daddy/internal/model/dsf_repository.go

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package model
import (
"context"
"encoding/json"
"errors"
"github.com/jinzhu/gorm"
"github.com/jinzhu/gorm/dialects/postgres"
errs "github.com/pkg/errors"
)
var (
ErrMissingWorkgroup = errs.New("missing workgroup")
ErrInvalidWorkgroup = errs.New("invalid workgroup")
ErrDecisionSupportFileDoesNotExist = errs.New("decision support file does not exist")
)
type DSFRepository struct {
db *gorm.DB
}
func (r *DSFRepository) Create(ctx context.Context, changes *DecisionSupportFileChanges) (*DecisionSupportFile, error) {
dsf := &DecisionSupportFile{}
if err := r.updateFromChanges(dsf, changes); err != nil {
return nil, errs.WithStack(err)
}
if err := r.db.Save(&dsf).Error; err != nil {
return nil, errs.WithStack(err)
}
return dsf, nil
}
func (r *DSFRepository) Update(ctx context.Context, id string, changes *DecisionSupportFileChanges) (*DecisionSupportFile, error) {
dsf := &DecisionSupportFile{}
if err := r.db.Find(dsf, "id = ?", id).Error; err != nil {
return nil, errs.WithStack(err)
}
if err := r.updateFromChanges(dsf, changes); err != nil {
return nil, errs.WithStack(err)
}
if err := r.db.Save(dsf).Error; err != nil {
return nil, errs.WithStack(err)
}
return dsf, nil
}
func (r *DSFRepository) updateFromChanges(dsf *DecisionSupportFile, changes *DecisionSupportFileChanges) error {
if changes.WorkgroupID == nil {
return errs.WithStack(ErrMissingWorkgroup)
}
wg := &Workgroup{}
if err := r.db.Model(wg).First(wg, "id = ?", changes.WorkgroupID).Error; err != nil {
if errors.Is(err, gorm.ErrRecordNotFound) {
return errs.WithStack(ErrInvalidWorkgroup)
}
return errs.WithStack(err)
}
dsf.Workgroup = wg
if changes.Sections != nil {
rawSections, err := json.Marshal(changes.Sections)
if err != nil {
return errs.WithStack(err)
}
dsf.Sections = postgres.Jsonb{RawMessage: rawSections}
}
if changes.Title != nil {
dsf.Title = *changes.Title
}
if changes.Status != nil {
dsf.Status = *changes.Status
}
return nil
}
func (r *DSFRepository) Find(ctx context.Context, id string) (*DecisionSupportFile, error) {
dsf := &DecisionSupportFile{}
query := r.db.Model(dsf).Preload("Workgroup").Where("id = ?", id)
if err := query.First(&dsf).Error; err != nil {
return nil, errs.WithStack(err)
}
return dsf, nil
}
func (r *DSFRepository) Search(ctx context.Context, filter *DecisionSupportFileFilter) ([]*DecisionSupportFile, error) {
query := r.db.Model(&DecisionSupportFile{}).Preload("Workgroup")
if filter != nil {
if filter.Ids != nil {
query = query.Where("id in (?)", filter.Ids)
}
}
dsfs := make([]*DecisionSupportFile, 0)
if err := query.Find(&dsfs).Error; err != nil {
return nil, errs.WithStack(err)
}
return dsfs, nil
}
func NewDSFRepository(db *gorm.DB) *DSFRepository {
return &DSFRepository{db}
}