package functions

import (
	"github.com/gin-gonic/gin"

	"git.x2erp.com/qdy/go-base/mycsv"
	"git.x2erp.com/qdy/go-base/types"
	"git.x2erp.com/qdy/go-db/factory"
)

// 创建带 db 的 handler
func QueryToCSV(dbFactory *factory.DBFactory) func(c *gin.Context, req types.QueryRequest) {
	return func(c *gin.Context, req types.QueryRequest) {

		csvData, err := dbFactory.QueryToCSV(req.SQL)

		if err != nil {
			// 错误时也返回CSV格式，而不是JSON
			errorCSV := mycsv.CreateStringToCSV(err.Error())
			c.Header("Content-Type", "text/csv; charset=utf-8")
			c.Header("X-Error", "true") // 可选：通过header标记这是错误响应
			c.Data(400, "text/csv; charset=utf-8", errorCSV)
			return
		}

		// 成功返回CSV数据
		c.Header("Content-Type", "text/csv; charset=utf-8")
		c.Data(200, "text/csv; charset=utf-8", csvData)
	}
}