<?php

namespace App\Services\Billing;

use App\Models\BillingProfile;
use App\Models\User;
use Illuminate\Validation\ValidationException;

class BillingProfileService
{
    public function list(array $filters, User $actor, ?int $tenantId)
    {
        return BillingProfile::query()->with('tenant:id,tenant_code,tenant_name')
            ->when(! $actor->isMasterAdmin(), fn ($q) => $q->where('tenant_id', $tenantId))
            ->when($actor->isMasterAdmin() && $tenantId, fn ($q) => $q->where('tenant_id', $tenantId))
            ->when(! empty($filters['status']), fn ($q) => $q->where('status', $filters['status']))
            ->when(! empty($filters['search']), fn ($q) => $q->where('name', 'ILIKE', "%{$filters['search']}%"))
            ->orderBy($filters['sort_by'] ?? 'id', $filters['sort_direction'] ?? 'desc')
            ->paginate($filters['per_page'] ?? 10);
    }

    public function find(int $id): BillingProfile
    {
        return BillingProfile::with('tenant:id,tenant_code,tenant_name')->findOrFail($id);
    }

    public function create(array $data, User $actor, ?int $tenantId): BillingProfile
    {
        $data['tenant_id'] = $actor->isMasterAdmin() ? ($data['tenant_id'] ?? $tenantId) : $tenantId;
        if (! $data['tenant_id']) {
            throw ValidationException::withMessages(['tenant_id' => 'Tenant wajib dipilih.']);
        }
        $data['tax_rate'] = $data['tax_type'] === 'non_tax' ? 0 : ($data['tax_rate'] ?? 11);
        $data['status'] ??= 'active';
        $data = $this->normalizeSchedule($data);

        return BillingProfile::create($data)->load('tenant:id,tenant_code,tenant_name');
    }

    public function update(BillingProfile $profile, array $data, User $actor): BillingProfile
    {
        if (! $actor->isMasterAdmin()) {
            unset($data['tenant_id']);
        }
        if (($data['tax_type'] ?? $profile->tax_type) === 'non_tax') {
            $data['tax_rate'] = 0;
        }
        $data = $this->normalizeSchedule($data, $profile);
        $profile->update($data);

        return $profile->fresh()->load('tenant:id,tenant_code,tenant_name');
    }

    public function delete(BillingProfile $profile): void
    {
        if ($profile->customers()->exists() || $profile->invoices()->exists()) {
            throw ValidationException::withMessages(['profile' => 'Profile tagihan masih digunakan customer atau invoice.']);
        }
        $profile->delete();
    }

    private function normalizeSchedule(array $data, ?BillingProfile $profile = null): array
    {
        $type = $data['schedule_type'] ?? $profile?->schedule_type ?? 'fixed_date';
        $data['schedule_type'] = $type;

        if ($type === 'installation_date') {
            $data['invoice_day'] = $profile?->invoice_day ?? 1;
            $data['send_day'] = $profile?->send_day ?? 1;
            $data['warning_day'] = $profile?->warning_day ?? 1;
            $data['isolation_day'] = $profile?->isolation_day ?? 1;
        } else {
            $data['invoice_days_before'] = null;
            $data['send_days_before'] = null;
            $data['warning_days_before'] = null;
            $data['isolation_days_after'] = null;
        }

        return $data;
    }
}