Adds support for search relay lists

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

@@ -131,6 +131,7 @@ class EventFactory {
             ReportEvent.KIND -> ReportEvent(id, pubKey, createdAt, tags, content, sig)
             RepostEvent.KIND -> RepostEvent(id, pubKey, createdAt, tags, content, sig)
             SealedGossipEvent.KIND -> SealedGossipEvent(id, pubKey, createdAt, tags, content, sig)
+            SearchRelayListEvent.KIND -> SearchRelayListEvent(id, pubKey, createdAt, tags, content, sig)
             StatusEvent.KIND -> StatusEvent(id, pubKey, createdAt, tags, content, sig)
             TextNoteEvent.KIND -> TextNoteEvent(id, pubKey, createdAt, tags, content, sig)
             TextNoteModificationEvent.KIND -> TextNoteModificationEvent(id, pubKey, createdAt, tags, content, sig)

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

@@ -0,0 +1,103 @@
+/**
+ * Copyright (c) 2024 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+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
+
+@Immutable
+class SearchRelayListEvent(
+    id: HexKey,
+    pubKey: HexKey,
+    createdAt: Long,
+    tags: Array<Array<String>>,
+    content: String,
+    sig: HexKey,
+) : BaseAddressableEvent(id, pubKey, createdAt, KIND, tags, content, sig) {
+    override fun dTag() = FIXED_D_TAG
+
+    fun relays(): List<String> {
+        return tags.mapNotNull {
+            if (it.size > 1 && it[0] == "relay") {
+                it[1]
+            } else {
+                null
+            }
+        }
+    }
+
+    companion object {
+        const val KIND = 10007
+        const val FIXED_D_TAG = ""
+
+        fun createAddressATag(pubKey: HexKey): ATag {
+            return ATag(KIND, pubKey, FIXED_D_TAG, null)
+        }
+
+        fun createAddressTag(pubKey: HexKey): String {
+            return ATag.assembleATag(KIND, pubKey, FIXED_D_TAG)
+        }
+
+        fun createTagArray(relays: List<String>): Array<Array<String>> {
+            return relays.map {
+                arrayOf("relay", it)
+            }.plusElement(arrayOf("alt", "Relay list to use for Search")).toTypedArray()
+        }
+
+        fun updateRelayList(
+            earlierVersion: SearchRelayListEvent,
+            relays: List<String>,
+            signer: NostrSigner,
+            createdAt: Long = TimeUtils.now(),
+            onReady: (SearchRelayListEvent) -> Unit,
+        ) {
+            val tags =
+                earlierVersion.tags.filter { it[0] != "relay" }.plus(
+                    relays.map {
+                        arrayOf("relay", it)
+                    },
+                ).toTypedArray()
+
+            signer.sign(createdAt, KIND, tags, earlierVersion.content, onReady)
+        }
+
+        fun createFromScratch(
+            relays: List<String>,
+            signer: NostrSigner,
+            createdAt: Long = TimeUtils.now(),
+            onReady: (SearchRelayListEvent) -> Unit,
+        ) {
+            create(relays, signer, createdAt, onReady)
+        }
+
+        fun create(
+            relays: List<String>,
+            signer: NostrSigner,
+            createdAt: Long = TimeUtils.now(),
+            onReady: (SearchRelayListEvent) -> Unit,
+        ) {
+            signer.sign(createdAt, KIND, createTagArray(relays), "", onReady)
+        }
+    }
+}