from pathlib import Path

import matplotlib.pyplot as plt

response_hours = [
    4,
    5,
    5,
    6,
    7,
    7,
    8,
    9,
    9,
    9,
    10,
    11,
    12,
    12,
    13,
    14,
    15,
    16,
    18,
    20,
    22,
    25,
    28,
    31,
]
bin_edges = [0, 5, 10, 15, 20, 25, 30, 35]

fig, ax = plt.subplots(figsize=(7, 4.5), layout="constrained")
counts, edges, patches = ax.hist(
    response_hours,
    bins=bin_edges,
    color="tab:blue",
    edgecolor="white",
)
ax.set_title("Support ticket response times")
ax.set_xlabel("Hours to first response")
ax.set_ylabel("Ticket count")
ax.set_xticks(bin_edges)
ax.grid(axis="y", linestyle=":", alpha=0.5)

output = Path("ticket-response-histogram.png")
fig.savefig(output, dpi=160)
plt.close(fig)

print(f"bins: {len(edges) - 1}")
print(f"counts: {[int(count) for count in counts]}")
print(f"x label: {ax.get_xlabel()}")
print(f"y label: {ax.get_ylabel()}")
print(f"saved: {output}")
print(f"bytes: {output.stat().st_size}")