<?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)
            ->where(static function ($query) use ($ticket): void {
                $query->whereNull('company_id')->orWhere('company_id', $ticket->company_id);
            })
            ->orderBy('sort_order')
            ->orderBy('id')
            ->get()
            ->each(function (AutomationRule $rule) use ($ticket, $sender, $mailbox): void {
                if (! $this->matches($rule, $ticket, $sender, $mailbox)) {
                    return;
                }

                $this->applyRuleUpdates($rule, $ticket);
            });

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

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

    private function containsWhenConfigured(string $value, ?string $match): bool
    {
        return ! $match || Str::contains(Str::lower($value), Str::lower($match));
    }

    private function applyRuleUpdates(AutomationRule $rule, Ticket $ticket): void
    {
        $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();
        }
    }
}