Remove unused chart functionality

common/plots.py

@@ -1,95 +0,0 @@
-import base64
-from datetime import datetime
-from io import BytesIO
-
-import matplotlib.pyplot as plt
-import matplotlib.dates as mdates
-import pandas as pd
-from django.db.models import F, IntegerField, QuerySet, Sum
-from django.db.models.functions import TruncDay
-from games.models import Session
-
-
-def key_value_to_value_value(data):
-    return {data["date"]: data["hours"]}
-
-
-def playtime_over_time_chart(queryset: QuerySet = Session.objects):
-    microsecond_in_second = 1000000
-    result = (
-        queryset.exclude(timestamp_end__exact=None)
-        .annotate(date=TruncDay("timestamp_start"))
-        .values("date")
-        .annotate(
-            hours=Sum(
-                F("duration_calculated"),
-                output_field=IntegerField(),
-            )
-        )
-        .values("date", "hours")
-    )
-    keys = []
-    values = []
-    running_total = int(0)
-    for item in result:
-        # date_value = datetime.strftime(item["date"], "%d-%m-%Y")
-        date_value = item["date"]
-        keys.append(date_value)
-        running_total += int(item["hours"] / (3600 * microsecond_in_second))
-        values.append(running_total)
-    data = [keys, values]
-    return get_chart(
-        data,
-        title="Playtime over time (manual excluded)",
-        xlabel="Date",
-        ylabel="Hours",
-    )
-
-
-def get_graph():
-    buffer = BytesIO()
-    plt.savefig(buffer, format="svg", transparent=True)
-    buffer.seek(0)
-    image_png = buffer.getvalue()
-    graph = base64.b64encode(image_png)
-    graph = graph.decode("utf-8")
-    buffer.close()
-    return graph
-
-
-def get_chart(data, title="", xlabel="", ylabel=""):
-    x = data[0]
-    y = data[1]
-    plt.style.use("dark_background")
-    plt.switch_backend("SVG")
-    fig, ax = plt.subplots()
-    fig.set_size_inches(10, 4)
-    lines = ax.plot(x, y, "-o")
-    first = x[0]
-    last = x[-1]
-    difference = last - first
-    if difference.days <= 14:
-        ax.xaxis.set_major_locator(mdates.DayLocator())
-    elif difference.days < 60 or len(x) < 60:
-        ax.xaxis.set_major_locator(mdates.WeekdayLocator())
-        ax.xaxis.set_minor_locator(mdates.DayLocator())
-    elif difference.days < 720:
-        ax.xaxis.set_major_locator(mdates.MonthLocator())
-        ax.xaxis.set_minor_locator(mdates.WeekdayLocator())
-        for line in lines:
-            line.set_marker("")
-    else:
-        for line in lines:
-            line.set_marker("")
-        ax.xaxis.set_major_locator(mdates.YearLocator())
-        ax.xaxis.set_minor_locator(mdates.MonthLocator())
-
-    ax.xaxis.set_major_formatter(mdates.DateFormatter("%Y-%m-%d"))
-    for label in ax.get_xticklabels(which="major"):
-        label.set(rotation=30, horizontalalignment="right")
-    ax.set_xlabel(xlabel)
-    ax.set_ylabel(ylabel)
-    ax.set_title(title)
-    fig.tight_layout()
-    chart = get_graph()
-    return chart