<?php

namespace App\Http\Controllers\Api\V1;

use App\Helpers\ApiResponse;
use App\Http\Controllers\Controller;
use App\Models\Tenants\JournalEntry;
use App\Services\HometaxInvoiceService;
use App\Services\JournalSyncService;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;

/**
 * 홈택스 세금계산서 API 컨트롤러 (React 연동용)
 *
 * MNG에서 동기화된 홈택스 세금계산서를 React에서 조회/관리
 */
class HometaxInvoiceController extends Controller
{
    public function __construct(
        protected HometaxInvoiceService $service,
        protected JournalSyncService $journalSyncService,
    ) {}

    /**
     * 매출 세금계산서 목록
     */
    public function sales(Request $request): JsonResponse
    {
        return ApiResponse::handle(function () use ($request) {
            $params = $request->validate([
                'start_date' => 'nullable|date',
                'end_date' => 'nullable|date|after_or_equal:start_date',
                'search' => 'nullable|string|max:100',
                'per_page' => 'nullable|integer|min:1|max:100',
                'page' => 'nullable|integer|min:1',
            ]);

            return $this->service->sales($params);
        }, __('message.fetched'));
    }

    /**
     * 매입 세금계산서 목록
     */
    public function purchases(Request $request): JsonResponse
    {
        return ApiResponse::handle(function () use ($request) {
            $params = $request->validate([
                'start_date' => 'nullable|date',
                'end_date' => 'nullable|date|after_or_equal:start_date',
                'search' => 'nullable|string|max:100',
                'per_page' => 'nullable|integer|min:1|max:100',
                'page' => 'nullable|integer|min:1',
            ]);

            return $this->service->purchases($params);
        }, __('message.fetched'));
    }

    /**
     * 세금계산서 상세 조회
     */
    public function show(int $id): JsonResponse
    {
        return ApiResponse::handle(function () use ($id) {
            $invoice = $this->service->show($id);
            if (! $invoice) {
                throw new \Illuminate\Database\Eloquent\ModelNotFoundException;
            }

            return $invoice;
        }, __('message.fetched'));
    }

    /**
     * 요약 통계 (매출/매입 합계)
     */
    public function summary(Request $request): JsonResponse
    {
        return ApiResponse::handle(function () use ($request) {
            $params = $request->validate([
                'start_date' => 'nullable|date',
                'end_date' => 'nullable|date|after_or_equal:start_date',
            ]);

            return $this->service->summary($params);
        }, __('message.fetched'));
    }

    // =========================================================================
    // 수동 입력 (Manual)
    // =========================================================================

    /**
     * 수동 세금계산서 등록
     */
    public function store(Request $request): JsonResponse
    {
        return ApiResponse::handle(function () use ($request) {
            $validated = $request->validate([
                'invoice_type' => 'required|in:sales,purchase',
                'nts_confirm_num' => 'nullable|string|max:50',
                'write_date' => 'required|date',
                'issue_date' => 'nullable|date',
                'invoicer_corp_num' => 'nullable|string|max:20',
                'invoicer_corp_name' => 'nullable|string|max:200',
                'invoicer_ceo_name' => 'nullable|string|max:100',
                'invoicee_corp_num' => 'nullable|string|max:20',
                'invoicee_corp_name' => 'nullable|string|max:200',
                'invoicee_ceo_name' => 'nullable|string|max:100',
                'supply_amount' => 'required|integer',
                'tax_amount' => 'required|integer',
                'total_amount' => 'required|integer',
                'tax_type' => 'nullable|string|max:10',
                'purpose_type' => 'nullable|string|max:10',
                'issue_type' => 'nullable|string|max:10',
                'item_name' => 'nullable|string|max:200',
                'account_code' => 'nullable|string|max:20',
                'account_name' => 'nullable|string|max:100',
                'deduction_type' => 'nullable|string|max:20',
                'remark1' => 'nullable|string|max:500',
            ]);

            return $this->service->storeManual($validated);
        }, __('message.created'));
    }

