Migrates contact list management to addressable notes

Creates new observable flows for LocalCache.

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip02FollowList/ContactListEvent.kt

@@ -21,13 +21,16 @@
 package com.vitorpamplona.quartz.nip02FollowList
 
 import androidx.compose.runtime.Stable
+import com.vitorpamplona.quartz.nip01Core.core.Address
 import com.vitorpamplona.quartz.nip01Core.core.BaseAddressableEvent
 import com.vitorpamplona.quartz.nip01Core.core.HexKey
+import com.vitorpamplona.quartz.nip01Core.core.any
 import com.vitorpamplona.quartz.nip01Core.hints.PubKeyHintProvider
 import com.vitorpamplona.quartz.nip01Core.relay.normalizer.NormalizedRelayUrl
 import com.vitorpamplona.quartz.nip01Core.relay.normalizer.RelayUrlNormalizer
 import com.vitorpamplona.quartz.nip01Core.signers.NostrSigner
 import com.vitorpamplona.quartz.nip01Core.signers.NostrSignerSync
+import com.vitorpamplona.quartz.nip01Core.tags.aTag.ATag
 import com.vitorpamplona.quartz.nip01Core.tags.people.isTaggedUser
 import com.vitorpamplona.quartz.nip02FollowList.tags.ContactTag
 import com.vitorpamplona.quartz.nip31Alts.AltTag
@@ -56,7 +59,11 @@ class ContactListEvent(
 
     fun follows() = tags.mapNotNull(ContactTag::parseValid)
 
-    fun relays(): Map<NormalizedRelayUrl, ReadWrite>? {
+    fun isFollowing(pubKey: HexKey) = tags.any(ContactTag::isTagged, pubKey)
+
+    fun followCount() = tags.count(ContactTag::isTagged)
+
+    fun relays(): Map<NormalizedRelayUrl, ReadWrite> {
         val regular = RelaySet.parse(content)
 
         val normalized = mutableMapOf<NormalizedRelayUrl, ReadWrite>()
@@ -75,6 +82,12 @@ class ContactListEvent(
         const val KIND = 3
         const val ALT = "Follow List"
 
+        fun createAddress(pubKey: HexKey): Address = Address(KIND, pubKey)
+
+        fun createAddressATag(pubKey: HexKey): ATag = ATag(KIND, pubKey)
+
+        fun createAddressTag(pubKey: HexKey): String = Address.assemble(KIND, pubKey)
+
         fun blockListFor(pubKeyHex: HexKey): String = "3:$pubKeyHex:"
 
         suspend fun createFromScratch(

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip02FollowList/tags/ContactTag.kt

@@ -54,7 +54,12 @@ data class ContactTag(
     companion object {
         const val TAG_NAME = "p"
 
-        fun isTagged(tag: Array<String>) = tag.has(1) && tag[0] == TAG_NAME && tag[1].isNotEmpty()
+        fun isTagged(tag: Array<String>) = tag.has(1) && tag[0] == TAG_NAME && tag[1].length == 64
+
+        fun isTagged(
+            tag: Array<String>,
+            pubkey: HexKey,
+        ) = tag.has(1) && tag[0] == TAG_NAME && tag[1] == pubkey
 
         fun parse(tag: Array<String>): ContactTag? {
             ensure(tag.has(1)) { return null }