use dioxus::prelude::*;

use crate::api;
use crate::app::{Lang, Route};
use crate::components::table_controls::*;
use crate::i18n::{pick_name, t};

const STORAGE_KEY_COLS: &str = "herbapi_families_cols";
const STORAGE_KEY_PP: &str = "herbapi_families_pp";

fn family_columns() -> Vec<ColumnDef> {
    vec![
        ColumnDef { key: "name_scientific", label: "Scientific Name", default_visible: true },
        ColumnDef { key: "common_name", label: "Common Name", default_visible: true },
        ColumnDef { key: "name_en", label: "English", default_visible: false },
        ColumnDef { key: "name_de", label: "German", default_visible: false },
        ColumnDef { key: "description", label: "Description", default_visible: false },
    ]
}

#[component]
pub fn FamilyList() -> Element {
    let lang = use_context::<Lang>().0;
    let columns = family_columns();
    let mut page = use_signal(|| 1i64);
    let per_page = use_signal(|| load_per_page(STORAGE_KEY_PP, 25));
    let mut search = use_signal(|| String::new());
    let visible_cols = use_signal(|| load_visible_columns(STORAGE_KEY_COLS, &family_columns()));

    let families = use_resource(move || {
        let s = search.read().clone();
        let p = *page.read();
        let pp = *per_page.read();
        async move {
            let q = if s.is_empty() { None } else { Some(s.as_str()) };
            api::list_families(p, pp, q).await
        }
    });

    let current_page = *page.read();
    let l = lang.read().clone();

    rsx! {
        div { class: "page",
            h1 { "{t(&l, \"page.families\")}" }

            div { class: "table-toolbar",
                div { class: "search-bar",
                    input {
                        r#type: "text",
                        placeholder: "{t(&l, \"search.placeholder_families\")}",
                        value: "{search}",
                        oninput: move |e| {
                            search.set(e.value());
                            page.set(1);
                        },
                    }
                }
                PerPageSelector {
                    per_page: per_page,
                    page: page,
                    storage_key: STORAGE_KEY_PP.to_string(),
                }
            }

            ColumnToggle {
                columns: columns.clone(),
                visible: visible_cols,
                storage_key: STORAGE_KEY_COLS.to_string(),
            }

            match &*families.read() {
                None => rsx! { p { "{t(&l, \"loading\")}" } },
                Some(Err(e)) => rsx! { p { class: "error", "Error: {e}" } },
                Some(Ok(data)) => {
                    let vis = visible_cols.read();
                    rsx! {
                        p { class: "result-count", "{data.total} {t(&l, \"nav.families\").to_lowercase()}" }
                        div { class: "table-wrap",
                            table {
                                thead {
                                    tr {
                                        if is_col_visible(&vis, "name_scientific") {
                                            th { "{t(&l, \"field.scientific_name\")}" }
                                        }
                                        if is_col_visible(&vis, "common_name") {
                                            th { "{t(&l, \"field.common_name\")}" }
                                        }
                                        if is_col_visible(&vis, "name_en") {
                                            th { "{t(&l, \"field.name_en\")}" }
                                        }
                                        if is_col_visible(&vis, "name_de") {
                                            th { "{t(&l, \"field.name_de\")}" }
                                        }
                                        if is_col_visible(&vis, "description") {
                                            th { "{t(&l, \"field.description\")}" }
                                        }
                                    }
                                }
                                tbody {
                                    for f in data.data.iter() {
                                        {
                                            let common = pick_name(&lang.read(), &f.name_de, &f.name_en, &f.name_scientific);
                                            rsx! {
                                                tr {
                                                    if is_col_visible(&vis, "name_scientific") {
                                                        td {
                                                            Link { to: Route::FamilyDetail { slug: f.slug.clone() },
                                                                em { "{f.name_scientific}" }
                                                            }
                                                        }
                                                    }
                                                    if is_col_visible(&vis, "common_name") {
                                                        td { "{common}" }
                                                    }
                                                    if is_col_visible(&vis, "name_en") {
                                                        td { "{f.name_en.as_deref().unwrap_or(\"-\")}" }
                                                    }
                                                    if is_col_visible(&vis, "name_de") {
                                                        td { "{f.name_de.as_deref().unwrap_or(\"-\")}" }
                                                    }
                                                    if is_col_visible(&vis, "description") {
                                                        td { class: "cell-truncated",
                                                            "{f.description.as_deref().map(|d| truncate(d, 80)).unwrap_or_else(|| \"-\".to_string())}"
                                                        }
                                                    }
                                                }
                                            }
                                        }
                                    }
                                }
                            }
                        }
                        if data.total > data.per_page {
                            div { class: "pagination",
                                button {
                                    disabled: current_page <= 1,
                                    onclick: move |_| page.set(current_page - 1),
                                    "{t(&l, \"btn.previous\")}"
                                }
                                span { "{t(&l, \"page\")} {current_page} {t(&l, \"of\")} {(data.total + data.per_page - 1) / data.per_page}" }
                                button {
                                    disabled: current_page * data.per_page >= data.total,
                                    onclick: move |_| page.set(current_page + 1),
                                    "{t(&l, \"btn.next\")}"
                                }
                            }
                        }
                    }
                },
            }
        }
    }
}

#[component]
pub fn FamilyDetail(slug: String) -> Element {
    let lang = use_context::<Lang>().0;
    let slug_clone = slug.clone();
    let family = use_resource(move || {
        let s = slug_clone.clone();
        async move { api::get_family(&s).await }
    });

    let slug_for_species = slug.clone();
    let species = use_resource(move || {
        let s = slug_for_species.clone();
        async move { api::list_species(1, 100, Some(&s), None).await }
    });

    let l = lang.read().clone();

    rsx! {
        div { class: "page",
            match &*family.read() {
                None => rsx! { p { "{t(&l, \"loading\")}" } },
                Some(Err(e)) => rsx! { p { class: "error", "Error: {e}" } },
                Some(Ok(f)) => {
                    let common = pick_name(&lang.read(), &f.name_de, &f.name_en, &f.name_scientific);
                    rsx! {
                        h1 { em { "{f.name_scientific}" } }
                        if common != f.name_scientific {
                            p { class: "name-common", "{common}" }
                        }
                        if let Some(ref desc) = f.description {
                            p { "{desc}" }
                        }
                    }
                },
            }

            h2 { "{t(&l, \"page.species_in_family\")}" }
            match &*species.read() {
                None => rsx! { p { "{t(&l, \"loading\")}" } },
                Some(Err(e)) => rsx! { p { class: "error", "Error: {e}" } },
                Some(Ok(data)) => rsx! {
                    div { class: "card-grid",
                        for s in data.data.iter() {
                            {
                                let sp_common = pick_name(&lang.read(), &s.name_de, &s.name_en, &s.name_scientific);
                                let show_common = if sp_common == s.name_scientific { None } else { Some(sp_common) };
                                rsx! {
                                    div { class: "plant-card",
                                        Link { to: Route::SpeciesDetail { slug: s.slug.clone() },
                                            em { "{s.name_scientific}" }
                                        }
                                        if let Some(ref common) = show_common {
                                            p { class: "card-common", "{common}" }
                                        }
                                    }
                                }
                            }
                        }
                    }
                },
            }
        }
    }
}