    /**
     * 수동 세금계산서 수정
     */
    public function update(Request $request, int $id): JsonResponse
    {
        return ApiResponse::handle(function () use ($request, $id) {
            $validated = $request->validate([
                'write_date' => 'nullable|date',
                'issue_date' => 'nullable|date',
                'invoicer_corp_num' => 'nullable|string|max:20',
                'invoicer_corp_name' => 'nullable|string|max:200',
                'invoicee_corp_num' => 'nullable|string|max:20',
                'invoicee_corp_name' => 'nullable|string|max:200',
                'supply_amount' => 'nullable|integer',
                'tax_amount' => 'nullable|integer',
                'total_amount' => 'nullable|integer',
                'item_name' => 'nullable|string|max:200',
                'account_code' => 'nullable|string|max:20',
                'account_name' => 'nullable|string|max:100',
                'deduction_type' => 'nullable|string|max:20',
                'remark1' => 'nullable|string|max:500',
            ]);

            return $this->service->updateManual($id, $validated);
        }, __('message.updated'));
    }

    /**
     * 수동 세금계산서 삭제
     */
    public function destroy(int $id): JsonResponse
    {
        return ApiResponse::handle(function () use ($id) {
            return $this->service->destroyManual($id);
        }, __('message.deleted'));
    }

    // =========================================================================
    // 분개 (자체 테이블: hometax_invoice_journals)
    // =========================================================================

    /**
     * 분개 조회
     */
    public function getJournals(int $id): JsonResponse
    {
        return ApiResponse::handle(function () use ($id) {
            return $this->service->getJournals($id);
        }, __('message.fetched'));
    }

    /**
     * 분개 저장
     */
    public function saveJournals(Request $request, int $id): JsonResponse
    {
        return ApiResponse::handle(function () use ($request, $id) {
            $validated = $request->validate([
                'items' => 'required|array|min:1',
                'items.*.dc_type' => 'required|in:debit,credit',
                'items.*.account_code' => 'required|string|max:20',
                'items.*.account_name' => 'nullable|string|max:100',
                'items.*.debit_amount' => 'required|integer|min:0',
                'items.*.credit_amount' => 'required|integer|min:0',
                'items.*.description' => 'nullable|string|max:500',
            ]);

            return $this->service->saveJournals($id, $validated['items']);
        }, __('message.created'));
    }

    /**
     * 분개 삭제
     */
    public function deleteJournals(int $id): JsonResponse
    {
        return ApiResponse::handle(function () use ($id) {
            return $this->service->deleteJournals($id);
        }, __('message.deleted'));
    }

    // =========================================================================
    // 통합 분개 (JournalSyncService - CEO 대시보드 연동)
    // =========================================================================

    /**
     * 통합 분개 조회
     */
    public function getJournalEntries(int $id): JsonResponse
    {
        return ApiResponse::handle(function () use ($id) {
            $sourceKey = "hometax_{$id}";

            return $this->journalSyncService->getForSource(
                JournalEntry::SOURCE_HOMETAX_INVOICE,
                $sourceKey
            ) ?? ['items' => []];
        }, __('message.fetched'));
    }

    /**
     * 통합 분개 저장
     */
    public function storeJournalEntries(Request $request, int $id): JsonResponse
    {
        return ApiResponse::handle(function () use ($request, $id) {
            $validated = $request->validate([
                'items' => 'required|array|min:1',
                'items.*.side' => 'required|in:debit,credit',
                'items.*.account_code' => 'required|string|max:20',
                'items.*.account_name' => 'nullable|string|max:100',
                'items.*.debit_amount' => 'required|integer|min:0',
                'items.*.credit_amount' => 'required|integer|min:0',
                'items.*.vendor_name' => 'nullable|string|max:200',
                'items.*.memo' => 'nullable|string|max:500',
            ]);

            $invoice = $this->service->show($id);
            if (! $invoice) {
                throw new \Illuminate\Database\Eloquent\ModelNotFoundException;
            }

            $entryDate = $invoice->write_date?->format('Y-m-d') ?? now()->format('Y-m-d');
            $sourceKey = "hometax_{$id}";

            return $this->journalSyncService->saveForSource(
                JournalEntry::SOURCE_HOMETAX_INVOICE,
                $sourceKey,
                $entryDate,
                "홈택스 세금계산서 분개 (#{$id})",
                $validated['items'],
            );
        }, __('message.created'));
    }

    /**
     * 통합 분개 삭제
     */
    public function deleteJournalEntries(int $id): JsonResponse
    {
        return ApiResponse::handle(function () use ($id) {
            $sourceKey = "hometax_{$id}";

            return $this->journalSyncService->deleteForSource(
                JournalEntry::SOURCE_HOMETAX_INVOICE,
                $sourceKey
            );
        }, __('message.deleted'));
    }
}