"""Runtime tile configuration transported through the normal ESPHome API.

`smart_display: language: nl` (app 0.2.90) builds the screen's texts in that language: the `screen` section of
screen_manager/translations/nl.json, with English for any key it lacks, becomes one table in main.cpp
(screen_text_gen.py, screen_text.h). The shared core sets it from the LANGUAGE substitution, which ESP Screens writes
into a screen's YAML.
"""
import logging

import esphome.codegen as cg
import esphome.config_validation as cv

from . import screen_text_gen

CODEOWNERS = []
AUTO_LOAD = ["json"]
_LOGGER = logging.getLogger(__name__)

CONF_LANGUAGE = "language"


def _language(value):
    value = cv.string_strict(value).strip()
    if not screen_text_gen.LANGUAGE_CODE.fullmatch(value):
        raise cv.Invalid("Expected a language code such as en, nl or pt-BR")
    return value


CONFIG_SCHEMA = cv.Schema({cv.Optional(CONF_LANGUAGE, default="en"): _language})


async def to_code(config):
    wanted = config[CONF_LANGUAGE]
    language, code = screen_text_gen.definitions(wanted)
    if language != wanted:
        # ESP Screens only writes languages it has; a hand-written one it lacks builds in the nearest it does have.
        _LOGGER.warning("No translation for %s yet; the screen's texts are in %s", wanted, language)
    cg.add_global(cg.RawStatement(code))