"""Builder for processing mode and live-parameter section."""

from __future__ import annotations

from PyQt6.QtWidgets import (
    QCheckBox,
    QComboBox,
    QDoubleSpinBox,
    QFormLayout,
    QGroupBox,
    QLineEdit,
    QPlainTextEdit,
    QSizePolicy,
    QSpinBox,
    QStackedWidget,
    QWidget,
)

def _format_tx_geometry(owner) -> str:
    """Render Tx geometry defaults into editable line-based text."""
    return "\n".join(
        f"{int(entry.output_pos)} {float(entry.x_m):g}"
        for entry in owner._defaults_config.gpr.tx_geometry
    )


def _format_rx_geometry(owner) -> str:
    """Render Rx geometry defaults into editable line-based text."""
    return "\n".join(
        f"{int(entry.input_pos)} {float(entry.x_m):g}"
        for entry in owner._defaults_config.gpr.rx_geometry
    )


def build_processing_group(owner) -> QGroupBox:
    """Create processing mode section with pass-through, B-scan, and GPR pages."""
    group = QGroupBox("Processing")
    form = QFormLayout(group)
    form.setFieldGrowthPolicy(QFormLayout.FieldGrowthPolicy.AllNonFixedFieldsGrow)
    processing_defaults = owner._gui_defaults.processing
    pass_defaults = processing_defaults.pass_through
    bscan_defaults = processing_defaults.bscan
    gpr_live_defaults = processing_defaults.gpr

    owner._processing_mode = QComboBox()
    owner._processing_mode.addItems(["pass_through", "bscan", "gpr"])
    owner._set_combo_current_text(owner._processing_mode, processing_defaults.selected_mode)

    owner._processing_mode_pages = QStackedWidget(group)
    owner._processing_mode_pages.setSizePolicy(QSizePolicy.Policy.Preferred, QSizePolicy.Policy.Fixed)

    pass_through_page = QWidget(owner._processing_mode_pages)
    pass_through_page.setSizePolicy(QSizePolicy.Policy.Preferred, QSizePolicy.Policy.Fixed)
    pass_through_form = QFormLayout(pass_through_page)
    pass_through_form.setFieldGrowthPolicy(QFormLayout.FieldGrowthPolicy.AllNonFixedFieldsGrow)

    owner._show_magnitude_checkbox = QCheckBox("Show magnitude")
    owner._show_magnitude_checkbox.setChecked(bool(pass_defaults.show_magnitude))

    owner._show_phase_checkbox = QCheckBox("Show phase")
    owner._show_phase_checkbox.setChecked(bool(pass_defaults.show_phase))

    owner._pass_through_fixed_y_enabled = QCheckBox("Fix magnitude Y range")
    owner._pass_through_fixed_y_enabled.setChecked(bool(pass_defaults.fixed_y_enabled))

    owner._pass_through_y_min_db = QDoubleSpinBox()
    owner._pass_through_y_min_db.setDecimals(1)
    owner._pass_through_y_min_db.setRange(-240.0, 240.0)
    owner._pass_through_y_min_db.setSingleStep(1.0)
    owner._pass_through_y_min_db.setValue(float(pass_defaults.y_min_db))

    owner._pass_through_y_max_db = QDoubleSpinBox()
    owner._pass_through_y_max_db.setDecimals(1)
    owner._pass_through_y_max_db.setRange(-240.0, 240.0)
    owner._pass_through_y_max_db.setSingleStep(1.0)
    owner._pass_through_y_max_db.setValue(float(pass_defaults.y_max_db))

    owner._sync_pass_through_y_controls()

    pass_through_form.addRow(owner._show_magnitude_checkbox)
    pass_through_form.addRow(owner._show_phase_checkbox)
    pass_through_form.addRow(owner._pass_through_fixed_y_enabled)
    pass_through_form.addRow("Y min dB", owner._pass_through_y_min_db)
    pass_through_form.addRow("Y max dB", owner._pass_through_y_max_db)
    owner._processing_mode_pages.addWidget(pass_through_page)

    bscan_page = QWidget(owner._processing_mode_pages)
    bscan_page.setSizePolicy(QSizePolicy.Policy.Preferred, QSizePolicy.Policy.Fixed)
    bscan_form = QFormLayout(bscan_page)
    bscan_form.setFieldGrowthPolicy(QFormLayout.FieldGrowthPolicy.AllNonFixedFieldsGrow)

    owner._bscan_axis = QComboBox()
    owner._bscan_axis.addItems(["abs", "real", "phase"])
    owner._set_combo_current_text(owner._bscan_axis, bscan_defaults.axis)

    owner._bscan_cut_m = QDoubleSpinBox()
    owner._bscan_cut_m.setDecimals(3)
    owner._bscan_cut_m.setRange(0.0, 2.0)
    owner._bscan_cut_m.setSingleStep(0.001)
    owner._bscan_cut_m.setValue(float(bscan_defaults.cut_m))

