use leptos::*;
use leptos_use::docs::demo_or_body;
use leptos_use::{
    use_websocket, use_websocket_with_options, UseWebSocketOptions, UseWebSocketReadyState,
    UseWebsocketReturn,
};

use web_sys::{CloseEvent, Event};

#[component]
fn Demo(cx: Scope) -> impl IntoView {
    let (history, set_history) = create_signal(cx, vec![]);

    fn update_history(&history: &WriteSignal<Vec<String>>, message: String) {
        let _ = &history.update(|history: &mut Vec<_>| history.push(message));
    }
    // ----------------------------
    // use_websocket
    // ----------------------------

    let UseWebsocketReturn {
        ready_state,
        message,
        message_bytes,
        send,
        send_bytes,
        open,
        close,
        ..
    } = use_websocket(cx, "wss://echo.websocket.events/".to_string());

    let send_message = move |_| {
        let m = "Hello, world!".to_string();
        send(m.clone());
        set_history.update(|history: &mut Vec<_>| history.push(format! {"[send]: {:?}", m}));
    };

    let send_byte_message = move |_| {
        let m = b"Hello, world!\r\n".to_vec();
        send_bytes(m.clone());
        set_history.update(|history: &mut Vec<_>| history.push(format! {"[send_bytes]: {:?}", m}));
    };

    let status = move || ready_state().to_string();

    let connected = move || ready_state.get() == UseWebSocketReadyState::Open;

    let open_connection = move |_| {
        open();
    };
    let close_connection = move |_| {
        close();
    };

    create_effect(cx, move |_| {
        if let Some(m) = message.get() {
            update_history(&set_history, format! {"[message]: {:?}", m});
        };
    });

    create_effect(cx, move |_| {
        if let Some(m) = message_bytes.get() {
            update_history(&set_history, format! {"[message_bytes]: {:?}", m});
        };
    });

    // ----------------------------
    // use_websocket_with_options
    // ----------------------------

    let (history2, set_history2) = create_signal(cx, vec![]);

    let on_open_callback = move |e: Event| {
        set_history2.update(|history: &mut Vec<_>| {
            history.push(format! {"[onopen]: event {:?}", e.type_()})
        });
    };

    let on_close_callback = move |e: CloseEvent| {
        set_history2.update(|history: &mut Vec<_>| {
            history.push(format! {"[onclose]: event {:?}", e.type_()})
        });
    };

    let on_error_callback = move |e: Event| {
        set_history2.update(|history: &mut Vec<_>| {
            history.push(format! {"[onerror]: event {:?}", e.type_()})
        });
    };

    let on_message_callback = move |m: String| {
        set_history2.update(|history: &mut Vec<_>| history.push(format! {"[onmessage]: {:?}", m}));
    };

    let on_message_bytes_callback = move |m: Vec<u8>| {
        set_history2
            .update(|history: &mut Vec<_>| history.push(format! {"[onmessage_bytes]: {:?}", m}));
    };

    let UseWebsocketReturn {
        ready_state: ready_state2,
        send: send2,
        send_bytes: send_bytes2,
        open: open2,
        close: close2,
        message: message2,
        message_bytes: message_bytes2,
        ..
    } = use_websocket_with_options(
        cx,
        "wss://echo.websocket.events/".to_string(),
        UseWebSocketOptions::default()
            .manual(true)
            .on_open(on_open_callback.clone())
            .on_close(on_close_callback.clone())
            .on_error(on_error_callback.clone())
            .on_message(on_message_callback.clone())
            .on_message_bytes(on_message_bytes_callback.clone()),
    );

    let open_connection2 = move |_| {
        open2();
    };
    let close_connection2 = move |_| {
        close2();
    };

    let send_message2 = move |_| {
        let message = "Hello, use_leptos!".to_string();
        send2(message.clone());
        update_history(&set_history2, format! {"[send]: {:?}", message});
    };

    let send_byte_message2 = move |_| {
        let m = b"Hello, world!\r\n".to_vec();
        send_bytes2(m.clone());
        update_history(&set_history2, format! {"[send_bytes]: {:?}", m});
    };

    let status2 = move || ready_state2.get().to_string();

    create_effect(cx, move |_| {
        if let Some(m) = message2.get() {
            update_history(&set_history2, format! {"[message]: {:?}", m});
        };
    });

    create_effect(cx, move |_| {
        if let Some(m) = message_bytes2.get() {
            update_history(&set_history2, format! {"[message_bytes]: {:?}", m});
        };
    });

    let connected2 = move || ready_state2.get() == UseWebSocketReadyState::Open;

    view! { cx,
      <div class="container">
        <div class="flex flex-col lg:flex-row gap-4">
          <div class="w-full lg:w-1/2">
          <h1 class="text-xl lg:text-4xl mb-2">"use_websocket"</h1>
            <p>"status: " {status}</p>
            <button on:click=send_message disabled=move || !connected()>"Send"</button>
            <button on:click=send_byte_message disabled=move || !connected()>"Send bytes"</button>
            <button on:click=open_connection disabled=connected>"Open"</button>
            <button on:click=close_connection disabled=move || !connected()>"Close"</button>
            <div class="flex items-center">
              <h3 class="text-2xl mr-2">"History"</h3>
              <button on:click=move |_| set_history(vec![]) disabled=move || history.get().len() <= 0>"Clear"</button>
            </div>
            <For
              each=move || history.get().into_iter().enumerate()
              key=|(index, _)| *index
              view=move |cx, (_, message)| {
                view! {cx,  <div>{message}</div> }
              }
              />

          </div>
          <div class="w-full lg:w-1/2">
            <h1 class="text-xl lg:text-4xl mb-2">"use_websocket_with_options"</h1>
            <p>"status: " {status2}</p>
            <button on:click=open_connection2 disabled={connected2}>"Connect"</button>
            <button on:click=close_connection2 disabled=move || !connected2()>"Close"</button>
            <button on:click=send_message2 disabled=move || !connected2()>"Send"</button>
            <button on:click=send_byte_message2 disabled=move || !connected2()>"Send Bytes"</button>
            <div class="flex items-center">
              <h3 class="text-2xl mr-2">"History"</h3>
              <button on:click=move |_| set_history2(vec![]) disabled=move || history2.get().len() <= 0>"Clear"</button>
            </div>
            <ul>
            <For
              each=move || history2.get().into_iter().enumerate()
              key=|(index, _)| *index
              view=move |cx, (_, message)| {
                view! {cx,  <li>{message}</li> }
              }
              />
            </ul>
          </div>
        </div>


      </div>
    }
}

fn main() {
    _ = console_log::init_with_level(log::Level::Info);
    console_error_panic_hook::set_once();

    mount_to(demo_or_body(), |cx| {
        view! { cx, <Demo /> }
    })
}