DNS-over-HTTPS (Adguard) (#5715)

* Update DohProviders.kt

* Update NetworkHelper.kt

* Update SettingsAdvancedController.kt

* fix typo

* Fix typo

* Fix typo

app/src/main/java/eu/kanade/tachiyomi/network/DohProviders.kt

@@ -11,6 +11,7 @@ import java.net.InetAddress
 
 const val PREF_DOH_CLOUDFLARE = 1
 const val PREF_DOH_GOOGLE = 2
+const val PREF_DOH_ADGUARD = 3
 
 fun OkHttpClient.Builder.dohCloudflare() = dns(
     DnsOverHttps.Builder().client(build())
@@ -38,3 +39,16 @@ fun OkHttpClient.Builder.dohGoogle() = dns(
         )
         .build()
 )
+
+// AdGuard "Default" DNS works too but for the sake of making sure no site is blacklisted, i picked "Unfiltered"
+fun OkHttpClient.Builder.dohAdGuard() = dns(
+    DnsOverHttps.Builder().client(build())
+        .url("https://dns-unfiltered.adguard.com/dns-query".toHttpUrl())
+        .bootstrapDnsHosts(
+            InetAddress.getByName("94.140.14.140"),
+            InetAddress.getByName("94.140.14.141"),
+            InetAddress.getByName("2a10:50c0::1:ff"),
+            InetAddress.getByName("2a10:50c0::2:ff"),
+        )
+        .build()
+)

app/src/main/java/eu/kanade/tachiyomi/network/NetworkHelper.kt

@@ -41,6 +41,7 @@ class NetworkHelper(context: Context) {
             when (preferences.dohProvider()) {
                 PREF_DOH_CLOUDFLARE -> builder.dohCloudflare()
                 PREF_DOH_GOOGLE -> builder.dohGoogle()
+                PREF_DOH_ADGUARD -> builder.dohAdGuard()
             }
 
             return builder