import time
from typing import Callable

from fabric.widgets.box import Box
from fabric.widgets.button import Button
from fabric.widgets.image import Image
from fabric.widgets.label import Label

from sims.services.notification_history import HistoryEntry
from sims.utils.markup import render_body_markup


def _time_ago(ts: float, now: float | None = None) -> str:
    delta = int((now if now is not None else time.time()) - ts)
    if delta < 60:
        return "just now"
    if delta < 3600:
        return f"{delta // 60}m ago"
    if delta < 86400:
        return f"{delta // 3600}h ago"
    return f"{delta // 86400}d ago"


class NotificationHistoryEntryWidget(Box):
    THUMB_SIZE = 40

    def __init__(
        self,
        entry: HistoryEntry,
        on_dismiss: Callable[[int], None],
        **kwargs,
    ):
        super().__init__(
            name="notification-history-entry",
            spacing=8,
            orientation="h",
            **kwargs,
        )
        urgency_class = {0: "urgency-low", 1: "urgency-normal", 2: "urgency-critical"}.get(
            entry.urgency, "urgency-normal"
        )
        self.get_style_context().add_class(urgency_class)

        if entry.pixbuf is not None:
            self.add(Image(pixbuf=entry.pixbuf, h_align="start", v_align="start"))

        text_children: list = []

        header = Box(orientation="h", h_expand=True)
        header.pack_start(
            Label(
                label=entry.summary,
                ellipsization="end",
                h_align="start",
            )
            .build()
            .add_style_class("summary")
            .unwrap(),
            True,
            True,
            0,
        )
        header.pack_end(
            Label(label=_time_ago(entry.timestamp), h_align="end")
            .build()
            .add_style_class("timestamp")
            .unwrap(),
            False,
            False,
            0,
        )
        text_children.append(header)

        if entry.body:
            body_text, body_is_markup = render_body_markup(entry.body)
            body_kwargs = {"markup": body_text} if body_is_markup else {"label": body_text}
            text_children.append(
                Label(
                    **body_kwargs,
                    line_wrap="word-char",
                    h_align="start",
                    v_align="start",
                )
                .build()
                .add_style_class("body")
                .unwrap()
            )

        text_box = Box(orientation="v", spacing=2, children=text_children, h_expand=True)
        self.add(text_box)

        self.pack_end(
            Button(
                name="notification-history-dismiss",
                image=Image(icon_name="window-close-symbolic", icon_size=14),
                v_align="start",
                h_align="end",
                on_clicked=lambda *_: on_dismiss(entry.id),
            ),
            False,
            False,
            0,
        )