[Product Creation AI] Tracking for M3

[selanthiraiyan]

Part of: #13118

Description

Starts tracking the number of words entered in the "Starting Information" screen.

Internal - p1721819695107559/1721819689.954159-slack-C03L1NF1EA3

Steps to reproduce

• Login into a store eligible for Jetpack AI
• Start the AI product creation flow
• Type features in the "Starting Information" screen.
• Alternatively, you can select a package image to auto detect and fill features.
• Tap on "Generate Product Details" button
• From Xcode logs validate that the following event is tracked.

🔵 Tracked product_creation_ai_generate_details_tapped, properties: [was_ecommerce_trial: false, is_wpcom_store: false, blog_id: 123, feature_word_count: 12, site_url: https://test.com, store_id: 1230, is_first_attempt: true, plan: jetpack_free]

• The feature_word_count should reflect the number of words entered in the text field.
• Once the generation is completed, you should see the product preview screen with generated details.
• Tap on the "Generate Again" button at the bottom of the screen.
• From Xcode logs, validate that the product_creation_ai_generate_details_tapped event is tracked again with the feature_word_count property.

Screenshots

Starting information	Preview screen

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• I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.

[dangermattic]

	1 Warning
⚠️	This PR is assigned to the milestone 19.7. This milestone is due in less than 2 days. Please make sure to get it merged by then or assign it to a milestone with a later deadline.

Generated by 🚫 Danger

[wpmobilebot]

📲 You can test the changes from this Pull Request in WooCommerce iOS by scanning the QR code below to install the corresponding build.

	App Name	WooCommerce iOS
	Build Number	pr13411-c5aacd4
	Version	19.6
	Bundle ID	com.automattic.alpha.woocommerce
	Commit	c5aacd4
	App Center Build	WooCommerce - Prototype Builds #10129

Automatticians: You can use our internal self-serve MC tool to give yourself access to App Center if needed.

[itsmeichigo]

This works as expected! I left some suggestions for improvements, please feel free to merge after checking them out.

[itsmeichigo]

Nit: this can be simplified using components(separatedBy:):

Suggested change

	let wordCount = features.split { $0 == " " || $0.isNewline }.count
	let wordCount = features.components(separatedBy: .whitespacesAndNewlines).count

[selanthiraiyan]

Thanks for the suggestion, Huong! Done in 2a81f1d

[itsmeichigo]

❓ I wonder why the values have to be optional. We can replace WooAnalyticsEventPropertyType? with any WooAnalyticsEventPropertyType instead, right?

[selanthiraiyan]

Good question. I earlier kept the features as an optional parameter, and I missed updating it again.

Simplified code in c5aacd4