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package service
import (
"context"
"math/rand"
pb "verifyCode/api/verifyCode"
)
type VerifyCodeService struct {
pb . UnimplementedVerifyCodeServer
}
func NewVerifyCodeService ( ) * VerifyCodeService {
return & VerifyCodeService { }
}
func ( s * VerifyCodeService ) GetVerifyCode ( ctx context . Context , req * pb . GetVerifyCodeRequest ) ( * pb . GetVerifyCodeReply , error ) {
return & pb . GetVerifyCodeReply {
Code : RandCode ( int ( req . Length ) , req . Type ) ,
} , nil
}
// 开放被调用，用于区分类型
func RandCode ( l int , t pb . TYPE ) string {
switch t {
case pb . TYPE_DEFAULT :
fallthrough
case pb . TYPE_DIGIT :
return randCode ( "0123456789" , l )
case pb . TYPE_LETTER :
return randCode ( "abcdefghijklnmopqrstuvwxyz" , l )
case pb . TYPE_MIXED :
return randCode ( "0123456789abcdefghijklnmopqrstuvwxyz" , l )
default :
}
return ""
}
// 核心
func randCode ( chars string , l int ) string {
charsLen := len ( chars )
result := make ( [ ] byte , l )
for i := 0 ; i < l ; i ++ {
//随机生成【0， ）
randIndex := rand . Intn ( charsLen )
result [ i ] = chars [ randIndex ]
}
rand . Intn ( len ( chars ) )
return string ( result )
}
