101 lines
2.4 KiB
Go
101 lines
2.4 KiB
Go
package adapter
|
|
|
|
import (
|
|
"context"
|
|
"database/sql"
|
|
"errors"
|
|
"fmt"
|
|
|
|
"gitea.dwysokinski.me/twhelp/corev3/internal/bun/bunmodel"
|
|
"gitea.dwysokinski.me/twhelp/corev3/internal/domain"
|
|
"github.com/uptrace/bun"
|
|
)
|
|
|
|
type VersionBunRepository struct {
|
|
db bun.IDB
|
|
}
|
|
|
|
func NewVersionBunRepository(db bun.IDB) *VersionBunRepository {
|
|
return &VersionBunRepository{db: db}
|
|
}
|
|
|
|
func (repo *VersionBunRepository) List(
|
|
ctx context.Context,
|
|
params domain.ListVersionsParams,
|
|
) (domain.ListVersionsResult, error) {
|
|
var versions bunmodel.Versions
|
|
|
|
if err := repo.db.NewSelect().
|
|
Model(&versions).
|
|
Apply(listVersionsParamsApplier{params: params}.apply).
|
|
Scan(ctx); err != nil && !errors.Is(err, sql.ErrNoRows) {
|
|
return domain.ListVersionsResult{}, fmt.Errorf("couldn't select versions from the database: %w", err)
|
|
}
|
|
|
|
converted, err := versions.ToDomain()
|
|
if err != nil {
|
|
return domain.ListVersionsResult{}, err
|
|
}
|
|
|
|
return domain.NewListVersionsResult(separateListResultAndNext(converted, params.Limit()))
|
|
}
|
|
|
|
type listVersionsParamsApplier struct {
|
|
params domain.ListVersionsParams
|
|
}
|
|
|
|
func (a listVersionsParamsApplier) apply(q *bun.SelectQuery) *bun.SelectQuery {
|
|
if codes := a.params.Codes(); len(codes) > 0 {
|
|
q = q.Where("version.code IN (?)", bun.In(codes))
|
|
}
|
|
|
|
for _, s := range a.params.Sort() {
|
|
switch s {
|
|
case domain.VersionSortCodeASC:
|
|
q = q.Order("version.code ASC")
|
|
case domain.VersionSortCodeDESC:
|
|
q = q.Order("version.code DESC")
|
|
default:
|
|
return q.Err(fmt.Errorf("%s: %w", s.String(), errInvalidSortValue))
|
|
}
|
|
}
|
|
|
|
return q.Limit(a.params.Limit() + 1).Apply(a.applyCursor)
|
|
}
|
|
|
|
func (a listVersionsParamsApplier) applyCursor(q *bun.SelectQuery) *bun.SelectQuery {
|
|
cursor := a.params.Cursor()
|
|
|
|
if cursor.IsZero() {
|
|
return q
|
|
}
|
|
|
|
sort := a.params.Sort()
|
|
cursorApplier := cursorPaginationApplier{
|
|
data: make([]cursorPaginationApplierDataElement, 0, len(sort)),
|
|
}
|
|
|
|
for _, s := range sort {
|
|
var el cursorPaginationApplierDataElement
|
|
|
|
switch s {
|
|
case domain.VersionSortCodeASC:
|
|
el.value = cursor.Code()
|
|
el.unique = true
|
|
el.column = "version.code"
|
|
el.direction = sortDirectionASC
|
|
case domain.VersionSortCodeDESC:
|
|
el.value = cursor.Code()
|
|
el.unique = true
|
|
el.column = "version.code"
|
|
el.direction = sortDirectionDESC
|
|
default:
|
|
return q.Err(fmt.Errorf("%s: %w", s.String(), errInvalidSortValue))
|
|
}
|
|
|
|
cursorApplier.data = append(cursorApplier.data, el)
|
|
}
|
|
|
|
return q.Apply(cursorApplier.apply)
|
|
}
|