use gloo::net::http::Request;
use serde::{Deserialize, Serialize};
use wasm_bindgen_futures::spawn_local;
use yew::Properties;
use yew::prelude::*;

#[derive(Serialize, Deserialize, Clone, Debug)]
struct GenerationRequest {
    directory: String,
    common_name: String,
}

use yew_router::prelude::*;

#[derive(Clone, Routable, PartialEq)]
pub enum Route {
    #[at("/")]
    Home,
    #[at("/dir")]
    Directories,
    #[at("/dir/:dir_name")]
    Configs { dir_name: String },
    #[at("/dir/:dir_name/:file_name")]
    Config { dir_name: String, file_name: String },
    #[at("/gen/:dir_name")]
    Generate { dir_name: String },
    #[not_found]
    #[at("/404")]
    NotFound,
}

#[derive(Properties, PartialEq)]
pub struct NavProps {
    #[prop_or("".into())]
    pub currrent_dir: AttrValue,
    #[prop_or(Route::Home)]
    pub currrent_route: Route,
}

// component to show the navbar
#[function_component(Navbar)]
fn navbar(props: &NavProps) -> Html {
    let classes_active = "block py-2 px-3 text-white bg-blue-700 rounded-sm md:bg-transparent md:text-blue-700 md:p-0 dark:text-white md:dark:text-blue-500";
    let classes_inactive = "block py-2 px-3 text-gray-900 rounded-sm hover:bg-gray-100 md:hover:bg-transparent md:border-0 md:hover:text-blue-700 md:p-0 dark:text-white md:dark:hover:text-blue-500 dark:hover:bg-gray-700 dark:hover:text-white md:dark:hover:bg-transparent";
    let has_dir = props.currrent_dir.len() > 0;
    let is_current_home = props.currrent_route == Route::Home;

    html! {
        <nav class="bg-white border-gray-200 dark:bg-gray-900">
            <div class="max-w-screen-xl flex flex-wrap items-center justify-between mx-auto p-4">
            <a href="/" class="flex items-center space-x-3 rtl:space-x-reverse">
                <span class="self-center text-2xl font-semibold whitespace-nowrap dark:text-white">{"Home"}</span>
            </a>
            <button data-collapse-toggle="navbar-default" type="button" class="inline-flex items-center p-2 w-10 h-10 justify-center text-sm text-gray-500 rounded-lg md:hidden hover:bg-gray-100 focus:outline-none focus:ring-2 focus:ring-gray-200 dark:text-gray-400 dark:hover:bg-gray-700 dark:focus:ring-gray-600" aria-controls="navbar-default" aria-expanded="false">
                <span class="sr-only">{"Open main menu"}</span>
                <svg class="w-5 h-5" aria-hidden="true" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 17 14">
                    <path stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M1 1h15M1 7h15M1 13h15"/>
                </svg>
            </button>
            <div class="hidden w-full md:block md:w-auto" id="navbar-default">
            <ul class="font-medium flex flex-col p-4 md:p-0 mt-4 border border-gray-100 rounded-lg bg-gray-50 md:flex-row md:space-x-8 rtl:space-x-reverse md:mt-0 md:border-0 md:bg-white dark:bg-gray-800 md:dark:bg-gray-900 dark:border-gray-700">
                <li class={if is_current_home {classes_active} else {classes_inactive}}><Link<Route> to={Route::Home}>{ "Home" }</Link<Route>></li>
                if has_dir {
                    <li class={
                        match props.currrent_route.clone() {
                            Route::Configs{dir_name} if dir_name == props.currrent_dir.to_string() => classes_active,
                            _ => classes_inactive,
                        }
                    }><Link<Route> to={Route::Configs{dir_name: props.currrent_dir.to_string()}}>{ props.currrent_dir.clone() }</Link<Route>></li>
                }
                <li class={if !is_current_home {classes_active} else {classes_inactive}}><Link<Route> to={Route::Directories}>{ "Directories" }</Link<Route>></li>
            </ul>
            </div>
            </div>
        </nav>
    }
}

// component to show the directories
#[function_component(Directories)]
fn directories() -> Html {
    let dirs = use_state(Vec::new);
    let message = use_state(|| "".to_string());

    let get_dirs = {
        let dirs = dirs.clone();
        let message = message.clone();
        Callback::from(move |_| {
            let url = "http://127.0.0.1:8000/api/v1/get/";
            let dirs = dirs.clone();
            let message = message.clone();
            spawn_local(async move {
                match Request::get(url).send().await {
                    Ok(response) if response.ok() => match response.json::<Vec<String>>().await {
                        Ok(mut json) => {
                            json.sort();
                            dirs.set(json);
                        }
                        _ => message.set("Failed to fetch directories".into()),
                    },
                    _ => message.set("Failed to fetch directories".into()),
                }
            })
        })
    };

