stealergram/tui/app.md

tui/app.py

Textual TUI frontend. Entry point: run_tui().

Entry point

from tui.app import run_tui
run_tui()   # called by main.py

---

Screen hierarchy

MonitorApp (App)
├── [default screen]
│   ├── Header
│   ├── #top-row (Horizontal)
│   │   ├── DownloadPanel  #dl-panel
│   │   └── HitsPanel      #hits-panel
│   ├── StatsPanel         #stats-panel
│   ├── ChannelPanel       #ch-panel
│   └── Footer
├── SearchScreen     (push/pop via 's')
├── HitsDBScreen     (push/pop via 'h')
└── KeywordsScreen   (push/pop via 'k')

---

MonitorApp

Threading model

• Bot backend → threading.Thread(daemon=True) with its own asyncio.new_event_loop()
  Runs _bot_main() — Telethon is completely isolated from Textual's loop.
• TUI drain → set_interval(0.1, _drain_bus) — polls queue.Queue every 100ms on Textual's loop.

Key methods

Method	Description
on_mount()	Calls bus.init_bus(), starts bot thread, sets drain interval
_drain_bus()	Drains all pending events from queue.Queue, dispatches to widgets
_run_bot_thread()	Thread entry: creates event loop, runs _bot_main()
_bot_main()	Async bot backend: connect, auth, backfill, live handler loop
_signal_channel_changed()	Thread-safely sets the bot loop's asyncio.Event via call_soon_threadsafe

Keybindings

Key	Action
s	Push SearchScreen
h	Push HitsDBScreen
k	Push KeywordsScreen
c	Clear download + hits logs
r	Force-refresh stats bar
q / ctrl+c	Quit

---

Widgets

DownloadPanel

Left panel. Two RichLog widgets separated by a dashed line:

• top (#tdl-out): raw tdl output lines (ANSI stripped)
• bottom (#dl-log): structured download status entries

Methods: tdl_line(line), queued(filename, size_mb, source, password), status(filename, state, via), clear_logs()

States for status(): queued · downloading · done_tdl · done_tel · failed

HitsPanel

Right panel. Single RichLog with color-coded hit entries.
Reactive hit_count updates the panel title badge automatically.

Methods: add_hit(severity, raw, source, filename, reasons), clear_log()

StatsPanel

Slim horizontal bar. Polls utils.database.stats() every 10s via set_interval.
Also refreshed immediately on each EvHit event.

ChannelPanel

Bottom panel. ListView + Input + buttons.
Add/remove posts EvChannelAdded / EvChannelRemoved onto the bus.
Changes apply immediately (handler re-registered). Not persisted to config.py automatically.

---

Screens

SearchScreen (s)

• Text input → queries utils.database.search(keyword)
• Results in a DataTable with columns: Sev, Time, URL, Username, Password, Source, File
• Submit with ↵ or Search button; Escape to dismiss

HitsDBScreen (h)

• Toolbar buttons + number keys filter by severity
• r → recent 50, 1→CRITICAL, 2→HIGH, 3→MEDIUM, 4→LOW
• Calls utils.database.recent() / by_severity()

KeywordsScreen (k)

• Live-edit config.TARGET_KEYWORDS
• Validates regex before adding
• On change: rebuilds utils.scorer.EMPLOYEE_DOMAINS and ORG_DOMAINS
• Bot handler recompiles patterns on the next incoming message automatically
• Changes are in-memory only — copy to config.py to persist

---

Bot auth flow (_bot_main)

await bot_client.connect()
await bot_client.is_user_authorized()? → sign_in(bot_token=...)
await user_client.connect()
await user_client.is_user_authorized()? → log error + return (must run --no-tui first)
warm_entity_cache()
_make_handler(channels)       ← registers NewMessage handler
backfill_all()
run_until_disconnected()  ┐
_watch_channels()         ┘  gathered

Channel-change signal path:

ChannelPanel button → EvChannel* on bus → _drain_bus → _signal_channel_changed()
  → call_soon_threadsafe(asyncio.Event.set) → _watch_channels() wakes → _make_handler()