    owner._bscan_max_depth_m = QDoubleSpinBox()
    owner._bscan_max_depth_m.setDecimals(1)
    owner._bscan_max_depth_m.setRange(0.1, 20.0)
    owner._bscan_max_depth_m.setSingleStep(0.1)
    owner._bscan_max_depth_m.setValue(float(bscan_defaults.max_depth_m))

    owner._bscan_gain = QDoubleSpinBox()
    owner._bscan_gain.setDecimals(1)
    owner._bscan_gain.setRange(0.0, 3.0)
    owner._bscan_gain.setSingleStep(0.1)
    owner._bscan_gain.setValue(float(bscan_defaults.gain))

    owner._bscan_start_freq_mhz = QDoubleSpinBox()
    owner._bscan_start_freq_mhz.setDecimals(1)
    owner._bscan_start_freq_mhz.setRange(100.0, 8800.0)
    owner._bscan_start_freq_mhz.setSingleStep(10.0)
    owner._bscan_start_freq_mhz.setValue(float(bscan_defaults.start_freq_mhz))

    owner._bscan_stop_freq_mhz = QDoubleSpinBox()
    owner._bscan_stop_freq_mhz.setDecimals(1)
    owner._bscan_stop_freq_mhz.setRange(100.0, 8800.0)
    owner._bscan_stop_freq_mhz.setSingleStep(10.0)
    owner._bscan_stop_freq_mhz.setValue(float(bscan_defaults.stop_freq_mhz))

    bscan_form.addRow("Axis", owner._bscan_axis)
    bscan_form.addRow("Cut m", owner._bscan_cut_m)
    bscan_form.addRow("Max depth m", owner._bscan_max_depth_m)
    bscan_form.addRow("Gain", owner._bscan_gain)
    bscan_form.addRow("Start MHz", owner._bscan_start_freq_mhz)
    bscan_form.addRow("Stop MHz", owner._bscan_stop_freq_mhz)
    owner._processing_mode_pages.addWidget(bscan_page)

    gpr_page = QWidget(owner._processing_mode_pages)
    gpr_page.setSizePolicy(QSizePolicy.Policy.Preferred, QSizePolicy.Policy.Fixed)
    gpr_form = QFormLayout(gpr_page)
    gpr_form.setFieldGrowthPolicy(QFormLayout.FieldGrowthPolicy.AllNonFixedFieldsGrow)
    gpr_defaults = owner._defaults_config.gpr

    owner._gpr_config_mode = QComboBox()
    owner._gpr_config_mode.addItems(["point", "extended"])
    owner._set_combo_current_text(owner._gpr_config_mode, gpr_defaults.mode)

    owner._gpr_relative_permittivity = QDoubleSpinBox()
    owner._gpr_relative_permittivity.setDecimals(4)
    owner._gpr_relative_permittivity.setRange(0.0001, 1000.0)
    owner._gpr_relative_permittivity.setSingleStep(0.05)
    owner._gpr_relative_permittivity.setValue(float(gpr_defaults.relative_permittivity))

    owner._gpr_tx_geometry_input = QPlainTextEdit(_format_tx_geometry(owner))
    owner._gpr_tx_geometry_input.setPlaceholderText("output_pos x_m")
    owner._gpr_tx_geometry_input.setMinimumHeight(88)

    owner._gpr_rx_geometry_input = QPlainTextEdit(_format_rx_geometry(owner))
    owner._gpr_rx_geometry_input.setPlaceholderText("input_pos x_m")
    owner._gpr_rx_geometry_input.setMinimumHeight(120)

    owner._gpr_input_positions_input = QLineEdit(str(gpr_live_defaults.input_positions))
    owner._gpr_input_positions_input.setPlaceholderText("0,1,2")

    owner._gpr_output_positions_input = QLineEdit(str(gpr_live_defaults.output_positions))
    owner._gpr_output_positions_input.setPlaceholderText("0,1")

    owner._gpr_min_depth_m = QDoubleSpinBox()
    owner._gpr_min_depth_m.setDecimals(2)
    owner._gpr_min_depth_m.setRange(0.0, 50.0)
    owner._gpr_min_depth_m.setSingleStep(0.1)
    owner._gpr_min_depth_m.setValue(float(gpr_live_defaults.min_depth_m))

    owner._gpr_max_depth_m = QDoubleSpinBox()
    owner._gpr_max_depth_m.setDecimals(2)
    owner._gpr_max_depth_m.setRange(0.1, 50.0)
    owner._gpr_max_depth_m.setSingleStep(0.1)
    owner._gpr_max_depth_m.setValue(float(gpr_live_defaults.max_depth_m))

    owner._gpr_comp_power = QDoubleSpinBox()
    owner._gpr_comp_power.setDecimals(3)
    owner._gpr_comp_power.setRange(0.0, 5.0)
    owner._gpr_comp_power.setSingleStep(0.05)
    owner._gpr_comp_power.setValue(float(gpr_live_defaults.comp_power))

