144 lines
3.7 KiB
Go
144 lines
3.7 KiB
Go
package repository
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"git.sch9.ru/new_gate/ms-tester/internal/models"
|
|
"git.sch9.ru/new_gate/ms-tester/pkg/utils"
|
|
"github.com/jackc/pgerrcode"
|
|
"github.com/jackc/pgx/v5/pgconn"
|
|
"github.com/jmoiron/sqlx"
|
|
"go.uber.org/zap"
|
|
)
|
|
|
|
type ContestRepository struct {
|
|
db *sqlx.DB
|
|
logger *zap.Logger
|
|
}
|
|
|
|
func NewContestRepository(db *sqlx.DB, logger *zap.Logger) *ContestRepository {
|
|
return &ContestRepository{
|
|
db: db,
|
|
logger: logger,
|
|
}
|
|
}
|
|
|
|
const createContestQuery = "INSERT INTO contest (title) VALUES (?) RETURNING id"
|
|
|
|
func (r *ContestRepository) CreateContest(ctx context.Context, title string) (int32, error) {
|
|
query := r.db.Rebind(createContestQuery)
|
|
|
|
rows, err := r.db.QueryxContext(ctx, query, title)
|
|
if err != nil {
|
|
return 0, handlePgErr(err)
|
|
}
|
|
|
|
defer rows.Close()
|
|
var id int32
|
|
rows.Next()
|
|
err = rows.Scan(&id)
|
|
if err != nil {
|
|
return 0, handlePgErr(err)
|
|
}
|
|
|
|
return id, nil
|
|
}
|
|
|
|
const readContestByIdQuery = "SELECT * from contest WHERE id=? LIMIT 1"
|
|
|
|
func (r *ContestRepository) ReadContestById(ctx context.Context, id int32) (*models.Contest, error) {
|
|
var contest models.Contest
|
|
query := r.db.Rebind(readContestByIdQuery)
|
|
err := r.db.GetContext(ctx, &contest, query, id)
|
|
if err != nil {
|
|
return nil, handlePgErr(err)
|
|
}
|
|
return &contest, nil
|
|
}
|
|
|
|
const deleteContestQuery = "DELETE FROM contest WHERE id=?"
|
|
|
|
func (r *ContestRepository) DeleteContest(ctx context.Context, id int32) error {
|
|
query := r.db.Rebind(deleteContestQuery)
|
|
_, err := r.db.ExecContext(ctx, query, id)
|
|
if err != nil {
|
|
return handlePgErr(err)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
const addTaskQuery = "INSERT INTO task (problem_id, contest_id, position) VALUES (?, ?,(SELECT COALESCE(MAX(position),0) + 1 FROM task)) RETURNING id"
|
|
|
|
func (r *ContestRepository) AddTask(ctx context.Context, contestId int32, problem_id int32) (int32, error) {
|
|
query := r.db.Rebind(addTaskQuery)
|
|
rows, err := r.db.QueryxContext(ctx, query, problem_id, contestId)
|
|
if err != nil {
|
|
return 0, handlePgErr(err)
|
|
}
|
|
defer rows.Close()
|
|
var id int32
|
|
rows.Next()
|
|
err = rows.Scan(&id)
|
|
if err != nil {
|
|
return 0, handlePgErr(err)
|
|
}
|
|
return id, nil
|
|
}
|
|
|
|
const deleteTaskQuery = "DELETE FROM task WHERE id=?"
|
|
|
|
func (r *ContestRepository) DeleteTask(ctx context.Context, taskId int32) error {
|
|
query := r.db.Rebind(deleteTaskQuery)
|
|
_, err := r.db.ExecContext(ctx, query, taskId)
|
|
if err != nil {
|
|
return handlePgErr(err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
const addParticipantQuery = "INSERT INTO participant (user_id ,contest_id, name) VALUES (?, ?, ?) RETURNING id"
|
|
|
|
func (r *ContestRepository) AddParticipant(ctx context.Context, contestId int32, userId int32) (int32, error) {
|
|
query := r.db.Rebind(addParticipantQuery)
|
|
name := ""
|
|
rows, err := r.db.QueryxContext(ctx, query, contestId, userId, name)
|
|
if err != nil {
|
|
return 0, handlePgErr(err)
|
|
}
|
|
defer rows.Close()
|
|
var id int32
|
|
rows.Next()
|
|
err = rows.Scan(&id)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
return id, nil
|
|
}
|
|
|
|
const deleteParticipantQuery = "DELETE FROM participant WHERE id=?"
|
|
|
|
func (r *ContestRepository) DeleteParticipant(ctx context.Context, participantId int32) error {
|
|
query := r.db.Rebind(deleteParticipantQuery)
|
|
_, err := r.db.ExecContext(ctx, query, participantId)
|
|
if err != nil {
|
|
return handlePgErr(err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func handlePgErr(err error) error {
|
|
var pgErr *pgconn.PgError
|
|
if !errors.As(err, &pgErr) {
|
|
return utils.StorageError(err, utils.ErrUnknown, "unexpected error from postgres")
|
|
}
|
|
if pgerrcode.IsIntegrityConstraintViolation(pgErr.Code) {
|
|
// TODO: probably should specify which constraint
|
|
return utils.StorageError(err, utils.ErrConflict, pgErr.Message)
|
|
}
|
|
if pgerrcode.IsNoData(pgErr.Code) {
|
|
return utils.StorageError(err, utils.ErrNotFound, pgErr.Message)
|
|
}
|
|
return utils.StorageError(err, utils.ErrUnimplemented, "unimplemented error")
|
|
}
|