    // Добавляем use_effect с пустым вектором зависимостей
    {
        let get_dirs = get_dirs.clone();
        use_effect_with((), move |_| {
            get_dirs.emit(());
            ()
        });
    }

    html! {
        <div>
            <p><button
            onclick={get_dirs.reform(|_| ())}
            class="bg-gray-500 hover:bg-gray-700 text-white font-bold py-2 px-4 rounded mb-4">
            { "Refresh" }
            </button></p>
            <h1>{"Directories"}</h1>
            <h2 class="text-2xl font-bold text-gray-700 mb-2">{ "Directory List" }</h2>
            <ul class="list-disc pl-5">
            { for (*dirs).iter().map(|dir| {
                html! {
                    <li class="mb-2">
                    <Link<Route> to={Route::Configs { dir_name: dir.to_string() }}>{dir}</Link<Route>>
                    </li>
                }
            }) }
            </ul>

            if !message.is_empty() {
                <p class="text-green-500 mt-2">{ &*message }</p>
            }
        </div>
    }
}

#[derive(Properties, PartialEq)]
pub struct ConfigsProps {
    pub dir: AttrValue,
}

#[function_component(Configs)]
fn configs(props: &ConfigsProps) -> Html {
    let configs = use_state(Vec::new);
    let message = use_state(|| "".to_string());
    let dir_name = props.dir.clone();

    let get_configs = {
        let configs = configs.clone();
        let message = message.clone();
        Callback::from(move |_| {
            let url = format!("http://127.0.0.1:8000/api/v1/get/{}", dir_name.clone());
            let configs = configs.clone();
            let message = message.clone();
            spawn_local(async move {
                match Request::get(&url).send().await {
                    Ok(response) if response.ok() => match response.json::<Vec<String>>().await {
                        Ok(mut json) => {
                            json.sort();
                            configs.set(json);
                        }
                        _ => message.set("Failed to fetch configs".into()),
                    },
                    _ => message.set("Failed to fetch configs".into()),
                }
            })
        })
    };

    {
        let get_configs_clone = get_configs.clone();
        use_effect_with((), move |_| {
            get_configs_clone.emit(());
            ()
        });
    }

    html! {
        <div>
            <p><button
            onclick={get_configs.reform(|_| ())}
            class="bg-gray-500 hover:bg-gray-700 text-white font-bold py-2 px-4 rounded mb-4">
            { "Refresh" } </button>
            <Link<Route> to={Route::Generate { dir_name: props.dir.clone().to_string() }}> <button class="text-white bg-gradient-to-br from-pink-500 to-orange-400 hover:bg-gradient-to-bl focus:ring-4 focus:outline-none focus:ring-pink-200 dark:focus:ring-pink-800 font-medium rounded-lg text-sm px-5 py-2.5 text-center me-2 mb-2">
            { "Generate" } </button> </Link<Route>> </p>
            <h1>{ "Configs" }</h1>
            <h2 class="text-2xl font-bold text-gray-700 mb-2">{format!("Configs for {}:", props.dir.clone())}</h2>
            <table class="w-full text-sm text-left rtl:text-right text-gray-500 dark:text-gray-400">
                <thead class="text-xs text-gray-700 uppercase bg-gray-50 dark:bg-gray-700 dark:text-gray-400">
                    <tr>
                        <th scope="col" class="px-6 py-3">
                            {"Name"}
                        </th>
                    </tr>
                </thead>
                <tbody>
                { for (*configs).iter().map(|file_name| {
                    html! {
                        <tr class="odd:bg-white odd:dark:bg-gray-900 even:bg-gray-50 even:dark:bg-gray-800 border-b dark:border-gray-700 border-gray-200">
                            <th scope="row" class="px-6 py-4 font-medium text-gray-900 whitespace-nowrap dark:text-white">
                                <Link<Route> to={Route::Config { dir_name: props.dir.clone().to_string(), file_name: file_name.clone() }}>{file_name}</Link<Route>>
                            </th>
                        </tr>
                    }
                }) }
                </tbody>
            </table>

            if !message.is_empty() {
                <p class="text-green-500 mt-2">{ &*message }</p>
            }
        </div>
    }
}

