<?php

namespace App\Services\Ticket;

use App\Models\Ticket;
use App\Models\TicketLog;
use App\Models\TicketType;
use App\Models\User;
use Illuminate\Support\Facades\DB;

class TicketService
{
    public function create(array $data, User $actor, ?int $tenantId): Ticket
    {
        return DB::transaction(function () use ($data, $actor, $tenantId) {

            $tenantId = $actor->isMasterAdmin() ? ($data['tenant_id'] ?? $tenantId) : $tenantId;
            abort_unless($tenantId, 422, 'Tenant wajib dipilih.');
            if (! empty($data['customer_id'])) abort_unless(\App\Models\Customer::whereKey($data['customer_id'])->where('tenant_id', $tenantId)->exists(), 422, 'Customer bukan milik tenant aktif.');
            $type = TicketType::findOrFail($data['ticket_type_id']);

            $ticket = Ticket::create([
                'ticket_no'      => $this->generateTicketNo(),
                'ticket_type_id' => $data['ticket_type_id'],
                'customer_id'    => $data['customer_id'] ?? null,
                'tenant_id'      => $tenantId,
                'title'          => $data['title'],
                'description'    => $data['description'] ?? null,
                'priority'       => $data['priority'],
                'status'         => $type->need_approval ? 'open' : 'approved',
                'sla_minutes'    => $type->sla_minutes,
                'created_by'     => $actor->id
                ,'approved_by'   => $type->need_approval ? null : $actor->id
                ,'approved_at'   => $type->need_approval ? null : now()
            ]);

            TicketLog::create([
                'ticket_id' => $ticket->id,
                'user_id'   => $actor->id,
                'activity'  => 'Ticket Created',
                'notes'     => 'Ticket dibuat oleh '.$actor->name,
                'created_at'=> now()
            ]);

            return $ticket->load(['ticketType','customer','tenant','creator','assignments.user']);
        });
    }

    public function update(Ticket $ticket, array $data): Ticket
    {
        $ticket->update($data);

        return $ticket->fresh();
    }

    public function delete(Ticket $ticket): Ticket
    {
        $ticket->update([
            'status' => 'cancelled'
        ]);

        return $ticket;
    }

    private function generateTicketNo(): string
    {
        $prefix = 'TCK-' . now()->format('Ym');

        $lastTicket = Ticket::where(
            'ticket_no',
            'like',
            $prefix . '%'
        )
        ->latest('id')
        ->first();

        $number = 1;

        if ($lastTicket) {
            $number = ((int) substr($lastTicket->ticket_no, -6)) + 1;
        }

        return $prefix . '-' . str_pad(
            $number,
            6,
            '0',
            STR_PAD_LEFT
        );
    }

    public function generateNo(): string { return $this->generateTicketNo(); }
}