feat: [EXA-1487] node-view event tracking

packages/universal/api-schemas/src/experience/index.ts

@@ -7,3 +7,4 @@ export * from './ExperienceResponse'
 export * from './optimization'
 export * from './profile'
 export * from './ResponseEnvelope'
+export * from './sourceMap'

packages/universal/api-schemas/src/experience/sourceMap/SourceMap.test.ts

@@ -0,0 +1,56 @@
+import { describe, expect, it } from '@rstest/core'
+import { SourceMap } from './SourceMap'
+
+const VALID_SOURCE_MAP = {
+  variants: [
+    { type: 'personalization', id: 'default' },
+    { type: 'personalization', id: 'variant-a' },
+  ],
+  layers: [
+    { kind: 'Experience', id: 'exp-id', variants: [1] },
+    { kind: 'Fragment', id: 'frag-id' },
+  ],
+  nodes: {
+    'node-1': { layers: [0], scope: 0 },
+    'node-2': { layers: [1, 0], scope: 1 },
+  },
+}
+
+describe('SourceMap schema', () => {
+  it('accepts a valid sourceMap', () => {
+    const result = SourceMap.safeParse(VALID_SOURCE_MAP)
+
+    expect(result.success).toBe(true)
+  })
+
+  it('accepts layers without variants', () => {
+    const result = SourceMap.safeParse({
+      ...VALID_SOURCE_MAP,
+      layers: [{ kind: 'Fragment', id: 'frag-id' }],
+    })
+
+    expect(result.success).toBe(true)
+  })
+
+  it('rejects missing nodes map', () => {
+    const { nodes: _removed, ...withoutNodes } = VALID_SOURCE_MAP
+    const result = SourceMap.safeParse(withoutNodes)
+
+    expect(result.success).toBe(false)
+  })
+
+  it('rejects node missing scope', () => {
+    const result = SourceMap.safeParse({
+      ...VALID_SOURCE_MAP,
+      nodes: { 'node-1': { layers: [0] } },
+    })
+
+    expect(result.success).toBe(false)
+  })
+
+  it('accepts an empty variants array', () => {
+    const result = SourceMap.safeParse({ ...VALID_SOURCE_MAP, variants: [] })
+
+    expect(result.success).toBe(true)
+  })
+})

packages/universal/api-schemas/src/experience/sourceMap/SourceMap.ts

@@ -0,0 +1,117 @@
+import * as z from 'zod/mini'
+
+/**
+ * A single variant entry from the XDA `extensions.sourceMap.variants` array.
+ *
+ * @public
+ */
+export const SourceMapVariant = z.object({
+  /**
+   * Variant category, e.g. `'personalization'`.
+   */
+  type: z.string(),
+  /**
+   * Variant identifier, e.g. `'default'` or a variant sys.id.
+   */
+  id: z.string(),
+})
+
+/**
+ * TypeScript type inferred from {@link SourceMapVariant}.
+ *
+ * @public
+ */
+export type SourceMapVariant = z.infer<typeof SourceMapVariant>
+
+/**
+ * A structural layer from the XDA `extensions.sourceMap.layers` array.
+ *
+ * @public
+ */
+export const SourceMapLayer = z.object({
+  /**
+   * Structural kind of the layer.
+   *
+   * @remarks
+   * Possible values include `'Experience'`, `'Fragment'`,
+   * `'InlineFragment'`, and `'InlineComponent'`.
+   */
+  kind: z.string(),
+  /**
+   * Contentful sys.id of the Experience or Fragment entry this layer
+   * represents.
+   */
+  id: z.string(),
+  /**
+   * Optional indices into `SourceMap.variants[]` that apply to this layer.
+   *
+   * @remarks
+   * Present only on layers that correspond to an optimization target.
+   */
+  variants: z.optional(z.array(z.number())),
+})
+
+/**
+ * TypeScript type inferred from {@link SourceMapLayer}.
+ *
+ * @public
+ */
+export type SourceMapLayer = z.infer<typeof SourceMapLayer>
+
+/**
+ * Metadata for a single rendered node from the XDA
+ * `extensions.sourceMap.nodes` map.
+ *
+ * @public
+ */
+export const SourceMapNode = z.object({
+  /**
+   * Leaf-to-root indices into `SourceMap.layers[]` for this node.
+   */
+  layers: z.array(z.number()),
+  /**
+   * Index of the nearest ancestor Fragment or Experience layer in
+   * `SourceMap.layers[]`.
+   */
+  scope: z.number(),
+})
+
+/**
+ * TypeScript type inferred from {@link SourceMapNode}.
+ *
+ * @public
+ */
+export type SourceMapNode = z.infer<typeof SourceMapNode>
+
+/**
+ * Zod schema for the `extensions.sourceMap` object returned in XDA
+ * responses.
+ *
+ * @remarks
+ * The sourceMap provides structural context for each rendered node,
+ * enabling the SDK to resolve entity identity and variant selection
+ * without additional server round-trips.
+ *
+ * @public
+ */
+export const SourceMap = z.object({
+  /**
+   * Flat list of variant entries referenced by layers.
+   */
+  variants: z.array(SourceMapVariant),
+  /**
+   * Flat list of structural layers ordered leaf-to-root.
+   */
+  layers: z.array(SourceMapLayer),
+  /**
+   * Map from rendered node ID to node metadata.
+   */
+  nodes: z.record(z.string(), SourceMapNode),
+})
+
+/**
+ * TypeScript type inferred from {@link SourceMap}.
+ *
+ * @public
+ */
+export type SourceMap = z.infer<typeof SourceMap>

