import pandas as pd
from PyQt5.QtWidgets import QWidget, QVBoxLayout
import pyqtgraph as pg

from base.base import BasePlotWidget


class PlotWidget(BasePlotWidget):

    def _create_widget(self, dataframe: pd.DataFrame) -> QWidget:
        widget = QWidget()
        layout = QVBoxLayout()

        time_axis = dataframe["time"]

        for channel, signals in self._plot_channels.items():
            plot_widget = pg.PlotWidget(title=channel)
            plot_widget.showGrid(x=True, y=True)
            legend = pg.LegendItem((80, 60), offset=(70, 20))
            legend.setParentItem(plot_widget.graphicsItem())

            for signal in signals:
                plot = plot_widget.plot(time_axis, dataframe[signal["name"]], pen=signal["pen"])
                legend.addItem(plot, signal["name"])

            layout.addWidget(plot_widget)

        widget.setLayout(layout)
        return widget

    def build(self, data: list[pd.DataFrame]) -> None:
        widgets = [self._create_widget(data_sample) for data_sample in data]
        self._mediator.notify(self, widgets)