feat: categories endpoints

internal/api/api.go

@@ -57,6 +57,7 @@ func (s *APIServer) registerRoutes(r *chi.Mux) {
 
 	r.Route("/assets", s.setupAssetRoutes())
 	r.Route("/shelves", s.setupShelfRoutes())
+	r.Route("/categories", s.setupCategoryRoutes())
 }
 
 func (s *APIServer) handleIndex(w http.ResponseWriter, r *http.Request) error {

internal/api/categories.go

@@ -0,0 +1,118 @@
+package api
+
+import (
+	"context"
+	"git.brettb.xyz/goinv/server/internal/types"
+	"github.com/go-chi/chi/v5"
+	"github.com/go-chi/render"
+	"net/http"
+	"strconv"
+)
+
+func (s *APIServer) setupCategoryRoutes() func(chi.Router) {
+	return func(r chi.Router) {
+		r.Get("/", makeHandler(s.getCategories))
+		r.Post("/", makeHandler(s.createCategory))
+
+		r.Route("/{categoryID}", func(r chi.Router) {
+			r.Use(s.CategoryCtx)
+			r.Get("/", makeHandler(s.getCategory))
+			r.Delete("/", makeHandler(s.deleteCategory))
+		})
+	}
+}
+
+func (s *APIServer) CategoryCtx(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		categoryIdStr := chi.URLParam(r, "categoryID")
+		categoryId, err := strconv.ParseUint(categoryIdStr, 10, 64)
+		if err != nil {
+			render.Render(w, r, errNotFound)
+			return
+		}
+		shelf, err := s.db.GetCategoryByID(categoryId)
+		if err != nil {
+			render.Render(w, r, errNotFound)
+			return
+		}
+		ctx := context.WithValue(r.Context(), "category", shelf)
+		next.ServeHTTP(w, r.WithContext(ctx))
+	})
+}
+
+func (s *APIServer) getCategories(w http.ResponseWriter, r *http.Request) error {
+	categories, err := s.db.GetCategories(0, 10)
+	if err != nil {
+		return err
+	}
+
+	total, err := s.db.TotalCategories()
+	if err != nil {
+		return err
+	}
+
+	return render.Render(w, r, &types.MultipleCategoryResponse{
+		Response: &types.Response{
+			HTTPStatusCode: http.StatusOK,
+		},
+		Categories: categories,
+		Total:      total,
+	})
+}
+
+func (s *APIServer) getCategory(w http.ResponseWriter, r *http.Request) error {
+	ctx := r.Context()
+	category, ok := ctx.Value("category").(*types.Category)
+	if !ok {
+		return render.Render(w, r, errUnprocessable)
+	}
+
+	return render.Render(w, r, &types.CategoryResponse{
+		Response: &types.Response{
+			HTTPStatusCode: http.StatusOK,
+		},
+		Category: category,
+	})
+}
+
+func (s *APIServer) deleteCategory(w http.ResponseWriter, r *http.Request) error {
+	ctx := r.Context()
+	category, ok := ctx.Value("category").(*types.Category)
+	if !ok {
+		return render.Render(w, r, errUnprocessable)
+	}
+
+	if ok, _ := s.db.DeleteCategoryByID(category.ID); !ok {
+		return render.Render(w, r, errUnprocessable)
+	}
+
+	return render.Render(w, r, &types.CategoryResponse{
+		Response: &types.Response{
+			HTTPStatusCode: http.StatusOK,
+		},
+		Category: category,
+	})
+}
+
+func (s *APIServer) createCategory(w http.ResponseWriter, r *http.Request) error {
+	data := &types.CreateCategoryRequest{}
+	if err := render.Bind(r, data); err != nil {
+		return render.Render(w, r, errBadRequest(err))
+	}
+
+	category := &types.Category{
+		Name: data.Name,
+	}
+
+	err := s.db.CreateCategory(category)
+	if err != nil {
+		return err
+	}
+
+	return render.Render(w, r, &types.CategoryResponse{
+		Response: &types.Response{
+			HTTPStatusCode: http.StatusOK,
+		},
+		Category: category,
+	})
+}

internal/storage/datastore.go

@@ -129,3 +129,37 @@ func (s *DataStore) DeleteShelfByID(id uint64) (bool, error) {
 	}
 	return true, nil
 }
+
+func (s *DataStore) GetCategoryByID(id uint64) (*types.Category, error) {
+	var result types.Category
+	tx := s.db.Model(&types.Category{}).Where("id = ?", id).First(&result)
+	if tx.Error != nil {
+		return nil, fmt.Errorf("category %d not found", id)
+	}
+	return &result, nil
+}
+
+func (s *DataStore) GetCategories(offset, limit int) ([]*types.Category, error) {
+	var categories []*types.Category
+	s.db.Offset(offset).Limit(limit).Find(&categories)
+	if len(categories) == 0 {
+		return nil, fmt.Errorf("no categories found")
+	}
+	return categories, nil
+}
+
+func (s *DataStore) TotalCategories() (int64, error) {
+	var count int64
+	if tx := s.db.Find(&types.Category{}).Count(&count); tx.Error != nil {
+		return 0, tx.Error
+	}
+	return count, nil
+}
+
+func (s *DataStore) DeleteCategoryByID(id uint64) (bool, error) {
+	tx := s.db.Delete(&types.Category{}, id)
+	if tx.Error != nil {
+		return false, fmt.Errorf("unable to delete: %s", tx.Error.Error())
+	}
+	return true, nil
+}

internal/types/categories.go

@@ -1,6 +1,7 @@
 package types
 
 import (
+	"net/http"
 	"time"
 
 	"gorm.io/gorm"
@@ -23,6 +24,23 @@ type Category struct {
 	Requests
 */
 
+type CreateCategoryRequest struct {
+	Name string `json:"name"`
+}
+
+func (c CreateCategoryRequest) Bind(r *http.Request) error { return nil }
+
 /*
 Responses
 */
+
+type CategoryResponse struct {
+	*Response
+	Category *Category `json:"category"`
+}
+
+type MultipleCategoryResponse struct {
+	*Response
+	Categories []*Category `json:"categories"`
+	Total      int64       `json:"total"`
+}