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family.go
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family.go
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package main
import (
"errors"
"fmt"
"math/rand"
"strings"
"time"
"gopkg.in/mgo.v2"
"gopkg.in/mgo.v2/bson"
)
type Family struct {
ID bson.ObjectId `bson:"_id"`
Code string `bson:"code"`
}
func FamilyExists(db *mgo.Database, code string) bool {
c := db.C("families")
count, _ := c.Find(bson.M{"code": code}).Limit(1).Count()
if count > 0 {
return true
} else {
return false
}
}
func GenerateFamilyCode(db *mgo.Database, user *User) (code string, errM *Error) {
// Family code is last name (uppercase) plus 4 digit random number.
code = CreateCode(user.LastName)
for FamilyExists(db, code) {
code = CreateCode(user.Family)
}
family := &Family{ID: bson.NewObjectId(), Code: code}
c := db.C("families")
err := c.Insert(family)
if err != nil {
errM = &Error{Internal: true, Reason: errors.New(fmt.Sprintf("Error creating family code: %s\n", err))}
return
}
return
}
func CreateCode(name string) (code string) {
rand.Seed(time.Now().Unix())
return fmt.Sprintf("%s%4d", strings.ToUpper(name), rand.Intn(9999))
}