<?php

namespace App\Livewire\Dashboard;

use App\Models\ActivityLog;
use App\Models\ServiceRequest;
use App\Models\Status;
use App\Models\User;
use Illuminate\Database\Eloquent\Builder;
use Livewire\Attributes\Layout;
use Livewire\Component;

#[Layout('layouts.app')]
class DashboardPage extends Component
{
    public int $openToday = 0;

    public int $overdue = 0;

    public float $avgResolutionHours = 0;

    public array $statusChart = [];

    public array $priorityChart = [];

    public array $topTechnicians = [];

    public array $recentActivities = [];

    public array $upcomingTasks = [];

    public function mount(): void
    {
        abort_unless(auth()->user()->isAdmin() || auth()->user()->isManager(), 403);
        $this->refreshData();
    }

    public function refreshData(): void
    {
        $this->openToday = ServiceRequest::query()
            ->open()
            ->whereDate('created_at', now()->toDateString())
            ->count();

        $this->overdue = ServiceRequest::query()->overdue()->count();

        $this->avgResolutionHours = (float) (ServiceRequest::query()
            ->whereNotNull('completed_at')
            ->whereDate('completed_at', '>=', now()->subDays(30))
            ->selectRaw('AVG(TIMESTAMPDIFF(HOUR, created_at, completed_at)) as avg_hours')
            ->value('avg_hours') ?? 0);

        $this->statusChart = Status::query()
            ->orderBy('sort_order')
            ->get()
            ->map(fn (Status $status) => [
                'label' => $status->name,
                'value' => ServiceRequest::query()->where('status_id', $status->id)->count(),
                'color' => $status->color_hex,
            ])
            ->toArray();

        $this->priorityChart = ServiceRequest::query()
            ->join('priorities', 'priorities.id', '=', 'requests.priority_id')
            ->selectRaw('priorities.name as label, priorities.color_hex as color, COUNT(requests.id) as value')
            ->groupBy('priorities.id', 'priorities.name', 'priorities.color_hex')
            ->orderByRaw('MIN(priorities.level)')
            ->get()
            ->map(fn ($row) => [
                'label' => $row->label,
                'value' => (int) $row->value,
                'color' => $row->color,
            ])
            ->toArray();

        $this->topTechnicians = User::query()
            ->where('role', 'technician')
            ->withCount([
                'assignedRequests as closed_requests_count' => fn (Builder $query) => $query->whereHas('status', fn (Builder $status) => $status->where('slug', 'closed')),
            ])
            ->orderByDesc('closed_requests_count')
            ->limit(5)
            ->get()
            ->map(fn (User $user) => [
                'name' => $user->name,
                'closed_requests_count' => (int) $user->closed_requests_count,
            ])
            ->toArray();

        $this->recentActivities = ActivityLog::query()
            ->with('user')
            ->latest('created_at')
            ->limit(10)
            ->get()
            ->map(fn (ActivityLog $log) => [
                'user' => $log->user?->name ?? 'Система',
                'action' => $log->action,
                'description' => $log->description,
                'created_at' => $log->created_at?->format('d.m.Y H:i'),
            ])
            ->toArray();

        $this->upcomingTasks = ServiceRequest::query()
            ->with(['assignee', 'status'])
            ->whereNotNull('planned_at')
            ->whereBetween('planned_at', [now(), now()->addDays(7)])
            ->orderBy('planned_at')
            ->limit(8)
            ->get()
            ->map(fn (ServiceRequest $request) => [
                'ticket' => $request->ticket_number,
                'title' => $request->title,
                'planned_at' => $request->planned_at?->format('d.m.Y H:i'),
                'assignee' => $request->assignee?->name ?? 'Не назначен',
            ])
            ->toArray();

        $this->dispatch('dashboard-charts-updated', status: $this->statusChart, priority: $this->priorityChart);
    }

    public function render()
    {
        return view('livewire.dashboard.dashboard-page')->title('Дашборд');
    }
}