// Admin dashboard: all lists, their order, create/edit/delete.
import { h, icon, api, readBoot, toast, confirmDialog, fmt } from "./common.js";
import { sortable } from "./sortable.js";
import { openListForm } from "./list-form.js";

const boot = readBoot();
const { categories, limits } = boot;
const covers = boot.covers || {};
const catByKey = Object.fromEntries(categories.map((c) => [c.key, c]));
let lists = boot.lists;

const root = document.getElementById("lists");

function newList(category) {
  openListForm({
    categories, limits, category,
    onSaved: (l) => { location.href = `/admin/lists/${l.id}`; },
  });
}

function editList(list) {
  openListForm({
    categories, limits, list,
    onSaved: (saved) => {
      lists = lists.map((l) => (l.id === saved.id ? saved : l));
      render();
      toast("List saved");
    },
  });
}

async function deleteList(list) {
  const entries = list.itemCount ? ` Its ${fmt.format(list.itemCount)} ${list.itemCount === 1 ? "entry" : "entries"} will be removed.` : "";
  const ok = await confirmDialog({
    title: "Delete list?",
    message: `“${list.title}” will be deleted.${entries} This can't be undone.`,
    confirm: "Delete list",
    danger: true,
  });
  if (!ok) return;
  try {
    await api("DELETE", `/api/lists/${list.id}`);
    lists = lists.filter((l) => l.id !== list.id);
    render();
    toast("List deleted");
  } catch (err) {
    toast(err.message, { error: true });
  }
}

function card(list) {
  const cat = catByKey[list.category];
  const pct = Math.min(100, Math.round((list.itemCount / list.maxItems) * 100));
  const imgs = covers[list.id] || [];
  const art = imgs.length
    ? h("span", { class: "list-card-covers" + ((list.art || cat.aspect) === "square" ? " is-square" : "") },
      imgs.map((src) => h("span", { style: { backgroundImage: `url("${src}")` } })))
    : h("span", { class: "shelf-icon" }, icon(cat.icon));
  return h("li", { class: "list-card", "data-id": list.id },
    h("button", { type: "button", class: "drag-handle", "aria-label": `Reorder ${list.title}. Use arrow keys to move.` }, icon("grip")),
    h("a", { class: "list-card-main", href: `/admin/lists/${list.id}` },
      art,
      h("span", { style: { minWidth: 0 } },
        h("span", { class: "list-card-title" }, list.title),
        h("span", { class: "list-card-meta" },
          h("span", {}, cat.label),
          h("span", { "aria-hidden": "true" }, "·"),
          h("span", {}, `${fmt.format(list.itemCount)} / ${fmt.format(list.maxItems)}`),
          h("span", { class: "list-card-bar", "aria-hidden": "true" }, h("span", { style: { width: pct + "%" } })),
          !list.visible && h("span", { class: "badge badge--muted" }, icon("eye-off"), "Hidden"),
        ),
      ),
    ),
    h("div", { class: "list-card-actions" },
      h("a", { class: "icon-btn", href: `/l/${list.slug}`, title: "View public page", "aria-label": "View public page" }, icon("external")),
      h("button", { type: "button", class: "icon-btn", title: "List settings", "aria-label": "List settings", onclick: () => editList(list) }, icon("settings")),
      h("button", { type: "button", class: "icon-btn icon-btn--danger", title: "Delete", "aria-label": "Delete list", onclick: () => deleteList(list) }, icon("trash")),
    ),
  );
}

function render() {
  if (!lists.length) {
    root.replaceChildren(h("div", { class: "onboard" },
      h("div", { class: "empty-art", style: { margin: "0 auto 16px" } }, icon("deck")),
      h("h2", {}, "Start your first list"),
      h("p", {}, "Pick a category. You'll choose how many spots it has next."),
      h("div", { class: "quick-cats" },
        categories.map((c) => h("button", { type: "button", onclick: () => newList(c.key) }, icon(c.icon), c.label))),
    ));
    return;
  }
  const ul = h("ul", { class: "admin-lists", style: { listStyle: "none", margin: 0, padding: 0 } }, lists.map(card));
  sortable(ul, {
    onMove: async () => {
      const ids = [...ul.children].map((li) => Number(li.dataset.id));
      lists = ids.map((id) => lists.find((l) => l.id === id));
      try {
        await api("POST", "/api/lists/order", { ids });
        toast("Order saved");
      } catch (err) {
        toast(err.message, { error: true });
      }
    },
  });
  root.replaceChildren(ul);
}

document.querySelector("[data-action=new-list]").addEventListener("click", () => newList());
render();