#!/usr/bin/env python3

import requests
import json
import re
import sys

in_data = requests.get("https://github.com/mattermost/mattermost-webapp/raw/master/utils/emoji.json").json()
"""
{
	"name": "GRINNING FACE",
	"unified": "1F600",
	"short_name": "grinning",
	"short_names": [
		"grinning"
	],
	"text": ":D",
	"texts": null,
	"category": "smileys-emotion"
},
"""


def text_or_emoji(emoji_entry):
	if emoji_entry.get("text") and emoji_entry.get("short_name") != "blush":
		return emoji_entry["text"]
	elif emoji_entry.get("unified"):
		textual_unicode = emoji_entry["unified"]
		assert re.fullmatch("[0-9A-F]{4,5}(-[0-9A-F]{4,5})*", textual_unicode)
		return "".join(
			chr(int(c, base=16)) for c in textual_unicode.split("-")
		)
	else:
		return None


out_data = {
	short_name: text_or_emoji(emoji_entry)
	for emoji_entry in in_data
	for short_name in emoji_entry["short_names"]
}
out_data = {k: v for k, v in out_data.items() if v is not None}

out = json.dumps(out_data, ensure_ascii=False)
out = re.sub(", *", ",\n", out)

print(f"""// The rest of this file uses data provided by Mattermost.
// In sofar as it is protectable by copyright, it is licensed under the Apache license:
// https://github.com/mattermost/mattermost-webapp/blob/51185f6969bed6d061558de65f0722ffb6dc62b3/LICENSE.txt
//
// Generated with /tools/update_emoji.py
const emoji = {out};""")