#[derive(Properties, PartialEq)]
pub struct ConfigProps {
    pub dir: AttrValue,
    pub file_name: AttrValue,
}

#[function_component(Config)]
fn config(props: &ConfigProps) -> Html {
    let dir_name = props.dir.clone();
    let file_name = props.file_name.clone();
    let contents = use_state(|| "".to_string());

    let get_contents = {
        let contents = contents.clone();
        Callback::from(move |_| {
            let url = format!(
                "http://127.0.0.1:8000/api/v1/get/{}/{}",
                dir_name.clone(),
                file_name.clone()
            );
            let contents = contents.clone();
            spawn_local(async move {
                match Request::get(&url).send().await {
                    Ok(response) if response.ok() => {
                        if let Ok(text) = response.text().await {
                            contents.set(text);
                        }
                    }
                    _ => contents.set("Failed to fetch contents".into()),
                }
            })
        })
    };

    {
        let get_contents_clone = get_contents.clone();
        use_effect_with((), move |_| {
            get_contents_clone.emit(());
            ()
        });
    }

    html! {
        <div class="w-full">
            <p><button
            onclick={get_contents.reform(|_| ())}
            class="bg-gray-500 hover:bg-gray-700 text-white font-bold py-2 px-4 rounded mb-4">
            { "Refresh" }
            </button></p>
            <p>{"Config "}<b>{props.file_name.clone()}</b>{" for "}<b>{props.dir.clone()}</b>{":"}</p>
            <div class="mb-2 flex justify-between items-center">
                <p class="text-sm font-medium text-gray-900 dark:text-white">{"Config "}<b>{props.file_name.clone()}</b>{" for "}<b>{props.dir.clone()}</b>{":"}</p>
            </div>
            <div class="relative bg-gray-50 rounded-lg dark:bg-gray-700 p-4">
                <div class="overflow-scroll max-h-full">
                    <pre><code id="code-block" class="text-sm text-gray-500 dark:text-gray-400 whitespace-pre">{&*contents}</code></pre>
            </div>
            <div class="absolute top-2 end-2 bg-gray-50 dark:bg-gray-700">
            <a href={format!("http://127.0.0.1:8000/api/v1/get/{}/{}", props.dir.clone(), props.file_name.clone())} download={props.file_name.clone()}><button type="button" class="text-white bg-gradient-to-br from-purple-600 to-blue-500 hover:bg-gradient-to-bl focus:ring-4 focus:outline-none focus:ring-blue-300 dark:focus:ring-blue-800 font-medium rounded-lg text-sm px-5 py-2.5 text-center me-2 mb-2">
            <svg class="w-6 h-6 text-gray-800 dark:text-white" aria-hidden="true" xmlns="http://www.w3.org/2000/svg" width="24" height="24" fill="currentColor" viewBox="0 0 24 24">
              <path fill-rule="evenodd" d="M13 11.15V4a1 1 0 1 0-2 0v7.15L8.78 8.374a1 1 0 1 0-1.56 1.25l4 5a1 1 0 0 0 1.56 0l4-5a1 1 0 1 0-1.56-1.25L13 11.15Z" clip-rule="evenodd"/>
              <path fill-rule="evenodd" d="M9.657 15.874 7.358 13H5a2 2 0 0 0-2 2v4a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-4a2 2 0 0 0-2-2h-2.358l-2.3 2.874a3 3 0 0 1-4.685 0ZM17 16a1 1 0 1 0 0 2h.01a1 1 0 1 0 0-2H17Z" clip-rule="evenodd"/>
            </svg>{"Download"}</button></a>
        </div>
        </div>
        </div>
    }
}

#[derive(Properties, PartialEq)]
pub struct GenerateProps {
    pub dir: AttrValue,
}

#[function_component(Generate)]
fn generate(props: &GenerateProps) -> Html {
    let dir_name = props.dir.clone();
    let config_name = use_state(|| "".to_string());
    let result = use_state(|| "".to_string());
    let error = use_state(|| "".to_string());
    let done = use_state(|| false);

