<?php

namespace App\Services\System\Setting;

use App\Enums\OrderChannel;
use App\Settings\MarketplaceSettings;
use App\Support\Marketplace\MarketplaceFeeCalculator;
use App\Support\Marketplace\MarketplaceFeeRule;

class MarketplaceService
{
    /**
     * @return list<string>
     */
    private function tiktokFeeKeys(): array
    {
        return [
            'tiktok_shop_platform_commission',
            'tiktok_shop_logistics_service_fee',
            'tiktok_shop_dynamic_commission',
            'tiktok_shop_order_processing_fee',
            'tiktok_shop_affiliate',
            'tiktok_shop_pre_order_service_fee',
        ];
    }

    /**
     * @return list<string>
     */
    private function shopeeFeeKeys(): array
    {
        return [
            'shopee_admin_fee',
            'shopee_program_fee',
            'shopee_shipping_savings',
            'shopee_premium',
            'shopee_service_fee',
            'shopee_order_processing_fee',
            'shopee_ams_commission_fee',
            'shopee_pre_order',
            'shopee_live_extra',
        ];
    }

    public function marketplaceData(): array
    {
        $settings = app(MarketplaceSettings::class);

        return [
            'tiktok_shop_platform_commission' => $this->presentFeeRule($settings->tiktok_shop_platform_commission),
            'tiktok_shop_logistics_service_fee' => $this->presentFeeRule($settings->tiktok_shop_logistics_service_fee),
            'tiktok_shop_dynamic_commission' => $this->presentFeeRule($settings->tiktok_shop_dynamic_commission),
            'tiktok_shop_order_processing_fee' => $this->presentFeeRule($settings->tiktok_shop_order_processing_fee),
            'tiktok_shop_affiliate' => $this->presentFeeRule($settings->tiktok_shop_affiliate),
            'tiktok_shop_pre_order_service_fee' => $this->presentFeeRule($settings->tiktok_shop_pre_order_service_fee),
            'shopee_admin_fee' => $this->presentFeeRule($settings->shopee_admin_fee),
            'shopee_program_fee' => $this->presentFeeRule($settings->shopee_program_fee),
            'shopee_shipping_savings' => $this->presentFeeRule($settings->shopee_shipping_savings),
            'shopee_premium' => $this->presentFeeRule($settings->shopee_premium),
            'shopee_service_fee' => $this->presentFeeRule($settings->shopee_service_fee),
            'shopee_order_processing_fee' => $this->presentFeeRule($settings->shopee_order_processing_fee),
            'shopee_ams_commission_fee' => $this->presentFeeRule($settings->shopee_ams_commission_fee),
            'shopee_pre_order' => $this->presentFeeRule($settings->shopee_pre_order),
            'shopee_live_extra' => $this->presentFeeRule($settings->shopee_live_extra),
        ];
    }

    public function updateMarketplace(array $validated): void
    {
        $settings = app(MarketplaceSettings::class);

        foreach ($this->tiktokFeeKeys() as $key) {
            $settings->{$key} = $this->normalizeFeeRule($validated[$key]);
        }

        foreach ($this->shopeeFeeKeys() as $key) {
            $settings->{$key} = $this->normalizeFeeRule($validated[$key]);
        }

        $settings->save();
    }

    /**
     * @param  list<array{quantity: int, subtotal: int}>  $lineItems
     * @return array<string, mixed>|null
     */
    public function buildOrderSnapshot(OrderChannel $channel, int $totalAmount, array $lineItems): ?array
    {
        $feeSnapshot = $this->feeRulesForChannel($channel);

        if ($feeSnapshot === null) {
            return null;
        }

        $calculation = app(MarketplaceFeeCalculator::class)->calculate(
            $feeSnapshot['fees'],
            $totalAmount,
            $lineItems,
        );

        return [
            'platform' => $feeSnapshot['platform'],
            'fees' => $feeSnapshot['fees'],
            'base_amount' => $totalAmount,
            'results' => $calculation['results'],
            'total_fee_amount' => $calculation['total_fee_amount'],
            'net_amount' => $calculation['net_amount'],
        ];
    }

    /**
     * @return array{platform: string, fees: array<string, array{scope: string, value_type: string, value: float}>}|null
     */
    private function feeRulesForChannel(OrderChannel $channel): ?array
    {
        $settings = app(MarketplaceSettings::class);

        return match ($channel) {
            OrderChannel::TIKTOK => [
                'platform' => 'tiktok',
                'fees' => [
                    'platform_commission' => $this->presentFeeRule($settings->tiktok_shop_platform_commission),
                    'logistics_service_fee' => $this->presentFeeRule($settings->tiktok_shop_logistics_service_fee),
                    'dynamic_commission' => $this->presentFeeRule($settings->tiktok_shop_dynamic_commission),
                    'order_processing_fee' => $this->presentFeeRule($settings->tiktok_shop_order_processing_fee),
                    'affiliate' => $this->presentFeeRule($settings->tiktok_shop_affiliate),
                    'pre_order_service_fee' => $this->presentFeeRule($settings->tiktok_shop_pre_order_service_fee),
                ],
            ],
            OrderChannel::SHOPEE => [
                'platform' => 'shopee',
                'fees' => [
                    'admin_fee' => $this->presentFeeRule($settings->shopee_admin_fee),
                    'program_fee' => $this->presentFeeRule($settings->shopee_program_fee),
                    'shipping_savings' => $this->presentFeeRule($settings->shopee_shipping_savings),
                    'premium' => $this->presentFeeRule($settings->shopee_premium),
                    'service_fee' => $this->presentFeeRule($settings->shopee_service_fee),
                    'order_processing_fee' => $this->presentFeeRule($settings->shopee_order_processing_fee),
                    'ams_commission_fee' => $this->presentFeeRule($settings->shopee_ams_commission_fee),
                    'pre_order' => $this->presentFeeRule($settings->shopee_pre_order),
                    'live_extra' => $this->presentFeeRule($settings->shopee_live_extra),
                ],
            ],
            OrderChannel::STORE => null,
        };
    }

    /**
     * @param  array{scope: string, value_type: string, value: float|int|string}  $data
     * @return array{scope: string, value_type: string, value: float}
     */
    private function presentFeeRule(array $data): array
    {
        return MarketplaceFeeRule::fromArray($data)->toArray();
    }

    /**
     * @param  array{scope: string, value_type: string, value: float|int|string}  $data
     * @return array{scope: string, value_type: string, value: float}
     */
    private function normalizeFeeRule(array $data): array
    {
        return MarketplaceFeeRule::fromArray($data)->toArray();
    }
}