61 lines
1.6 KiB
Go
61 lines
1.6 KiB
Go
package controllers
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import (
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"context"
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"crypto/rand"
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"io"
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"time"
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"github.com/SowinskiBraeden/school-management-api/database"
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"github.com/SowinskiBraeden/school-management-api/models"
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"go.mongodb.org/mongo-driver/bson"
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"go.mongodb.org/mongo-driver/bson/primitive"
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"go.mongodb.org/mongo-driver/mongo"
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)
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var idCollection *mongo.Collection = database.OpenCollection(database.Client, "cids")
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var table = [...]byte{'1', '2', '3', '4', '5', '6', '7', '8', '9', '0'}
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func ValidateID(id string) bool { // true: valid id, false: id already in use
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ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
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var foundID models.Id
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err := idCollection.FindOne(ctx, bson.M{"cid": id}).Decode(&foundID)
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cancel()
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if err != nil { // If there is no id found create new ID object to be stored and return true (unless insert error then try again)
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var newID models.Id
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newID.CID = id
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newID.ID = primitive.NewObjectID()
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_, insertErr := idCollection.InsertOne(context.Background(), newID)
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if insertErr != nil {
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return false
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}
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return true
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}
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return false
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}
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func ValidatePEN(pen string) bool { // true: valid pen, false: pen already in use
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ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
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var foundID models.Id
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err := studentCollection.FindOne(ctx, bson.M{"schooldata.pen": pen}).Decode(&foundID)
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cancel()
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if err != nil {
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return true
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}
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return false
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}
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func GenerateID(length int) string {
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b := make([]byte, length)
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n, err := io.ReadAtLeast(rand.Reader, b, length)
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if n != length {
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panic(err)
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}
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for i := 0; i < len(b); i++ {
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b[i] = table[int(b[i])%len(table)]
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}
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return string(b)
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}
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