<?php

namespace App\Http\Controllers\Dashboard;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use Illuminate\Support\Carbon;
use Illuminate\Support\Facades\DB;
use Illuminate\View\View;

class MahasiswaDashboardController extends Controller
{
    public function __invoke(Request $request): View
    {
        $auth = $request->session()->get('legacy_auth');

        abort_unless(($auth['role'] ?? null) === 'mahasiswa', 403);

        $user = $auth['user'];

        $latestPraoutline = DB::table('tbpraoutline as tp')
            ->leftJoin('tbrekaphasil as trh', 'tp.id', '=', 'trh.idpraoutline')
            ->select(['tp.id', 'tp.judul', 'tp.status_usulan', 'trh.ket'])
            ->where('tp.nim', $user['nim'])
            ->where('tp.idProdi', $user['prodi'])
            ->orderByDesc('tp.id')
            ->first();

        $unreadAnnouncements = DB::table('tbpengumuman')
            ->where('idProdi', $user['prodi'])
            ->whereIn('tujuan', ['A', 'M'])
            ->whereNotIn('id', function ($query) use ($user) {
                $query->select('idkonten')
                    ->from('tmp_notif')
                    ->where('iduser', $user['id'])
                    ->where('typeuser', 'M')
                    ->where('jenis', 'P');
            })
            ->count();

        $publishedSchedules = DB::table('tbjadwal')
            ->where('idProdi', $user['prodi'])
            ->where('publish', 'Y')
            ->count();

        $nextSchedule = DB::table('tbjadwal')
            ->select(['jenis', 'start', 'ruangan'])
            ->where('idMhs', $user['id'])
            ->where('publish', 'Y')
            ->whereNotNull('start')
            ->orderBy('start')
            ->first();

        $activeDrafts = DB::table('tbpraoutline')
            ->where('nim', $user['nim'])
            ->whereIn('status_usulan', ['0', '1'])
            ->count();

        $statusAlert = match ($latestPraoutline?->status_usulan) {
            '0' => [
                'title' => 'Draft Praoutline Masih Dalam Proses Review',
                'description' => 'Silakan cek menu review untuk melihat tanggapan dosen terhadap draft yang sedang berjalan.',
                'button' => 'Lihat Review',
                'buttonHref' => route('mahasiswa.status-usulan', [], false),
                'class' => 'border-sky-200 bg-sky-50 text-sky-900',
                'buttonClass' => 'bg-sky-600 text-white hover:opacity-90',
            ],
            '1' => [
                'title' => 'Draft Praoutline Anda Telah Disetujui',
                'description' => 'Judul terakhir sudah memperoleh persetujuan. Silakan pantau tahapan berikutnya pada modul yang terkait.',
                'button' => 'Lihat Putusan',
                'buttonHref' => route('mahasiswa.status-usulan', [], false),
                'class' => 'border-emerald-200 bg-emerald-50 text-emerald-900',
                'buttonClass' => 'bg-emerald-600 text-white hover:opacity-90',
            ],
            '2' => [
                'title' => 'Judul yang Anda Ajukan Tidak Disetujui',
                'description' => $latestPraoutline?->ket ?: 'Silakan periksa catatan keputusan dan siapkan upload judul baru.',
                'button' => 'Lihat Catatan Putusan',
                'buttonHref' => route('mahasiswa.status-usulan', [], false),
                'class' => 'border-rose-200 bg-rose-50 text-rose-900',
                'buttonClass' => 'bg-rose-600 text-white hover:opacity-90',
            ],
            default => [
                'title' => 'Belum Ada Draft Praoutline Aktif',
                'description' => 'Mahasiswa ini belum memiliki usulan judul aktif yang tercatat pada data SPOTA saat ini.',
                'button' => 'Ajukan Outline Baru',
                'buttonHref' => route('mahasiswa.praoutline.upload', [], false),
                'class' => 'border-slate-200 bg-slate-50 text-slate-900',
                'buttonClass' => 'bg-[#15171A] text-white hover:opacity-90',
            ],
        };

        $announcementAlert = [
            'title' => 'Pengumuman Terbaru',
            'description' => $unreadAnnouncements > 0
                ? 'Terdapat '.$unreadAnnouncements.' pengumuman program studi yang belum dibaca.'
                : 'Tidak terdapat pengumuman baru yang perlu dibaca saat ini.',
            'button' => 'Lihat Semua Pengumuman',
            'buttonHref' => route('mahasiswa.pengumuman.index', [], false),
            'class' => 'border-amber-200 bg-amber-50 text-amber-900',
            'buttonClass' => 'bg-amber-400 text-[#15171A] hover:bg-amber-300',
        ];

