feat: add access control to channels with various modes

- Introduced AccessMode enum to define channel access levels: Public, PasswordProtected, AccountRequired, and OwnerOnly.
- Updated Channel and ProgrammingBlock entities to include access_mode and access_password_hash fields.
- Enhanced create and update channel functionality to handle access mode and password.
- Implemented access checks in channel routes based on the defined access modes.
- Modified frontend components to support channel creation and editing with access control options.
- Added ChannelPasswordModal for handling password input when accessing restricted channels.
- Updated API calls to include channel and block passwords as needed.
- Created database migrations to add access_mode and access_password_hash columns to channels table.

k-tv-frontend/lib/api.ts

@@ -152,24 +152,31 @@ export const api = {
     getActive: (channelId: string, token: string) =>
       request<ScheduleResponse>(`/channels/${channelId}/schedule`, { token }),
 
-    getCurrentBroadcast: (channelId: string, token: string) =>
-      request<CurrentBroadcastResponse | null>(`/channels/${channelId}/now`, {
+    getCurrentBroadcast: (channelId: string, token: string, channelPassword?: string) => {
+      const headers: Record<string, string> = {};
+      if (channelPassword) headers["X-Channel-Password"] = channelPassword;
+      return request<CurrentBroadcastResponse | null>(`/channels/${channelId}/now`, {
         token,
-      }),
+        headers,
+      });
+    },
 
     getEpg: (
       channelId: string,
       token: string,
       from?: string,
       until?: string,
+      channelPassword?: string,
     ) => {
       const params = new URLSearchParams();
       if (from) params.set("from", from);
       if (until) params.set("until", until);
       const qs = params.toString();
+      const headers: Record<string, string> = {};
+      if (channelPassword) headers["X-Channel-Password"] = channelPassword;
       return request<ScheduledSlotResponse[]>(
         `/channels/${channelId}/epg${qs ? `?${qs}` : ""}`,
-        { token },
+        { token, headers },
       );
     },
   },