<?php

namespace App\Controllers\Api;

use CodeIgniter\HTTP\ResponseInterface;

class OnboardController extends BaseApiController
{
    protected $format = 'json';
    protected $table = 'onboard';

    /**
     * 선상 목록
     * GET /api/onboard/list
     */
    public function index()
    {
        $auth = $this->requireAuth();
        if ($auth instanceof ResponseInterface) {
            return $auth;
        }

        try {
            $page = (int) ($this->request->getGet('page') ?? 1);
            $perPage = (int) ($this->request->getGet('per_page') ?? 10);
            if ($page < 1) $page = 1;
            if ($perPage < 1) $perPage = 10;
            $offset = ($page - 1) * $perPage;

            $search = trim((string) $this->request->getGet('search'));
            $status = trim((string) $this->request->getGet('status'));

            $db = $this->getDB();
            $builder = $db->table($this->table . ' o');
            $builder->join('fishing_field f', 'f.id = o.field_id', 'left');
            $builder->join('fishing_area a', 'a.id = o.area_id', 'left');
            $builder->where('o.deleted_YN', 'N');

            if ($search !== '') {
                $builder->groupStart()
                    ->like('o.name', $search)
                    ->orLike('a.name', $search)
                    ->groupEnd();
            }
            if ($status === 'Y' || $status === 'N') {
                $builder->where('o.status_YN', $status);
            }

            $total = $builder->countAllResults(false);

            // 계좌번호는 목록에서 제외 (민감정보)
            $items = $builder
                ->select('o.id, o.name, o.field_id, o.area_id, o.area_detail, o.partnership_YN, o.status_YN, o.created_at, f.name as field_name, a.name as area_name')
                ->orderBy('o.id', 'DESC')
                ->limit($perPage, $offset)
                ->get()
                ->getResult();

            return $this->respondSuccess([
                'items'       => $items,
                'total'       => $total,
                'page'        => $page,
                'per_page'    => $perPage,
                'total_pages' => (int) ceil($total / $perPage),
            ]);
        } catch (\Exception $e) {
            log_message('error', 'OnboardController index error: ' . $e->getMessage());
            return $this->respondError('목록 조회 중 오류가 발생했습니다: ' . $e->getMessage(), ResponseInterface::HTTP_INTERNAL_SERVER_ERROR);
        }
    }

    /**
     * 선상 등록
     * POST /api/onboard
     */
    public function create()
    {
        $auth = $this->requireAuth();
        if ($auth instanceof ResponseInterface) {
            return $auth;
        }

        try {
            $payload = $this->request->getJSON(true);
            if (!is_array($payload) || empty($payload)) {
                $payload = $this->request->getPost() ?? [];
            }

            $fieldId = (int) ($payload['field_id'] ?? 0);
            $areaId  = (int) ($payload['area_id'] ?? 0);
            $name    = trim((string) ($payload['name'] ?? ''));

            // 필수값 검증
            if ($fieldId <= 0) {
                return $this->respondError('분야를 선택하세요.', ResponseInterface::HTTP_BAD_REQUEST);
            }
            if ($areaId <= 0) {
                return $this->respondError('지역을 선택하세요.', ResponseInterface::HTTP_BAD_REQUEST);
            }
            if ($name === '') {
                return $this->respondError('선상명을 입력하세요.', ResponseInterface::HTTP_BAD_REQUEST);
            }
            if (mb_strlen($name) > 100) {
                return $this->respondError('선상명은 100자 이내로 입력하세요.', ResponseInterface::HTTP_BAD_REQUEST);
            }

            $db = $this->getDB();

            // 분야 / 지역 존재 확인
            $fieldExists = $db->table('fishing_field')
                ->where('id', $fieldId)->where('deleted_YN', 'N')->countAllResults();
            if ($fieldExists === 0) {
                return $this->respondError('존재하지 않는 분야입니다.', ResponseInterface::HTTP_BAD_REQUEST);
            }

            $areaExists = $db->table('fishing_area')
                ->where('id', $areaId)->where('deleted_YN', 'N')->countAllResults();
            if ($areaExists === 0) {
                return $this->respondError('존재하지 않는 지역입니다.', ResponseInterface::HTTP_BAD_REQUEST);
            }

            // Y/N 정규화
            $partnership = (($payload['partnership_YN'] ?? 'N') === 'Y') ? 'Y' : 'N';
            $status      = (($payload['status_YN'] ?? 'Y') === 'N') ? 'N' : 'Y';

            $insertData = [
                'field_id'       => $fieldId,
                'area_id'        => $areaId,
                'name'           => $name,
                'area_detail'    => trim((string) ($payload['area_detail'] ?? '')),
                'tonnage'        => trim((string) ($payload['tonnage'] ?? '')),
                'capacity'       => trim((string) ($payload['capacity'] ?? '')),
                'zip_code'       => trim((string) ($payload['zip_code'] ?? '')),
                'address'        => trim((string) ($payload['address'] ?? '')),
                'address_detail' => trim((string) ($payload['address_detail'] ?? '')),
                'address_refer'  => trim((string) ($payload['address_refer'] ?? '')),
                'lat'            => trim((string) ($payload['lat'] ?? '')),
                'lng'            => trim((string) ($payload['lng'] ?? '')),
                'partnership_YN' => $partnership,
                'status_YN'      => $status,
                'created_at'     => date('Y-m-d H:i:s'),
            ];

