package controllers

import (
	"encoding/json"
	"shudao-chat-go/models"
	"shudao-chat-go/utils"

	"github.com/beego/beego/v2/server/web"
)

type PointsController struct {
	web.Controller
}

// GetBalance 获取用户积分余额
func (c *PointsController) GetBalance() {
	userInfo, err := utils.GetUserInfoFromContext(c.Ctx.Input.GetData("userInfo"))
	if err != nil {
		c.Data["json"] = map[string]interface{}{
			"statusCode": 401,
			"msg":        "获取用户信息失败: " + err.Error(),
		}
		c.ServeJSON()
		return
	}

	var userData models.UserData
	if err := models.DB.Where("accountID = ?", userInfo.AccountID).First(&userData).Error; err != nil {
		c.Data["json"] = map[string]interface{}{
			"statusCode": 404,
			"msg":        "未找到用户数据",
		}
		c.ServeJSON()
		return
	}

	c.Data["json"] = map[string]interface{}{
		"statusCode": 200,
		"msg":        "success",
		"data": map[string]interface{}{
			"points": userData.Points,
		},
	}
	c.ServeJSON()
}

// ConsumePointsRequest 消费积分请求
type ConsumePointsRequest struct {
	FileName string `json:"file_name"`
	FileURL  string `json:"file_url"`
}

// ConsumePoints 消费积分下载文件
func (c *PointsController) ConsumePoints() {
	userInfo, err := utils.GetUserInfoFromContext(c.Ctx.Input.GetData("userInfo"))
	if err != nil {
		c.Data["json"] = map[string]interface{}{
			"statusCode": 401,
			"msg":        "获取用户信息失败: " + err.Error(),
		}
		c.ServeJSON()
		return
	}

	var req ConsumePointsRequest
	if err := json.Unmarshal(c.Ctx.Input.RequestBody, &req); err != nil {
		c.Data["json"] = map[string]interface{}{
			"statusCode": 400,
			"msg":        "JSON解析失败: " + err.Error(),
		}
		c.ServeJSON()
		return
	}

	// 查询用户数据
	var userData models.UserData
	if err := models.DB.Where("accountID = ?", userInfo.AccountID).First(&userData).Error; err != nil {
		c.Data["json"] = map[string]interface{}{
			"statusCode": 404,
			"msg":        "未找到用户数据",
		}
		c.ServeJSON()
		return
	}

	// 检查积分是否足够（需要10积分）
	const requiredPoints = 10
	if userData.Points < requiredPoints {
		c.Data["json"] = map[string]interface{}{
			"statusCode": 400,
			"msg":        "积分不足，下载需要10积分",
			"data": map[string]interface{}{
				"current_points":  userData.Points,
				"required_points": requiredPoints,
			},
		}
		c.ServeJSON()
		return
	}

	// 开启事务
	tx := models.DB.Begin()

	// 扣减积分
	newBalance := userData.Points - requiredPoints
	if err := tx.Model(&models.UserData{}).Where("id = ?", userData.ID).Update("points", newBalance).Error; err != nil {
		tx.Rollback()
		c.Data["json"] = map[string]interface{}{
			"statusCode": 500,
			"msg":        "积分扣减失败: " + err.Error(),
		}
		c.ServeJSON()
		return
	}

	// 创建消费记录 - 使用原始SQL避免GORM时间字段问题
	result := tx.Exec(
		"INSERT INTO points_consumption_log (user_id, file_name, file_url, points_consumed, balance_after) VALUES (?, ?, ?, ?, ?)",
		userInfo.AccountID, req.FileName, req.FileURL, requiredPoints, newBalance,
	)
	if result.Error != nil {
		tx.Rollback()
		c.Data["json"] = map[string]interface{}{
			"statusCode": 500,
			"msg":        "创建消费记录失败: " + result.Error.Error(),
		}
		c.ServeJSON()
		return
	}

	tx.Commit()

	c.Data["json"] = map[string]interface{}{
		"statusCode": 200,
		"msg":        "success",
		"data": map[string]interface{}{
			"new_balance":     newBalance,
			"points_consumed": requiredPoints,
		},
	}
	c.ServeJSON()
}

// GetConsumptionHistory 获取消费记录
func (c *PointsController) GetConsumptionHistory() {
	userInfo, err := utils.GetUserInfoFromContext(c.Ctx.Input.GetData("userInfo"))
	if err != nil {
		c.Data["json"] = map[string]interface{}{
			"statusCode": 401,
			"msg":        "获取用户信息失败: " + err.Error(),
		}
		c.ServeJSON()
		return
	}

	page, _ := c.GetInt("page", 1)
	pageSize, _ := c.GetInt("pageSize", 10)

	logs, total, err := models.GetConsumptionHistory(userInfo.AccountID, page, pageSize)
	if err != nil {
		c.Data["json"] = map[string]interface{}{
			"statusCode": 500,
			"msg":        "获取消费记录失败: " + err.Error(),
		}
		c.ServeJSON()
		return
	}

	c.Data["json"] = map[string]interface{}{
		"statusCode": 200,
		"msg":        "success",
		"data": map[string]interface{}{
			"list":     logs,
			"total":    total,
			"page":     page,
			"pageSize": pageSize,
		},
	}
	c.ServeJSON()
}