feat: multi-module iteration

packages/domain/src/dev-plan.ts

@@ -0,0 +1,63 @@
+export type DevPlanTaskStatus = 'TODO' | 'DEVELOPED' | 'RELEASED';
+export type DevPlanVersionStatus = 'PENDING' | 'IN_PROGRESS' | 'TESTING' | 'RELEASED';
+
+export function computeDurationMinutes(
+  devStartedAt: Date | null | undefined,
+  devCompletedAt: Date | null | undefined,
+): number | null {
+  if (!devStartedAt || !devCompletedAt) return null;
+  const ms = devCompletedAt.getTime() - devStartedAt.getTime();
+  if (ms < 0) return null;
+  return Math.round(ms / 60000);
+}
+
+export function versionStatusTimestamps(
+  prev: DevPlanVersionStatus,
+  next: DevPlanVersionStatus,
+  current: {
+    devStartedAt?: Date | null;
+    devCompletedAt?: Date | null;
+    releasedAt?: Date | null;
+  },
+): {
+  devStartedAt?: Date | null;
+  devCompletedAt?: Date | null;
+  releasedAt?: Date | null;
+  durationMinutes?: number | null;
+} {
+  const patch: {
+    devStartedAt?: Date | null;
+    devCompletedAt?: Date | null;
+    releasedAt?: Date | null;
+    durationMinutes?: number | null;
+  } = {};
+  const now = new Date();
+
+  if (next === 'IN_PROGRESS' && !current.devStartedAt) {
+    patch.devStartedAt = now;
+  }
+  if (next === 'TESTING' && !current.devCompletedAt) {
+    patch.devCompletedAt = now;
+  }
+  if (next === 'RELEASED' && !current.releasedAt) {
+    patch.releasedAt = now;
+  }
+
+  const started = patch.devStartedAt ?? current.devStartedAt ?? null;
+  const completed = patch.devCompletedAt ?? current.devCompletedAt ?? null;
+  const duration = computeDurationMinutes(started, completed);
+  if (duration != null) patch.durationMinutes = duration;
+
+  void prev;
+  return patch;
+}
+
+export function taskCompletedAtOnStatus(
+  prev: DevPlanTaskStatus,
+  next: DevPlanTaskStatus,
+  currentCompletedAt?: Date | null,
+): Date | null | undefined {
+  if (next === 'RELEASED' && !currentCompletedAt) return new Date();
+  void prev;
+  return undefined;
+}