package com.jeesite.modules.mes.service;

import java.text.Collator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;

import javax.annotation.Resource;

import org.apache.shiro.subject.Subject;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.jeesite.common.cache.CacheUtils;
import com.jeesite.common.collect.ListUtils;
import com.jeesite.common.collect.MapUtils;
import com.jeesite.common.config.Global;
import com.jeesite.common.entity.Page;
import com.jeesite.common.lang.StringUtils;
import com.jeesite.common.service.CrudService;
import com.jeesite.modules.file.entity.FileUpload;
import com.jeesite.modules.file.service.FileUploadService;
import com.jeesite.modules.file.utils.FileUploadUtils;
import com.jeesite.modules.mes.dao.MesIconsDao;
import com.jeesite.modules.mes.entity.MesIcons;
import com.jeesite.modules.mes.entity.MesIconsCategory;
import com.jeesite.modules.sys.utils.UserUtils;

/**
 * 功能模块Service
 * @author hzd
 * @version 2023-07-05
 */
@Service
public class MesIconsService extends CrudService<MesIconsDao, MesIcons> {

	/** 参数键：PDA 功能模块是否按分类分组（0=扁平 1=分组） */
	public static final String CONFIG_ICONS_GROUPED = "mes.icons.grouped";

	@Autowired
	private MesIconsCategoryService mesIconsCategoryService;

	@Resource
	private FileUploadService fileUploadService;
	/**
	 * 获取单条数据
	 * @param mesIcons
	 * @return
	 */
	@Override
	public MesIcons get(MesIcons mesIcons) {
		return super.get(mesIcons);
	}
	
	/**
	 * 查询分页数据
	 * @param mesIcons 查询条件
	 * @param mesIcons.page 分页对象
	 * @return
	 */
	@Override
	public Page<MesIcons> findPage(MesIcons mesIcons) {
		return super.findPage(mesIcons);
	}
	
	/**
	 * 查询列表数据
	 * @param mesIcons
	 * @return
	 */
	@Override
	public List<MesIcons> findList(MesIcons mesIcons) {
		return super.findList(mesIcons);
	}
	
	/**
	 * 保存数据（插入或更新）
	 * @param mesIcons
	 */
	@Override
	@Transactional
	public void save(MesIcons mesIcons) {
		if (StringUtils.isBlank(mesIcons.getCategoryId())) {
			mesIcons.setCategoryId(MesIconsCategory.DEFAULT_ID);
		}
		super.save(mesIcons);
		// 保存上传图片
		FileUploadUtils.saveFileUpload(mesIcons, mesIcons.getId(), "mesIcons_image");
		CacheUtils.put("mes_icons","icons","");
	}
	
	/**
	 * 更新状态
	 * @param mesIcons
	 */
	@Override
	@Transactional
	public void updateStatus(MesIcons mesIcons) {
		super.updateStatus(mesIcons);
		CacheUtils.put("mes_icons","icons","");
	}
	
	/**
	 * 删除数据
	 * @param mesIcons
	 */
	@Override
	@Transactional
	public void delete(MesIcons mesIcons) {
		super.delete(mesIcons);
		CacheUtils.put("mes_icons","icons","");
	}

	/**
	 * PDA 功能模块列表（分组 / 扁平由参数设置 mes.icons.grouped 控制）
	 * @param mesIcons 查询条件
	 * @param host 图片 URL 前缀
	 */
	public List<Map<String, Object>> findIconsData(MesIcons mesIcons, String host) {
		return findIconsData(mesIcons, host, isIconsGroupedEnabled());
	}

	/**
	 * 是否启用按分类分组（参数设置：mes.icons.grouped，1=分组，0=扁平）
	 */
	public boolean isIconsGroupedEnabled() {
		return "1".equals(Global.getConfig(CONFIG_ICONS_GROUPED, "1"));
	}

