feat: items-editor (#5)

* format readme

* update logo

* format html

* add logo to docs

* repository for document and document tokens

* add attachments type and repository

* autogenerate types via scripts

* use autogenerated types

* attachment type updates

* add insured and quantity fields for items

* implement HasID interface for entities

* implement label updates for items

* implement service update method

* WIP item update client side actions

* check err on attachment

* finish types for basic items editor

* remove unused var

* house keeping

backend/internal/services/service_items.go

@@ -3,8 +3,12 @@ package services
 import (
 	"context"
 	"fmt"
+	"io"
+	"os"
+	"path/filepath"
 
 	"github.com/google/uuid"
+	"github.com/hay-kot/content/backend/ent/attachment"
 	"github.com/hay-kot/content/backend/internal/repo"
 	"github.com/hay-kot/content/backend/internal/services/mappers"
 	"github.com/hay-kot/content/backend/internal/types"
@@ -13,6 +17,9 @@ import (
 
 type ItemService struct {
 	repo *repo.AllRepos
+
+	// filepath is the root of the storage location that will be used to store all files from.
+	filepath string
 }
 
 func (svc *ItemService) GetOne(ctx context.Context, gid uuid.UUID, id uuid.UUID) (*types.ItemOut, error) {
@@ -41,6 +48,7 @@ func (svc *ItemService) GetAll(ctx context.Context, gid uuid.UUID) ([]*types.Ite
 
 	return itemsOut, nil
 }
+
 func (svc *ItemService) Create(ctx context.Context, gid uuid.UUID, data types.ItemCreate) (*types.ItemOut, error) {
 	item, err := svc.repo.Items.Create(ctx, gid, data)
 	if err != nil {
@@ -49,6 +57,7 @@ func (svc *ItemService) Create(ctx context.Context, gid uuid.UUID, data types.It
 
 	return mappers.ToItemOut(item), nil
 }
+
 func (svc *ItemService) Delete(ctx context.Context, gid uuid.UUID, id uuid.UUID) error {
 	item, err := svc.repo.Items.GetOne(ctx, id)
 	if err != nil {
@@ -66,8 +75,76 @@ func (svc *ItemService) Delete(ctx context.Context, gid uuid.UUID, id uuid.UUID)
 
 	return nil
 }
+
 func (svc *ItemService) Update(ctx context.Context, gid uuid.UUID, data types.ItemUpdate) (*types.ItemOut, error) {
-	panic("implement me")
+	item, err := svc.repo.Items.GetOne(ctx, data.ID)
+	if err != nil {
+		return nil, err
+	}
+
+	if item.Edges.Group.ID != gid {
+		return nil, ErrNotOwner
+	}
+
+	item, err = svc.repo.Items.Update(ctx, data)
+	if err != nil {
+		return nil, err
+	}
+
+	return mappers.ToItemOut(item), nil
+}
+
+func (svc *ItemService) attachmentPath(gid, itemId uuid.UUID, filename string) string {
+	return filepath.Join(svc.filepath, gid.String(), itemId.String(), filename)
+}
+
+// AddAttachment adds an attachment to an item by creating an entry in the Documents table and linking it to the Attachment
+// Table and Items table. The file provided via the reader is stored on the file system based on the provided
+// relative path during construction of the service.
+func (svc *ItemService) AddAttachment(ctx context.Context, gid, itemId uuid.UUID, filename string, file io.Reader) (*types.ItemOut, error) {
+	// Get the Item
+	item, err := svc.repo.Items.GetOne(ctx, itemId)
+	if err != nil {
+		return nil, err
+	}
+
+	if item.Edges.Group.ID != gid {
+		return nil, ErrNotOwner
+	}
+
+	// Create the document
+	doc, err := svc.repo.Docs.Create(ctx, gid, types.DocumentCreate{
+		Title: filename,
+		Path:  svc.attachmentPath(gid, itemId, filename),
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	// Create the attachment
+	_, err = svc.repo.Attachments.Create(ctx, itemId, doc.ID, attachment.TypeAttachment)
+	if err != nil {
+		return nil, err
+	}
+
+	// Read the contents and write them to a file on the file system
+	err = os.MkdirAll(filepath.Dir(doc.Path), os.ModePerm)
+	if err != nil {
+		return nil, err
+	}
+
+	f, err := os.Create(doc.Path)
+	if err != nil {
+		log.Err(err).Msg("failed to create file")
+		return nil, err
+	}
+
+	_, err = io.Copy(f, file)
+	if err != nil {
+		return nil, err
+	}
+
+	return svc.GetOne(ctx, gid, itemId)
 }
 
 func (svc *ItemService) CsvImport(ctx context.Context, gid uuid.UUID, data [][]string) error {