from pathlib import Path
from typing import List
import matplotlib.pyplot as plt  # TODO
from datetime import datetime

from langfingaz import loadData
from langfingaz import parseMeetings
from langfingaz.parseMeetings import BbbStatus, Meeting
from langfingaz.util import fileUtil


def plotMeetings(folder: Path):
    bbbStati: List[BbbStatus] = []

    for file in folder.iterdir():
        if file.name.endswith(".xml"):
            dataStr, t = loadData.loadData(file)
            meetings: List[Meeting] = parseMeetings.parseMeetingsData(dataStr)
            bbbStati.append(parseMeetings.BbbStatus(meetings, t))

    doPlotMeetings(bbbStati)


def doPlotMeetings(bbbStati: List[BbbStatus]):
    time = [] # x-axis: time
    participants = [] # yAxis (1)
    videos = [] # yAxis (2)
    voices = [] # yAxis (3)

    for bbbStatus in bbbStati:
        time.append(bbbStatus.pointOfTime)
        participants.append(bbbStatus.participantCount)
        videos.append(bbbStatus.videoCount)
        voices.append(bbbStatus.voiceParticipantCount)


    # Note that even in the OO-style, we use `.pyplot.figure` to create the figure.
    fig, ax = plt.subplots()  # Create a figure and an axes.
    ax.plot(time, participants, label='participants')  # Plot some data on the axes.
    ax.plot(time, videos, label='video')  # Plot more data on the axes...
    ax.plot(time, voices, label='voice')  # ... and some more.
    ax.set_xlabel('time')  # Add an x-label to the axes.
    ax.set_ylabel('numbers')  # Add a y-label to the axes.
    ax.set_title("BigBlueButton Statistics")  # Add a title to the axes.
    ax.legend()  # Add a legend.

    fig.savefig(fileUtil.setDatetimePrefix(fileUtil.getProjectBaseDir().joinpath("plot"), datetime.now()))
    plt.show()


if __name__ == '__main__':
    plotMeetings(fileUtil.getProjectBaseDir().joinpath("data"))