//! The Earbud settings page: dual connection, find the buds, and what they run.

use iced::Element;
use iced::widget::{column, text};

use crate::buds::Buds;
use crate::icons::Icon;
use crate::theme::Look;
use crate::ui;
use crate::{Item, Marks, Message};

/// The switch for dual connection, by its key.
pub const DUAL: &str = "dual";

/// What the keyboard cursor can rest on, top to bottom.
pub fn items(buds: &Buds) -> Vec<Item> {
    let dual = buds.status.switches.iter().any(|s| s.key == DUAL);
    dual.then_some(Item::Switch(DUAL))
        .into_iter()
        .chain([Item::Find])
        .collect()
}

/// `ringing`: the buds were told to ring and not yet to stop.
pub fn view<'a>(look: Look, buds: &'a Buds, ringing: bool, marks: Marks) -> Element<'a, Message> {
    let p = look.p;
    let dual = buds.status.switches.iter().find(|s| s.key == DUAL).map(|dual| {
        let about = if marks.pending.contains(&Item::Switch(DUAL)) {
            "Saving…"
        } else if dual.on {
            "Your buds stay connected to two devices at once, like your phone and this computer"
        } else {
            "Your buds connect to one device at a time"
        };
        let row = ui::setting(
            look,
            Icon::Dual,
            "Dual connection",
            Some(about.to_owned()),
            ui::switch(look, dual.on),
            Some(Message::Switch(DUAL, !dual.on)),
            marks.focus == Some(Item::Switch(DUAL)),
        );
        column![ui::heading(look, "Connection"), ui::card(look, vec![row])].spacing(10)
    });
    let about = match (marks.pending.contains(&Item::Find), ringing) {
        (true, false) => "Starting…",
        (true, true) => "Stopping…",
        (false, true) => "Ringing: stop it once you have found them",
        (false, false) => "Plays a loud sound from both buds",
    };
    let find = ui::setting(
        look,
        Icon::Find,
        "Find my earbuds",
        Some(about.to_owned()),
        ui::pill(look, if ringing { "Stop" } else { "Ring" }, ringing, Message::Find),
        None,
        marks.focus == Some(Item::Find),
    );
    let value = |value: Option<&'a str>| -> Element<'a, Message> {
        text(value.unwrap_or("Unknown")).size(14).color(p.dim).into()
    };
    let status = &buds.status;
    let facts = vec![
        ui::setting(look, Icon::Earbud, "Name", None, value(Some(&buds.name)), None, false),
        ui::setting(
            look,
            Icon::Chip,
            "Firmware",
            None,
            value(status.firmware.as_deref()),
            None,
            false,
        ),
        ui::setting(
            look,
            Icon::Info,
            "Audio codec",
            None,
            value(status.codec.as_deref()),
            None,
            false,
        ),
    ];
    column![ui::title(look, "Earbud settings")]
        .push(dual)
        .push(column![ui::heading(look, "Find my earbuds"), ui::card(look, vec![find])].spacing(10))
        .push(column![ui::heading(look, "About these buds"), ui::card(look, facts)].spacing(10))
        .spacing(18)
        .into()
}