package pkg
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import (
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"fmt"
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"strconv"
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"strings"
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)
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// 已弃用
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// 生成一个包含楼层的人脸id,解析楼层
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// 使用48位源id, 其中前41位是imageid, 不可以修改 41-43位填 06 代表图像, +99 + 3位楼层(第一位0表示正,1表示负)
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func GenerateFaceIdContainFloor(srcId, floorStr string) string {
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floorNum, _ := BuildFloorString("0", floorStr)
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newId := srcId[0:43] + "99" + floorNum
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//newId := srcId[0:43] + "99" + floorNum + snowflake.CreateRandomNumber(1)
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return newId
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}
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func ParseFloorFromId(srcId string) (string, string, error) {
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if len(srcId) != 48 {
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return "", "", fmt.Errorf("invalid id %s", srcId)
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}
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if srcId[43:45] != "99" {
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return "", "", fmt.Errorf("invalid flag %s", srcId[43:45])
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}
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return RestoreFloor(srcId[45:48])
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}
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// BuildFloorString parses the floor string and returns a string
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func BuildFloorString(direction, floor string) (string, error) {
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var dire string
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var sign string
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var number string
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switch direction {
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case "in":
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dire = "1"
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case "out":
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dire = "2"
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default:
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dire = "0"
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}
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// Check if the floor is negative
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if strings.HasPrefix(floor, "-") {
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sign = "1"
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number = floor[1 : len(floor)-1]
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} else {
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sign = "0"
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number = floor[:len(floor)-1]
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}
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// Convert the number to an integer to validate and ensure it is a valid number
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if _, err := strconv.Atoi(number); err != nil {
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return "", err
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}
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// Format the number to be two digits
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formattedNumber := fmt.Sprintf("%02s", number)
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return dire + sign + formattedNumber, nil
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}
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// RestoreFloor restores the three-character string back to the original floor string
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func RestoreFloor(encoded string) (string, string, error) {
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var direction, sign uint8
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var floorNumber, floorStr, directionStr string
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// 3位是旧的格式, 为了兼容, 暂时保留
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if len(encoded) == 3 {
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sign = encoded[0]
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floorNumber = encoded[1:]
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} else if len(encoded) == 4 {
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direction = encoded[0]
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sign = encoded[1]
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floorNumber = encoded[2:]
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} else {
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return "", "", fmt.Errorf("encoded string must be 3 characters long")
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}
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// Convert the number back to integer to remove any leading zeros
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parsedNumber, err := strconv.Atoi(floorNumber)
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if err != nil {
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return "", "", err
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}
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if sign == '1' {
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floorStr = fmt.Sprintf("-%dF", parsedNumber)
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} else if sign == '0' {
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floorStr = fmt.Sprintf("%dF", parsedNumber)
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} else {
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return "", "", fmt.Errorf("invalid sign character in encoded string")
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}
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if direction == '1' {
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directionStr = "in"
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} else if direction == '2' {
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directionStr = "out"
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}
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return directionStr, floorStr, nil
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}
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func CheckDirection(str1, str2 string) string {
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// 去掉字符串最后一个字符 'F'
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numStr1 := strings.TrimSuffix(str1, "F")
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numStr2 := strings.TrimSuffix(str2, "F")
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// 转换为 int 类型
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num1, err1 := strconv.Atoi(numStr1)
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num2, err2 := strconv.Atoi(numStr2)
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// 检查转换是否成功
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if err1 != nil || err2 != nil {
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return ""
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}
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// 比较两个整数的大小
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if num1 > num2 {
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return "out"
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} else {
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return "in"
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}
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}
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