from textual.widgets import RichLog, Button
from textual.containers import Vertical, Horizontal
from textual.message import Message


class LogPanel(Vertical):
    DEFAULT_CSS = """
    LogPanel {
        padding: 1 2;
    }
    #log-toolbar {
        height: auto;
        margin-bottom: 1;
    }
    RichLog {
        height: 1fr;
        border: solid $primary;
    }
    """

    class BackPressed(Message):
        pass

    def __init__(self):
        super().__init__()
        self.log = None

    def compose(self):
        with Horizontal(id="log-toolbar"):
            yield Button("⬅ Retour", id="log-back")
        self.log = RichLog(id="log-view", highlight=True)
        yield self.log

    def write(self, line: str):
        if self.log:
            self.log.write(line)

    def clear(self):
        if self.log:
            self.log.clear()

    def on_button_pressed(self, event: Button.Pressed):
        if event.button.id == "log-back":
            self.post_message(self.BackPressed())