package handler

import (
	"net/http"
	"os"
	"path/filepath"
	"strings"

	"github.com/gin-gonic/gin"

	"billai-server/config"
	"billai-server/model"
	"billai-server/service"
)

// Review 获取需要复核的记录
func Review(c *gin.Context) {
	// 获取文件名参数
	fileName := c.Query("file")
	if fileName == "" {
		c.JSON(http.StatusBadRequest, model.ReviewResponse{
			Result:  false,
			Message: "请提供文件名参数 (file)",
		})
		return
	}

	// 构建文件路径
	outputDirAbs := config.ResolvePath(config.Global.OutputDir)
	filePath := filepath.Join(outputDirAbs, fileName)

	// 检查文件是否存在
	if _, err := os.Stat(filePath); os.IsNotExist(err) {
		c.JSON(http.StatusNotFound, model.ReviewResponse{
			Result:  false,
			Message: "文件不存在: " + fileName,
		})
		return
	}

	// 判断文件格式
	format := "csv"
	if strings.HasSuffix(fileName, ".json") {
		format = "json"
	}

	// 提取需要复核的记录
	records := service.ExtractNeedsReview(filePath, format)

	// 统计高低优先级数量
	highCount := 0
	lowCount := 0
	for _, r := range records {
		if r.ReviewLevel == "HIGH" {
			highCount++
		} else if r.ReviewLevel == "LOW" {
			lowCount++
		}
	}

	c.JSON(http.StatusOK, model.ReviewResponse{
		Result:  true,
		Message: "获取成功",
		Data: &model.ReviewData{
			Total:   len(records),
			High:    highCount,
			Low:     lowCount,
			Records: records,
		},
	})
}