Address Build Warnings and Cleanup (#707)

* Address build warnings and cleanup

* Actual name of who defined the protocol

* Remove uneeded detekt supression

* GraphQL Before-After cleanup

* Lint

* Cleanup unused functions

* Fix some discrepancies with the 1.5 source api and fix lang exception

server/src/main/kotlin/eu/kanade/tachiyomi/network/JavaScriptEngine.kt

@@ -8,7 +8,9 @@ import kotlinx.coroutines.withContext
 /**
  * Util for evaluating JavaScript in sources.
  */
-class JavaScriptEngine(context: Context) {
+class JavaScriptEngine(
+    @Suppress("UNUSED_PARAMETER") context: Context,
+) {
     /**
      * Evaluate arbitrary JavaScript code and get the result as a primitive type
      * (e.g., String, Int).

server/src/main/kotlin/eu/kanade/tachiyomi/network/interceptor/CloudflareInterceptor.kt

@@ -25,6 +25,7 @@ class CloudflareInterceptor : Interceptor {
 
     private val network: NetworkHelper by injectLazy()
 
+    @Suppress("UNUSED_VARIABLE", "UNREACHABLE_CODE")
     override fun intercept(chain: Interceptor.Chain): Response {
         val originalRequest = chain.request()
 
@@ -141,6 +142,7 @@ object CFClearance {
             .build()
     }
 
+    @Suppress("UNREACHABLE_CODE")
     fun getWebViewUserAgent(): String {
         return try {
             throw PlaywrightException("playwrite is diabled for v0.6.7")

server/src/main/kotlin/eu/kanade/tachiyomi/source/CatalogueSource.kt

@@ -9,7 +9,7 @@ interface CatalogueSource : Source {
     /**
      * An ISO 639-1 compliant language code (two letters in lower case).
      */
-    val lang: String
+    override val lang: String
 
     /**
      * Whether the source has support for latest updates.

server/src/main/kotlin/eu/kanade/tachiyomi/source/ConfigurableSource.kt

@@ -18,8 +18,10 @@ interface ConfigurableSource : Source {
     fun setupPreferenceScreen(screen: PreferenceScreen)
 }
 
-private fun ConfigurableSource.preferenceKey(): String = "source_$id"
+fun ConfigurableSource.preferenceKey(): String = "source_$id"
 
 // TODO: use getSourcePreferences once all extensions are on ext-lib 1.5
 fun ConfigurableSource.sourcePreferences(): SharedPreferences =
     Injekt.get<Application>().getSharedPreferences(preferenceKey(), Context.MODE_PRIVATE)
+
+fun sourcePreferences(key: String): SharedPreferences = Injekt.get<Application>().getSharedPreferences(key, Context.MODE_PRIVATE)

server/src/main/kotlin/eu/kanade/tachiyomi/source/Source.kt

@@ -7,11 +7,11 @@ import rx.Observable
 import suwayomi.tachidesk.manga.impl.util.lang.awaitSingle
 
 /**
- * A basic interface for creating a source. It could be an online source, a local source, etc...
+ * A basic interface for creating a source. It could be an online source, a local source, etc.
  */
 interface Source {
     /**
-     * Id for the source. Must be unique.
+     * ID for the source. Must be unique.
      */
     val id: Long
 
@@ -20,6 +20,9 @@ interface Source {
      */
     val name: String
 
+    val lang: String
+        get() = ""
+
     /**
      * Get the updated details for a manga.
      *
@@ -73,9 +76,7 @@ interface Source {
         "Use the non-RxJava API instead",
         ReplaceWith("getPageList"),
     )
-    fun fetchPageList(chapter: SChapter): Observable<List<Page>> = Observable.empty()
+    fun fetchPageList(chapter: SChapter): Observable<List<Page>> = throw IllegalStateException("Not used")
 }
 
