/
cafe.go
122 lines (100 loc) · 2.79 KB
/
cafe.go
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package pg
import (
"database/sql"
"fmt"
"github.com/Digital-Voting-Team/cafe-service/internal/data"
sq "github.com/Masterminds/squirrel"
"github.com/fatih/structs"
"gitlab.com/distributed_lab/kit/pgdb"
)
const cafesTableName = "public.cafes"
func NewCafesQ(db *pgdb.DB) data.CafesQ {
return &cafesQ{
db: db.Clone(),
sql: sq.Select("cafes.*").From(cafesTableName),
sqlUpdate: sq.Update(cafesTableName).Suffix("returning *"),
}
}
type cafesQ struct {
db *pgdb.DB
sql sq.SelectBuilder
sqlUpdate sq.UpdateBuilder
}
func (q *cafesQ) New() data.CafesQ {
return NewCafesQ(q.db)
}
func (q *cafesQ) Get() (*data.Cafe, error) {
var result data.Cafe
err := q.db.Get(&result, q.sql)
if err == sql.ErrNoRows {
return nil, nil
}
return &result, err
}
func (q *cafesQ) Select() ([]data.Cafe, error) {
var result []data.Cafe
err := q.db.Select(&result, q.sql)
return result, err
}
func (q *cafesQ) Update(cafe data.Cafe) (data.Cafe, error) {
var result data.Cafe
clauses := structs.Map(cafe)
clauses["cafe_name"] = cafe.CafeName
clauses["rating"] = cafe.Rating
clauses["address_id"] = cafe.AddressId
err := q.db.Get(&result, q.sqlUpdate.SetMap(clauses))
return result, err
}
func (q *cafesQ) Transaction(fn func(q data.CafesQ) error) error {
return q.db.Transaction(func() error {
return fn(q)
})
}
func (q *cafesQ) Insert(cafe data.Cafe) (data.Cafe, error) {
clauses := structs.Map(cafe)
clauses["cafe_name"] = cafe.CafeName
clauses["rating"] = cafe.Rating
clauses["address_id"] = cafe.AddressId
var result data.Cafe
stmt := sq.Insert(cafesTableName).SetMap(clauses).Suffix("returning *")
err := q.db.Get(&result, stmt)
return result, err
}
func (q *cafesQ) Delete(id int64) error {
stmt := sq.Delete(cafesTableName).Where(sq.Eq{"id": id})
err := q.db.Exec(stmt)
return err
}
func (q *cafesQ) Page(pageParams pgdb.OffsetPageParams) data.CafesQ {
q.sql = pageParams.ApplyTo(q.sql, "id")
return q
}
func (q *cafesQ) FilterById(ids ...int64) data.CafesQ {
q.sql = q.sql.Where(sq.Eq{"id": ids})
q.sqlUpdate = q.sqlUpdate.Where(sq.Eq{"id": ids})
return q
}
func (q *cafesQ) FilterByNames(names ...string) data.CafesQ {
q.sql = q.sql.Where(sq.Eq{"cafe_name": names})
return q
}
func (q *cafesQ) FilterByRatingFrom(ratings ...float64) data.CafesQ {
stmt := sq.GtOrEq{"rating": ratings}
q.sql = q.sql.Where(stmt)
return q
}
func (q *cafesQ) FilterByRatingTo(ratings ...float64) data.CafesQ {
stmt := sq.LtOrEq{"rating": ratings}
q.sql = q.sql.Where(stmt)
return q
}
func (q *cafesQ) FilterByAddressId(ids ...int64) data.CafesQ {
q.sql = q.sql.Where(sq.Eq{"address_id": ids})
return q
}
func (q *cafesQ) JoinAddress() data.CafesQ {
stmt := fmt.Sprintf("%s as cafes on public.addresses.id = cafes.address_id",
cafesTableName)
q.sql = q.sql.Join(stmt)
return q
}