktor.client.request.header
+import io.ktor.client.request.headers
+import io.ktor.client.statement.HttpStatement
+import io.ktor.http.isSuccess
+import kotlinx.coroutines.delay
+import kotlinx.serialization.json.Json
+import utils.debug
+
+interface AudioToMp3 {
+
+    @Suppress("EnumEntryName")
+    enum class Quality(val kbps: String) {
+        `128KBPS`("128"),
+        `160KBPS`("160"),
+        `192KBPS`("192"),
+        `224KBPS`("224"),
+        `256KBPS`("256"),
+        `320KBPS`("320"),
+    }
+
+    suspend fun convertToMp3(
+        URL: String,
+        quality: Quality = kotlin.runCatching { Quality.valueOf(URL.substringBeforeLast(".").takeLast(3)) }.getOrNull() ?: Quality.`160KBPS`,
+    ): String? {
+        val activeHost = getHost() // ex - https://hostveryfast.onlineconverter.com/file/send
+        val jobLink = convertRequest(URL, activeHost, quality) // ex - https://www.onlineconverter.com/convert/309a0f2bbaeb5687b04f96b6d65b47bfdd
+
+        // (jobStatus = "d") == COMPLETION
+        var jobStatus: String
+        var retryCount = 20
+
+        do {
+            jobStatus = try {
+                client.get<String>(
+                    "${activeHost.removeSuffix("send")}${jobLink.substringAfterLast("/")}"
+                )
+            } catch (e: Exception) {
+                e.printStackTrace()
+                ""
+            }
+            retryCount--
+            debug("Job Status", jobStatus)
+            if (!jobStatus.contains("d")) delay(200) // Add Delay , to give Server Time to process audio
+        } while (!jobStatus.contains("d", true) && retryCount != 0)
+
+        return if (jobStatus.equals("d", true)) {
+            // Return MP3 Download Link
+            "${activeHost.removeSuffix("send")}${jobLink.substringAfterLast("/")}/download"
+        } else null
+    }
+
+    /*
+    * Response Link Ex : `https://www.onlineconverter.com/convert/11affb6d88d31861fe5bcd33da7b10a26c`
+    *  - to start the conversion
+    * */
+    private suspend fun convertRequest(
+        URL: String,
+        host: String? = null,
+        quality: Quality = Quality.`320KBPS`,
+    ): String {
+        val activeHost = host ?: getHost()
+        val res = client.submitFormWithBinaryData<String>(
+            url = activeHost,
+            formData = formData {
+                append("class", "audio")
+                append("from", "audio")
+                append("to", "mp3")
+                append("source", "url")
+                append("url", URL.replace("https:", "http:"))
+                append("audio_quality", quality.kbps)
+            }
+        ) {
+            headers {
+                header("Host", activeHost.getHostURL().also { debug(it) })
+                header("Origin", "https://www.onlineconverter.com")
+                header("Referer", "https://www.onlineconverter.com/")
+            }
+        }.run {
+            debug(this)
+            dropLast(3) // last 3 are useless unicode char
+        }
+
+        val job = client.get<HttpStatement>(res) {
+            headers {
+                header("Host", "www.onlineconverter.com")
+            }
+        }.execute()
+        debug("Schedule Job ${job.status.isSuccess()}")
+        return res
+    }
+
+    private suspend fun getHost(): String {
+        return client.get<String>("https://www.onlineconverter.com/get/host") {
+            headers {
+                header("Host", "www.onlineconverter.com")
+            }
+        }.also { debug("Active Host", it) }
+    }
+
+    private fun String.getHostURL(): String {
+        return this.removePrefix("https://").substringBeforeLast(".") + "." + this.substringAfterLast(".").substringBefore("/")
+    }
+
+    companion object {
+        val serializer = Json {
+            ignoreUnknownKeys = true
+            isLenient = true
+        }
+    }
+}

maintenance-tasks/src/main/java/jiosaavn/JioSaavnRequests.kt

@@ -56,6 +56,14 @@ interface JioSaavnRequests {
             .formatData(fetchLyrics)
         return serializer.decodeFromJsonElement(SaavnSong.serializer(), data)
     }
+    suspend fun getSongFromID(
+        ID: String,
+        fetchLyrics: Boolean = false
+    ): SaavnSong {
+        val data = ((serializer.parseToJsonElement(client.get(song_details_base_url + ID)) as JsonObject)[ID] as JsonObject)
+            .formatData(fetchLyrics)
+        return serializer.decodeFromJsonElement(SaavnSong.serializer(), data)
+    }
 
     private suspend fun getSongID(
         URL: String,

maintenance-tasks/src/main/java/utils/TestClass.kt

@@ -1,24 +1,33 @@
 package utils
 
+import audio_conversion.AudioToMp3
 import io.github.shabinder.fuzzywuzzy.diffutils.FuzzySearch
-import jiosaavn.JioSaavnRequests
 import jiosaavn.models.SaavnSearchResult
 import kotlinx.coroutines.runBlocking
 
 // Test Class- at development Time
 fun main(): Unit = runBlocking {
-    val jioSaavnClient = object : JioSaavnRequests {}
+    /*val jioSaavnClient = object : JioSaavnRequests {}
     val resp = jioSaavnClient.searchForSong(
-        query = "Filhall"
+        query = "Ye Faasla"
     )
     println(resp.joinToString("\n"))
 
     val matches = sortByBestMatch(
         tracks = resp,
-        trackName = "Filhall",
+        trackName = "Ye Faasla",
-        trackArtists = listOf("B.Praak", "Nupur Sanon")
+        trackArtists = listOf("Shaan", "Hardy")
     )
     debug(matches.toString())
+
+    val link = matches.keys.firstOrNull()?.let {
+        jioSaavnClient.getSongFromID(it).media_url
+    }
+    debug(link.toString())*/
+    val link = "https://aac.saavncdn.com/787/956c23404206e8f4822827eff5da61a0_320.mp4"
+    val audioConverter = object : AudioToMp3 {}
+    val mp3Link = audioConverter.convertToMp3(link.toString())
+    debug(mp3Link.toString())
 }
 
 private fun sortByBestMatch(