import { usePage } from '@inertiajs/react';
import type { Icon } from '@tabler/icons-react';
import { IconGridDots, IconHelp, IconMessageDots } from '@tabler/icons-react';
import {
    BookOpen,
    Building2,
    Calendar,
    CalendarClock,
    ClipboardCheck,
    ClipboardList,
    FileCheck2,
    FileText,
    GraduationCap,
    Mail,
    Megaphone,
    MessageCircle,
    Receipt,
    School,
    ScrollText,
    ShieldCheck,
    User,
    Users,
} from 'lucide-react';
import * as React from 'react';

import AppLogoIcon from '@/components/app-logo-icon';
import type { NavGroup, NavItem } from '@/components/nav-main';
import { NavMain } from '@/components/nav-main';
import { NavSecondary } from '@/components/nav-secondary';
import {
    Sidebar,
    SidebarContent,
    SidebarHeader,
    SidebarMenu,
    SidebarMenuButton,
    SidebarMenuItem,
} from '@/components/ui/sidebar';
import { index as assignmentsRoute } from '@/routes/admin/academic-classes/assignments';
import { index as attendancesRoute } from '@/routes/admin/academic-classes/attendances';
import { index as materialsRoute } from '@/routes/admin/academic-classes/materials';
import { index as schedulesRoute } from '@/routes/admin/academic-classes/schedules';
import { index as logsRoute } from '@/routes/admin/developer/logs';
import { index as rolePermissionsRoute } from '@/routes/admin/developer/roles';
import { index as feedbackRoute } from '@/routes/admin/feedback';
import { index as tuitionInvoicesRoute } from '@/routes/admin/finances/tuition-invoices';
import { index as announcementsRoute } from '@/routes/admin/manage/announcements';
import { index as courseClassesRoute } from '@/routes/admin/manage/course-classes';
import { index as courseRegistrationsRoute } from '@/routes/admin/manage/course-registrations';
import { index as academicTerm } from '@/routes/admin/master/academic-terms';
import { index as coursesRoute } from '@/routes/admin/master/courses';
import { index as departmentsRoute } from '@/routes/admin/master/departments';
import { index as academicAdvisingLogsRoute } from '@/routes/admin/services/academic-advising-logs';
import { index as letterRequestsRoute } from '@/routes/admin/services/letter-requests';
import { index as administratorsRoute } from '@/routes/admin/users/administrators';
import { index as lecturersRoute } from '@/routes/admin/users/lecturers';
import { index as studentsRoute } from '@/routes/admin/users/students';
import { index as studentCourseRegistrationsRoute } from '@/routes/student/course-registrations';
import type { Auth } from '@/types/auth';

const STAFF_ROLES = ['developer', 'staff-admin', 'staff-keuangan', 'kaprodi'];

function buildNavMain({
    isMahasiswa,
    permissions,
}: {
    isMahasiswa: boolean;
    permissions: string[];
}): (NavGroup | NavItem)[] {
    const can = (permission: string) => permissions.includes(permission);

    const penggunaItems: NavItem[] = [
        ...(can('view-administrators')
            ? [
                  {
                      name: 'Administrator',
                      url: administratorsRoute.url(),
                      icon: User,
                  },
              ]
            : []),
        ...(can('view-lecturers')
            ? [{ name: 'Dosen', url: lecturersRoute.url(), icon: Users }]
            : []),
        ...(can('view-students')
            ? [
                  {
                      name: 'Mahasiswa',
                      url: studentsRoute.url(),
                      icon: GraduationCap,
                  },
              ]
            : []),
    ];

    const masterItems: NavItem[] = [
        ...(can('view-academic-terms')
            ? [
                  {
                      name: 'Periode Akademik',
                      url: academicTerm.url(),
                      icon: Calendar,
                  },
              ]
            : []),
        ...(can('view-departments')
            ? [
                  {
                      name: 'Jurusan',
                      url: departmentsRoute.url(),
                      icon: Building2,
                  },
              ]
            : []),
        ...(can('view-courses')
            ? [{ name: 'Mata Kuliah', url: coursesRoute.url(), icon: BookOpen }]
            : []),
    ];

    const kelolaItems: NavItem[] = [
        ...(isMahasiswa || can('view-course-registrations')
            ? [
                  {
                      name: 'Registrasi KRS',
                      url: isMahasiswa
                          ? studentCourseRegistrationsRoute.url()
                          : courseRegistrationsRoute.url(),
                      icon: FileCheck2,
                  },
              ]
            : []),
        ...(can('view-course-classes')
            ? [
                  {
                      name: 'Kelas Mata Kuliah',
                      url: courseClassesRoute.url(),
                      icon: School,
                  },
              ]
            : []),
        ...(can('view-announcements')
            ? [
                  {
                      name: 'Pengumuman',
                      url: announcementsRoute.url(),
                      icon: Megaphone,
                  },
              ]
            : []),
    ];