    let generate_config = {
        let dir_name = dir_name.clone();
        let config_name = config_name.clone();
        let done = done.clone();
        let result = result.clone();
        let error = error.clone();
        Callback::from(move |_| {
            let request_body = GenerationRequest {
                directory: dir_name.clone().to_string(),
                common_name: config_name.clone().to_string(),
            };
            let json_payload = serde_json::to_string(&request_body).unwrap();
            let url = "http://127.0.0.1:8000/api/v1/generate/";
            let result = result.clone();
            let done = done.clone();
            let error = error.clone();
            spawn_local(async move {
                match Request::post(url)
                    .header("Content-Type", "application/json")
                    .body(json_payload)
                    .unwrap()
                    .send()
                    .await
                {
                    Ok(response) if response.ok() => {
                        if let Ok(text) = response.text().await {
                            result.set(text);
                            done.set(true);
                            error.set("".into());
                        }
                    }
                    _ => {
                        error.set("Failed to generate config".into());
                    }
                }
            })
        })
    };

    html! {
        <div>
        if !*done.clone() {
            <div class="w-full">
            <h2 class="text-2xl font-bold text-gray-700 mb-2">{format!("Generate config for {}:", props.dir.clone())}</h2>
                <form class="mb-2">
                <span><label class="block mb-2 text-sm font-medium px-4 py-2" for="common-name">{"Common Name:"}
                </label> <input type="text" id="common-name" placeholder="enter common name" class="border rounded px-4 py-2 mr-2" oninput={Callback::from({
                    let config_name = config_name.clone();
                    move |e: InputEvent| {
                        let input = e.target_dyn_into::<web_sys::HtmlInputElement>().unwrap();
                        config_name.set(input.value());
                    }
                })} /></span>
                </form>
                <button onclick={generate_config.reform(|_| ())}
                class="text-white bg-gradient-to-r from-red-400 via-red-500 to-red-600 hover:bg-gradient-to-br focus:ring-4 focus:outline-none focus:ring-red-300 dark:focus:ring-red-800 shadow-lg shadow-red-500/50 dark:shadow-lg dark:shadow-red-800/80 font-medium rounded-lg text-sm px-5 py-2.5 text-center me-2 mb-2">
                { "Generate" }
                </button>
                if !error.is_empty() {
                    <div class="flex items-center p-4 mb-4 text-sm text-red-800 rounded-lg bg-red-50 dark:bg-gray-800 dark:text-red-400" role="alert">
                    <svg class="shrink-0 inline w-4 h-4 me-3" aria-hidden="true" xmlns="http://www.w3.org/2000/svg" fill="currentColor" viewBox="0 0 20 20">
                        <path d="M10 .5a9.5 9.5 0 1 0 9.5 9.5A9.51 9.51 0 0 0 10 .5ZM9.5 4a1.5 1.5 0 1 1 0 3 1.5 1.5 0 0 1 0-3ZM12 15H8a1 1 0 0 1 0-2h1v-3H8a1 1 0 0 1 0-2h2a1 1 0 0 1 1 1v4h1a1 1 0 0 1 0 2Z"/>
                    </svg>
                    <span class="sr-only">{"Info"}</span>
                    <div>
                        <span class="font-medium">{"Error!"}</span> {" "} { &*error }
                    </div>
                    </div>
                }
            </div>
        } else {
            <Config dir={dir_name.clone()} file_name={format!("{}.ovpn", config_name.clone().to_string())} />
        }
        </div>
    }
}

fn switch(routes: Route) -> Html {
    match routes.clone() {
        Route::Home => html! {
        <div>
            <Navbar currrent_route={routes.clone()} />
            <h1>{ "Home" }</h1> <Link<Route> to={Route::Directories}>{ "Directories" }</Link<Route>>
        </div> },
        Route::Directories => html! {
            <div>
                <Navbar currrent_route={routes.clone()} />
                <Directories />
            </div>
        },
        Route::Configs { dir_name } => html! {
            <div>
                <Navbar currrent_route={routes.clone()} currrent_dir={dir_name.clone()} />
                <Configs dir={dir_name.clone()} />
            </div>
        },
        Route::Generate { dir_name } => html! {
            <div>
                <Navbar currrent_route={routes.clone()} currrent_dir={dir_name.clone()} />
                <Generate dir={dir_name.clone()} />
            </div>
        },
        Route::Config {
            dir_name,
            file_name,
        } => html! {
            <div>
                <Navbar currrent_route={routes.clone()} currrent_dir={dir_name.clone()} />
                <Config dir={dir_name.clone()} file_name={file_name.clone()} />
            </div>
        },
        _ => html! {
            <div>
                <Navbar />
                <h1>{ "todo" }</h1>
            </div>
        },
    }
}

#[function_component]
fn App() -> Html {
    html! {
        <BrowserRouter>
        <Switch<Route> render={switch} />
        </BrowserRouter>
    }
}

fn main() {
    yew::Renderer::<App>::new().render();
}