packages/universal/api-schemas/src/experience/sourceMap/index.ts

@@ -0,0 +1 @@
+export * from './SourceMap'

packages/universal/api-schemas/src/insights/event/InsightsEvent.ts

@@ -2,17 +2,23 @@ import * as z from 'zod/mini'
 import { ViewEvent } from '../../experience/event'
 import { ClickEvent } from './ClickEvent'
 import { HoverEvent } from './HoverEvent'
+import { NodeViewEvent } from './NodeViewEvent'
 
 /**
  * Zod schema describing an Insights event.
  *
  * @remarks
  * Insights events include {@link ViewEvent},
- * {@link ClickEvent}, and {@link HoverEvent}.
+ * {@link ClickEvent}, {@link HoverEvent}, and {@link NodeViewEvent}.
  *
  * @public
  */
-export const InsightsEvent = z.discriminatedUnion('type', [ViewEvent, ClickEvent, HoverEvent])
+export const InsightsEvent = z.discriminatedUnion('type', [
+  ViewEvent,
+  ClickEvent,
+  HoverEvent,
+  NodeViewEvent,
+])
 
 /**
  * TypeScript type inferred from {@link InsightsEvent}.

packages/universal/api-schemas/src/insights/event/NodeViewEvent.test.ts

@@ -0,0 +1,77 @@
+import { describe, expect, it } from '@rstest/core'
+import { InsightsEvent } from './InsightsEvent'
+import { NodeViewEvent } from './NodeViewEvent'
+
+const BASE_UNIVERSAL = {
+  channel: 'web' as const,
+  context: {
+    campaign: {},
+    gdpr: { isConsentGiven: true },
+    library: { name: 'test', version: '0.0.0' },
+    locale: 'en-US',
+  },
+  messageId: 'msg-1',
+  originalTimestamp: '2024-01-01T00:00:00.000Z',
+  sentAt: '2024-01-01T00:00:00.000Z',
+  timestamp: '2024-01-01T00:00:00.000Z',
+}
+
+const VALID_NODE_VIEW = {
+  ...BASE_UNIVERSAL,
+  anonymousId: 'anon-id',
+  type: 'exo_view' as const,
+  entityId: 'exp-sys-id',
+  entityKind: 'Experience' as const,
+  variant: 'variant-a',
+  optimizationId: 'opt-id',
+  viewId: 'view-uuid',
+  viewDurationMs: 1500,
+}
+
+describe('NodeViewEvent schema', () => {
+  it('accepts a valid payload', () => {
+    const result = NodeViewEvent.safeParse(VALID_NODE_VIEW)
+
+    expect(result.success).toBe(true)
+  })
+
+  it('accepts all valid entityKind values', () => {
+    const kinds = ['Experience', 'Fragment', 'InlineFragment', 'InlineComponent'] as const
+
+    for (const entityKind of kinds) {
+      const result = NodeViewEvent.safeParse({ ...VALID_NODE_VIEW, entityKind })
+
+      expect(result.success, `entityKind=${entityKind}`).toBe(true)
+    }
+  })
+
+  it('rejects an unknown entityKind', () => {
+    const result = NodeViewEvent.safeParse({ ...VALID_NODE_VIEW, entityKind: 'Unknown' })
+
+    expect(result.success).toBe(false)
+  })
+
+  it('rejects a missing required field', () => {
+    const { entityId: _removed, ...withoutEntityId } = VALID_NODE_VIEW
+    const result = NodeViewEvent.safeParse(withoutEntityId)
+
+    expect(result.success).toBe(false)
+  })
+
+  it('rejects a non-number viewDurationMs', () => {
+    const result = NodeViewEvent.safeParse({ ...VALID_NODE_VIEW, viewDurationMs: 'long' })
+
+    expect(result.success).toBe(false)
+  })
+})
+
+describe('InsightsEvent discriminated union', () => {
+  it('discriminates exo_view correctly', () => {
+    const result = InsightsEvent.safeParse(VALID_NODE_VIEW)
+
+    expect(result.success).toBe(true)
+    if (result.success) {
+      expect(result.data.type).toBe('exo_view')
+    }
+  })
+})