    const kelasItems: NavItem[] = [
        ...(can('view-materials')
            ? [{ name: 'Materi', url: materialsRoute.url(), icon: FileText }]
            : []),
        ...(can('view-assignments')
            ? [
                  {
                      name: 'Tugas',
                      url: assignmentsRoute.url(),
                      icon: ClipboardList,
                  },
              ]
            : []),
        ...(can('view-schedules')
            ? [
                  {
                      name: 'Jadwal',
                      url: schedulesRoute.url(),
                      icon: CalendarClock,
                  },
              ]
            : []),
        ...(can('view-attendances')
            ? [
                  {
                      name: 'Kehadiran',
                      url: attendancesRoute.url(),
                      icon: ClipboardCheck,
                  },
              ]
            : []),
    ];

    const keuanganItems: NavItem[] = [
        ...(can('view-tuition-invoices')
            ? [
                  {
                      name: 'Tagihan',
                      url: tuitionInvoicesRoute.url(),
                      icon: Receipt,
                  },
              ]
            : []),
    ];

    const layananItems: NavItem[] = [
        ...(can('view-letter-requests')
            ? [
                  {
                      name: 'Surat Permohonan',
                      url: letterRequestsRoute.url(),
                      icon: Mail,
                  },
              ]
            : []),
        ...(can('view-academic-advising-logs')
            ? [
                  {
                      name: 'Bimbingan Akademik',
                      url: academicAdvisingLogsRoute.url(),
                      icon: MessageCircle,
                  },
              ]
            : []),
    ];

    const pengembangItems: NavItem[] = [
        ...(can('view-logs')
            ? [{ name: 'Logs', url: logsRoute.url(), icon: ScrollText }]
            : []),
        ...(can('view-roles')
            ? [
                  {
                      name: 'Role & Permission',
                      url: rolePermissionsRoute.url(),
                      icon: ShieldCheck,
                  },
              ]
            : []),
    ];

    const groups: (NavGroup | NavItem)[] = [
        {
            name: 'Dasbor',
            url: '#',
            icon: IconGridDots,
        },
    ];

    if (penggunaItems.length > 0) {
        groups.push({ label: 'Pengguna', items: penggunaItems });
    }

    if (masterItems.length > 0) {
        groups.push({ label: 'Master', items: masterItems });
    }

    if (kelolaItems.length > 0) {
        groups.push({ label: 'Kelola', items: kelolaItems });
    }

    if (kelasItems.length > 0) {
        groups.push({ label: 'Kelas', items: kelasItems });
    }

    if (keuanganItems.length > 0) {
        groups.push({ label: 'Keuangan', items: keuanganItems });
    }

    if (layananItems.length > 0) {
        groups.push({ label: 'Layanan', items: layananItems });
    }

    if (pengembangItems.length > 0) {
        groups.push({ label: 'Pengembang', items: pengembangItems });
    }

    return groups;
}

function buildNavSecondary(
    pendingFeedbackCount: number,
): { title: string; url: string; icon: Icon; badge?: number }[] {
    return [
        {
            title: 'Kritik dan Saran',
            url: feedbackRoute.url(),
            icon: IconMessageDots,
            badge: pendingFeedbackCount,
        },
        {
            title: 'Bantuan',
            url: '#',
            icon: IconHelp,
        },
    ];
}

export function AppSidebar({ ...props }: React.ComponentProps<typeof Sidebar>) {
    const { name, auth, pendingFeedbackCount } = usePage<{ auth: Auth }>()
        .props;
    const roleNames = auth?.user?.roles?.map((role) => role.name) ?? [];
    const isStaff = roleNames.some((role) => STAFF_ROLES.includes(role));
    const isMahasiswa = !isStaff && roleNames.includes('mahasiswa');
    const permissions = auth?.permissions ?? [];
    const navMain = buildNavMain({
        isMahasiswa,
        permissions,
    });

    return (
        <Sidebar collapsible="icon" {...props}>
            <SidebarHeader>
                <SidebarMenu>
                    <SidebarMenuItem>
                        <SidebarMenuButton
                            asChild
                            className="data-[slot=sidebar-menu-button]:p-1.5!"
                        >
                            <a href="#">
                                <AppLogoIcon className="size-5! rounded-sm object-cover" />
                                <span className="text-base font-semibold">
                                    {name}
                                </span>
                            </a>
                        </SidebarMenuButton>
                    </SidebarMenuItem>
                </SidebarMenu>
            </SidebarHeader>
            <SidebarContent>
                <NavMain items={navMain} />
                <NavSecondary
                    items={buildNavSecondary(pendingFeedbackCount ?? 0)}
                    className="mt-auto"
                />
            </SidebarContent>
        </Sidebar>
    );
}