refactor(web): extract project drag helpers

2026-04-01 10:06:32 +02:00
parent c32f56ba89
commit 892a9c5ccf
5 changed files with 200 additions and 32 deletions
@@ -0,0 +1,100 @@
+import { describe, expect, it } from "vitest";
+import { buildProjectShiftMutationInput, createProjectDragState } from "./timelineProjectDrag.js";
+
+type TestProjectDragState = {
+  isDragging: boolean;
+  projectId: string | null;
+  projectName: string | null;
+  allocationId: string | null;
+  originalStartDate: Date | null;
+  originalEndDate: Date | null;
+  currentStartDate: Date | null;
+  currentEndDate: Date | null;
+  startMouseX: number;
+  pointerDeltaX: number;
+  originalLeft: number;
+  blockWidth: number;
+  daysDelta: number;
+};
+
+describe("timelineProjectDrag", () => {
+  it("creates project-bar drag state with default legacy metrics cleared", () => {
+    expect(
+      createProjectDragState<TestProjectDragState>({
+        projectId: "project-1",
+        projectName: "Alpha",
+        startDate: new Date("2025-01-10T00:00:00.000Z"),
+        endDate: new Date("2025-01-20T00:00:00.000Z"),
+        startMouseX: 240,
+      }),
+    ).toEqual({
+      isDragging: true,
+      projectId: "project-1",
+      projectName: "Alpha",
+      allocationId: null,
+      originalStartDate: new Date("2025-01-10T00:00:00.000Z"),
+      originalEndDate: new Date("2025-01-20T00:00:00.000Z"),
+      currentStartDate: new Date("2025-01-10T00:00:00.000Z"),
+      currentEndDate: new Date("2025-01-20T00:00:00.000Z"),
+      startMouseX: 240,
+      pointerDeltaX: 0,
+      originalLeft: 0,
+      blockWidth: 0,
+      daysDelta: 0,
+    });
+  });
+
+  it("preserves allocation metadata and block geometry for legacy allocation-block drags", () => {
+    expect(
+      createProjectDragState<TestProjectDragState>({
+        projectId: "project-1",
+        projectName: "Alpha",
+        allocationId: "alloc-7",
+        startDate: new Date("2025-01-10T00:00:00.000Z"),
+        endDate: new Date("2025-01-20T00:00:00.000Z"),
+        startMouseX: 320,
+        originalLeft: 144,
+        blockWidth: 96,
+      }),
+    ).toMatchObject({
+      allocationId: "alloc-7",
+      originalLeft: 144,
+      blockWidth: 96,
+    });
+  });
+
+  it("refuses to build mutation input for no-op drags or incomplete state", () => {
+    expect(
+      buildProjectShiftMutationInput({
+        projectId: "project-1",
+        currentStartDate: new Date("2025-01-10T00:00:00.000Z"),
+        currentEndDate: new Date("2025-01-20T00:00:00.000Z"),
+        daysDelta: 0,
+      }),
+    ).toBeNull();
+
+    expect(
+      buildProjectShiftMutationInput({
+        projectId: null,
+        currentStartDate: new Date("2025-01-10T00:00:00.000Z"),
+        currentEndDate: new Date("2025-01-20T00:00:00.000Z"),
+        daysDelta: 2,
+      }),
+    ).toBeNull();
+  });
+
+  it("builds mutation input only when a real drag produced complete dates", () => {
+    expect(
+      buildProjectShiftMutationInput({
+        projectId: "project-1",
+        currentStartDate: new Date("2025-01-12T00:00:00.000Z"),
+        currentEndDate: new Date("2025-01-22T00:00:00.000Z"),
+        daysDelta: 2,
+      }),
+    ).toEqual({
+      projectId: "project-1",
+      newStartDate: new Date("2025-01-12T00:00:00.000Z"),
+      newEndDate: new Date("2025-01-22T00:00:00.000Z"),
+    });
+  });
+});