Nostr geohash (#276)

* first nostr build * add test file * internet access * fix relay manager * fix serialization * demo service - remove later * fix nostr * event dedupe * dedupe * ui wip * can send messages * subscription works * works * favs * works * delete chat on change * fix mentions * remove autojoin channels * styling * adjust colors * ui changes * live updates working * use local timestamp * message history in background * robust * fixes * nicknames refresh optimization * nostr service * refactor nostr * style * geohash works * centralize colors * refactoring * disable DMs for now: click on peer nickname doesnt open chat list in geohash mode * use local time * less logging * robustness * scroll nickname * adjust some text
2026-07-25 08:45:20 +00:00 · 2025-08-22 19:09:18 +02:00
parent 848cffee07
commit 7243d841a3
35 changed files with 7859 additions and 171 deletions
@@ -0,0 +1,72 @@
+package com.bitchat.android.geohash
+
+/**
+ * Levels of location channels mapped to geohash precisions.
+ * Direct port from iOS implementation for 100% compatibility
+ */
+enum class GeohashChannelLevel(val precision: Int, val displayName: String) {
+    BLOCK(7, "Block"),
+    NEIGHBORHOOD(6, "Neighborhood"),
+    CITY(5, "City"),
+    REGION(4, "Region"),
+    COUNTRY(2, "Country");
+    
+    companion object {
+        fun allCases(): List<GeohashChannelLevel> = values().toList()
+    }
+}
+
+/**
+ * A computed geohash channel option.
+ * Direct port from iOS implementation
+ */
+data class GeohashChannel(
+    val level: GeohashChannelLevel,
+    val geohash: String
+) {
+    val id: String get() = "${level.name}-$geohash"
+    
+    val displayName: String get() = "${level.displayName} • $geohash"
+}
+
+/**
+ * Identifier for current public chat channel (mesh or a location geohash).
+ * Direct port from iOS implementation
+ */
+sealed class ChannelID {
+    object Mesh : ChannelID()
+    data class Location(val channel: GeohashChannel) : ChannelID()
+    
+    /**
+     * Human readable name for UI.
+     */
+    val displayName: String
+        get() = when (this) {
+            is Mesh -> "Mesh"
+            is Location -> channel.displayName
+        }
+    
+    /**
+     * Nostr tag value for scoping (geohash), if applicable.
+     */
+    val nostrGeohashTag: String?
+        get() = when (this) {
+            is Mesh -> null
+            is Location -> channel.geohash
+        }
+    
+    override fun equals(other: Any?): Boolean {
+        return when {
+            this is Mesh && other is Mesh -> true
+            this is Location && other is Location -> this.channel == other.channel
+            else -> false
+        }
+    }
+    
+    override fun hashCode(): Int {
+        return when (this) {
+            is Mesh -> "mesh".hashCode()
+            is Location -> channel.hashCode()
+        }
+    }
+}