"""Main-window layout and typed section views, without acquisition state."""

from pathlib import Path

from PyQt6.QtWidgets import (
    QFileDialog, QFrame, QHBoxLayout, QLabel, QMainWindow, QPushButton,
    QScrollArea, QVBoxLayout, QWidget,
)

from python_app.gui.controllers.history_controller import HistoryController
from python_app.gui.controllers.sections.data_actions_section import build_data_actions_group
from python_app.gui.controllers.sections.preprocess_summary_section import build_preprocess_summary_group
from python_app.gui.controllers.sections.primary_actions_section import build_primary_actions_group
from python_app.gui.controllers.sections.processing_section import build_processing_group
from python_app.gui.controllers.sections.radar_section import build_radar_group
from python_app.gui.controllers.sections.switch_section import build_switch_group
from python_app.models.gui_profile_schema import GuiStateModel
from python_app.models.run_config_schema import RunConfigModel


class WindowView:
    def __init__(self, parent: QMainWindow, config: RunConfigModel, gui: GuiStateModel,
                 plot_stack: QWidget, log_panel: QWidget, *, project_root: Path) -> None:
        self._parent = parent
        self.root = QWidget(parent)
        parent.setCentralWidget(self.root)
        parent.setWindowTitle("Radar System Control")
        layout = QHBoxLayout(self.root)
        layout.setContentsMargins(12, 12, 12, 12)
        layout.setSpacing(14)
        layout.addWidget(plot_stack, stretch=11)
        self._toggle = QPushButton(">")
        self._toggle.setObjectName("settingsToggleButton")
        self._toggle.setFixedWidth(26)
        self._toggle.setToolTip("Hide settings panel")
        self._toggle.clicked.connect(self.toggle_settings)
        layout.addWidget(self._toggle)
        self.settings_panel = QWidget(self.root)
        self.settings_panel.setMinimumWidth(610)
        settings_layout = QVBoxLayout(self.settings_panel)
        settings_layout.setContentsMargins(0, 0, 0, 0)
        settings_layout.setSpacing(10)
        self.primary = build_primary_actions_group()
        settings_layout.addWidget(self.primary.group)
        self.data = build_data_actions_group(gui)
        self.switches = build_switch_group(config, gui)
        self.preprocess = build_preprocess_summary_group()
        self.processing = build_processing_group(config, gui)
        self.radar = build_radar_group(config)
        self.data.browse.clicked.connect(lambda: self.browse_save_path(project_root))
        self.sections = (self.data, self.switches, self.preprocess, self.processing, self.radar)
        controls = QWidget()
        controls_layout = QVBoxLayout(controls)
        controls_layout.setContentsMargins(0, 0, 12, 0)
        controls_layout.setSpacing(10)
        for section in self.sections:
            controls_layout.addWidget(section.group)
        controls_layout.addStretch(1)
        scroll = QScrollArea(self.settings_panel)
        scroll.setWidgetResizable(True)
        scroll.setFrameShape(QFrame.Shape.NoFrame)
        scroll.setWidget(controls)
        settings_layout.addWidget(scroll, stretch=1)
        self.status = QLabel("Status: idle")
        self.status.setObjectName("statusLabel")
        self._history = QLabel("History: raw=0, preprocessed=0, results=0")
        self._history.setObjectName("hintLabel")
        settings_layout.addWidget(self.status)
        settings_layout.addWidget(self._history)
        settings_layout.addWidget(log_panel)
        layout.addWidget(self.settings_panel, stretch=7)
        parent.resize(1650, 940)

    def toggle_settings(self) -> None:
        visible = self.settings_panel.isHidden()
        self.settings_panel.setVisible(visible)
        self._toggle.setText(">" if visible else "<")
        self._toggle.setToolTip("Hide settings panel" if visible else "Show settings panel")

    def update_history(self, history: HistoryController) -> None:
        self._history.setText(f"History: raw={len(history.raw)}, preprocessed={len(history.preprocessed)}, "
                              f"results={len(history.results)}")

    def update_preprocess(self, selected: dict[str, str]) -> None:
        for key, label in self.preprocess.labels.items():
            label.setText(selected.get(key, "") or "<not selected>")

    def browse_save_path(self, project_root: Path) -> None:
        field = self.data.save_path
        selected = QFileDialog.getExistingDirectory(self._parent, "Select Snapshot Directory",
                                                    field.text().strip() or str(project_root))
        if selected:
            field.setText(selected)