<?php

namespace App\Services\Moneybird;

use Illuminate\Http\Client\PendingRequest;
use Illuminate\Http\Client\Response;
use Illuminate\Support\Facades\Http;
use Illuminate\Support\Facades\Log;

/**
 * Thin wrapper around the Moneybird REST API (https://developer.moneybird.com)
 * exposing only the calls subscription billing needs. Every method returns
 * plain decoded-JSON arrays rather than a bespoke SDK's value objects, and
 * throws MoneybirdException on unexpected failures.
 */
class MoneybirdClient
{
    private function http(): PendingRequest
    {
        $administrationId = config('services.moneybird.administration_id');

        if (blank(config('services.moneybird.api_token')) || blank($administrationId)) {
            throw new MoneybirdException('Moneybird is not configured — set MONEYBIRD_API_TOKEN and MONEYBIRD_ADMINISTRATION_ID (see `php artisan moneybird:setup`).');
        }

        return Http::withToken(config('services.moneybird.api_token'))
            ->baseUrl(rtrim(config('services.moneybird.base_url'), '/').'/'.$administrationId)
            ->acceptJson()
            ->timeout(15);
    }

    public function findContactByCustomerId(string $customerId): ?array
    {
        $response = $this->http()->get("contacts/customer_id/{$customerId}.json");

        if ($response->status() === 404) {
            return null;
        }

        return $this->decode($response, "GET contacts/customer_id/{$customerId}");
    }

    /**
     * @param  array<string, mixed>  $attributes
     */
    public function createContact(array $attributes): array
    {
        $response = $this->http()->post('contacts.json', ['contact' => $attributes]);

        return $this->decode($response, 'POST contacts');
    }

    /**
     * @param  array<string, mixed>  $attributes
     */
    public function createSalesInvoice(array $attributes): array
    {
        $response = $this->http()->post('sales_invoices.json', ['sales_invoice' => $attributes]);

        return $this->decode($response, 'POST sales_invoices');
    }

    public function findSalesInvoice(string $id): array
    {
        $response = $this->http()->get("sales_invoices/{$id}.json");

        return $this->decode($response, "GET sales_invoices/{$id}");
    }

    /**
     * @param  array<string, mixed>  $attributes
     */
    public function createRecurringSalesInvoice(array $attributes): array
    {
        $response = $this->http()->post('recurring_sales_invoices.json', ['recurring_sales_invoice' => $attributes]);

        return $this->decode($response, 'POST recurring_sales_invoices');
    }

    /**
     * @param  array<string, mixed>  $attributes
     */
    public function updateRecurringSalesInvoice(string $id, array $attributes): array
    {
        $response = $this->http()->patch("recurring_sales_invoices/{$id}.json", ['recurring_sales_invoice' => $attributes]);

        return $this->decode($response, "PATCH recurring_sales_invoices/{$id}");
    }

    public function deleteRecurringSalesInvoice(string $id): void
    {
        $response = $this->http()->delete("recurring_sales_invoices/{$id}.json");

        // Already gone is fine — deleting is meant to be idempotent here.
        if ($response->status() === 404) {
            return;
        }

        $this->decode($response, "DELETE recurring_sales_invoices/{$id}", allowEmpty: true);
    }

    /**
     * @return array<int, array<string, mixed>>
     */
    public function listAdministrations(): array
    {
        $response = Http::withToken(config('services.moneybird.api_token'))
            ->acceptJson()
            ->timeout(15)
            ->get(rtrim(config('services.moneybird.base_url'), '/').'/administrations.json');

        return $this->decode($response, 'GET administrations');
    }

    /**
     * @return array<int, array<string, mixed>>
     */
    public function listTaxRates(): array
    {
        $response = $this->http()->get('tax_rates.json');

        return $this->decode($response, 'GET tax_rates');
    }

    /**
     * @return array<int, array<string, mixed>>
     */
    public function listLedgerAccounts(): array
    {
        $response = $this->http()->get('ledger_accounts.json');

        return $this->decode($response, 'GET ledger_accounts');
    }

    /**
     * @param  array<string, mixed>  $attributes
     */
    public function createWebhook(array $attributes): array
    {
        $response = $this->http()->post('webhooks.json', $attributes);

        return $this->decode($response, 'POST webhooks');
    }

    /**
     * @return array<mixed>
     */
    private function decode(Response $response, string $context, bool $allowEmpty = false): array
    {
        if ($response->failed()) {
            Log::error("Moneybird API request failed: {$context}", [
                'status' => $response->status(),
                'body' => $response->body(),
            ]);

            throw new MoneybirdException("Moneybird API request failed ({$context}): HTTP {$response->status()}");
        }

        if ($allowEmpty && blank($response->body())) {
            return [];
        }

        return $response->json() ?? [];
    }
}