First implementation of fetching collections of book managed by user

internal/routes/collectionsget.go

@@ -0,0 +1,41 @@
+package routes
+
+import (
+	"net/http"
+
+	"git.artlef.fr/bibliomane/internal/adapter"
+	"git.artlef.fr/bibliomane/internal/appcontext"
+	"git.artlef.fr/bibliomane/internal/dto"
+	"git.artlef.fr/bibliomane/internal/myvalidator"
+	"git.artlef.fr/bibliomane/internal/query"
+)
+
+func GetCollectionsHandler(ac appcontext.AppContext) {
+	user, err := ac.GetAuthenticatedUser()
+	if err != nil {
+		myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
+		return
+	}
+	limit, err := ac.GetQueryLimit()
+	if err != nil {
+		myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
+		return
+	}
+	offset, err := ac.GetQueryOffset()
+	if err != nil {
+		myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
+		return
+	}
+	collectionsDb, err := query.FetchAllCollections(ac.Db, user.ID, limit, offset)
+	if err != nil {
+		myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
+		return
+	}
+	collections := adapter.CollectionQueryToDto(collectionsDb)
+	count, err := query.FetchAllCollectionsCount(ac.Db, user.ID)
+	if err != nil {
+		myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
+		return
+	}
+	ac.C.JSON(http.StatusOK, dto.CollectionItemsGet{Count: count, Collections: collections})
+}