package com.taoke.autopay.controller.admin.credit;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.TypeAdapter;
import com.google.gson.stream.JsonReader;
import com.google.gson.stream.JsonWriter;
import com.taoke.autopay.dao.credit.ExchangeRateMapper;
import com.taoke.autopay.entity.credit.ExchangeRate;
import com.taoke.autopay.service.credit.ExchangeRateService;
import com.taoke.autopay.utils.JsonUtil;
import com.taoke.autopay.utils.TimeUtil;
import net.sf.json.JSONObject;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.annotation.Resource;
import java.io.IOException;
import java.math.BigDecimal;
import java.util.Date;
import java.util.List;

@Controller
@RequestMapping("/admin/api/credit/exchangeRate")
public class CreditExchangeRateAdminController {

    private Gson gson = new GsonBuilder().registerTypeAdapter(Date.class, new TypeAdapter<Date>() {
                @Override
                public void write(JsonWriter out, Date value) throws IOException {
                    String desc = "";
                    if (value != null) {
                        // 判断是否是同一天
                        desc = TimeUtil.getGernalTime(value.getTime(), "yyyy-MM-dd HH:mm:ss");
                        out.value(desc);
                    } else {
                        out.value("");
                    }
                }

                @Override
                public Date read(JsonReader in) throws IOException {
                    return new Date();
                }
            }).registerTypeAdapter(BigDecimal.class, new TypeAdapter<BigDecimal>() {
                @Override
                public void write(JsonWriter out, BigDecimal value) throws IOException {
                    if (value != null) {
                        out.value(value.toString());
                    } else {
                        out.value("");
                    }
                }

                @Override
                public BigDecimal read(JsonReader in) throws IOException {
                    return new BigDecimal("0.00");
                }
            }).registerTypeAdapter(ExchangeRate.ExchangeRateType.class, new TypeAdapter<ExchangeRate.ExchangeRateType>() {
                @Override
                public void write(JsonWriter out, ExchangeRate.ExchangeRateType value) throws IOException {
                    if (value != null) {
                        out.value(value.getDesc());
                    } else {
                        out.value("");
                    }
                }

                @Override
                public ExchangeRate.ExchangeRateType read(JsonReader in) throws IOException {
                    return ExchangeRate.ExchangeRateType.GENERAL_EXCHANGE;
                }
            })

            .create();

    @Resource
    private ExchangeRateService exchangeRateService;

    /**
     * 获取积分汇率列表
     */
    @ResponseBody
    @RequestMapping("list")
    public String listExchangeRates(int page, int limit) {
        List<ExchangeRate> exchangeRates = exchangeRateService.listExchangeRates(ExchangeRateMapper.DaoQuery.builder()
                .start((long) (page - 1) * limit)
                .count(limit)
                .build());
        long count = exchangeRateService.countExchangeRates(ExchangeRateMapper.DaoQuery.builder().build());
        JSONObject root = new JSONObject();
        root.put("list", gson.toJson(exchangeRates));
        root.put("count", count);
        return JsonUtil.loadTrueResult(root);
    }

    /**
     * 获取积分汇率详情
     */
    @ResponseBody
    @RequestMapping("getDetail")
    public String getDetail(Long id) {
        ExchangeRate exchangeRate = exchangeRateService.selectById(id);
        if (exchangeRate == null) {
            return JsonUtil.loadFalseResult("积分汇率不存在");
        }
        return JsonUtil.loadTrueResult(gson.toJson(exchangeRate));
    }

    /**
     * 更新积分汇率
     */
    @ResponseBody
    @RequestMapping("update")
    public String updateExchangeRate(Long id, BigDecimal rate) {
        int success = exchangeRateService.updateExchangeRate(ExchangeRate.builder()
                .id(id)
                .rate(rate)
                .build());
        if (success > 0) {
            return JsonUtil.loadTrueResult("更新成功");
        } else {
            return JsonUtil.loadFalseResult("更新失败");
        }
    }
}