first commit

services/com_service.go

@@ -0,0 +1,59 @@
+package services
+
+import (
+	"Quincy_admin/repositories"
+	"Quincy_admin/schemas"
+	"bufio"
+	"log"
+	"os"
+	"strings"
+)
+
+type CommonService struct {
+	repo *repositories.CommonRepository
+}
+
+func NewCommonService(repo *repositories.CommonRepository) *CommonService {
+	return &CommonService{repo: repo}
+}
+
+// GetLoginLogList 获取登录日志列表
+func (s *CommonService) GetLoginLogList(req *schemas.LoginLogListRequest) ([]*schemas.LoginLog, int64, error) {
+	return s.repo.GetLoginLogList(req)
+}
+
+// ReadLastLines 读取文件最后几行
+func (s *CommonService) ReadLastLines(filepath string, lines int) (string, error) {
+	file, err := os.Open(filepath)
+	if err != nil {
+		return "", err
+	}
+	defer func(file *os.File) {
+		err := file.Close()
+		if err != nil {
+			log.Println("Error closing file:", err)
+		}
+	}(file)
+
+	// 使用Scanner按行读取
+	scanner := bufio.NewScanner(file)
+	var allLines []string
+
+	for scanner.Scan() {
+		allLines = append(allLines, scanner.Text())
+	}
+
+	if err := scanner.Err(); err != nil {
+		return "", err
+	}
+
+	// 获取最后几行
+	totalLines := len(allLines)
+	start := totalLines - lines
+	if start < 0 {
+		start = 0
+	}
+
+	result := allLines[start:]
+	return strings.Join(result, "\n"), nil
+}