    owner._gpr_start_freq_mhz = QDoubleSpinBox()
    owner._gpr_start_freq_mhz.setDecimals(1)
    owner._gpr_start_freq_mhz.setRange(100.0, 8800.0)
    owner._gpr_start_freq_mhz.setSingleStep(10.0)
    owner._gpr_start_freq_mhz.setValue(float(gpr_live_defaults.start_freq_mhz))

    owner._gpr_stop_freq_mhz = QDoubleSpinBox()
    owner._gpr_stop_freq_mhz.setDecimals(1)
    owner._gpr_stop_freq_mhz.setRange(100.0, 8800.0)
    owner._gpr_stop_freq_mhz.setSingleStep(10.0)
    owner._gpr_stop_freq_mhz.setValue(float(gpr_live_defaults.stop_freq_mhz))

    owner._gpr_background_subtract_enabled = QCheckBox("Subtract mean of previous collections")
    owner._gpr_background_subtract_enabled.setChecked(bool(gpr_live_defaults.background_subtract_enabled))

    owner._gpr_background_mean_count = QSpinBox()
    owner._gpr_background_mean_count.setRange(0, 10_000)
    owner._gpr_background_mean_count.setValue(int(gpr_live_defaults.background_mean_count))

    gpr_form.addRow("Config mode", owner._gpr_config_mode)
    gpr_form.addRow("Relative permittivity", owner._gpr_relative_permittivity)
    gpr_form.addRow("Tx geometry", owner._gpr_tx_geometry_input)
    gpr_form.addRow("Rx geometry", owner._gpr_rx_geometry_input)
    gpr_form.addRow("Input positions", owner._gpr_input_positions_input)
    gpr_form.addRow("Output positions", owner._gpr_output_positions_input)
    gpr_form.addRow("Min depth m", owner._gpr_min_depth_m)
    gpr_form.addRow("Max depth m", owner._gpr_max_depth_m)
    gpr_form.addRow("Comp power", owner._gpr_comp_power)
    gpr_form.addRow("Start MHz", owner._gpr_start_freq_mhz)
    gpr_form.addRow("Stop MHz", owner._gpr_stop_freq_mhz)
    gpr_form.addRow(owner._gpr_background_subtract_enabled)
    gpr_form.addRow("Mean count", owner._gpr_background_mean_count)
    owner._processing_mode_pages.addWidget(gpr_page)

    owner._processing_mode.currentTextChanged.connect(owner._on_processing_mode_changed)
    owner._show_magnitude_checkbox.toggled.connect(owner._on_trace_visibility_changed)
    owner._show_phase_checkbox.toggled.connect(owner._on_trace_visibility_changed)
    owner._pass_through_fixed_y_enabled.toggled.connect(owner._sync_pass_through_y_controls)
    owner._pass_through_fixed_y_enabled.toggled.connect(owner._on_processing_live_settings_changed)
    owner._pass_through_y_min_db.valueChanged.connect(owner._on_processing_live_settings_changed)
    owner._pass_through_y_max_db.valueChanged.connect(owner._on_processing_live_settings_changed)
    form.addRow("Mode", owner._processing_mode)
    form.addRow(owner._processing_mode_pages)

    owner._bscan_axis.currentTextChanged.connect(owner._on_processing_live_settings_changed)
    owner._bscan_cut_m.valueChanged.connect(owner._on_processing_live_settings_changed)
    owner._bscan_max_depth_m.valueChanged.connect(owner._on_processing_live_settings_changed)
    owner._bscan_gain.valueChanged.connect(owner._on_processing_live_settings_changed)
    owner._bscan_start_freq_mhz.valueChanged.connect(owner._on_processing_live_settings_changed)
    owner._bscan_stop_freq_mhz.valueChanged.connect(owner._on_processing_live_settings_changed)
    owner._gpr_input_positions_input.editingFinished.connect(owner._on_processing_live_settings_changed)
    owner._gpr_output_positions_input.editingFinished.connect(owner._on_processing_live_settings_changed)
    owner._gpr_min_depth_m.valueChanged.connect(owner._on_processing_live_settings_changed)
    owner._gpr_max_depth_m.valueChanged.connect(owner._on_processing_live_settings_changed)
    owner._gpr_comp_power.valueChanged.connect(owner._on_processing_live_settings_changed)
    owner._gpr_start_freq_mhz.valueChanged.connect(owner._on_processing_live_settings_changed)
    owner._gpr_stop_freq_mhz.valueChanged.connect(owner._on_processing_live_settings_changed)
    owner._gpr_background_subtract_enabled.toggled.connect(owner._on_processing_live_settings_changed)
    owner._gpr_background_mean_count.valueChanged.connect(owner._on_processing_live_settings_changed)

    owner._on_processing_mode_changed(owner._processing_mode.currentText())
    return group