05/23 Phase 3

main.py

@@ -16,6 +16,7 @@ from apscheduler.schedulers.background import BackgroundScheduler
 from db.database import init_db
 from core.fetcher import fetch_all
 from ui.statusbar import StatusBar
+from ui.history import HistoryScreen
 
 logging.basicConfig(
     level=logging.INFO,
@@ -38,10 +39,13 @@ class LottoSightApp(tk.Tk):
 
         self._fetch_lock = threading.Lock()
         self._scheduler: BackgroundScheduler | None = None
+        self._current_screen: tk.Widget | None = None
+        self._screens: dict[str, tk.Widget] = {}
 
         self._build_ui()
         self._start_scheduler()
-        self._launch_fetch()  # auto-fetch on startup
+        self._navigate("History")   # open History as default for now
+        self._launch_fetch()        # auto-fetch on startup
 
     # ── UI construction ───────────────────────────────────────────────────────
 
@@ -65,15 +69,10 @@ class LottoSightApp(tk.Tk):
         )
         self._fetch_btn.pack(side="right", padx=4)
 
-        # Content area — replaced by real screens in later phases
-        self._content = ttk.Frame(self, padding=16)
+        # Content area — screens are packed/unpacked inside here
+        self._content = ttk.Frame(self)
         self._content.pack(side="top", fill="both", expand=True)
 
-        self._content_label = ttk.Label(
-            self._content, text="Dashboard", font=("TkDefaultFont", 14)
-        )
-        self._content_label.pack(expand=True)
-
         # Status bar
         self._statusbar = StatusBar(self)
         self._statusbar.pack(side="bottom", fill="x")
@@ -82,7 +81,29 @@ class LottoSightApp(tk.Tk):
 
     def _navigate(self, screen_name: str):
         logger.info("Navigate → %s", screen_name)
-        self._content_label.config(text=screen_name)
+
+        if self._current_screen is not None:
+            self._current_screen.pack_forget()
+
+        if screen_name not in self._screens:
+            self._screens[screen_name] = self._make_screen(screen_name)
+
+        self._current_screen = self._screens[screen_name]
+        self._current_screen.pack(fill="both", expand=True)
+
+        # Refresh data-bearing screens each time they're shown
+        if hasattr(self._current_screen, "refresh"):
+            self._current_screen.refresh()
+
+    def _make_screen(self, name: str) -> tk.Widget:
+        if name == "History":
+            return HistoryScreen(self._content)
+        # Placeholder for screens added in later phases
+        placeholder = ttk.Label(
+            self._content, text=f"{name} — coming soon",
+            font=("TkDefaultFont", 14), anchor="center",
+        )
+        return placeholder
 
     # ── Fetch wiring ──────────────────────────────────────────────────────────
 
@@ -126,6 +147,9 @@ class LottoSightApp(tk.Tk):
     def _on_fetch_done(self, results: list):
         self._fetch_btn.config(state="normal", text="Fetch Now")
         self._statusbar.update_fetch_results(results)
+        # Refresh the current screen if it can show new data
+        if self._current_screen and hasattr(self._current_screen, "refresh"):
+            self._current_screen.refresh()
 
     # ── Lifecycle ─────────────────────────────────────────────────────────────