import io

from matplotlib.figure import Figure
from matplotlib.patches import Arc, Rectangle
from matplotlib.backends.backend_agg import FigureCanvasAgg as FigureCanvas

graph_path = "/tmp/foobar.png"

PITCH_WIDTH = 65
PITCH_LENGTH = 105
PITCH_SCALE = 8

# Create example pitch graph
fig = Figure(figsize=(PITCH_WIDTH / PITCH_SCALE, PITCH_LENGTH / PITCH_SCALE))
ax = fig.subplots()
ax.set_facecolor("#1e1e1e")

ax.set_xlim(0, PITCH_WIDTH)
ax.set_ylim(0, PITCH_LENGTH)

pitch_borders = Rectangle(
    (0, 0),
    width=PITCH_WIDTH,
    height=PITCH_LENGTH,
    color="#ffffff",
    fill=False,
    lw=2,
    zorder=10,
)
ax.add_patch(pitch_borders)

halfway_line = Rectangle(
    (0, PITCH_LENGTH / 2),
    width=PITCH_WIDTH,
    height=0,
    color="#ffffff",
    fill=False,
    lw=2,
    zorder=0,
)
ax.add_patch(halfway_line)

centre_circle = Arc(
    (PITCH_WIDTH / 2, PITCH_LENGTH / 2),
    width=18,
    height=18,
    color="#ffffff",
    theta1=0,
    theta2=360,
    lw=2,
    zorder=0,
)
ax.add_patch(centre_circle)

ax.get_xaxis().set_visible(False)
ax.get_yaxis().set_visible(False)

# Export it to bytes buffer
buffer = io.BytesIO()
canvas = FigureCanvas(fig)
canvas.print_figure(buffer, dpi=150, bbox_inches="tight", pad_inches=0)
buffer.seek(0)

# Save buffer to a file
with open(graph_path, "wb") as f:
    f.write(buffer.getvalue())