/*
    This file is part of jellything (https://codeberg.org/metamuffin/jellything)
    which is licensed under the GNU Affero General Public License (version 3); see /COPYING.
    Copyright (C) 2023 metamuffin <metamuffin.org>
*/
use super::{
    account::session::Session,
    error::MyError,
    layout::DynLayoutPage,
    node::NodeCard,
    sort::{filter_and_sort_nodes, NodeFilterSort, NodeFilterSortForm},
};
use crate::{database::Database, uri};
use anyhow::Context;
use jellycommon::{user::NodeUserData, NodePublic};
use rocket::{get, State};

/// This function is a stub and only useful for use in the uri! macro.
#[get("/items")]
pub fn r_all_items() {}

#[get("/items?<page>&<filter..>")]
pub fn r_all_items_filter(
    sess: Session,
    db: &State<Database>,
    page: Option<usize>,
    filter: NodeFilterSort,
) -> Result<DynLayoutPage<'_>, MyError> {
    let mut items = db
        .node
        .iter()
        .map(|e| {
            let (i, n) = e.context("listing")?;
            let u = db
                .user_node
                .get(&(sess.user.name.clone(), i.clone()))?
                .unwrap_or_default();
            Ok((i, n, u))
        })
        .collect::<anyhow::Result<Vec<_>>>()?
        .into_iter()
        .map(|(k, n, u)| (k, n.public, u))
        .collect::<Vec<(String, NodePublic, NodeUserData)>>();

    filter_and_sort_nodes(&filter, &mut items);

    let page_size = 100;
    let page = page.unwrap_or(0);
    let offset = page * page_size;
    let from = offset.min(items.len());
    let to = (offset + page_size).min(items.len());
    let max_page = items.len().div_ceil(page_size);

    Ok(super::layout::LayoutPage {
        title: "All Items".to_owned(),
        content: markup::new! {
            .page.dir {
                h1 { "All Items" }
                @NodeFilterSortForm { f: &filter }
                ul.children { @for (id, node, udata) in &items[from..to] {
                    li {@NodeCard { id, node, udata }}
                }}
                p.pagecontrols {
                    span.current { "Page " @{page + 1} " of " @max_page " " }
                    @if page > 0 {
                        a.prev[href=uri!(r_all_items_filter(Some(page - 1), filter.clone()))] { "Previous page" } " "
                    }
                    @if page + 1 < max_page {
                        a.next[href=uri!(r_all_items_filter(Some(page + 1), filter.clone()))] { "Next page" }
                    }
                }
            }
        },
        ..Default::default()
    })
}