Enabling download and creation of NIP-96 file servers.

app/src/main/java/com/vitorpamplona/amethyst/model/Account.kt

@@ -2161,17 +2161,6 @@ class Account(
         return LocalCache.getOrCreateAddressableNote(aTag)
     }
 
-    fun getFileServersNote(): AddressableNote {
-        val aTag =
-            ATag(
-                FileServersEvent.KIND,
-                userProfile().pubkeyHex,
-                "",
-                null,
-            )
-        return LocalCache.getOrCreateAddressableNote(aTag)
-    }
-
     fun getBlockList(): PeopleListEvent? {
         return getBlockListNote().event as? PeopleListEvent
     }
@@ -2180,10 +2169,6 @@ class Account(
         return getMuteListNote().event as? MuteListEvent
     }
 
-    fun getFileServersList(): FileServersEvent? {
-        return getFileServersNote().event as? FileServersEvent
-    }
-
     fun hideWord(word: String) {
         val muteList = getMuteList()
 
@@ -2688,10 +2673,7 @@ class Account(
     fun saveSearchRelayList(searchRelays: List<String>) {
         if (!isWriteable()) return
 
-        val relayListForSearch =
+        val relayListForSearch = getSearchRelayList()
-            LocalCache.getOrCreateAddressableNote(
-                SearchRelayListEvent.createAddressATag(signer.pubKey),
-            ).event as? SearchRelayListEvent
 
         if (relayListForSearch != null && relayListForSearch.tags.isNotEmpty()) {
             SearchRelayListEvent.updateRelayList(
@@ -2730,10 +2712,7 @@ class Account(
     fun sendNip65RelayList(relays: List<AdvertisedRelayListEvent.AdvertisedRelayInfo>) {
         if (!isWriteable()) return
 
-        val nip65RelayList =
+        val nip65RelayList = getNIP65RelayList()
-            LocalCache.getOrCreateAddressableNote(
-                AdvertisedRelayListEvent.createAddressATag(signer.pubKey),
-            ).event as? AdvertisedRelayListEvent
 
         if (nip65RelayList != null) {
             AdvertisedRelayListEvent.updateRelayList(
@@ -2755,6 +2734,43 @@ class Account(
         }
     }
 
+    fun getFileServersList(): FileServersEvent? {
+        return getFileServersNote().event as? FileServersEvent
+    }
+
+    fun getFileServersListFlow(): StateFlow<NoteState> {
+        return getFileServersNote().flow().metadata.stateFlow
+    }
+
+    fun getFileServersNote(): AddressableNote {
+        return LocalCache.getOrCreateAddressableNote(FileServersEvent.createAddressATag(userProfile().pubkeyHex))
+    }
+
+    fun sendFileServersList(servers: List<String>) {
+        if (!isWriteable()) return
+
+        val serverList = getFileServersList()
+
+        if (serverList != null && serverList.tags.isNotEmpty()) {
+            FileServersEvent.updateRelayList(
+                earlierVersion = serverList,
+                relays = servers,
+                signer = signer,
+            ) {
+                Client.send(it)
+                LocalCache.justConsume(it, null)
+            }
+        } else {
+            FileServersEvent.createFromScratch(
+                relays = servers,
+                signer = signer,
+            ) {
+                Client.send(it)
+                LocalCache.justConsume(it, null)
+            }
+        }
+    }
+
     fun setHideDeleteRequestDialog() {
         hideDeleteRequestDialog = true
         saveable.invalidateData()

app/src/main/java/com/vitorpamplona/amethyst/service/NostrAccountDataSource.kt

@@ -45,6 +45,7 @@ import com.vitorpamplona.quartz.events.DraftEvent
 import com.vitorpamplona.quartz.events.EmojiPackSelectionEvent
 import com.vitorpamplona.quartz.events.Event
 import com.vitorpamplona.quartz.events.EventInterface
+import com.vitorpamplona.quartz.events.FileServersEvent
 import com.vitorpamplona.quartz.events.GenericRepostEvent
 import com.vitorpamplona.quartz.events.GiftWrapEvent
 import com.vitorpamplona.quartz.events.GitIssueEvent
@@ -123,6 +124,7 @@ object NostrAccountDataSource : NostrDataSource("AccountData") {
                             AdvertisedRelayListEvent.KIND,
                             ChatMessageRelayListEvent.KIND,
                             SearchRelayListEvent.KIND,
+                            FileServersEvent.KIND,
                             MuteListEvent.KIND,
                             PeopleListEvent.KIND,
                         ),

quartz/src/main/java/com/vitorpamplona/quartz/events/FileServersEvent.kt

@@ -21,6 +21,7 @@
 package com.vitorpamplona.quartz.events
 
 import androidx.compose.runtime.Immutable
+import com.vitorpamplona.quartz.encoders.ATag
 import com.vitorpamplona.quartz.encoders.HexKey
 import com.vitorpamplona.quartz.signers.NostrSigner
 import com.vitorpamplona.quartz.utils.TimeUtils
@@ -36,24 +37,68 @@ class FileServersEvent(
 ) : BaseAddressableEvent(id, pubKey, createdAt, KIND, tags, content, sig) {
     override fun dTag() = FIXED_D_TAG
 
+    fun servers(): List<String> {
+        return tags.mapNotNull {
+            if (it.size > 1 && it[0] == "relay") {
+                it[1]
+            } else {
+                null
+            }
+        }
+    }
+
     companion object {
         const val KIND = 10096
         const val FIXED_D_TAG = ""
         const val ALT = "File servers used by the author"
 
-        fun create(
+        fun createAddressATag(pubKey: HexKey): ATag {
-            listOfServers: List<String>,
+            return ATag(KIND, pubKey, FIXED_D_TAG, null)
+        }
+
+        fun createAddressTag(pubKey: HexKey): String {
+            return ATag.assembleATag(KIND, pubKey, FIXED_D_TAG)
+        }
+
+        fun createTagArray(servers: List<String>): Array<Array<String>> {
+            return servers.map {
+                arrayOf("server", it)
+            }.plusElement(arrayOf("alt", "Relay list to use for Search")).toTypedArray()
+        }
+
+        fun updateRelayList(
+            earlierVersion: FileServersEvent,
+            relays: List<String>,
             signer: NostrSigner,
             createdAt: Long = TimeUtils.now(),
             onReady: (FileServersEvent) -> Unit,
         ) {
-            val msg = ""
+            val tags =
-            val tags = mutableListOf<Array<String>>()
+                earlierVersion.tags.filter { it[0] != "server" }.plus(
+                    relays.map {
+                        arrayOf("server", it)
+                    },
+                ).toTypedArray()
 
-            listOfServers.forEach { tags.add(arrayOf("server", it)) }
+            signer.sign(createdAt, KIND, tags, earlierVersion.content, onReady)
-            tags.add(arrayOf("alt", ALT))
+        }
 
-            signer.sign(createdAt, KIND, tags.toTypedArray(), msg, onReady)
+        fun createFromScratch(
+            relays: List<String>,
+            signer: NostrSigner,
+            createdAt: Long = TimeUtils.now(),
+            onReady: (FileServersEvent) -> Unit,
+        ) {
+            create(relays, signer, createdAt, onReady)
+        }
+
+        fun create(
+            servers: List<String>,
+            signer: NostrSigner,
+            createdAt: Long = TimeUtils.now(),
+            onReady: (FileServersEvent) -> Unit,
+        ) {
+            signer.sign(createdAt, KIND, createTagArray(servers), "", onReady)
         }
     }
 }