init record notion

src/modules/record/interfaces/recordable.ts

@@ -0,0 +1,7 @@
+export interface Recordable {
+  id: string
+  taskId: string
+  start: Date
+  end?: Date
+  stepRecords: Record<string, { minutes: number }>
+}

src/modules/record/models/task-record.ts

@@ -0,0 +1,22 @@
+import type { Recordable } from '../interfaces/recordable'
+
+export class TaskRecord implements Recordable {
+  public start: Date = new Date()
+  public end: Date | undefined = undefined
+  public stepRecords: Record<string, { minutes: number }> = {}
+
+  public constructor(
+    public readonly id: string,
+    public readonly taskId: string
+  ) {}
+
+  public get duration(): number | null {
+    if (!this.end) {
+      return null
+    }
+
+    const durationMilliseconds = this.end.getTime() - this.start.getTime()
+
+    return Math.round(durationMilliseconds / (1000 * 60))
+  }
+}