"""
File: languages.py
Author: Elena Ryumina and Dmitry Ryumin
Description: Selected language event handlers for Gradio app.
License: MIT License
"""

import gradio as gr

# Importing necessary components for the Gradio app
from app.description import DESCRIPTIONS
from app.description_steps import STEP_1
from app.config import config_data
from app.components import (
    files_create_ui,
    dropdown_create_ui,
)


def event_handler_languages(languages, files):
    if languages.lower() == "english":
        lang_id = 0
        choices = config_data.Settings_LANGUAGES_EN
    elif languages.lower() == "russian":
        lang_id = 1
        choices = config_data.Settings_LANGUAGES_RU
    else:
        lang_id = 0
        choices = config_data.Settings_LANGUAGES_EN

    return (
        gr.Markdown(value=DESCRIPTIONS[lang_id]),
        gr.HTML(value=STEP_1[lang_id]),
        gr.Image(
            value=config_data.StaticPaths_IMAGES + config_data.Images_LANGUAGES[lang_id]
        ),
        dropdown_create_ui(
            label=None,
            info=None,
            choices=choices,
            value=choices[lang_id],
            visible=True,
            show_label=False,
            elem_classes="dropdown-language-container",
        ),
        gr.Tab(config_data.Labels_APP_LABEL[lang_id]),
        gr.Tab(config_data.Labels_ABOUT_APP_LABEL[lang_id]),
        gr.Tab(config_data.Labels_ABOUT_AUTHORS_LABEL[lang_id]),
        gr.Tab(config_data.Labels_REQUIREMENTS_LABEL[lang_id]),
        files_create_ui(
            value=files,
            label="{} ({})".format(
                config_data.OtherMessages_VIDEO_FILES[lang_id],
                ", ".join(config_data.Settings_SUPPORTED_VIDEO_EXT),
            ),
            file_types=[f".{ext}" for ext in config_data.Settings_SUPPORTED_VIDEO_EXT],
        ),
    )