<script lang="ts">
  import { page } from "$app/stores";
  import "../../styles/admin.css";

  import type { PermissionMap } from "$lib/permissions";

  export let data: {
    user: {
      id: string;
      name?: string;
      email?: string;
      [key: string]: unknown;
    } | null;
    permissions: PermissionMap;
  };

  $: permissions = data.permissions;
  $: userName = data.user?.name || "Admin";

  // Tab definitions — each gated by a permission
  const allTabs = [
    { label: "Overview", href: "/admin", exact: true, permission: null },
    {
      label: "Users",
      href: "/admin/users",
      exact: false,
      permission: "admin.users.view",
    },
    {
      label: "Roles",
      href: "/admin/roles",
      exact: false,
      permission: "admin.roles.view",
    },
    {
      label: "Credential Types",
      href: "/admin/credential-types",
      exact: false,
      permission: "admin.credential-types.view",
    },
    {
      label: "Reports",
      href: "/admin/reports",
      exact: false,
      permission: "ui.navigation.reports.view",
    },
  ] as const;

  // Only show tabs the user has permission for
  $: visibleTabs = allTabs.filter(
    (t) => t.permission === null || permissions[t.permission] === true,
  );

  function isActive(
    tab: { href: string; exact?: boolean },
    pathname: string,
  ): boolean {
    if (tab.exact) return pathname === tab.href;
    return pathname.startsWith(tab.href);
  }
</script>

<svelte:head>
  <title>Admin — Project Optima</title>
</svelte:head>

<div class="admin-page">
  <div class="admin-pane">
    <!-- Pane header -->
    <div class="admin-header">
      <div class="admin-header-left">
        <svg
          class="admin-header-icon"
          viewBox="0 0 24 24"
          fill="none"
          stroke="currentColor"
          stroke-width="2"
          stroke-linecap="round"
          stroke-linejoin="round"
        >
          <circle cx="12" cy="12" r="3" />
          <path
            d="M19.4 15a1.65 1.65 0 0 0 .33 1.82l.06.06a2 2 0 0 1-2.83 2.83l-.06-.06a1.65 1.65 0 0 0-1.82-.33 1.65 1.65 0 0 0-1 1.51V21a2 2 0 0 1-4 0v-.09A1.65 1.65 0 0 0 9 19.4a1.65 1.65 0 0 0-1.82.33l-.06.06a2 2 0 0 1-2.83-2.83l.06-.06A1.65 1.65 0 0 0 4.68 15a1.65 1.65 0 0 0-1.51-1H3a2 2 0 0 1 0-4h.09A1.65 1.65 0 0 0 4.6 9a1.65 1.65 0 0 0-.33-1.82l-.06-.06a2 2 0 0 1 2.83-2.83l.06.06A1.65 1.65 0 0 0 9 4.68a1.65 1.65 0 0 0 1-1.51V3a2 2 0 0 1 4 0v.09a1.65 1.65 0 0 0 1 1.51 1.65 1.65 0 0 0 1.82-.33l.06-.06a2 2 0 0 1 2.83 2.83l-.06.06A1.65 1.65 0 0 0 19.4 9a1.65 1.65 0 0 0 1.51 1H21a2 2 0 0 1 0 4h-.09a1.65 1.65 0 0 0-1.51 1z"
          />
        </svg>
        <h2 class="admin-title">Administration</h2>
        <span class="admin-subtitle">Welcome back, {userName}</span>
      </div>
    </div>

    <!-- Tab bar -->
    <div class="tab-bar" role="tablist">
      {#each visibleTabs as tab}
        <a
          href={tab.href}
          class="tab-btn"
          class:active={isActive(tab, $page.url.pathname)}
          role="tab"
          aria-selected={isActive(tab, $page.url.pathname)}
        >
          {tab.label}
        </a>
      {/each}
    </div>

    <!-- Tab content -->
    <div class="admin-body">
      <slot />
    </div>
  </div>
</div>
