use log::info;
//use log::Level;
use reqwasm::http::Request;
use serde::{Deserialize, Serialize};
use sycamore::futures::spawn_local;
use sycamore::prelude::*;
//use sycamore::suspense::Suspense;
use sycamore_router::Route;
use wasm_bindgen::JsCast;
use web_sys::{Event, HtmlInputElement, KeyboardEvent}; // 0.3.5

#[derive(Deserialize, Serialize, Debug, Default, Clone, PartialEq, Hash, Eq)]
pub struct BookUI {
    id: i32,
    open_library_key: Option<String>,
    title: String,
    edition_count: Option<i32>,
    first_publish_year: Option<i32>,
    median_page_count: Option<i32>,
    goodread_id: Option<String>,
    description: Option<String>,
    cover: Option<String>,
    location: Option<String>,
    time_added: Option<String>,
    rating: Option<i32>,
    comments: Option<String>,
    author_name: Option<Vec<String>>,
    person: Option<Vec<String>>,
    place: Option<Vec<String>>,
    subject: Option<Vec<String>>,
    time: Option<Vec<String>>,
    isbn: Option<Vec<String>>,
}

#[derive(Debug, Default, Clone)]
pub struct AppState {
    pub books: RcSignal<Vec<BookUI>>,
    pub search: RcSignal<String>,
    pub openlibrary: RcSignal<bool>,
    pub adding: RcSignal<bool>,
    pub addingbook: RcSignal<BookUI>,
}

#[derive(Route)]
enum AppRoutes {
    #[to("/")]
    Home,
    #[to("/hello-server")]
    HelloServer,
    #[not_found]
    NotFound,
}

async fn fetch_books(search: String) -> Result<Vec<BookUI>, reqwasm::Error> {
    let url = format!("http://localhost:8081/api/search_openlibrary?search={}", search);
    let resp = Request::get(&url).send().await?;
    println!("Fetching books\n");
    let body = resp.json::<Vec<BookUI>>().await?;
    Ok(body)
}

async fn add_book(record: BookUI) -> Result<String, reqwasm::Error> {
    let url = format!("http://localhost:8081/api/create");
    let _resp = Request::post(&url).body(serde_wasm_bindgen::to_value(&record).unwrap()).send().await?;
    Ok("OK".to_string())
}

async fn delete_book(id: i32) -> Result<String, reqwasm::Error> {
    let url = format!("http://localhost:8081/api/delete/{}", id);
    let _resp = Request::post(&url).send().await?;
    Ok("OK".to_string())
}

async fn list_books() -> Result<Vec<BookUI>, reqwasm::Error> {
    let url = format!("http://localhost:8081/api/list");
    let resp = Request::post(&url).send().await?;
    println!("Fetching books\n");
    let body = resp.json::<Vec<BookUI>>().await?;
    Ok(body)
}

#[component]
pub fn Header<G: Html>(cx: Scope) -> View<G> {
    let app_state = use_context::<AppState>(cx);
    let value = create_signal(cx, String::new());
    let input_ref = create_node_ref(cx);

    let handle_submit = |event: Event| {
        let event: KeyboardEvent = event.unchecked_into();

        if event.key() == "Enter" {
            let mut task = value.get().as_ref().clone();
            task = task.trim().to_string();

            if !task.is_empty() {
                app_state.search.set(task);
    app_state.openlibrary.set(true);
                println!("Fetching search\n");
                info!("Fetching search\n");
                value.set("".to_string());
                input_ref
                    .get::<DomNode>()
                    .unchecked_into::<HtmlInputElement>()
                    .set_value("");
            }
        }
    };
 let click_listall = |_| (app_state.openlibrary.set(false));
  let click_addbook = |_| {
      app_state.adding.set(true);
  app_state.addingbook.set(BookUI::default());
  };
    view! { cx,
        header(class="header") {
            h1 { "Search OpenLibrary" }
            input(ref=input_ref,
                class="new-todo",
                placeholder="What needs to be done?",
                bind:value=value,
                on:keyup=handle_submit,
            )
                 button(on:click=click_listall) { "List All DB" }
                  button(on:click=click_addbook) { "+ Add New" }
 

        }
    }
}

#[component]
async fn ListDB<G: Html>(cx: Scope<'_>) -> View<G> {
    let app_state = use_context::<AppState>(cx);
    create_effect(cx, || {
        let app_state = app_state.clone();
        
        if *app_state.openlibrary.get() == false {
        spawn_local(async move {
            app_state.books.set(
                list_books()
                    .await
                    .unwrap(),
            )
        });
        }
    });
 
    let docs = create_memo(cx, || app_state.books.get().iter().cloned().collect::<Vec<_>>());
    view! {cx,
        p {
                (if *app_state.openlibrary.get() == false {
              view!{ cx,
                //span {(app_state.books.get().num_found)}
                ul {
            Keyed(
             iterable=docs,
             view=move |cx, x| view! { cx,
                 li { (format!("{:?}",x))
                 }
              },
              key =|x| x.id )
              }
             }
                } else {
                    view!{cx,""}
                }
              )
        }
    }
}


#[component]
async fn ListOL<G: Html>(cx: Scope<'_>) -> View<G> {
    let app_state = use_context::<AppState>(cx);
    create_effect(cx, || {
        //info!(
        //    "The state changed. New value: {} {}",
        //    app_state.search.get(),
        //);
        let app_state = app_state.clone();
        app_state.search.track();
        spawn_local(async move {
            app_state.books.set(
                fetch_books(app_state.search.get().to_string())
                    .await
                    .unwrap(),
            )
        });
    });
 
    let docs = create_memo(cx, || app_state.books.get().iter().cloned().collect::<Vec<_>>());
    //let docs = create_signal(cx, vec![1, 2]);
    view! {cx,
        p {
            (if *app_state.openlibrary.get() == true {
                view!{ cx,
                 ul {
            Keyed(
             iterable=docs,
             view=move |cx, x| view! { cx,
                 li { (format!("{:?}",x))
                 }
              },
              key =|x| x.id )
              }
             }
            } else {
                view!{cx,""}
            }
            )
        }
    }
}

#[component]
async fn AddingUI<G: Html>(cx: Scope<'_>) -> View<G> {
    let app_state = use_context::<AppState>(cx);
    view! {cx,
        p {
(if *app_state.adding.get() == true {
                view!{ cx,"Hello" }
            } else {
                view!{cx,""}
            }
            )
        }
    }
}


#[component]
fn App<G: Html>(cx: Scope) -> View<G> {
    let app_state = AppState {
        books: create_rc_signal(Vec::new()),
        search: create_rc_signal(String::default()),
        openlibrary: create_rc_signal(bool::default()),
        adding: create_rc_signal(bool::default()),
        addingbook: create_rc_signal(BookUI::default()),
    };
    provide_context(cx, app_state);
    view! {
        cx,
        div {
            Header {}
            AddingUI{}
            ListOL {}
            ListDB{}
        }
    }
}

fn main() {
    console_error_panic_hook::set_once();
    console_log::init_with_level(log::Level::Debug).unwrap();

    sycamore::render(|cx| view! { cx, App {} });
}