//#![allow(unused_imports)]
//#![allow(dead_code)]
//#![allow(unused_variables)]
// Suppress leptos_router warnings about reactive signal access outside tracking context
#![allow(clippy::redundant_closure)]
//#![allow(unused_assignments)]

//use crate::defs::{NAV_LINK_CLASS, ROUTES};
use crate::auth::AuthProvider;
use crate::components::NavMenu;
use crate::i18n::{I18nProvider, ThemeProvider};
use crate::pages::{AboutPage, DaisyUIPage, FeaturesDemoPage, HomePage, UserPage};
use crate::state::*;
use crate::utils::make_popstate_effect;
use leptos::children::Children;
use leptos::prelude::*;
use leptos_meta::{MetaTags, Title, provide_meta_context};
// use regex::Regex;
use shared::{get_bundle, t};
use std::collections::HashMap;

//// Wrapper component for consistent layout.
#[component]
fn Wrapper(children: Children) -> impl IntoView {
    view! { <>{children()}</> }
}

/// NotFoundPage component for 404s.
#[component]
fn NotFoundPage() -> impl IntoView {
    view! { <div class="text-center">"Page not found."</div> }
}

/// Main app component with SSR path awareness and SPA routing.
#[component]
pub fn App(#[prop(default = String::new())] _initial_path: String) -> impl IntoView {
    provide_meta_context();

    // Always start with HOME during SSR, then route to correct page on client
    let (path, set_path) = signal("/".to_string());
    make_popstate_effect(set_path);

    // Update path from URL after hydration (client-side redirect)
    #[cfg(target_arch = "wasm32")]
    {
        use wasm_bindgen_futures::spawn_local;
        spawn_local(async move {
            if let Some(win) = web_sys::window() {
                let current_path = win
                    .location()
                    .pathname()
                    .unwrap_or_else(|_| "/".to_string());
                // If URL path is different from home, redirect to it
                if current_path != "/" {
                    web_sys::console::log_1(
                        &format!("Client-side redirect to: {}", current_path).into(),
                    );
                    set_path.set(current_path);
                }
            }
        });
    }
    let (lang, _set_lang) = signal("en".to_string());
    // --- Unit test placeholder for route matching ---
    // #[cfg(test)]
    // mod tests {
    //     use super::*;
    //     #[test]
    //     fn test_user_route() {
    //         let re = Regex::new(r"^/user/(\\d+)$").expect("Valid regex");
    //         assert!(re.is_match("/user/42"));
    //     }
    // }
    view! {
        <GlobalStateProvider>
            <ThemeProvider>
                <I18nProvider>
                    <ToastProvider>
                        <AuthProvider>
                            <UserProvider>
                                <AppStateProvider>
                            <Title text="Welcome to Leptos"/>
                            <header class="absolute inset-x-0 top-2 z-90 mx-2">
                                <Wrapper><NavMenu set_path=set_path /></Wrapper>
                            </header>
                            <div class="min-h-screen bg-gray-50 dark:bg-gray-900">
                                <main class="max-w-7xl mx-auto py-6 sm:px-6 lg:px-8">
                                    { let lang = lang.clone(); let path = path.clone();
                                        move || {
                                        let p = path.get();
                                        let lang_val = lang.get();
                                        let bundle = get_bundle(&lang_val).unwrap_or_else(|_| {
                                            // Fallback to a simple bundle if loading fails
                                            use fluent::FluentBundle;
                                            use unic_langid::LanguageIdentifier;
                                            let langid: LanguageIdentifier = "en".parse().unwrap_or_else(|e| {
                                                web_sys::console::error_1(&format!("Failed to parse default language 'en': {:?}", e).into());
                                                // This should never happen, but create a minimal fallback
                                                LanguageIdentifier::from_parts(
                                                    unic_langid::subtags::Language::from_bytes(b"en").unwrap_or_else(|e| {
                                                        web_sys::console::error_1(&format!("Critical error: failed to create 'en' language: {:?}", e).into());
                                                        // Fallback to creating a new language identifier from scratch
                                                        match "en".parse::<unic_langid::subtags::Language>() {
                                                            Ok(lang) => lang,
                                                            Err(_) => {
                                                                // If even this fails, we'll use the default language
                                                                web_sys::console::error_1(&"Using default language as final fallback".into());
                                                                unic_langid::subtags::Language::default()
                                                            }
                                                        }
                                                    }),
                                                    None,
                                                    None,
                                                    &[],
                                                )
                                            });
                                            FluentBundle::new(vec![langid])
                                        });
                                        let content = match p.as_str() {
                                            "/" => t(&bundle, "main-desc", None),
                                            "/about" => t(&bundle, "about-desc", None),
                                            "/user" => "User Dashboard".to_string(),
                                            "/daisyui" => "DaisyUI Components Demo".to_string(),
                                            "/features-demo" => "New Features Demo".to_string(),

                                            _ if p.starts_with("/user/") => {
                                                if let Some(id) = p.strip_prefix("/user/") {
                                                    let mut args = HashMap::new();
                                                    args.insert("id", id);
                                                    t(&bundle, "user-page", Some(&args))
                                                } else {
                                                    t(&bundle, "not-found", None)
                                                }
                                            },
                                            _ => t(&bundle, "not-found", None),
                                        };
                                        view! {
                                            <Wrapper>
                                                <div>{content}</div>
                                                {match p.as_str() {
                                                    "/" => view! { <div><HomePage /></div> }.into_any(),
                                                    "/about" => view! { <div><AboutPage /></div> }.into_any(),
                                                    "/user" => view! { <div><UserPage /></div> }.into_any(),
                                                    "/daisyui" => view! { <div><DaisyUIPage /></div> }.into_any(),
                                                    "/features-demo" => view! { <div><FeaturesDemoPage /></div> }.into_any(),

                                                    _ => view! { <div>Not found</div> }.into_any(),
                                                }}
                                            </Wrapper>
                                        }
                                    }}
                                </main>
                            </div>
                                </AppStateProvider>
                            </UserProvider>
                        </AuthProvider>
                    </ToastProvider>
                </I18nProvider>
            </ThemeProvider>
        </GlobalStateProvider>
    }
}

/// The SSR shell for Leptos/Axum integration.
pub fn shell(options: LeptosOptions) -> impl IntoView {
    shell_with_path(options, None)
}

/// The SSR shell for Leptos/Axum integration with path support.
pub fn shell_with_path(options: LeptosOptions, path: Option<String>) -> 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/>
                <link rel="stylesheet" id="leptos" href="/public/website.css"/>
                <link rel="shortcut icon" type="image/ico" href="/favicon.ico"/>
                <MetaTags/>
            </head>
            <body>
                <App _initial_path=path.unwrap_or_default() />
            </body>
        </html>
    }
}