package com.gcsc.guide.service;

import com.gcsc.guide.dto.RegistrationSettingsResponse;
import com.gcsc.guide.dto.RoleResponse;
import com.gcsc.guide.entity.AppSetting;
import com.gcsc.guide.repository.AppSettingRepository;
import com.gcsc.guide.repository.RoleRepository;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

@Service
@RequiredArgsConstructor
public class SettingsService {

    private static final String AUTO_APPROVE_KEY = "registration.auto-approve";

    private final AppSettingRepository appSettingRepository;
    private final RoleRepository roleRepository;

    @Transactional(readOnly = true)
    public boolean isAutoApproveEnabled() {
        return appSettingRepository.findBySettingKey(AUTO_APPROVE_KEY)
            .map(s -> Boolean.parseBoolean(s.getSettingValue()))
            .orElse(false);
    }

    @Transactional(readOnly = true)
    public RegistrationSettingsResponse getRegistrationSettings() {
        boolean autoApprove = isAutoApproveEnabled();
        List<RoleResponse> defaultRoles = roleRepository.findByDefaultGrantTrue().stream()
            .map(RoleResponse::from)
            .toList();
        return new RegistrationSettingsResponse(autoApprove, defaultRoles);
    }

    @Transactional
    public RegistrationSettingsResponse updateAutoApprove(boolean autoApprove) {
        AppSetting setting = appSettingRepository.findBySettingKey(AUTO_APPROVE_KEY)
            .orElseGet(() -> new AppSetting(AUTO_APPROVE_KEY, "false", "신규 가입자 자동 승인 여부"));
        setting.updateValue(String.valueOf(autoApprove));
        appSettingRepository.save(setting);
        return getRegistrationSettings();
    }
}