        $dashboard = [
            'eyebrow' => 'Dashboard Mahasiswa',
            'title' => 'Halo, '.$user['nama_lengkap'].'.',
            'description' => 'Selamat datang di Sistem Pendukung Outline Tugas Akhir (SPOTA) Universitas Tanjungpura.',
            'menus' => [
                ['title' => 'Dashboard', 'href' => route('dashboard.mahasiswa'), 'icon' => 'home', 'active' => true],
                ['title' => 'Informasi', 'icon' => 'folder', 'children' => [
                    ['title' => 'Status Usulan', 'href' => route('mahasiswa.status-usulan', [], false), 'icon' => 'chart'],
                    ['title' => 'Ajukan Outline Baru', 'href' => route('mahasiswa.praoutline.upload', [], false), 'icon' => 'clipboard'],
                    ['title' => 'Penawaran Judul', 'href' => route('mahasiswa.penawaran.index', [], false), 'icon' => 'briefcase'],
                    ['title' => 'Pengumuman', 'href' => route('mahasiswa.pengumuman.index', [], false), 'icon' => 'bell'],
                    ['title' => 'Jadwal Terdekat', 'href' => '#jadwal', 'icon' => 'clock'],
                ]],
            ],
            'stats' => [
                ['label' => 'Status Usulan Terakhir', 'value' => $this->statusLabel($latestPraoutline?->status_usulan), 'delta' => $latestPraoutline ? 'Draft #'.$latestPraoutline->id : 'Belum ada draft', 'deltaClass' => $this->statusDeltaClass($latestPraoutline?->status_usulan), 'note' => $latestPraoutline?->judul ? $latestPraoutline->judul : 'Belum ada judul yang tercatat di sistem.'],
                ['label' => 'Pengumuman Belum Dibaca', 'value' => (string) $unreadAnnouncements, 'delta' => $unreadAnnouncements > 0 ? 'Perlu dibaca' : 'Sudah aman', 'deltaClass' => $unreadAnnouncements > 0 ? 'bg-amber-100 text-amber-800' : 'bg-emerald-100 text-emerald-800', 'note' => 'Jumlah pengumuman program studi yang belum dibaca.'],
                ['label' => 'Jadwal Terdekat', 'value' => $nextSchedule ? $this->scheduleLabel($nextSchedule->jenis) : '-', 'delta' => $nextSchedule ? 'Terjadwal' : 'Belum ada jadwal', 'deltaClass' => $nextSchedule ? 'bg-sky-100 text-sky-800' : 'bg-slate-200 text-slate-700', 'note' => $nextSchedule ? $this->formatDateTime($nextSchedule->start).' · '.$nextSchedule->ruangan : 'Belum ada jadwal seminar yang dipublikasikan untuk mahasiswa ini.'],
                ['label' => 'Draft Aktif', 'value' => (string) $activeDrafts, 'delta' => $activeDrafts > 0 ? 'Masih berjalan' : 'Tidak ada', 'deltaClass' => $activeDrafts > 0 ? 'bg-violet-100 text-violet-800' : 'bg-slate-200 text-slate-700', 'note' => 'Jumlah draft yang masih aktif pada data SPOTA.'],
            ],
            'latestTitle' => $latestPraoutline?->judul,
            'statusAlert' => $statusAlert,
            'announcementAlert' => $announcementAlert,
            'nextSchedule' => $nextSchedule ? [
                'jenis' => $this->scheduleLabel($nextSchedule->jenis),
                'tanggal' => $this->formatDateTime($nextSchedule->start),
                'ruangan' => $nextSchedule->ruangan ?: '-',
            ] : null,
            'publishedSchedules' => $publishedSchedules,
        ];

        return view('dashboard.mahasiswa', [
            'title' => 'Dashboard Mahasiswa | SPOTA Rebuild',
            'dashboard' => $dashboard,
            'user' => $user,
        ]);
    }

    private function statusLabel(?string $status): string
    {
        return match ($status) {
            '0' => 'Dalam Review',
            '1' => 'Disetujui',
            '2' => 'Ditolak',
            default => 'Belum Ada Draft',
        };
    }

    private function statusDeltaClass(?string $status): string
    {
        return match ($status) {
            '0' => 'bg-sky-100 text-sky-800',
            '1' => 'bg-emerald-100 text-emerald-800',
            '2' => 'bg-rose-100 text-rose-800',
            default => 'bg-slate-200 text-slate-700',
        };
    }

    private function scheduleLabel(?string $jenis): string
    {
        return match ($jenis) {
            'Sidang' => 'Sidang',
            'Outline' => 'Outline',
            'SidHas' => 'Seminar Hasil',
            default => $jenis ?? 'Jadwal',
        };
    }

    private function formatDateTime(?string $value): string
    {
        if (! $value) {
            return '-';
        }

        return Carbon::parse($value)->locale('id')->translatedFormat('j F Y, H:i');
    }
}