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src/time_tracker/app.py

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+import json
+from pathlib import Path
+from typing import Optional
+from .models import TrackerConfig, TrackedTask
+from .utils import get_platform, ensure_dir
+from .ui.overlay import OverlayWindow
+
+
+class Application:
+    def __init__(self):
+        self.config_path = Path("config.json")
+        self.tasks_dir = Path("tasks")
+        self.config: TrackerConfig = self._load_or_create_config()
+        self.current_task: Optional[TrackedTask] = None
+        self.platform = get_platform()
+
+        # Загружаем текущую задачу, если указан ID
+        if self.config.current_task_id:
+            self.current_task = self._load_task(self.config.current_task_id)
+
+        # Создаём директорию для задач, если нужно
+        ensure_dir(self.tasks_dir)
+
+    def _load_or_create_config(self) -> TrackerConfig:
+        if self.config_path.exists():
+            with open(self.config_path, "r", encoding="utf-8") as f:
+                data = json.load(f)
+            return TrackerConfig.model_validate(data)
+        else:
+            config = TrackerConfig()
+            self._save_config(config)
+            return config
+
+    def _save_config(self, config: TrackerConfig) -> None:
+        with open(self.config_path, "w", encoding="utf-8") as f:
+            f.write(config.model_dump_json(indent=2))
+
+    def _load_task(self, task_id: str) -> Optional[TrackedTask]:
+        task_file = self.tasks_dir / f"{task_id}.json"
+        if task_file.exists():
+            try:
+                with open(task_file, "r", encoding="utf-8") as f:
+                    data = json.load(f)
+                return TrackedTask.model_validate(data)
+            except Exception:
+                return None
+        return None
+
+    def save_task(self, task: TrackedTask) -> None:
+        task_file = self.tasks_dir / f"{task.task_id}.json"
+        with open(task_file, "w", encoding="utf-8") as f:
+            f.write(task.model_dump_json(indent=2))
+
+    def run(self):
+        # Пока просто запускаем UI
+        # Позже сюда добавим трекинг в фоне
+        overlay = OverlayWindow()
+        overlay.run()