<?php

namespace App\Http\Controllers;

use App\Models\Activity;
use Illuminate\Http\Request;
use Inertia\Inertia;

class NotificationController extends Controller
{
    public function unread(Request $request)
    {
        $user = $request->user();
        if (! $user) {
            abort(403);
        }

        $today = now()->toDateString();
        $perPage = max(1, min(100, (int) $request->integer('perPage', 15)));
        $search = trim((string) $request->input('search', ''));

        $query = Activity::query()
            ->select(['id', 'due_date', 'amount', 'contract_id', 'client_case_id', 'created_at'])
            ->whereNotNull('due_date')
            ->whereDate('due_date', '<=', $today)
            ->whereNotExists(function ($q) use ($user) {
                $q->from('activity_notification_reads as anr')
                    ->whereColumn('anr.activity_id', 'activities.id')
                    ->where('anr.user_id', $user->id)
                    ->whereColumn('anr.due_date', 'activities.due_date');
            })
            // allow simple search by contract reference or person name
            ->when($search !== '', function ($q) use ($search) {
                $s = mb_strtolower($search);
                $q->leftJoin('contracts', 'contracts.id', '=', 'activities.contract_id')
                    ->leftJoin('client_cases', 'client_cases.id', '=', 'activities.client_case_id')
                    ->leftJoin('person', 'person.id', '=', 'client_cases.person_id')
                    ->where(function ($qq) use ($s) {
                        $qq->whereRaw('LOWER(COALESCE(contracts.reference, \'\')) LIKE ?', ['%'.$s.'%'])
                            ->orWhereRaw('LOWER(COALESCE(person.full_name, \'\')) LIKE ?', ['%'.$s.'%']);
                    });
            })
            ->with([
                'contract' => function ($q) {
                    $q->select(['contracts.id', 'contracts.uuid', 'contracts.reference', 'contracts.client_case_id'])
                        ->with([
                            'clientCase' => function ($qq) {
                                $qq->select(['client_cases.id', 'client_cases.uuid']);
                            },
                            'account' => function ($qq) {
                                $qq->select(['accounts.id', 'accounts.contract_id', 'accounts.balance_amount', 'accounts.initial_amount']);
                            },
                        ]);
                },
                'clientCase' => function ($q) {
                    $q->select(['client_cases.id', 'client_cases.uuid', 'client_cases.person_id'])
                        ->with([
                            'person' => function ($qq) {
                                $qq->select(['person.id', 'person.full_name']);
                            },
                        ]);
                },
            ])
            // force ordering by due_date DESC only
            ->orderByDesc('activities.due_date');

        // Use a custom page parameter name to match the frontend DataTableServer
        $activities = $query->paginate($perPage, ['*'], 'unread-page')->withQueryString();

        return Inertia::render('Notifications/Unread', [
            'activities' => $activities,
            'today' => $today,
        ]);
    }
}