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import os
import re
import subprocess


def get_font_family(font_path):

    try:

        result = subprocess.run(
            ["fc-scan", font_path],
            capture_output=True,
            text=True
        )

        match = re.search(
            r'family:\s+"([^"]+)"',
            result.stdout
        )

        if match:
            return match.group(1)

    except Exception as e:

        print(e)

    return None


def build_font_map(font_dir="fonts"):

    font_map = {}

    if not os.path.exists(font_dir):
        return font_map

    for filename in os.listdir(font_dir):

        if not (
            filename.endswith(".ttf")
            or filename.endswith(".otf")
        ):
            continue

        path = os.path.join(
            font_dir,
            filename
        )

        family = get_font_family(path)

        if family:

            key = (
                filename
                .replace(".ttf", "")
                .replace(".otf", "")
            )

            font_map[key] = family

    print("\nFONT MAP:")
    print(font_map)

    return font_map