"""
translation_sync_common.py - Shared merge/write logic for the *_translations sync
scripts (sync_dialogue_translations.py, sync_cutscene_translations.py).

Each sync script collects strings from its own JSON shape (dialogue nodes/choices,
cutscene lines, ...) and hands the ordered list of unique strings to
sync_translations(), which merges them into a translations JSON file shaped as
{"dialogue_translations": [{"key":..., "ru":..., "en":...}, ...]}. New entries are
always appended at the end so missing translations are easy to locate.
"""

import json
import os


def sync_translations(strings: list[str], translations_path: str) -> None:
    if os.path.isfile(translations_path):
        with open(translations_path, 'r', encoding='utf-8') as f:
            translations = json.load(f)
    else:
        translations = {}

    entries = translations.setdefault("dialogue_translations", [])
    existing_keys = {entry.get("key") for entry in entries}

    added = 0
    for text in strings:
        if text in existing_keys:
            continue
        entries.append({"key": text, "ru": text, "en": ""})
        existing_keys.add(text)
        added += 1

    os.makedirs(os.path.dirname(os.path.abspath(translations_path)), exist_ok=True)
    with open(translations_path, 'w', encoding='utf-8') as f:
        json.dump(translations, f, indent=4, ensure_ascii=False)

    print(f"Saved: {translations_path}  ({added} new key(s) added, {len(entries)} total)")