#!/usr/bin/env python
import os
import json

from fontTools import subset, ttLib

BASE_PATH = os.path.dirname(__file__)
CLASSES = json.load(open(f"{BASE_PATH}/src/classes.json"))
CLASSES = [c[3:] for c in CLASSES]

class OPTIONS:
    flavor = "woff2"
    with_zopfli = True
    harfbuzz_repacker = True
    canonical_order = False


print("loading font")
font = ttLib.TTFont(
    f"{BASE_PATH}/src/bootstrap-icons.woff2",
    flavor="woff2",
    lazy=False,
    recalcBBoxes=False,
)

print("subsetting used glyphs")
subsetter = subset.Subsetter()
subsetter.populate(glyphs=CLASSES)
subsetter.subset(font)

print("saving minimal fonts")
subset.save_font(
    font, f"{os.environ['ROOT']}/src/static/icons/bsi.min.woff2", options=OPTIONS
)