<?php

namespace App\Controllers\Api;

use CodeIgniter\HTTP\ResponseInterface;

class FishingFieldController extends BaseApiController
{
    protected $format = 'json';
    protected $table = 'fishing_field';

    /**
     * 낚시분야 목록
     * GET /api/field/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')); // 'Y' or 'N' 필터 (선택)

            $db = $this->getDB();
            $builder = $db->table($this->table);

            // soft delete 제외
            $builder->where('deleted_YN', 'N');

            if ($search !== '') {
                $builder->like('name', $search);
            }
            if ($status === 'Y' || $status === 'N') {
                $builder->where('status_YN', $status);
            }

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

            $items = $builder
                ->select('id, name, weight, status_YN, created_at, updated_at')
                ->orderBy('id', 'DESC')
                ->limit($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', 'FishingFieldController index error: ' . $e->getMessage());
            return $this->respondError('목록 조회 중 오류가 발생했습니다: ' . $e->getMessage(), ResponseInterface::HTTP_INTERNAL_SERVER_ERROR);
        }
    }

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

        try {
            // JSON 요청 우선, fallback 으로 form-encoded 도 허용
            $payload = $this->request->getJSON(true);
            if (!is_array($payload) || empty($payload)) {
                $payload = $this->request->getPost() ?? [];
            }

            $name = trim((string) ($payload['name'] ?? ''));
            $weightRaw = trim((string) ($payload['weight'] ?? ''));

            // 분야명 검증: 1~30자, 필수
            if ($name === '') {
                return $this->respondError('분야명을 입력하세요.', ResponseInterface::HTTP_BAD_REQUEST);
            }
            if (mb_strlen($name) > 30) {
                return $this->respondError('분야명은 30자 이내로 입력하세요.', ResponseInterface::HTTP_BAD_REQUEST);
            }

            // 가중치 검증: 0.0 ~ 1.0, 소수점 1자리
            if ($weightRaw === '' || !preg_match('/^(0(\.\d)?|1(\.0)?)$/', $weightRaw)) {
                return $this->respondError('가중치는 0.0 ~ 1.0 사이 소수점 1자리로 입력하세요.', ResponseInterface::HTTP_BAD_REQUEST);
            }

            // 소수점 1자리로 정규화 (예: "1" → "1.0", ".5" → "0.5")
            $weight = number_format((float) $weightRaw, 1, '.', '');

            $db = $this->getDB();
            $builder = $db->table($this->table);

            // 중복 검사
            $exists = $builder->where('name', $name)->countAllResults();
            if ($exists > 0) {
                return $this->respondError('이미 등록된 분야명입니다.', ResponseInterface::HTTP_CONFLICT);
            }

            $now = date('Y-m-d H:i:s');
            $insertData = [
                'name'       => $name,
                'weight'     => $weight,
                'created_at' => $now,
            ];

            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();

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

    /**
     * 낚시분야 상세 조회
     * GET /api/field/: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)
                ->select('id, name, weight, status_YN, created_at, updated_at')
                ->where('id', (int) $id)
                ->where('deleted_YN', 'N')
                ->get()
                ->getRow();

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

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

    /**
     * 낚시분야 수정
     * PUT /api/field/:id
     */
    public function update($id = null)
    {
        $auth = $this->requireAuth();
        if ($auth instanceof ResponseInterface) {
            return $auth;
        }

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

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

            $name = trim((string) ($payload['name'] ?? ''));
            $weightRaw = trim((string) ($payload['weight'] ?? ''));
            $status = trim((string) ($payload['status_YN'] ?? 'Y'));

            // 분야명 검증
            if ($name === '') {
                return $this->respondError('분야명을 입력하세요.', ResponseInterface::HTTP_BAD_REQUEST);
            }
            if (mb_strlen($name) > 30) {
                return $this->respondError('분야명은 30자 이내로 입력하세요.', ResponseInterface::HTTP_BAD_REQUEST);
            }

            // 가중치 검증
            if ($weightRaw === '' || !preg_match('/^(0(\.\d)?|1(\.0)?)$/', $weightRaw)) {
                return $this->respondError('가중치는 0.0 ~ 1.0 사이 소수점 1자리로 입력하세요.', ResponseInterface::HTTP_BAD_REQUEST);
            }
            $weight = number_format((float) $weightRaw, 1, '.', '');

            // 상태 검증
            if ($status !== 'Y' && $status !== 'N') {
                return $this->respondError('상태값이 올바르지 않습니다.', ResponseInterface::HTTP_BAD_REQUEST);
            }

            $db = $this->getDB();
            $builder = $db->table($this->table);

            // 대상 행 존재 확인
            $exists = $builder->where('id', (int) $id)->where('deleted_YN', 'N')->countAllResults(false);
            if ($exists === 0) {
                return $this->respondError('해당 낚시분야를 찾을 수 없습니다.', ResponseInterface::HTTP_NOT_FOUND);
            }
            $builder->resetQuery();

            // 중복 검사 (자기 자신 제외)
            $dupe = $db->table($this->table)
                ->where('name', $name)
                ->where('id !=', (int) $id)
                ->where('deleted_YN', 'N')
                ->countAllResults();
            if ($dupe > 0) {
                return $this->respondError('이미 등록된 분야명입니다.', ResponseInterface::HTTP_CONFLICT);
            }

            $updateData = [
                'name'       => $name,
                'weight'     => $weight,
                'status_YN'  => $status,
                'updated_at' => date('Y-m-d H:i:s'),
            ];

            $db->table($this->table)->where('id', (int) $id)->update($updateData);

            $row = $db->table($this->table)->where('id', (int) $id)->get()->getRow();
            return $this->respondSuccess($row, '낚시분야가 수정되었습니다.');
        } catch (\Exception $e) {
            log_message('error', 'FishingFieldController update error: ' . $e->getMessage());
            return $this->respondError('수정 중 오류가 발생했습니다: ' . $e->getMessage(), ResponseInterface::HTTP_INTERNAL_SERVER_ERROR);
        }
    }

    /**
     * 낚시분야 삭제 (soft delete)
     * DELETE /api/field/: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 낚시분야를 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, '낚시분야가 삭제되었습니다.');
        } catch (\Exception $e) {
            log_message('error', 'FishingFieldController delete error: ' . $e->getMessage());
            return $this->respondError('삭제 중 오류가 발생했습니다: ' . $e->getMessage(), ResponseInterface::HTTP_INTERNAL_SERVER_ERROR);
        }
    }
}