"""Main Textual application for the Translation Viewer TUI."""

from __future__ import annotations

from pathlib import Path

from textual.app import App, ComposeResult
from textual.binding import Binding
from textual.containers import Horizontal, ScrollableContainer
from textual.widgets import Footer, Header

from src.tui.data_provider import TUIDataProvider
from src.tui.widgets import DetailPanel, VerseSelected, VerseTree


class TranslationViewerApp(App):
    """TUI for viewing Bible translations and evaluations."""

    TITLE = "Japanese Bible Translator Viewer"
    CSS = """
    Screen {
        layout: horizontal;
    }

    #tree-container {
        width: 30%;
        min-width: 25;
        height: 100%;
        border: solid $primary;
    }

    #tree {
        width: 100%;
        height: 100%;
    }

    #detail-container {
        width: 70%;
        height: 100%;
        border: solid $secondary;
    }

    #detail {
        width: 100%;
        height: auto;
        padding: 1;
    }
    """

    BINDINGS = [
        Binding("q", "quit", "Quit"),
        Binding("d", "toggle_dark_mode", "Toggle dark mode"),
        Binding("r", "refresh", "Refresh"),
    ]

    def __init__(self, data_dir: Path | str = "data") -> None:
        """Initialize the app.

        Args:
            data_dir: Path to the data directory.
        """
        super().__init__()
        self.data_dir = Path(data_dir)
        self.data_provider = TUIDataProvider(self.data_dir)

    def compose(self) -> ComposeResult:  # pragma: no cover
        """Compose the application layout."""
        yield Header()
        with Horizontal():
            with ScrollableContainer(id="tree-container"):
                yield VerseTree(self.data_provider, id="tree")
            with ScrollableContainer(id="detail-container"):
                yield DetailPanel(self.data_provider, id="detail")
        yield Footer()

    def on_verse_selected(self, message: VerseSelected) -> None:  # pragma: no cover
        """Handle verse selection from the tree."""
        detail_panel = self.query_one("#detail", DetailPanel)
        detail_panel.update_verse(message.book, message.chapter, message.verse)

    def action_toggle_dark_mode(self) -> None:  # pragma: no cover
        """Toggle dark mode."""
        self.theme = (
            "textual-light" if self.theme == "textual-dark" else "textual-dark"
        )

    def action_refresh(self) -> None:  # pragma: no cover
        """Refresh the tree view."""
        tree = self.query_one("#tree", VerseTree)
        tree.clear()
        tree._populate_tree()


def run_tui(data_dir: Path | str = "data") -> None:  # pragma: no cover
    """Run the TUI application.

    Args:
        data_dir: Path to the data directory.
    """
    app = TranslationViewerApp(data_dir=data_dir)
    app.run()


if __name__ == "__main__":
    run_tui()