package money

import (
	"base-go-v2/internal/db"
	response "base-go-v2/internal/reponse"
	"base-go-v2/internal/router"
	"base-go-v2/internal/utils/idgen"
	"base-go-v2/internal/utils/mapx"
	"fmt"
	"github.com/shopspring/decimal"
)

func InitMoneyRouter(r *router.Router) {
	group := r.Group("money")
	group.GET("/category", getUserCategory)
	group.POST("/insert", insertMoneyRecord)
	group.POST("/update", updateMoneyRecord)
	group.POST("/delete", deleteMoneyRecord)
}

// InitDefaultCategories 初始化系统默认分类到用户分类表
func InitDefaultCategories(userID int64) error {
	fmt.Println("进入 InitDefaultCategories ===")

	// 1. 查询系统分类表
	sysCategories, err := db.FindAll("money_sys_category", "sort_number")
	if err != nil {
		return err
	}

	fmt.Printf("系统分类数量: %d\n", len(sysCategories))

	// 2. 构建批量插入数据
	//userCategories := make([]mapx.M, 0, len(sysCategories))
	userCategories := mapx.NewArr(len(sysCategories))

	for i, row := range sysCategories {
		m := mapx.New().SetKV(
			"id", idgen.NextId(),
			"user_id", userID,
			"name", row.GetString("name"),
			"icon", row.GetString("icon"),
			"type", row.GetInt("type"),
			"sort_number", row.GetInt("sort_number"),
		)
		fmt.Printf("用户分类 %d: %+v\n", i+1, m)
		userCategories = append(userCategories, m)
	}

	// 3. 批量插入到用户分类表
	if _, err := db.InsertBatch("money_user_category", userCategories); err != nil {
		return err
	}

	fmt.Println("初始化用户分类成功！")
	return nil
}

func getUserCategory(c *router.Context) error {
	userId := c.GetUserID()

	// 查询当前用户的分类
	userCategories, err := db.Find("money_user_category", mapx.New().Set("user_id", userId), "sort_number ASC")
	if err != nil {
		return c.AddError(err)
	}

	// 按 type 分组
	result := map[string][]mapx.M{
		"income":  {},
		"expense": {},
	}

	for _, cat := range userCategories {
		switch cat.GetInt("type") {
		case 0:
			result["income"] = append(result["income"], cat)
		case 1:
			result["expense"] = append(result["expense"], cat)
		}
	}

	return response.Success(c).Data(result).Send()
}

func insertMoneyRecord(c *router.Context) error {
	bodyData, err := c.GetBodyWithRequired("category_id", "amount", "record_time")
	if err != nil {
		return c.AddError(err)
	}

	categoryId := bodyData.GetInt64("category_id")
	recordTime := bodyData.GetString("record_time")
	amountStr := bodyData.GetString("amount")
	remark := bodyData.GetString("remark")

	amountDecimal, err := decimal.NewFromString(amountStr)
	if err != nil {
		return c.AddError(err)
	}

	newRecord := mapx.New().SetKV("id", idgen.NextId(),
		"category_id", categoryId,
		"user_id", c.GetUserID(),
		"amount", amountDecimal,
		"remark", remark,
		"record_time", recordTime,
	)

	insertOne, err := db.InsertOne("money_record", newRecord)
	if err != nil {
		return response.Fail(c).Message("新增失败").Send()
	}
	if insertOne != 1 {
		return response.Fail(c).Message("新增失败").Send()
	}

	return response.Success(c).Data(newRecord).Message("新增成功").Send()
}

func updateMoneyRecord(c *router.Context) error {
	bodyData, err := c.GetBodyWithRequired("id")
	if err != nil {
		return c.AddError(err)
	}

	recordId := bodyData.GetInt64("id")

	record, err := db.GetOne("money_record", "id", recordId)
	if err != nil {
		return c.AddError(err)
	}
	if record == nil {
		return response.Fail(c).Message("该条账单不存在").Send()
	}

	categoryId := bodyData.GetInt64("category_id")
	recordTime := bodyData.GetString("record_time")
	amountStr := bodyData.GetString("amount")
	remark := bodyData.GetString("remark")

	updateRecord := mapx.New().SetKV("id", recordId)

	if record.GetInt64("category_id") != categoryId {
		updateRecord.SetKV("category_id", categoryId)
	}

	if record.GetString("record_time") != recordTime {
		updateRecord.SetKV("record_time", recordTime)
	}

	if record.GetString("amount") != amountStr {
		amountDecimal, err := decimal.NewFromString(amountStr)
		if err != nil {
			return c.AddError(err)
		}
		updateRecord.SetKV("amount", amountDecimal)
	}

	if record.GetString("remark") != remark {
		updateRecord.SetKV("remark", remark)
	}

	updateOne, err := db.UpdateOne("money_record", "id", recordId, updateRecord)
	if err != nil {
		return c.AddError(err)
	}
	if updateOne != 1 {
		return response.Fail(c).Message("更新失败").Send()
	}

	return response.Success(c).Message("更新成功").Send()
}

func deleteMoneyRecord(c *router.Context) error {
	bodyData, err := c.GetBodyWithRequired("id")
	if err != nil {
		return c.AddError(err)
	}
	recordId := bodyData.GetInt64("id")

	deleteOne, err := db.DeleteOne("money_record", "id", recordId)
	if err != nil {
		return c.AddError(err)
	}
	if deleteOne != 1 {
		return response.Fail(c).Message("删除失败").Send()
	}

	return response.Success(c).Message("删除成功").Send()
}