#!/usr/bin/env python3
"""The voice check of aac-core's keyboard/letter_names.json: each language's
letter names read by espeak-ng (where it has a voice for the language), and
any two keys whose names it reads alike reported. A collision is not proof
(espeak-ng's voices are rougher than a device's), but every one is a name to
look at before a language's table is marked agreed.

usage: python3 tools/keyboard/check_letter_names.py   (from aac/aac-rs; needs espeak-ng)
"""
import json
import subprocess
from pathlib import Path

TABLE = Path(__file__).resolve().parents[2] / "crates/aac-core/src/keyboard/letter_names.json"
VOICE = {"en": "en-us", "fr": "fr-fr", "zh": "cmn"}


def main():
    table = json.loads(TABLE.read_text(encoding="utf-8"))
    listed = subprocess.run(["espeak-ng", "--voices"], capture_output=True, text=True, check=True).stdout
    voices = {line.split()[1] for line in listed.splitlines()[1:] if len(line.split()) > 1}
    for code, names in sorted(table["languages"].items()):
        voice = VOICE.get(code, code)
        if voice not in voices:
            print(f"{code}: no espeak-ng voice")
            continue
        heard = {}
        for key, said in {**names["letters"], **{f"form {k}": v for k, v in names["forms"].items()}}.items():
            ph = subprocess.run(["espeak-ng", "-v", voice, "-q", "-x", said], capture_output=True, text=True).stdout.strip()
            heard.setdefault(ph, []).append(key)
        alike = [keys for keys in heard.values() if len(keys) > 1]
        print(f"{code}: {'alike ' + str(alike) if alike else 'all distinct'} ({names['review']['status']})")


if __name__ == "__main__":
    main()