<?php

namespace App\Console\Commands;

use App\Models\SystemSetting;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\Http;

class UpdateExchangeRates extends Command
{
    protected $signature = 'ifnex:update-rates {--source=ecb : Data source for exchange rates (ecb or freecurrencyapi)}';

    protected $description = 'Update exchange rates from external APIs';

    public function handle(): int
    {
        $source = $this->option('source');

        $this->info("Fetching exchange rates from source: {$source}...");

        try {
            $rates = match ($source) {
                'freecurrencyapi' => $this->fetchFromFreeCurrencyApi(),
                default => $this->fetchFromEcb(),
            };
        } catch (\Throwable $e) {
            $this->error("Failed to fetch rates: {$e->getMessage()}");

            return Command::FAILURE;
        }

        if ($rates) {
            SystemSetting::where('key', 'aed_to_irr')->update(['value' => (string) $rates['aed_to_irr']]);
            SystemSetting::where('key', 'usd_to_irr')->update(['value' => (string) $rates['usd_to_irr']]);

            $this->info("Exchange rates updated successfully:");
            $this->line("  AED/IRR: {$rates['aed_to_irr']}");
            $this->line("  USD/IRR: {$rates['usd_to_irr']}");
        } else {
            $this->warn("No rates were updated. Using fallback values.");
            $this->setFallbackRates();
        }

        return Command::SUCCESS;
    }

    private function fetchFromEcb(): ?array
    {
        $response = Http::get('https://api.exchangerate-api.com/v4/latest/AED');

        if ($response->failed()) {
            return null;
        }

        $data = $response->json();

        return [
            'aed_to_irr' => round($data['rates']['IRR'] ?? 455000, 2),
            'usd_to_irr' => round($data['rates']['IRR'] ?? 425000, 2),
        ];
    }

    private function fetchFromFreeCurrencyApi(): ?array
    {
        $response = Http::get('https://free.currencyapi.com/api/v3/latest', [
            'apikey' => config('ifnex.currency_api_key'),
            'base_currency' => 'AED',
        ]);

        if ($response->failed()) {
            return null;
        }

        $data = $response->json();

        if (!isset($data['data'])) {
            return null;
        }

        return [
            'aed_to_irr' => round(($data['data']['IRR']['value'] ?? 455000) * 100, 2),
            'usd_to_irr' => round(($data['data']['IRR']['value'] ?? 425000) * 100, 2),
        ];
    }

    private function setFallbackRates(): void
    {
        SystemSetting::updateOrCreate(
            ['key' => 'aed_to_irr'],
            ['value' => '455000', 'type' => 'number', 'description' => 'AED to IRR exchange rate']
        );
        SystemSetting::updateOrCreate(
            ['key' => 'usd_to_irr'],
            ['value' => '425000', 'type' => 'number', 'description' => 'USD to IRR exchange rate']
        );
        $this->info("Fallback rates set: AED/IRR=455000, USD/IRR=425000");
    }
}