/
user-repository-neo4j.go
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/
user-repository-neo4j.go
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package repositories
import (
"context"
"time"
"github.com/fapiko/john-hancock-platform/app/contracts"
"github.com/fapiko/john-hancock-platform/app/repositories/daos"
"github.com/google/uuid"
"github.com/neo4j/neo4j-go-driver/v4/neo4j"
"golang.org/x/crypto/bcrypt"
)
var _ UserRepository = (*UserRepositoryNeo4j)(nil)
type UserRepositoryNeo4j struct {
driver neo4j.Driver
}
func NewUserRepositoryNeo4j(driver neo4j.Driver) *UserRepositoryNeo4j {
return &UserRepositoryNeo4j{
driver: driver,
}
}
func (r *UserRepositoryNeo4j) CleanupSessions(ctx context.Context) (int, error) {
query := `MATCH (s:Session)
WHERE s.expires <= datetime({timezone: 'UTC'})
DETACH DELETE s RETURN count(s) AS deleted`
record, err := neo4jWriteTxSingle(ctx, r.driver, query)
return int(record.Values[0].(int64)), err
}
func (r *UserRepositoryNeo4j) CreateSession(
ctx context.Context,
userID string,
) (*contracts.SessionResponse, error) {
sessionResp := &contracts.SessionResponse{
ID: uuid.New().String(),
CreatedAt: time.Now(),
Expires: time.Now().Add(sessionExpiration),
}
session := r.driver.NewSession(neo4j.SessionConfig{AccessMode: neo4j.AccessModeWrite})
cypher := `MATCH (u:User {uuid: $userID})
CREATE (u)-[:HAS_SESSION]->(s:Session {
uuid: $uuid,
createdAt: $createdAt,
expires: $expires
})`
_, err := session.Run(
cypher, map[string]interface{}{
"userID": userID,
"uuid": sessionResp.ID,
"createdAt": sessionResp.CreatedAt.In(time.UTC),
"expires": sessionResp.Expires.In(time.UTC),
},
)
return sessionResp, err
}
func (r *UserRepositoryNeo4j) CreateUser(
ctx context.Context,
createUser *contracts.CreateUserRequest,
) (*daos.User, error) {
passwordHashData, err := bcrypt.GenerateFromPassword([]byte(createUser.Password), bcryptCost)
if err != nil {
return nil, err
}
passwordHash := string(passwordHashData)
userID := uuid.New().String()
session := r.driver.NewSession(neo4j.SessionConfig{AccessMode: neo4j.AccessModeWrite})
cypher := "CREATE (u:User {uuid: $uuid, firstName: $firstName, lastName: $lastName, email: $email, password: $password})"
_, err = session.Run(
cypher, map[string]interface{}{
"uuid": userID,
"firstName": createUser.FirstName,
"lastName": createUser.LastName,
"email": createUser.Email,
"password": passwordHash,
},
)
if err != nil {
return nil, err
}
user := &daos.User{
ID: userID,
FirstName: createUser.FirstName,
LastName: createUser.LastName,
Email: createUser.Email,
Password: passwordHash,
}
return user, nil
}
func (r *UserRepositoryNeo4j) GetUserByEmail(ctx context.Context, email string) (
*daos.User,
error,
) {
session := r.driver.NewSession(neo4j.SessionConfig{AccessMode: neo4j.AccessModeRead})
cypher := "MATCH (u:User {email: $email}) RETURN u"
result, err := session.Run(
cypher, map[string]interface{}{
"email": email,
},
)
if err != nil {
if err.Error() == NeoErrNoRecordsMsg {
return nil, ErrNoRecord
}
return nil, err
}
record, err := result.Single()
if err != nil {
return nil, err
}
props := record.Values[0].(neo4j.Node).Props
user := daos.NewUserFromProps(props)
return user, nil
}
func (r *UserRepositoryNeo4j) GetUserBySessionID(ctx context.Context, sessionID string) (
*daos.User,
error,
) {
cypher := `MATCH (u:User)-[:HAS_SESSION]->(s:Session {uuid: $sessionID}) RETURN u`
params := map[string]interface{}{
paramSessionID: sessionID,
}
result, err := neo4jReadTxSingle(ctx, r.driver, cypher, params)
if err != nil {
return nil, err
}
return daos.NewUserFromProps(result.Values[0].(neo4j.Node).Props), nil
}