	/**
	 * PDA 功能模块列表
	 * @param grouped true=按分类分组，false=扁平列表（兼容旧版）
	 */
	private List<Map<String, Object>> findIconsData(MesIcons mesIcons, String host, boolean grouped) {
		List<MesIcons> list = findList(mesIcons);
		Subject subject = UserUtils.getSubject();
		if (!grouped) {
			return buildFlatIcons(list, host, subject);
		}
		return buildGroupedIcons(list, host, subject);
	}

	/**
	 * 扁平列表（旧版格式）
	 */
	private List<Map<String, Object>> buildFlatIcons(List<MesIcons> list, String host, Subject subject) {
		List<Map<String, Object>> mapList = ListUtils.newArrayList();
		for (MesIcons mi : list) {
			if (subject.isPermitted(mi.getAuth())) {
				mapList.add(buildModuleMap(mi, host));
			}
		}
		return mapList;
	}

	/**
	 * 按分类分组列表（新版格式）
	 */
	private List<Map<String, Object>> buildGroupedIcons(List<MesIcons> list, String host, Subject subject) {
		MesIconsCategory categoryQuery = new MesIconsCategory();
		categoryQuery.setStatus(MesIconsCategory.STATUS_NORMAL);
		List<MesIconsCategory> categories = mesIconsCategoryService.findList(categoryQuery);

		Map<String, List<Map<String, Object>>> grouped = new LinkedHashMap<>();
		for (MesIconsCategory category : categories) {
			grouped.put(category.getId(), ListUtils.newArrayList());
		}

		for (MesIcons mi : list) {
			if (!subject.isPermitted(mi.getAuth())) {
				continue;
			}
			String categoryId = resolveCategoryId(mi.getCategoryId(), grouped);
			grouped.computeIfAbsent(categoryId, k -> ListUtils.newArrayList()).add(buildModuleMap(mi, host));
		}

		List<Map<String, Object>> result = ListUtils.newArrayList();
		for (MesIconsCategory category : categories) {
			List<Map<String, Object>> children = grouped.get(category.getId());
			if (ListUtils.isEmpty(children)) {
				continue;
			}
			sortChildrenByTitle(children);
			Map<String, Object> categoryMap = MapUtils.newHashMap();
			categoryMap.put("categoryId", category.getId());
			categoryMap.put("title", category.getTitle());
			categoryMap.put("sort", category.getSortOrder() != null ? category.getSortOrder() : 0);
			categoryMap.put("children", children);
			result.add(categoryMap);
		}
		return result;
	}

	/**
	 * children 按 title 字典序排列（中文按拼音）
	 */
	private void sortChildrenByTitle(List<Map<String, Object>> children) {
		if (ListUtils.isEmpty(children) || children.size() <= 1) {
			return;
		}
		Collator collator = Collator.getInstance(Locale.CHINA);
		collator.setStrength(Collator.PRIMARY);
		children.sort((a, b) -> collator.compare(
				StringUtils.defaultString((String) a.get("title")),
				StringUtils.defaultString((String) b.get("title"))));
	}

	/**
	 * 解析模块所属分类，无效分类归入「其他」
	 */
	private String resolveCategoryId(String categoryId, Map<String, List<Map<String, Object>>> grouped) {
		if (StringUtils.isNotBlank(categoryId) && grouped.containsKey(categoryId)) {
			return categoryId;
		}
		return MesIconsCategory.DEFAULT_ID;
	}

	/**
	 * 构建单个功能模块数据
	 */
	private Map<String, Object> buildModuleMap(MesIcons mi, String host) {
		Map<String, Object> map = MapUtils.newHashMap();
		map.put("title", mi.getTitle());
		map.put("mode", mi.getMode());
		map.put("img", buildModuleImageUrl(mi.getId(), host));
		return map;
	}

	/**
	 * 获取模块图标完整 URL
	 */
	private String buildModuleImageUrl(String bizKey, String host) {
		FileUpload fu = new FileUpload();
		fu.setBizKey(bizKey);
		fu.setBizType("mesIcons_image");
		List<FileUpload> finfo = fileUploadService.findList(fu);
		if (ListUtils.isNotEmpty(finfo)) {
			return host + finfo.get(0).getFileUrl();
		}
		return host;
	}
	
}