Add a view to see all books in a collection

internal/routes/collectionget.go

@@ -0,0 +1,61 @@
+package routes
+
+import (
+	"errors"
+	"net/http"
+	"strconv"
+
+	"git.artlef.fr/bibliomane/internal/adapter"
+	"git.artlef.fr/bibliomane/internal/appcontext"
+	"git.artlef.fr/bibliomane/internal/i18nresource"
+	"git.artlef.fr/bibliomane/internal/myvalidator"
+	"git.artlef.fr/bibliomane/internal/query"
+	"github.com/gin-gonic/gin"
+)
+
+func GetCollectionHandler(ac appcontext.AppContext) {
+	collectionId, err := strconv.ParseUint(ac.C.Param("id"), 10, 64)
+	if err != nil {
+		ac.C.JSON(http.StatusBadRequest, gin.H{"error": err})
+		return
+	}
+
+	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
+	}
+	collectionBooksDb, err := query.FetchCollectionBooks(ac.Db, uint(collectionId), limit, offset)
+	if err != nil {
+		myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
+		return
+	}
+	collection := adapter.CollectionQueryToCollectionDto(collectionBooksDb)
+	count, err := query.FetchCollectionBooksCount(ac.Db, uint(collectionId))
+	if err != nil {
+		myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
+		return
+	}
+	collection.Count = count
+	if collection.UserID != user.ID {
+		err := myvalidator.HttpError{
+			StatusCode: http.StatusUnauthorized,
+			Err:        errors.New(i18nresource.GetTranslatedMessage(&ac, "Unauthorized")),
+		}
+		myvalidator.ReturnErrorsAsJsonResponse(&ac, err)
+		return
+	} else {
+		ac.C.JSON(http.StatusOK, collection)
+	}
+}