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use leptos::prelude::*;
use leptos::Params;
use leptos_router::hooks::use_params;
use leptos_router::hooks::use_query;
use leptos_router::params::Params;
use leptos_meta::{provide_meta_context, MetaTags, Stylesheet, Title};
use leptos_router::{
    components::{ParentRoute, Route, Router, Routes}, path
};

use crate::components::layout::Layout;
use super::renderer::WikiPage;
use super::editor::WikiEditor;

pub fn shell(options: LeptosOptions) -> impl IntoView {
    view! {
        <!DOCTYPE html>
        <html lang="en">
            <head>
                <meta charset="utf-8"/>
                <meta name="viewport" content="width=device-width, initial-scale=1"/>
                <AutoReload options=options.clone() />
                <HydrationScripts options islands=true/>
                <MetaTags/>
            </head>
            <body>
                <App/>
            </body>
        </html>
    }
}

#[component]
pub fn App() -> impl IntoView {
    // Provides context that manages stylesheets, titles, meta tags, etc.
    provide_meta_context();

    view! {
        // injects a stylesheet into the document <head>
        // id=leptos means cargo-leptos will hot-reload this stylesheet
        <Stylesheet id="leptos" href="/_/stormscribe.css"/>

        // sets the document title
        <Title text="Welcome to Leptos"/>

        // content for this welcome page
        <Router>
            <Routes fallback=|| "Page not found.".into_view()>
                <ParentRoute path=path!("/") view=Layout>
                    <Route path=path!("/~/*path") view=PageRender/>
                    <Route path=path!("/edit/*path") view=PageEdit/>
                </ParentRoute>
            </Routes>
        </Router>
    }
}

#[derive(Params, PartialEq)]
struct PageParams {
    path: Option<String>
}

// Renders a page
#[component]
fn PageRender() -> impl IntoView {
    let params = use_params::<PageParams>();

    let page_path = params.read()
        .as_ref()
        .ok()
        .map(|params| params.path.clone()
             .unwrap_or("Unknown path".to_string()))
        .unwrap_or("Could not read params".to_string());

    view! {
        <WikiPage url_path=page_path />
    }.into_any()
}

// Renders a page
#[component]
fn PageEdit() -> impl IntoView {
    let params = use_params::<PageParams>();

    let page_path = params.read()
        .as_ref()
        .ok()
        .map(|params| params.path.clone()
             .unwrap_or("Unknown path".to_string()))
        .unwrap_or("Could not read params".to_string());

    view! {
        <WikiEditor url_path=page_path />
    }
}