Added "create list" handler, service + repository

internal/api/handler/list.go

@@ -0,0 +1,35 @@
+package handler
+
+import (
+	"log/slog"
+	"net/http"
+
+	"github.com/robindittmar/dttmr-api/internal/api/request"
+	"github.com/robindittmar/dttmr-api/internal/api/response"
+	"github.com/robindittmar/dttmr-api/internal/domain"
+)
+
+type ListHandler struct {
+	ListService *domain.ListService
+}
+
+func (h *ListHandler) CreateList(w http.ResponseWriter, r *http.Request) {
+	ctx := r.Context()
+
+	payload, err := request.DecodeCreateList(r)
+	if err != nil {
+		slog.ErrorContext(ctx, "Failed to decode create list payload", slog.Any("error", err))
+		response.Error(ctx, w, http.StatusBadRequest, "Failed to decode request body")
+		return
+	}
+
+	list, err := h.ListService.Create(ctx, payload.Name, payload.UserIDs)
+	if err != nil {
+		slog.ErrorContext(ctx, "Failed to create list", slog.Any("error", err))
+		response.Error(ctx, w, http.StatusInternalServerError, "Failed to create list")
+		return
+	}
+
+	slog.InfoContext(ctx, "Created list successfully", slog.Any("list_id", list.ID))
+	response.JSON(ctx, w, http.StatusCreated, list)
+}