<?php

namespace App\Actions\Tickets;

use App\Enums\TicketWorklogEntryType;
use App\Models\Ticket;
use App\Models\TicketLink;
use App\Models\User;
use Illuminate\Support\Facades\DB;

class DeleteProjectTicketLink
{
    public function __construct(
        private readonly CreateTicketWorklogEntry $createTicketWorklogEntry,
    ) {}

    public function handle(Ticket $ticket, TicketLink $ticketLink, User $user): string
    {
        $ticketLink->load(['sourceTicket', 'targetTicket', 'ticketLinkType']);

        abort_unless(
            $ticketLink->source_ticket_id === $ticket->id || $ticketLink->target_ticket_id === $ticket->id,
            404,
        );

        $isSourceTicket = $ticketLink->source_ticket_id === $ticket->id;
        $linkedTicket = $isSourceTicket
            ? $ticketLink->targetTicket
            : $ticketLink->sourceTicket;

        $label = $ticketLink->ticketLinkType->labelForSource($isSourceTicket);
        $counterpartLabel = $ticketLink->ticketLinkType->labelForSource(! $isSourceTicket);

        DB::transaction(function () use ($label, $counterpartLabel, $linkedTicket, $user, $ticket, $ticketLink): void {
            $ticketLink->delete();

            $this->createTicketWorklogEntry->handle(
                $ticket,
                $user,
                TicketWorklogEntryType::LinkRemoved,
                "Removed {$label} link to {$linkedTicket->ticket_key}.",
                [
                    'linked_ticket_key' => $linkedTicket->ticket_key,
                    'ticket_link_type' => $label,
                ],
            );

            $this->createTicketWorklogEntry->handle(
                $linkedTicket,
                $user,
                TicketWorklogEntryType::LinkRemoved,
                "Removed {$counterpartLabel} link to {$ticket->ticket_key}.",
                [
                    'linked_ticket_key' => $ticket->ticket_key,
                    'ticket_link_type' => $counterpartLabel,
                ],
            );
        });

        return $label;
    }
}