Add support for sending system messages client-side

[nuno-vieira]

🔗 Issue Links

Resolves https://stream-io.atlassian.net/browse/PBE-4505

🎯 Goal

Add support for sending system messages from the SDK.

📝 Summary

• Adds support for sending system messages from the SDK
• Makes sure that when sending system messages with skip the last message date enabled, it does not update the lastMessageAt locally

🎨 Showcase

Simulator.Screen.Recording.-.iPhone.15.Pro.-.2024-10-30.at.15.48.53.mp4

🧪 Manual Testing Notes

Regular Case:
1- Open the Demo App
2- Open the Channel Actions
3- Tap on Send a system message
4- A system message should be rendered on the channel
5- The channel list order should be updated

Skipping System lastMessageAt Case:
1- Open the Demo App
2- Login with Leia Organa
3- Send a system message in the SKipppy channel
4- The channel list order should NOT be updated

☑️ Contributor Checklist

• I have signed the Stream CLA (required)
• This change should be manually QAed
• Changelog is updated with client-facing changes
• Changelog is updated with new localization keys
• New code is covered by unit tests
• Comparison screenshots added for visual changes
• Affected documentation updated (docusaurus, tutorial, CMS)

[Stream-SDK-Bot]

SDK Size

title	develop	branch	diff	status
StreamChat	6.92 MB	6.92 MB	0 KB	🟢
StreamChatUI	4.95 MB	4.95 MB	0 KB	🟢

[Stream-SDK-Bot]

SDK Performance

target	metric	benchmark	branch	performance	status
MessageList	Hitches total duration	10 ms	1.67 ms	83.3% 🔼	🟢
	Duration	2.6 s	2.54 s	2.31% 🔼	🟢
	Hitch time ratio	4 ms per s	0.65 ms per s	83.75% 🔼	🟢
	Frame rate	75 fps	78.46 fps	4.61% 🔼	🟢
	Number of hitches	1	0.2	80.0% 🔼	🟢

[martinmitrevski]

Looks good. I added one suggestion for the db handling, let me know what you think.
Additionally, we need some usage docs before we merge it.

[martinmitrevski]

Isn't it better to use the optional type directly here? If we need to use it for some other type, we would need to use another helper var like this one.

[nuno-vieira]

@martinmitrevski I've removed the isSystem prop. The reason I added this, was because when using the message for the HTTP Request, we should only send the type if it is a system message, but now I check if the type is system, and if yes, then we send it. So the isSystem is not really needed 👍

[nuno-vieira]

Looks good. I added one suggestion for the db handling, let me know what you think. Additionally, we need some usage docs before we merge it.

@martinmitrevski We probably should only update the CMS docs, I don't think updating the UI docs is very valuable 🤔 Also, where would we put this on the UI docs?

[martinmitrevski]

LGTM! About the docs, yes, only the CMS docs. I think Android has this already, so you can follow the same format.

[Stream-SDK-Bot]

SDK Size

title	develop	branch	diff	status
StreamChat	6.92 MB	6.92 MB	0 KB	🟢
StreamChatUI	4.95 MB	4.95 MB	0 KB	🟢

[sonarcloud]

Quality Gate passed

Issues
164 New issues
0 Accepted issues

Measures
0 Security Hotspots
84.4% Coverage on New Code
0.1% Duplication on New Code

See analysis details on SonarCloud