Implement pagination and detailed views for ad campaigns in admin panel

- Added pagination support for the ads list, allowing admins to navigate through multiple pages of campaigns.
- Introduced detailed views for individual ad campaigns, displaying comprehensive statistics and information.
- Enhanced the database access layer with new methods for counting and listing campaigns with pagination.
- Updated localization files to include new strings for the ads overview and campaign details.
- Improved the inline keyboard structure for better navigation within the ads management interface.

bot/keyboards/inline/admin_keyboards.py

@@ -131,6 +131,67 @@ def get_ads_menu_keyboard(i18n_instance, lang: str) -> InlineKeyboardMarkup:
     return builder.as_markup()
 
 
+def get_ads_list_keyboard(
+    i18n_instance,
+    lang: str,
+    campaigns: list,
+    current_page: int,
+    total_pages: int,
+) -> InlineKeyboardMarkup:
+    _ = lambda key, **kwargs: i18n_instance.gettext(lang, key, **kwargs)
+    builder = InlineKeyboardBuilder()
+
+    for c in campaigns:
+        title = f"{c.source}"
+        builder.button(
+            text=title,
+            callback_data=f"admin_ads:card:{c.ad_campaign_id}:{current_page}",
+        )
+
+    # Pagination row
+    row = []
+    if current_page > 0:
+        row.append(
+            InlineKeyboardButton(
+                text="⬅️ " + _("prev_page_button", default="Prev"),
+                callback_data=f"admin_ads:page:{current_page - 1}",
+            )
+        )
+    row.append(
+        InlineKeyboardButton(
+            text=f"{current_page + 1}/{total_pages}",
+            callback_data="ads_page_display",
+        )
+    )
+    if current_page < total_pages - 1:
+        row.append(
+            InlineKeyboardButton(
+                text=_("next_page_button", default="Next") + " ➡️",
+                callback_data=f"admin_ads:page:{current_page + 1}",
+            )
+        )
+    if row:
+        builder.row(*row)
+
+    builder.button(text=_(key="admin_ads_create_button", default="➕ Создать кампанию"),
+                   callback_data="admin_action:ads_create")
+    builder.button(text=_(key="back_to_admin_panel_button"),
+                   callback_data="admin_action:main")
+    builder.adjust(1)
+    return builder.as_markup()
+
+
+def get_ad_card_keyboard(i18n_instance, lang: str, campaign_id: int, back_page: int) -> InlineKeyboardMarkup:
+    _ = lambda key, **kwargs: i18n_instance.gettext(lang, key, **kwargs)
+    builder = InlineKeyboardBuilder()
+    builder.button(text=_(key="back_to_ads_list_button", default="⬅️ К списку"),
+                   callback_data=f"admin_ads:page:{back_page}")
+    builder.button(text=_(key="back_to_admin_panel_button"),
+                   callback_data="admin_action:main")
+    builder.adjust(1)
+    return builder.as_markup()
+
+
 def get_logs_menu_keyboard(i18n_instance, lang: str) -> InlineKeyboardMarkup:
     _ = lambda key, **kwargs: i18n_instance.gettext(lang, key, **kwargs)
     builder = InlineKeyboardBuilder()