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#!/usr/bin/env python3
"""Plot stable Polish DynaWord corpus growth across released versions."""

from pathlib import Path

import matplotlib.pyplot as plt
from matplotlib.ticker import FuncFormatter


ROOT = Path(__file__).resolve().parent.parent
OUTPUT = ROOT / "artifacts" / "dataset_size_by_version.png"

VERSIONS = ["v0.2.0", "v0.2.1", "v0.2.2", "v0.2.3", "v0.2.4", "v0.2.5"]
DOCUMENTS = [
    2_490_773,
    2_491_773,
    2_579_963,
    2_710_974,
    4_246_429,
    4_319_200,
]
TOKENS = [
    6_221_393_871,
    6_281_911_234,
    6_362_577_363,
    6_881_277_362,
    9_597_908_067,
    9_639_062_573,
]


def millions(value, _position):
    return f"{value / 1_000_000:.1f}M"


def billions(value, _position):
    return f"{value / 1_000_000_000:.1f}B"


def main():
    plt.style.use("seaborn-v0_8-whitegrid")
    fig, axes = plt.subplots(1, 2, figsize=(12, 4.8))

    panels = [
        (axes[0], DOCUMENTS, "Documents", millions, lambda v: f"{v / 1_000_000:.3f}M", "#2563eb"),
        (axes[1], TOKENS, "Tokens (cl100k proxy)", billions, lambda v: f"{v / 1_000_000_000:.3f}B", "#0f766e"),
    ]

    for axis, values, ylabel, formatter, labeler, color in panels:
        axis.plot(VERSIONS, values, marker="o", linewidth=2.5, color=color)
        axis.fill_between(VERSIONS, values, alpha=0.12, color=color)
        axis.set_ylabel(ylabel)
        axis.yaxis.set_major_formatter(FuncFormatter(formatter))
        axis.spines[["top", "right"]].set_visible(False)
        axis.grid(axis="x", visible=False)
        padding = (max(values) - min(values)) * 0.3 or max(values) * 0.02
        axis.set_ylim(min(values) - padding, max(values) + padding)

        for version, value in zip(VERSIONS, values):
            axis.annotate(
                labeler(value),
                (version, value),
                xytext=(0, 9),
                textcoords="offset points",
                ha="center",
                fontsize=9,
                fontweight="bold",
                color=color,
            )

    fig.suptitle("Polish DynaWord — stable dataset growth by version", fontsize=15)
    fig.tight_layout()
    OUTPUT.parent.mkdir(parents=True, exist_ok=True)
    fig.savefig(OUTPUT, dpi=180, bbox_inches="tight")
    plt.close(fig)
    print(OUTPUT)


if __name__ == "__main__":
    main()