timoth-y/kicksware-api

package postgres

import (
    "context"

    sqb "github.com/Masterminds/squirrel"
    _ "github.com/jackc/pgx/v4/stdlib"
    "github.com/jmoiron/sqlx"
    "github.com/pkg/errors"
    "go.kicksware.com/api/shared/config"
    "go.kicksware.com/api/shared/util"

    "go.kicksware.com/api/shared/core/meta"

    "go.kicksware.com/api/services/users/core/model"
    "go.kicksware.com/api/services/users/core/repo"
    "go.kicksware.com/api/services/users/usecase/business"
)

type repository struct {
    db *sqlx.DB
    table string
}

func NewRepository(config config.DataStoreConfig) (repo.UserRepository, error) {
    db, err := newPostgresClient(config.URL)
    if err != nil {
        return nil, errors.Wrap(err, "repository.NewRepository")
    }
    repo := &repository{
        db: db,
        table:  config.Collection,
    }
    return repo, nil
}

func newPostgresClient(url string) (*sqlx.DB, error) {
    ctx, cancel := context.WithCancel(context.Background())
    defer cancel()
    db, err := sqlx.ConnectContext(ctx,"pgx", url)
    if err != nil {
        return nil, errors.Wrap(err, "repository.newPostgresClient")
    }
    if err = db.PingContext(ctx); err != nil {
        return nil, errors.Wrap(err, "repository.newPostgresClient")
    }
    return db, nil
}

func (r *repository) FetchOne(code string) (*model.User, error) {
    ctx, cancel := context.WithCancel(context.Background())
    defer cancel()
    user := &model.User{}
    cmd, args, err := sqb.Select("*").From(r.table).
        Where(sqb.Eq{"uniqueID":code}).PlaceholderFormat(sqb.Dollar).ToSql()
    if err != nil {
        return nil, errors.Wrap(err, "repository.User.FetchOne")
    }
    if err = r.db.GetContext(ctx, user, cmd, args); err != nil {
        return nil, errors.Wrap(err, "repository.User.FetchOne")
    }
    return user, nil
}

func (r *repository) Fetch(codes []string, params *meta.RequestParams) ([]*model.User, error) {
    ctx, cancel := context.WithCancel(context.Background())
    defer cancel()
    users := make([]*model.User, 0)
    cmd, args, err := sqb.Select("*").From(r.table).
        Where(sqb.Eq{"uniqueID":codes}).PlaceholderFormat(sqb.Dollar).ToSql()
    if err != nil {
        return nil, errors.Wrap(err, "repository.User.Fetch")
    }
    if err = r.db.SelectContext(ctx, &users, cmd, args); err != nil {
        return nil, errors.Wrap(err, "repository.User.Fetch")
    }
    if users == nil || len(users) == 0 {
        return nil, errors.Wrap(business.ErrUserNotFound, "repository.User.Fetch")
    }
    return users, nil
}

func (r *repository) FetchAll(params *meta.RequestParams) ([]*model.User, error) {
    ctx, cancel := context.WithCancel(context.Background())
    defer cancel()
    users := make([]*model.User, 0)
    cmd, args, err := sqb.Select("*").From(r.table).PlaceholderFormat(sqb.Dollar).ToSql()
    if err != nil {
        return nil, errors.Wrap(err, "repository.User.FetchAll")
    }
    if err = r.db.SelectContext(ctx, &users, cmd, args); err != nil {
        return nil, errors.Wrap(err, "repository.User.FetchAll")
    }
    if users == nil || len(users) == 0 {
        return nil, errors.Wrap(business.ErrUserNotFound, "repository.User.FetchAll")
    }
    return users, nil
}

func (r *repository) FetchQuery(query meta.RequestQuery, params *meta.RequestParams) ([]*model.User, error) {
    ctx, cancel := context.WithCancel(context.Background())
    defer cancel()
    users := make([]*model.User, 0)
    where, err := query.ToSql(); if err != nil {
        return nil, errors.Wrap(err, "repository.User.FetchQuery")
    }
    cmd, args, err := sqb.Select("*").From(r.table).
        Where(where).PlaceholderFormat(sqb.Dollar).ToSql()
    if err != nil {
        return nil, errors.Wrap(err, "repository.User.FetchQuery")
    }
    if err = r.db.SelectContext(ctx, &users, cmd, args); err != nil {
        return nil, errors.Wrap(err, "repository.User.FetchQuery")
    }
    if users == nil || len(users) == 0 {
        return nil, errors.Wrap(business.ErrUserNotFound, "repository.User.FetchQuery")
    }
    return users, nil
}

func (r *repository) Store(user *model.User) error {
    ctx, cancel := context.WithCancel(context.Background())
    defer cancel()
    cmd, args, err := sqb.Insert(r.table).SetMap(util.ToMap(user)).PlaceholderFormat(sqb.Dollar).ToSql()
    if err != nil {
        return errors.Wrap(err, "repository.User.Store")
    }
    if _, err := r.db.ExecContext(ctx, cmd, args); err != nil {
        return errors.Wrap(err, "repository.User.Store")
    }
    return nil
}

func (r *repository) Modify(user *model.User) error {
    ctx, cancel := context.WithCancel(context.Background())
    defer cancel()
    cmd, args, err := sqb.Update(r.table).SetMap(util.ToMap(user)).
        Where(sqb.Eq{"uniqueID":user.UniqueID}).PlaceholderFormat(sqb.Dollar).ToSql()
    if err != nil {
        return errors.Wrap(err, "repository.User.Store")
    }
    if _, err := r.db.ExecContext(ctx, cmd, args); err != nil {
        return errors.Wrap(err, "repository.User.Store")
    }
    return nil
}

func (r *repository) Replace(user *model.User) error {
    if err := r.Modify(user); err != nil {
        return errors.Wrap(err, "repository.User.Replace")
    }
    return nil
}

func (r *repository) Remove(code string) error {
    ctx, cancel := context.WithCancel(context.Background())
    defer cancel()
    cmd, args, err := sqb.Delete(r.table).Where(sqb.Eq{"UniqueID":code}).PlaceholderFormat(sqb.Dollar).ToSql()
    if err != nil {
        return errors.Wrap(err, "repository.User.Remove")
    }
    if _, err := r.db.ExecContext(ctx, cmd, args); err != nil {
        return errors.Wrap(err, "repository.User.Remove")
    }
    return nil
}

func (r *repository) Count(query meta.RequestQuery, params *meta.RequestParams) (count int, err error) {
    ctx, cancel := context.WithCancel(context.Background())
    defer cancel()

    where, err := query.ToSql(); if err != nil {
        return 0, errors.Wrap(err, "repository.User.Count")
    }

    cmd, args, err := sqb.Select("COUNT(*)").From(r.table).
        Where(where).PlaceholderFormat(sqb.Dollar).ToSql()
    if err != nil {
        return 0, errors.Wrap(err, "repository.User.Count")
    }
    if err = r.db.SelectContext(ctx, &count, cmd, args); err != nil {
        return 0, errors.Wrap(err, "repository.User.Count")
    }
    return
}

func (r *repository) CountAll() (count int, err error) {
    ctx, cancel := context.WithCancel(context.Background())
    defer cancel()

    cmd, args, err := sqb.Select("COUNT(*)").From(r.table).
        PlaceholderFormat(sqb.Dollar).ToSql()
    if err != nil {
        return 0, errors.Wrap(err, "repository.User.CountAll")
    }
    if err = r.db.SelectContext(ctx, &count, cmd, args); err != nil {
        return 0, errors.Wrap(err, "repository.User.CountAll")
    }
    return
}