Allow removing friends from leaderboard

app/bot.py

@@ -106,6 +106,16 @@ def parse_cancellation(raw: str) -> int:
     return transaction_id
 
 
+def parse_friend_removal(raw: str) -> int:
+    payload = decode_payload(raw)
+    if payload.get("type") != "friend_remove" or payload.get("v") != 1:
+        raise ValueError("Неизвестный формат данных")
+    friend_user_id = payload.get("friend_user_id")
+    if not isinstance(friend_user_id, int) or friend_user_id <= 0:
+        raise ValueError("Некорректный ID друга")
+    return friend_user_id
+
+
 class TelegramBotService:
     def __init__(self, settings: Settings, database: Database):
         self.settings = settings
@@ -187,6 +197,11 @@ class TelegramBotService:
                     if not self.database.cancel_transaction(user.id, transaction_id):
                         raise ValueError("Запись не найдена или уже отменена")
                     response = "Запись отменена и больше не участвует в расчётах."
+                elif action == "friend_remove":
+                    friend_user_id = parse_friend_removal(raw)
+                    if not self.database.remove_friendship(user.id, friend_user_id):
+                        raise ValueError("Пользователь не найден в списке друзей")
+                    response = "Пользователь удалён из друзей."
                 else:
                     raise ValueError("Неизвестный формат данных")
             except ValueError as exc:

app/db.py

@@ -298,6 +298,18 @@ class Database:
             ).fetchall()
         return [int(row["friend_id"]) for row in rows]
 
+    def remove_friendship(self, first_user_id: int, second_user_id: int) -> bool:
+        if first_user_id == second_user_id:
+            return False
+        low, high = sorted((first_user_id, second_user_id))
+        with closing(self.connect()) as connection:
+            cursor = connection.execute(
+                "DELETE FROM friendships WHERE user_id_low = ? AND user_id_high = ?",
+                (low, high),
+            )
+            connection.commit()
+            return cursor.rowcount > 0
+
     def set_meta(self, key: str, value: str) -> None:
         with closing(self.connect()) as connection:
             connection.execute(

static/app.js

@@ -449,13 +449,36 @@
         ? `<img class="leader-avatar" src="..${item.avatar_url}" alt="" loading="lazy" />`
         : `<span class="leader-avatar avatar-fallback">${initial}</span>`;
       const percent = Number(item.saved_percent);
+      const canRemove = state.board === "friends" && item.user_id !== userId;
       return `<div class="leader-row ${item.user_id === userId ? "me" : ""}">
         <span class="rank">${index + 1}</span>
         ${avatar}
-        <span class="leader-name"><strong>${escapeHtml(item.nickname)}</strong><small>${item.user_id === userId ? "Это вы" : money.format(item.balance_cents / 100)}</small></span>
+        <span class="leader-name"><strong>${escapeHtml(item.nickname)}</strong>${item.user_id === userId ? "<small>Это вы</small>" : ""}</span>
-        <span class="leader-percent ${percent < 0 ? "negative" : ""}">${percent.toLocaleString("ru-RU", { maximumFractionDigits: 1 })}%</span>
+        <span class="leader-actions">
+          <strong class="leader-percent ${percent < 0 ? "negative" : ""}">${percent.toLocaleString("ru-RU", { maximumFractionDigits: 1 })}%</strong>
+          ${canRemove ? `<button class="friend-remove" type="button" data-friend-user-id="${item.user_id}">Удалить</button>` : ""}
+        </span>
       </div>`;
     }).join("");
+    list.querySelectorAll(".friend-remove").forEach((button) => {
+      button.addEventListener("click", () => removeFriend(Number(button.dataset.friendUserId)));
+    });
+  }
+
+  function removeFriend(friendUserId) {
+    const send = (confirmed) => {
+      if (!confirmed) return;
+      sendTelegramPayload({ v: 1, type: "friend_remove", friend_user_id: friendUserId });
+    };
+    if (tg?.showConfirm && tg.isVersionAtLeast?.("6.2")) {
+      try {
+        tg.showConfirm("Удалить пользователя из друзей?", send);
+        return;
+      } catch (error) {
+        console.warn("Telegram confirmation failed", error);
+      }
+    }
+    send(window.confirm("Удалить пользователя из друзей?"));
   }
 
   async function shareInvite() {

static/index.html

@@ -6,9 +6,9 @@
     <meta name="color-scheme" content="dark" />
     <meta name="theme-color" content="#111111" />
     <title>Пожитки</title>
-    <link rel="stylesheet" href="./styles.css?v=18" />
+    <link rel="stylesheet" href="./styles.css?v=19" />
     <script src="./telegram-web-app.js"></script>
-    <script src="./app.js?v=17" defer></script>
+    <script src="./app.js?v=19" defer></script>
   </head>
   <body>
     <main class="shell">

static/styles.css

@@ -200,8 +200,10 @@ h2 { margin: 0; font-size: 23px; letter-spacing: -.025em; }
 .leader-name { min-width: 0; }
 .leader-name strong { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: 13px; }
 .leader-name small { color: var(--muted); font-size: 10px; }
+.leader-actions { display: grid; justify-items: end; gap: 4px; }
 .leader-percent { font-size: 15px; font-weight: 850; color: var(--accent); }
 .leader-percent.negative { color: var(--danger); }
+.friend-remove { padding: 1px 0; border: 0; background: transparent; color: var(--danger); font-size: 10px; }
 .friend-hint { margin: 13px 18px; color: var(--muted); font-size: 11px; line-height: 1.5; text-align: center; }
 
 .bottom-nav { position: fixed; z-index: 10; bottom: max(12px, calc(var(--app-safe-bottom) + 8px)); left: 50%; display: flex; align-items: stretch; gap: 9px; width: min(340px, calc(100% - var(--app-safe-left) - var(--app-safe-right) - 24px)); height: 54px; transform: translateX(-50%); }

tests/test_core.py

@@ -5,6 +5,7 @@ import pytest
 from app.bot import (
     parse_cancellation,
     parse_category,
+    parse_friend_removal,
     parse_transaction,
     webapp_url_for_user,
 )
@@ -56,6 +57,13 @@ def test_friendship_is_symmetric_and_idempotent(tmp_path: Path) -> None:
     assert not database.add_friendship(3, 7)
     assert database.friend_ids(3) == [7]
     assert database.friend_ids(7) == [3]
+    assert database.remove_friendship(3, 7)
+    assert database.friend_ids(3) == []
+    assert database.friend_ids(7) == []
+    assert not database.remove_friendship(3, 7)
+    assert parse_friend_removal(
+        '{"v":1,"type":"friend_remove","friend_user_id":7}'
+    ) == 7
 
 
 def test_filtered_leaderboard(tmp_path: Path) -> None: