package org.linlinjava.litemall.admin.web;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.linlinjava.litemall.admin.annotation.LoginAdmin;
import org.linlinjava.litemall.admin.util.CatVo;
import org.linlinjava.litemall.core.validator.Order;
import org.linlinjava.litemall.core.validator.Sort;
import org.linlinjava.litemall.db.domain.LitemallCategory;
import org.linlinjava.litemall.db.service.LitemallCategoryService;
import org.linlinjava.litemall.core.util.ResponseUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import javax.validation.constraints.NotNull;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@RestController
@RequestMapping("/admin/category")
@Validated
public class AdminCategoryController {
    private final Log logger = LogFactory.getLog(AdminCategoryController.class);

    @Autowired
    private LitemallCategoryService categoryService;

    @GetMapping("/list")
    public Object list(@LoginAdmin Integer adminId,
                       String id, String name,
                       @RequestParam(defaultValue = "1") Integer page,
                       @RequestParam(defaultValue = "10") Integer limit,
                       @Sort @RequestParam(defaultValue = "add_time") String sort,
                       @Order @RequestParam(defaultValue = "desc") String order){
        if(adminId == null){
            return ResponseUtil.unlogin();
        }

        List<LitemallCategory> collectList = categoryService.querySelective(id, name, page, limit, sort, order);
        int total = categoryService.countSelective(id, name, page, limit, sort, order);
        Map<String, Object> data = new HashMap<>();
        data.put("total", total);
        data.put("items", collectList);

        return ResponseUtil.ok(data);
    }

    private Object validate(LitemallCategory category) {
        String name = category.getName();
        if(StringUtils.isEmpty(name)){
            return ResponseUtil.badArgument();
        }

        String level = category.getLevel();
        if(StringUtils.isEmpty(level)){
            return ResponseUtil.badArgument();
        }
        if(!level.equals("L1") && !level.equals("L2")){
            return ResponseUtil.badArgumentValue();
        }

        Integer pid = category.getPid();
        if(pid == null){
            return ResponseUtil.badArgument();
        }

        return null;
    }

    @PostMapping("/create")
    public Object create(@LoginAdmin Integer adminId, @RequestBody LitemallCategory category){
        if(adminId == null){
            return ResponseUtil.unlogin();
        }
        Object error = validate(category);
        if(error != null){
            return error;
        }
        category.setAddTime(LocalDateTime.now());
        categoryService.add(category);
        return ResponseUtil.ok();
    }

    @GetMapping("/read")
    public Object read(@LoginAdmin Integer adminId, @NotNull Integer id){
        if(adminId == null){
            return ResponseUtil.unlogin();
        }

        LitemallCategory category = categoryService.findById(id);
        return ResponseUtil.ok(category);
    }

    @PostMapping("/update")
    public Object update(@LoginAdmin Integer adminId, @RequestBody LitemallCategory category){
        if(adminId == null){
            return ResponseUtil.unlogin();
        }
        Object error = validate(category);
        if(error != null){
            return error;
        }

        if(categoryService.updateById(category) == 0){
            return ResponseUtil.updatedDataFailed();
        }
        return ResponseUtil.ok();
    }

    @PostMapping("/delete")
    public Object delete(@LoginAdmin Integer adminId, @RequestBody LitemallCategory category){
        if(adminId == null){
            return ResponseUtil.unlogin();
        }
        Integer id = category.getId();
        if(id == null){
            return ResponseUtil.badArgument();
        }
        categoryService.deleteById(id);
        return ResponseUtil.ok();
    }

    @GetMapping("/l1")
    public Object catL1(@LoginAdmin Integer adminId) {
        if (adminId == null) {
            return ResponseUtil.unlogin();
        }

        // 所有一级分类目录
        List<LitemallCategory> l1CatList = categoryService.queryL1();
        List<Map<String, Object>> data = new ArrayList<>(l1CatList.size());
        for(LitemallCategory category : l1CatList){
            Map<String, Object> d = new HashMap<>(2);
            d.put("value", category.getId());
            d.put("label", category.getName());
            data.add(d);
        }
        return ResponseUtil.ok(data);
    }
}