            // 제휴인 경우에만 계좌 정보 저장 (비제휴면 빈 값)
            // 계좌번호는 양방향 암호화하여 저장
            if ($partnership === 'Y') {
                $insertData['bank_code']      = trim((string) ($payload['bank_code'] ?? ''));
                $insertData['account_number'] = $this->encryptValue(trim((string) ($payload['account_number'] ?? '')));
                $insertData['account_holder'] = trim((string) ($payload['account_holder'] ?? ''));
            } else {
                $insertData['bank_code']      = '';
                $insertData['account_number'] = '';
                $insertData['account_holder'] = '';
            }

            if (!$db->table($this->table)->insert($insertData)) {
                return $this->respondError('등록에 실패했습니다.', ResponseInterface::HTTP_INTERNAL_SERVER_ERROR);
            }

            $newId = $db->insertID();
            $row = $db->table($this->table)->where('id', $newId)->get()->getRow();
            // 응답 시 계좌번호 복호화
            if ($row) {
                $row->account_number = $this->decryptValue($row->account_number);
            }

            return $this->respondSuccess($row, '선상이 등록되었습니다.', ResponseInterface::HTTP_CREATED);
        } catch (\Exception $e) {
            log_message('error', 'OnboardController create error: ' . $e->getMessage());
            return $this->respondError('등록 중 오류가 발생했습니다: ' . $e->getMessage(), ResponseInterface::HTTP_INTERNAL_SERVER_ERROR);
        }
    }

    /**
     * 선상 상세 조회
     * GET /api/onboard/:id
     */
    public function show($id = null)
    {
        $auth = $this->requireAuth();
        if ($auth instanceof ResponseInterface) {
            return $auth;
        }

        if (empty($id)) {
            return $this->respondError('ID가 필요합니다.', ResponseInterface::HTTP_BAD_REQUEST);
        }

        try {
            $row = $this->getDB()->table($this->table . ' o')
                ->select('o.*, f.name as field_name, a.name as area_name')
                ->join('fishing_field f', 'f.id = o.field_id', 'left')
                ->join('fishing_area a', 'a.id = o.area_id', 'left')
                ->where('o.id', (int) $id)
                ->where('o.deleted_YN', 'N')
                ->get()
                ->getRow();

            if (!$row) {
                return $this->respondError('해당 선상을 찾을 수 없습니다.', ResponseInterface::HTTP_NOT_FOUND);
            }

            // 계좌번호 복호화
            $row->account_number = $this->decryptValue($row->account_number);

            return $this->respondSuccess($row);
        } catch (\Exception $e) {
            log_message('error', 'OnboardController show error: ' . $e->getMessage());
            return $this->respondError('조회 중 오류가 발생했습니다: ' . $e->getMessage(), ResponseInterface::HTTP_INTERNAL_SERVER_ERROR);
        }
    }

    /**
     * 선상 삭제 (soft delete)
     * DELETE /api/onboard/:id
     */
    public function delete($id = null)
    {
        $auth = $this->requireAuth();
        if ($auth instanceof ResponseInterface) {
            return $auth;
        }

        if (empty($id)) {
            return $this->respondError('ID가 필요합니다.', ResponseInterface::HTTP_BAD_REQUEST);
        }

        try {
            $db = $this->getDB();

            $exists = $db->table($this->table)
                ->where('id', (int) $id)
                ->where('deleted_YN', 'N')
                ->countAllResults();
            if ($exists === 0) {
                return $this->respondError('해당 선상을 찾을 수 없습니다.', ResponseInterface::HTTP_NOT_FOUND);
            }

            $db->table($this->table)
                ->where('id', (int) $id)
                ->update([
                    'deleted_YN' => 'Y',
                    'updated_at' => date('Y-m-d H:i:s'),
                ]);

            return $this->respondSuccess(null, '선상이 삭제되었습니다.');
        } catch (\Exception $e) {
            log_message('error', 'OnboardController delete error: ' . $e->getMessage());
            return $this->respondError('삭제 중 오류가 발생했습니다: ' . $e->getMessage(), ResponseInterface::HTTP_INTERNAL_SERVER_ERROR);
        }
    }

    /**
     * 값 암호화 (빈 값은 그대로 빈 문자열)
     */
    private function encryptValue(string $plain): string
    {
        if ($plain === '') {
            return '';
        }
        $encrypter = \Config\Services::encrypter();
        return base64_encode($encrypter->encrypt($plain));
    }

    /**
     * 값 복호화 (실패/빈 값이면 빈 문자열)
     */
    private function decryptValue(?string $cipher): string
    {
        if (empty($cipher)) {
            return '';
        }
        try {
            $encrypter = \Config\Services::encrypter();
            return $encrypter->decrypt(base64_decode($cipher));
        } catch (\Exception $e) {
            log_message('error', 'Account decrypt error: ' . $e->getMessage());
            return '';
        }
    }
}