 // fun Source.icon(): Drawable? = Injekt.get<ExtensionManager>().getAppIconForSource(this)
-
-fun Source.getPreferenceKey(): String = "source_$id"

server/src/main/kotlin/eu/kanade/tachiyomi/source/local/LocalSource.kt

@@ -32,6 +32,7 @@ import kotlinx.coroutines.withContext
 import kotlinx.serialization.json.Json
 import kotlinx.serialization.json.decodeFromStream
 import mu.KotlinLogging
+import nl.adaptivity.xmlutil.ExperimentalXmlUtilApi
 import nl.adaptivity.xmlutil.core.KtXmlReader
 import nl.adaptivity.xmlutil.serialization.XML
 import org.apache.commons.compress.archivers.zip.ZipFile
@@ -271,6 +272,7 @@ class LocalSource(
         }
     }
 
+    @OptIn(ExperimentalXmlUtilApi::class)
     private fun setMangaDetailsFromComicInfoFile(
         stream: InputStream,
         manga: SManga,

server/src/main/kotlin/eu/kanade/tachiyomi/source/online/HttpSource.kt

@@ -26,18 +26,12 @@ import java.security.MessageDigest
 /**
  * A simple implementation for sources from a website.
  */
+@Suppress("unused")
 abstract class HttpSource : CatalogueSource {
     /**
      * Network service.
      */
-    val network: NetworkHelper by injectLazy()
-
-//    /**
-//     * Preferences that a source may need.
-//     */
-//    val preferences: SharedPreferences by lazy {
-//        Injekt.get<Application>().getSharedPreferences(source.getPreferenceKey(), Context.MODE_PRIVATE)
-//    }
+    protected val network: NetworkHelper by injectLazy()
 
     /**
      * Base url of the website without the trailing slash, like: http://mysite.com
@@ -60,7 +54,7 @@ abstract class HttpSource : CatalogueSource {
      *
      * Note: the generated ID sets the sign bit to `0`.
      */
-    override val id by lazy { generateId(name, lang, versionId) }
+    override val id by lazy { generateId() }
 
     /**
      * Headers used for requests.
@@ -73,6 +67,10 @@ abstract class HttpSource : CatalogueSource {
     open val client: OkHttpClient
         get() = network.client
 
+    private fun generateId(): Long {
+        return generateId(name, lang, versionId)
+    }
+
     /**
      * Generates a unique ID for the source based on the provided [name], [lang] and
      * [versionId]. It will use the first 16 characters (64 bits) of the MD5 of the string
@@ -89,6 +87,7 @@ abstract class HttpSource : CatalogueSource {
      * @param versionId [Int] the version ID of the source
      * @return a unique ID for the source
      */
+    @Suppress("MemberVisibilityCanBePrivate")
     protected fun generateId(
         name: String,
         lang: String,
@@ -155,8 +154,15 @@ abstract class HttpSource : CatalogueSource {
         query: String,
         filters: FilterList,
     ): Observable<MangasPage> {
-        return client.newCall(searchMangaRequest(page, query, filters))
-            .asObservableSuccess()
+        return Observable.defer {
+            try {
+                client.newCall(searchMangaRequest(page, query, filters)).asObservableSuccess()
+            } catch (e: NoClassDefFoundError) {
+                // RxJava doesn't handle Errors, which tends to happen during global searches
+                // if an old extension using non-existent classes is still around
+                throw RuntimeException(e)
+            }
+        }
             .map { response ->
                 searchMangaParse(response)
             }
@@ -387,7 +393,7 @@ abstract class HttpSource : CatalogueSource {
      *
      * @param page the chapter whose page list has to be fetched
      */
-    open fun imageRequest(page: Page): Request {
+    protected open fun imageRequest(page: Page): Request {
         return GET(page.imageUrl!!, headers)
     }
 
@@ -418,7 +424,7 @@ abstract class HttpSource : CatalogueSource {
      */
     private fun getUrlWithoutDomain(orig: String): String {
         return try {
-            val uri = URI(orig)
+            val uri = URI(orig.replace(" ", "%20"))
             var out = uri.path
             if (uri.query != null) {
                 out += "?" + uri.query