use anyhow::Result;
use dialoguer::{Input, Select, theme::ColorfulTheme};
use iroh_tickets::endpoint::EndpointTicket;
use std::str::FromStr;

use crate::cli::Cli;
use crate::{host, viewer};

pub async fn run(cli: Cli) -> Result<()> {
    print_welcome();

    let theme = ColorfulTheme::default();
    let choice = Select::with_theme(&theme)
        .with_prompt("What do you want to do?")
        .items(&[
            "Host (share my screen)",
            "View (watch someone else's screen)",
        ])
        .default(0)
        .interact()?;

    match choice {
        0 => host::run(cli.into_host_opts(true)).await,
        _ => {
            let ticket = prompt_ticket(&theme)?;
            viewer::run(ticket, cli.into_viewer_opts(true)).await
        }
    }
}

fn print_welcome() {
    eprintln!();
    eprintln!("Welcome to PixelPass.");
    eprintln!();
}

fn prompt_ticket(theme: &ColorfulTheme) -> Result<EndpointTicket> {
    loop {
        let raw: String = Input::with_theme(theme)
            .with_prompt("Paste the share code you received")
            .interact_text()?;
        match EndpointTicket::from_str(raw.trim()) {
            Ok(t) => return Ok(t),
            Err(_) => eprintln!("That doesn't look like a share code. Try again."),
        }
    }
}

/// Player options the interactive viewer can launch.
#[derive(Clone, Copy)]
pub enum Player {
    Mpv,
    Vlc,
}

impl Player {
    pub fn spawn(self, url: &str) -> std::io::Result<()> {
        match self {
            Player::Mpv => crate::common::process::spawn_detached(
                "mpv",
                &[
                    "--profile=low-latency",
                    "--untimed",
                    "--hwdec=auto",
                    "--audio-buffer=0.2",
                    "--demuxer-max-bytes=2M",
                    "--demuxer-readahead-secs=0.5",
                    url,
                ],
            ),
            Player::Vlc => crate::common::process::spawn_detached(
                "vlc",
                &["--network-caching=200", "--live-caching=200", url],
            ),
        }
    }
}

pub fn prompt_player() -> Result<Player> {
    let theme = ColorfulTheme::default();
    let choice = Select::with_theme(&theme)
        .with_prompt("Connected. Pick a player to launch")
        .items(&["mpv", "VLC"])
        .default(0)
        .interact()?;
    Ok(if choice == 0 { Player::Mpv } else { Player::Vlc })
}