<?php

namespace App\Http\Controllers\Api\V1;

use App\Helpers\ApiResponse;
use App\Http\Controllers\Controller;
use App\Services\Barobill\BarobillBillingService;
use Carbon\Carbon;
use Illuminate\Http\Request;

class BarobillBillingController extends Controller
{
    public function __construct(
        private BarobillBillingService $billingService,
    ) {}

    /**
     * 구독 목록
     */
    public function subscriptions(Request $request)
    {
        $data = $request->validate([
            'member_id' => 'nullable|integer',
        ]);

        return ApiResponse::handle(function () use ($data) {
            return [
                'subscriptions' => $this->billingService->getSubscriptions($data['member_id'] ?? null),
            ];
        }, __('message.fetched'));
    }

    /**
     * 구독 등록/수정
     */
    public function saveSubscription(Request $request)
    {
        $data = $request->validate([
            'member_id' => 'required|integer|exists:barobill_members,id',
            'service_type' => 'required|in:bank_account,card,hometax',
            'monthly_fee' => 'nullable|integer|min:0',
            'started_at' => 'nullable|date',
            'ended_at' => 'nullable|date|after_or_equal:started_at',
            'is_active' => 'nullable|boolean',
            'memo' => 'nullable|string|max:500',
        ]);

        return ApiResponse::handle(function () use ($data) {
            return $this->billingService->saveSubscription(
                $data['member_id'],
                $data['service_type'],
                $data
            );
        }, __('message.created'));
    }

    /**
     * 구독 해지
     */
    public function cancelSubscription(int $id)
    {
        return ApiResponse::handle(function () use ($id) {
            $this->billingService->cancelSubscription($id);

            return ['cancelled' => true];
        }, __('message.deleted'));
    }

    /**
     * 월별 과금 현황 목록
     */
    public function billingList(Request $request)
    {
        $data = $request->validate([
            'billing_month' => 'nullable|string|date_format:Y-m',
            'tenant_id' => 'nullable|integer',
        ]);

        return ApiResponse::handle(function () use ($data) {
            $billingMonth = $data['billing_month'] ?? Carbon::now()->format('Y-m');
            $tenantId = $data['tenant_id'] ?? null;

            return [
                'list' => $this->billingService->getMonthlyBillingList($billingMonth, $tenantId),
                'total' => $this->billingService->getMonthlyTotal($billingMonth, $tenantId),
                'billing_month' => $billingMonth,
            ];
        }, __('message.fetched'));
    }

    /**
     * 월별 과금 통계
     */
    public function billingStats(Request $request)
    {
        $data = $request->validate([
            'billing_month' => 'nullable|string|date_format:Y-m',
            'tenant_id' => 'nullable|integer',
        ]);

        return ApiResponse::handle(function () use ($data) {
            $billingMonth = $data['billing_month'] ?? Carbon::now()->format('Y-m');

            return $this->billingService->getMonthlyTotal($billingMonth, $data['tenant_id'] ?? null);
        }, __('message.fetched'));
    }

    /**
     * 월별 과금 배치 처리
     */
    public function processBilling(Request $request)
    {
        $data = $request->validate([
            'billing_month' => 'nullable|string|date_format:Y-m',
        ]);

        return ApiResponse::handle(function () use ($data) {
            return $this->billingService->processMonthlyBilling($data['billing_month'] ?? null);
        }, __('message.created'));
    }

    /**
     * 연간 과금 추이
     */
    public function yearlyTrend(Request $request)
    {
        $data = $request->validate([
            'year' => 'nullable|integer|min:2020|max:2030',
            'tenant_id' => 'nullable|integer',
        ]);

        return ApiResponse::handle(function () use ($data) {
            $year = $data['year'] ?? Carbon::now()->year;

            return [
                'trend' => $this->billingService->getYearlyTrend($year, $data['tenant_id'] ?? null),
                'year' => $year,
            ];
        }, __('message.fetched'));
    }

    /**
     * 과금 정책 목록
     */
    public function pricingPolicies()
    {
        return ApiResponse::handle(function () {
            return ['policies' => $this->billingService->getPricingPolicies()];
        }, __('message.fetched'));
    }

    /**
     * 과금 정책 수정
     */
    public function updatePricingPolicy(Request $request, int $id)
    {
        $data = $request->validate([
            'name' => 'nullable|string|max:100',
            'description' => 'nullable|string|max:500',
            'free_quota' => 'nullable|integer|min:0',
            'free_quota_unit' => 'nullable|string|max:10',
            'additional_unit' => 'nullable|integer|min:1',
            'additional_unit_label' => 'nullable|string|max:10',
            'additional_price' => 'nullable|integer|min:0',
            'is_active' => 'nullable|boolean',
        ]);

        return ApiResponse::handle(function () use ($id, $data) {
            return $this->billingService->updatePricingPolicy($id, $data);
        }, __('message.updated'));
    }
}