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db.go
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db.go
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package db
import (
"context"
"github.com/shpota/skmz/model"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/mongo"
"log"
)
type DB interface {
GetProgrammers(skill string) ([]*model.Programmer, error)
}
type MongoDB struct {
collection *mongo.Collection
}
func New(client *mongo.Client) *MongoDB {
programmers := client.Database("programmers").Collection("programmers")
return &MongoDB{
collection: programmers,
}
}
func (db MongoDB) GetProgrammers(skill string) ([]*model.Programmer, error) {
res, err := db.collection.Find(context.TODO(), db.filter(skill))
if err != nil {
log.Printf("Error while fetching programmers: %s", err.Error())
return nil, err
}
var p []*model.Programmer
err = res.All(context.TODO(), &p)
if err != nil {
log.Printf("Error while decoding programmers: %s", err.Error())
return nil, err
}
return p, nil
}
func (db MongoDB) filter(skill string) bson.D {
return bson.D{{
"skills.name",
bson.D{{
"$regex",
"^" + skill + ".*$",
}, {
"$options",
"i",
}},
}}
}