<?php

namespace App\Http\Controllers;

use App\Models\Client;
use App\Models\ClientInvoice;
use App\Models\ClientProjectActivities;
use App\Services\UserHierarchyService;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Http\Request;
use Inertia\Inertia;
use Inertia\Response;

class DashboardController extends Controller
{
    public function __construct(private UserHierarchyService $hierarchyService)
    {
    }

    public function __invoke(Request $request): Response
    {
        $user = $request->user();
        $visibleClients = $this->hierarchyService
            ->scopeClientsVisibleTo(
                Client::query()->with(['invoices', 'invoiceAdjustments', 'customers']),
                $user
            )
            ->get();
        $visibleClientIds = $visibleClients->pluck('id');
        $visibleClientQuery = fn (): Builder => Client::query()->whereIn('id', $visibleClientIds);
        $visibleInvoiceQuery = fn (): Builder => ClientInvoice::query()->whereIn('client_id', $visibleClientIds);
        $unlinkedPendingInvoiceCount = $user->hasRole('Admin')
            ? ClientInvoice::query()->whereNull('approved_at')->whereNull('client_id')->count()
            : 0;

        $pendingInvoiceCount = $visibleInvoiceQuery()
            ->whereNull('approved_at')
            ->count() + $unlinkedPendingInvoiceCount;

        $pendingActivities = ClientProjectActivities::query()
            ->whereIn('client_id', $visibleClientIds)
            ->whereNull('completed_at')
            ->whereNotNull('estimated_completed_at')
            ->count();

        return Inertia::render('dashboard', [
            'stats' => [
                'totalClients' => $visibleClients->count(),
                'pendingInvoices' => $pendingInvoiceCount,
                'unlinkedPendingInvoices' => $unlinkedPendingInvoiceCount,
                'pendingActivities' => $pendingActivities,
                'clientsMissingSqlCode' => $visibleClientQuery()
                    ->where(function (Builder $query) {
                        $query->whereNull('sql_acc_code')
                            ->orWhere('sql_acc_code', '');
                    })
                    ->whereDoesntHave('customers', function (Builder $query) {
                        $query->whereNotNull('sql_acc_code')
                            ->where('sql_acc_code', '!=', '');
                    })
                    ->count(),
            ],
            'clientStatusCounts' => $visibleClients
                ->groupBy('status')
                ->map(fn ($clients) => $clients->count())
                ->sortKeys()
                ->toArray(),
            'recentInvoices' => $visibleInvoiceQuery()
                ->with('client:id,name,customer_id')
                ->latest('id')
                ->limit(6)
                ->get([
                    'id',
                    'client_id',
                    'invoice_no',
                    'approved_at',
                    'management_fee',
                    'media_fee',
                    'nett_amount',
                    'created_at',
                ])
                ->map(fn (ClientInvoice $invoice) => [
                    'id' => $invoice->id,
                    'invoice_no' => $invoice->invoice_no,
                    'approved_at' => $invoice->approved_at?->toDateTimeString(),
                    'management_fee' => $invoice->management_fee,
                    'media_fee' => $invoice->media_fee,
                    'nett_amount' => $invoice->nett_amount,
                    'created_at' => $invoice->created_at?->toDateString(),
                    'client' => $invoice->client,
                ])
                ->values()
                ->all(),
            'pendingActivities' => ClientProjectActivities::query()
                ->with(['client:id,name,customer_id', 'user:id,name'])
                ->whereIn('client_id', $visibleClientIds)
                ->whereNull('completed_at')
                ->whereNotNull('estimated_completed_at')
                ->orderBy('estimated_completed_at')
                ->limit(6)
                ->get()
                ->map(fn (ClientProjectActivities $activity) => [
                    'id' => $activity->id,
                    'activity_no' => $activity->activity_no,
                    'activity_type' => $activity->activity_type,
                    'task_description' => $activity->task_description,
                    'estimated_completed_at' => $activity->estimated_completed_at?->toDateString(),
                    'client' => $activity->client,
                    'assigned_person' => $activity->user?->name,
                ])
                ->values()
                ->all(),
        ]);
    }
}