---
/**
 * The `Sidebar` slot (also the mobile drawer's nav, which defaults to it): a
 * Fumadocs-style content-source selector, then the pinned links, then
 * Blume's own nav tree scoped to the active source (`sources.ts`).
 *
 * The pinned links live here, not in `navigation.featured`: Blume renders
 * featured links above this slot, so the selector could not sit over them.
 *
 * The selector is a `<details>` with Blume's `data-blume-dropdown` light
 * dismiss (outside press, Escape, focus leaving), like its own NavSelector.
 */
import Icon from "blume/components/Icon.astro";
import { withBase, withMountedBase } from "blume/components/islands/base-path.ts";
import NavTree from "blume/components/layout/NavTree.astro";
import type { UIStrings } from "blume/core/i18n-ui.ts";
import { isUnderPath } from "blume/core/navigation.ts";
import type { NavNode } from "blume/core/types.ts";
import { SOURCES } from "../sources.ts";

interface Props {
  items: NavNode[];
  currentRoute: string;
  strings?: UIStrings["nav"];
  ids?: Map<NavNode, string>;
  fragmentBase?: string;
}

const PINNED = [
  { label: "Changelog", href: "/changelog", icon: "clock" },
  { label: "Appendix", href: "/appendix", icon: "library" },
];

const { items, currentRoute, ...tree } = Astro.props;

const active =
  SOURCES.filter((s) => isUnderPath(currentRoute, s.path)).sort(
    (a, b) => b.path.length - a.path.length,
  )[0] ?? SOURCES[0]!;

const claims = (node: NavNode, path: string) => {
  const at = node.kind === "page" ? node.route : node.path;
  return at !== undefined && isUnderPath(at, path);
};

// The root source keeps every node no other source claims; any other source
// shows its folder's children, as if that folder were the content root.
const scoped =
  active.path === "/"
    ? items.filter(
        (node) => !SOURCES.some((s) => s.path !== "/" && claims(node, s.path)),
      )
    : items.flatMap((node) =>
        node.kind === "group" && node.path === active.path ? node.children : [],
      );
---

<details class="group relative mb-3" data-blume-dropdown>
  <summary
    aria-label={`Content source: ${active.label}`}
    class="flex w-full cursor-pointer list-none items-center gap-2.5 rounded-xl border border-border bg-muted/50 p-1.5 pe-2.5 text-foreground text-sm transition-colors hover:bg-muted group-open:bg-muted [&::-webkit-details-marker]:hidden"
  >
    <span class="flex size-7 shrink-0 items-center justify-center rounded-lg border border-border bg-background">
      <Icon name={active.icon} size={15} />
    </span>
    <span class="min-w-0 flex-1 truncate font-medium">{active.label}</span>
    <Icon class="shrink-0 text-muted-foreground" name="chevrons-up-down" size={14} />
  </summary>
  <div
    class="absolute inset-x-0 z-50 mt-1.5 rounded-xl border border-border bg-background p-1 shadow-xl"
    data-blume-dropdown-panel
  >
    {
      SOURCES.map((source) => (
        <a
          aria-current={source === active ? "true" : undefined}
          class="flex items-start gap-2.5 rounded-lg p-2 text-muted-foreground text-sm transition-colors hover:bg-muted hover:text-foreground aria-[current=true]:text-foreground"
          href={withMountedBase(source.path)}
        >
          <Icon class="mt-0.5 shrink-0" name={source.icon} size={16} />
          <span class="min-w-0 flex-1">
            <span class="block font-medium">{source.label}</span>
            <span class="block text-muted-foreground text-xs">{source.description}</span>
          </span>
          {source === active && <Icon class="mt-0.5 shrink-0" name="check" size={14} />}
        </a>
      ))
    }
  </div>
</details>

<nav aria-label="Featured" class="mb-4 border-border border-b pb-4">
  <ul class="m-0 list-none p-0">
    {
      PINNED.map((link) => (
        <li>
          <a
            aria-current={currentRoute === link.href ? "page" : undefined}
            class="flex items-center gap-2 rounded-[0.65rem] px-2.5 py-1.5 text-muted-foreground text-sm transition-colors hover:bg-muted hover:text-foreground aria-[current=page]:bg-muted aria-[current=page]:text-foreground"
            href={withBase(link.href)}
          >
            <Icon class="shrink-0" name={link.icon} size={14} />
            <span class="flex-1 truncate">{link.label}</span>
          </a>
        </li>
      ))
    }
  </ul>
</nav>

<NavTree {...tree} currentRoute={currentRoute} items={scoped} />

<script>
  import { installDropdownDismiss } from "blume/components/dropdown-dismiss.ts";

  installDropdownDismiss();
</script>