"""
Validation tab for the microscopy object detection application.
"""

from PySide6.QtWidgets import QWidget, QVBoxLayout, QLabel, QGroupBox

from src.database.db_manager import DatabaseManager
from src.utils.config_manager import ConfigManager


class ValidationTab(QWidget):
    """Validation tab placeholder."""

    def __init__(
        self, db_manager: DatabaseManager, config_manager: ConfigManager, parent=None
    ):
        super().__init__(parent)
        self.db_manager = db_manager
        self.config_manager = config_manager

        self._setup_ui()

    def _setup_ui(self):
        """Setup user interface."""
        layout = QVBoxLayout()

        group = QGroupBox("Validation")
        group_layout = QVBoxLayout()
        label = QLabel(
            "Validation functionality will be implemented here.\n\n"
            "Features:\n"
            "- Model validation\n"
            "- Metrics visualization\n"
            "- Confusion matrix\n"
            "- Precision-Recall curves"
        )
        group_layout.addWidget(label)
        group.setLayout(group_layout)

        layout.addWidget(group)
        layout.addStretch()
        self.setLayout(layout)

    def refresh(self):
        """Refresh the tab."""
        pass