refactor: add Pubkey, Privkey, NoteId string aliases

This is a non-behavioral change in preparation for the actual switchover
from Strings to Ids. The purpose of this kit is to reduce the size of
the switchover commit which is going to be very large.

damus/Models/Contacts.swift

@@ -9,21 +9,21 @@ import Foundation
 
 
 class Contacts {
-    private var friends: Set<String> = Set()
-    private var friend_of_friends: Set<String> = Set()
+    private var friends: Set<Pubkey> = Set()
+    private var friend_of_friends: Set<Pubkey> = Set()
     /// Tracks which friends are friends of a given pubkey.
-    private var pubkey_to_our_friends = [String : Set<String>]()
-    private var muted: Set<String> = Set()
-    
-    let our_pubkey: String
+    private var pubkey_to_our_friends = [Pubkey : Set<Pubkey>]()
+    private var muted: Set<Pubkey> = Set()
+
+    let our_pubkey: Pubkey
     var event: NostrEvent?
     var mutelist: NostrEvent?
     
-    init(our_pubkey: String) {
+    init(our_pubkey: Pubkey) {
         self.our_pubkey = our_pubkey
     }
     
-    func is_muted(_ pk: String) -> Bool {
+    func is_muted(_ pk: Pubkey) -> Bool {
         return muted.contains(pk)
     }
     
@@ -58,7 +58,7 @@ class Contacts {
         }
     }
     
-    func remove_friend(_ pubkey: String) {
+    func remove_friend(_ pubkey: Pubkey) {
         friends.remove(pubkey)
 
         pubkey_to_our_friends.forEach {
@@ -66,7 +66,7 @@ class Contacts {
         }
     }
     
-    func get_friend_list() -> Set<String> {
+    func get_friend_list() -> Set<Pubkey> {
         return friends
     }
 
@@ -75,7 +75,7 @@ class Contacts {
         return Set(ev.referenced_hashtags.map({ $0.ref_id.string() }))
     }
 
-    func add_friend_pubkey(_ pubkey: String) {
+    func add_friend_pubkey(_ pubkey: Pubkey) {
         friends.insert(pubkey)
     }
     
@@ -88,7 +88,7 @@ class Contacts {
             // Exclude themself and us.
             if contact.pubkey != our_pubkey && contact.pubkey != pk {
                 if pubkey_to_our_friends[pk] == nil {
-                    pubkey_to_our_friends[pk] = Set<String>()
+                    pubkey_to_our_friends[pk] = Set<Pubkey>()
                 }
 
                 pubkey_to_our_friends[pk]?.insert(contact.pubkey)
@@ -96,28 +96,28 @@ class Contacts {
         }
     }
     
-    func is_friend_of_friend(_ pubkey: String) -> Bool {
+    func is_friend_of_friend(_ pubkey: Pubkey) -> Bool {
         return friend_of_friends.contains(pubkey)
     }
     
-    func is_in_friendosphere(_ pubkey: String) -> Bool {
+    func is_in_friendosphere(_ pubkey: Pubkey) -> Bool {
         return friends.contains(pubkey) || friend_of_friends.contains(pubkey)
     }
 
-    func is_friend(_ pubkey: String) -> Bool {
+    func is_friend(_ pubkey: Pubkey) -> Bool {
         return friends.contains(pubkey)
     }
     
-    func is_friend_or_self(_ pubkey: String) -> Bool {
+    func is_friend_or_self(_ pubkey: Pubkey) -> Bool {
         return pubkey == our_pubkey || is_friend(pubkey)
     }
     
-    func follow_state(_ pubkey: String) -> FollowState {
+    func follow_state(_ pubkey: Pubkey) -> FollowState {
         return is_friend(pubkey) ? .follows : .unfollows
     }
 
     /// Gets the list of pubkeys of our friends who follow the given pubkey.
-    func get_friended_followers(_ pubkey: String) -> [String] {
+    func get_friended_followers(_ pubkey: Pubkey) -> [Pubkey] {
         return Array((pubkey_to_our_friends[pubkey] ?? Set()))
     }
 }