add get chat rooms

2026-05-04 12:08:14 +07:00
parent e02338fd52
commit 109fe28d48
6 changed files with 259 additions and 41 deletions
@@ -0,0 +1,76 @@
+package su.reya.coop
+
+import rust.nostr.sdk.Event
+import rust.nostr.sdk.PublicKey
+import rust.nostr.sdk.TagKind
+import rust.nostr.sdk.Timestamp
+
+enum class RoomKind {
+    Ongoing,
+    Request;
+
+    companion object {
+        fun default(): RoomKind = Request
+    }
+}
+
+data class Room(
+    val id: Long,
+    val createdAt: Timestamp,
+    val subject: String?,
+    val members: Set<PublicKey>,
+    val kind: RoomKind = RoomKind.default()
+) : Comparable<Room> {
+    override fun hashCode(): Int = id.hashCode()
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (other !is Room) return false
+        return id == other.id
+    }
+
+    override fun compareTo(other: Room): Int {
+        return this.createdAt.asSecs().compareTo(other.createdAt.asSecs())
+    }
+
+    companion object {
+        fun new(rumor: Event, userPubkey: PublicKey): Room {
+            val id = rumor.roomId()
+            val createdAt = rumor.createdAt()
+            val subject = rumor.tags().find(TagKind.Subject)?.content()
+
+            // Collect the author's public key and all public keys from tags
+            // Also remove the user's public key from the list
+            val pubkeys: MutableSet<PublicKey> = mutableSetOf()
+            pubkeys.add(rumor.author())
+            pubkeys.addAll(rumor.tags().publicKeys())
+            pubkeys.remove(userPubkey)
+
+            // Create a new Room instance
+            return Room(
+                id = id,
+                createdAt = createdAt,
+                subject = subject,
+                members = pubkeys as Set<PublicKey>
+            )
+        }
+    }
+
+    fun kind(kind: RoomKind): Room {
+        return this.copy(kind = kind)
+    }
+}
+
+fun Event.roomId(): Long {
+    // Collect the author's public key and all public keys from tags
+    val pubkeys: MutableList<PublicKey> = mutableListOf()
+    pubkeys.add(this.author())
+    pubkeys.addAll(this.tags().publicKeys())
+
+    // Sort and hash the list of public keys
+    val sortedUniqueKeys = pubkeys
+        .distinctBy { it.toBech32() }
+        .sortedBy { it.toBech32() }
+
+    return sortedUniqueKeys.hashCode().toLong()
+}