<?php

namespace App\Services;

use App\Models\CounselingOneOnOne;
use App\Jobs\SendAdminQnaCreatedMailJob;
use App\Support\LegacyCrypto\CiSeedCrypto;
use Illuminate\Support\Str;
use Illuminate\Contracts\Pagination\LengthAwarePaginator;
use Illuminate\Pagination\LengthAwarePaginator as Paginator;
use Illuminate\Support\Facades\Schema;
use Illuminate\Support\Facades\DB;

final class QnaService
{
    public function paginateMyQna(int $memNo, int $perPage = 10, int $year = 0): LengthAwarePaginator
    {
        $year  = $year > 0 ? $year : (int) date('Y');
        $table = "counseling_one_on_one_{$year}";

        if (!Schema::hasTable($table)) {
            return new Paginator([], 0, $perPage, 1, [
                'path'  => request()->url(),
                'query' => request()->query(),
            ]);
        }

        return CounselingOneOnOne::queryForYear($year)
            ->from("{$table} as q")
            ->leftJoin('counseling_code as cc', function ($join) {
                $join->on('cc.enquiry_code', '=', 'q.enquiry_code')
                    ->where('cc.enquiry_type', '=', 'e'); // ✅ 접수분류 타입
            })
            ->where('q.member_num', $memNo)
            ->select([
                'q.seq',
                'q.state',
                'q.enquiry_code',
                'q.enquiry_title',
                'q.regdate',
                // ✅ 코드 대신 보여줄 분류명
                'cc.enquiry_title as enquiry_code_name',
            ])
            ->orderByDesc('q.seq')
            ->paginate($perPage)
            ->withQueryString();
    }

    public function findMyQna(int $memNo, int $seq, int $year = 0)
    {
        $year  = $year > 0 ? $year : (int) date('Y');
        $table = "counseling_one_on_one_{$year}";

        if (!Schema::hasTable($table)) {
            abort(404);
        }

        return CounselingOneOnOne::queryForYear($year)
            ->from("{$table} as q")
            ->leftJoin('counseling_code as cc', function ($join) {
                $join->on('cc.enquiry_code', '=', 'q.enquiry_code')
                    ->where('cc.enquiry_type', '=', 'e');
            })
            ->where('q.member_num', $memNo)
            ->where('q.seq', $seq)
            ->select([
                'q.seq',
                'q.state',
                'q.enquiry_code',
                'q.enquiry_title',
                'q.enquiry_content',
                'q.answer_content',
                'q.regdate',
                'cc.enquiry_title as enquiry_code_name',
            ])
            ->firstOrFail();
    }

    public function getEnquiryCodes(): array
    {
        return DB::table('counseling_code')
            ->where('enquiry_type', 'e')
            ->orderBy('enquiry_code', 'asc')
            ->get(['enquiry_code', 'enquiry_title'])
            ->map(fn($r) => ['code' => (string)$r->enquiry_code, 'title' => (string)$r->enquiry_title])
            ->all();
    }

    /**
     * 1:1 문의 등록 (연도 테이블: counseling_one_on_one_YYYY)
     * 반환: insert seq(id)
     */
    public function createQna(int $memNo, array $payload, ?int $year = null): int
    {
        $year = $year ?: (int)date('Y');
        $table = "counseling_one_on_one_{$year}";

        // 테이블이 없으면(혹시 모를 경우) 생성은 다음 단계로. 지금은 실패 처리
        if (!Schema::hasTable($table)) {
            throw new \RuntimeException("qna_table_not_found: {$table}");
        }

        $enquiryCode    = (string)($payload['enquiry_code'] ?? '');
        $enquiryTitle   = strip_tags(trim((string)($payload['enquiry_title'] ?? '')));
        $enquiryContent = strip_tags(trim((string)($payload['enquiry_content'] ?? '')));
        $returnType     = (string)($payload['return_type'] ?? 'web');


        $id = (int) DB::transaction(function () use ($table, $memNo, $enquiryCode, $enquiryTitle, $enquiryContent, $returnType) {
            return DB::table($table)->insertGetId([
                'state'           => 'a',
                'member_num'      => $memNo,
                'enquiry_code'    => $enquiryCode,
                'enquiry_title'   => $enquiryTitle,
                'enquiry_content' => $enquiryContent,
                'return_type'     => $returnType,
                'user_upload'     => null,
                'regdate'         => now()->format('Y-m-d H:i:s'),
                'receipt_date'    => "1900-01-01 00:00:00",
                'defer_date'      => "1900-01-01 00:00:00",
                'completion_date' => "1900-01-01 00:00:00",
            ]);
        });


        $userEmail = (string)($payload['_user_email'] ?? '');
        $userName  = (string)($payload['_user_name'] ?? '');
        $ip        = (string)($payload['_ip'] ?? '');
        $cellEnc   = (string)($payload['_user_cell_enc'] ?? '');
        $seed = app(CiSeedCrypto::class);
        $cellPlain = (string) $seed->decrypt($cellEnc);

        SendAdminQnaCreatedMailJob::dispatch($memNo, $id, [
            'name' => $userName,
            'email' => $userEmail,
            'cell' => $cellPlain,
            'ip' => $ip,
            'year' => $year,
            'enquiry_code' => $enquiryCode,
            'enquiry_title' => $enquiryTitle,
            'enquiry_content' => $enquiryContent,
            'return_type' => $returnType,
            'created_at' => now()->toDateTimeString(),
        ])->onConnection('redis'); // 네 QUEUE_CONNECTION=redis일 때 명시해도 좋음

        return $id;
    }
}