Integrate LI.FI provider

[JulesFiliot]

closes #697

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Latest commit: 7346075

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❔	Commit	#️⃣	Finished (UTC)	Duration	Platform	Result
✔️	39bd946	#1	2025-06-19 08:45:03	~1 min	wallet	📦zip
✔️	87e9241	#2	2025-06-23 05:18:32	~58 sec	wallet	📦zip
❌	14a52cd	#3	2025-06-23 09:03:47	~2 min	wallet	📄log
✔️	4e2ebb2	#4	2025-06-23 09:05:27	~1 min	wallet	📦zip
✔️	8f8cc04	#5	2025-06-24 09:06:54	~59 sec	wallet	📦zip
✔️	71ef252	#6	2025-07-07 11:30:41	~1 min	wallet	📦zip

❔	Commit	#️⃣	Finished (UTC)	Duration	Platform	Result
✔️	54b8933	#7	2025-07-17 15:43:52	~1 min	wallet	📦zip
✔️	7346075	#9	2025-07-17 18:21:13	~1 min	wallet	📦zip

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[felicio]

@JulesFiliot could you please share an update on this one?

[JulesFiliot]

@JulesFiliot could you please share an update on this one?

Hey @felicio, yes! Sorry for being silent, I've worked a lot on it, including every day of last week. I'll push all my local code today. It's honestly a lot of work because I have to update the connector, wallet API, ethereum transactions handler (apps/wallet/src/data/ethereum/ethereum.ts) and etherscan API methods to support all the transactions needed for the Li.Fi widget. The work is way deeper than just adding the widget UI.

So right now I successfully implemented:

• Swapping on the same chain (i.e. ETH to DAI on base).
• Bridging (i.e. ETH on mainnet to ETH on base).
• Multi-chain support. Opening the exchange dialog will automatically select the token on the correct chain from the current detail view.

What I'm still working on:

• Bridging + swapping at the same time (i.e. ETH on base to DAI on mainnet).

It has been a lot of trials and errors so my code is a bit dirty, I need to clean it before pushing. I'll try my best to integrate bridging + swapping at the same time today.


P.S.: Thanks to @jkbktl's help. He built the first draft of the wallet connector for the portfolio's wagmi provider which allows the li.fi widget to connect to our internal wallet. It helped me a lot.

[JulesFiliot]

@felicio (cc @jkbktl), I just pushed my changes.
The three following features are working:

• Swapping on the same chain (i.e. ETH to DAI on base).
• Bridging (i.e. ETH on mainnet to ETH on base).
• Bridging + swapping at the same time (i.e. ETH on base to DAI on mainnet).
• Multi-chain support. Opening the exchange dialog will automatically select the token on the correct chain from the current detail view. (Sometimes the correct chain selection doesn't work I didn't have the time to investigate this problem)

What should be improved:

• Gas calculation, especially on L2 where it's too high (it can be $6 when we will really pay 10 cents).
• When a transaction is already completed but the UI is still loading, it can take a few minutes to appear as successful on the UI.
• Error handling: error pops over the exchange dialog (you have to press ESC to hide it), it's bad UI/UX. I'm not sure why but the "not enough funds" error we throw appears as "unknown RPC error" (since gas estimation for L2 is high we'll get this error if we have very little funds on our wallet).

[JulesFiliot]

Hey @jkbktl @felicio I forgot to ask if you could review the PR please 🙏 ? I don't have the rights to add reviewers to the PR.

As I mentioned here #716 (comment) there are still things that could be improved but I think the diff from this PR is already huge and I already spent a lot of time working on this so I'd prefer if we can review and ship this. The core features of the widget are working so I would say this is acceptable to ship as is.

[JulesFiliot]

Hey @felicio I see you did some edits on this PR, do you need any input/support from me?