<?php

declare(strict_types=1);

namespace Modules\Helpdesk\Services;

use Illuminate\Support\Str;
use Modules\Helpdesk\Models\AutomationRule;
use Modules\Helpdesk\Models\Ticket;

final class AutomationRuleService
{
    /** @param array<string, mixed> $context */
    public function apply(Ticket $ticket, array $context = []): Ticket
    {
        $sender = (string) ($context['sender'] ?? $ticket->owner?->email ?? '');
        $mailbox = (string) ($context['mailbox'] ?? '');

        AutomationRule::query()
            ->where('is_active', true)
            ->orderBy('sort_order')
            ->orderBy('id')
            ->get()
            ->each(function (AutomationRule $rule) use ($ticket, $sender, $mailbox): void {
                if (! $this->matches($rule, $ticket, $sender, $mailbox)) {
                    return;
                }

                $updates = array_filter([
                    'priority_id' => $rule->set_priority_id,
                    'category_id' => $rule->set_category_id,
                    'team_id' => $rule->set_team_id,
                    'project_id' => $rule->set_project_id,
                    'status_id' => $rule->set_status_id,
                    'agent_id' => $rule->set_agent_id,
                ], static fn ($value): bool => $value !== null);

                if ($updates !== []) {
                    $ticket->forceFill($updates + ['last_activity_at' => now()])->save();
                }
            });

        return $ticket->fresh() ?? $ticket;
    }

    private function matches(AutomationRule $rule, Ticket $ticket, string $sender, string $mailbox): bool
    {
        if ($rule->match_sender && ! Str::contains(Str::lower($sender), Str::lower($rule->match_sender))) {
            return false;
        }
        if ($rule->match_subject && ! Str::contains(Str::lower($ticket->subject), Str::lower($rule->match_subject))) {
            return false;
        }
        if ($rule->match_mailbox && ! Str::contains(Str::lower($mailbox), Str::lower($rule->match_mailbox))) {
            return false;
        }
        if ($rule->match_category_id && (int) $ticket->category_id !== (int) $rule->match_category_id) {
            return false;
        }

        return true;
    }
}