<?php

declare(strict_types=1);

namespace Modules\Helpdesk\Livewire;

use App\Models\User;
use Illuminate\Contracts\View\View;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Schema;
use Livewire\Attributes\Validate;
use Livewire\Component;
use Modules\Helpdesk\Models\Category;
use Modules\Helpdesk\Models\KanbanBoard;
use Modules\Helpdesk\Models\Priority;
use Modules\Helpdesk\Models\Product;
use Modules\Helpdesk\Models\Project;
use Modules\Helpdesk\Models\Status;
use Modules\Helpdesk\Models\Tag;
use Modules\Helpdesk\Models\Team;
use Modules\Helpdesk\Models\Ticket;
use Modules\Helpdesk\Services\SlaService;
use Modules\Helpdesk\Services\WorkflowNotificationService;

final class TicketEdit extends Component
{
    public Ticket $ticket;

    #[Validate('nullable|integer')]
    public ?int $company_id = null;

    #[Validate('required|string|max:200')]
    public string $subject = '';

    #[Validate('required|string|min:10')]
    public string $body = '';

    #[Validate('required|integer|exists:helpdesk_statuses,id')]
    public ?int $status_id = null;

    #[Validate('nullable|integer|exists:helpdesk_kanban_boards,id')]
    public ?int $board_id = null;

    #[Validate('required|integer|exists:helpdesk_priorities,id')]
    public ?int $priority_id = null;

    #[Validate('nullable|integer|exists:helpdesk_categories,id')]
    public ?int $category_id = null;

    #[Validate('nullable|integer|exists:helpdesk_projects,id')]
    public ?int $project_id = null;

    #[Validate('nullable|integer|exists:helpdesk_products,id')]
    public ?int $product_id = null;

    #[Validate('nullable|integer|exists:helpdesk_teams,id')]
    public ?int $team_id = null;

    #[Validate('nullable|integer|exists:users,id')]
    public ?int $agent_id = null;

    #[Validate('nullable|date')]
    public ?string $due_at = null;


    /** @var array<int, int> */
    #[Validate('array')]
    public array $tag_ids = [];

    public function mount(Ticket $ticket): void
    {
        $this->authorize('update', $ticket);
        $this->ticket = $ticket->fresh(['status', 'priority', 'category', 'project', 'team', 'agent', 'tags']) ?? $ticket;

        $this->company_id = $this->ticket->company_id;
        $this->subject = $this->ticket->subject;
        $this->body = $this->ticket->body;
        $this->status_id = $this->ticket->status_id;
        $this->board_id = $this->ticket->board_id;
        $this->priority_id = $this->ticket->priority_id;
        $this->category_id = $this->ticket->category_id;
        $this->project_id = $this->ticket->project_id;
        $this->product_id = $this->ticket->product_id;
        $this->team_id = $this->ticket->team_id;
        $this->agent_id = $this->ticket->agent_id;
        $this->due_at = $this->ticket->due_at?->format('Y-m-d');
        $this->tag_ids = $this->ticket->tags->pluck('id')->map(fn ($id): int => (int) $id)->all();
    }

    public function save(WorkflowNotificationService $workflow, SlaService $sla): mixed
    {
        $this->authorize('update', $this->ticket);
        $this->validate();

        $this->validate([
            'tag_ids.*' => 'integer|exists:helpdesk_tags,id',
        ]);

        $status = Status::query()->findOrFail($this->status_id);

        $this->ticket->forceFill([
            'company_id' => $this->company_id,
            'subject' => $this->subject,
            'body' => $this->body,
            'status_id' => $status->id,
            'board_id' => $this->board_id,
            'priority_id' => $this->priority_id,
            'category_id' => $this->category_id,
            'project_id' => $this->project_id,
            'product_id' => $this->product_id,
            'team_id' => $this->team_id,
            'agent_id' => $this->agent_id,
            'due_at' => $this->due_at,
            'completed_at' => $status->is_closed ? now() : null,
            'last_activity_at' => now(),
        ])->save();

        $this->ticket->tags()->sync(array_values(array_unique(array_map('intval', $this->tag_ids))));

        if ($status->is_closed) {
            $sla->recordClosure($this->ticket);
        }

        $fresh = $this->ticket->fresh(['owner', 'agent', 'status', 'priority', 'category', 'project', 'team', 'product', 'tags']) ?? $this->ticket;
        $workflow->dispatch($fresh, $status->is_closed ? 'ticket.closed' : 'ticket.updated', Auth::user());

        session()->flash('success', 'Ticket ' . $fresh->reference . ' has been updated.');

        return redirect()->route('helpdesk.tickets.show', $fresh);
    }

    public function render(): View
    {
        return view('helpdesk::livewire.ticket-edit', [
            'boards' => KanbanBoard::query()->with('owner:id,name,email')->orderByDesc('is_default')->orderBy('sort_order')->orderBy('name')->get(),
            'statuses' => Status::query()->orderBy('sort_order')->orderBy('name')->get(),
            'priorities' => Priority::query()->orderBy('sort_order')->orderBy('name')->get(),
            'categories' => Category::query()->orderBy('name')->get(),
            'companies' => Schema::hasTable('companies') ? DB::table('companies')->select(['id', 'name'])->orderBy('name')->get() : collect(),
            'teams' => Team::query()->whereNull('archived_at')->orderBy('name')->get(),
            'projects' => Project::query()->whereNull('archived_at')->orderBy('title')->get(),
            'products' => Product::query()->where('is_active', true)->orderBy('name')->get(),
            'tags' => Tag::query()->orderBy('name')->get(),
            'agents' => User::query()
                ->where(static function ($query): void {
                    $query->where('helpdesk_agent', true)->orWhere('helpdesk_admin', true);
                })
                ->orderBy('name')
                ->get(['id', 'name', 'email']),
        ])->layout('layouts.app');
    }
}