Edit contributions flow

[PeteTheHeat]

Let's align on what makes sense for this flow before building it. Some random thoughts:

• Might be nice to have current balance on this screen to help user decide how much to contribute.
• I like the idea of calculating "runway" aka. how many days current balance will last at contribution rate.
• Most straight forward UI would be some sort of chart of currency -> contribution. Do we want to list all supported currencies? So even if user is only buying BTC, you'd see ETH, SOL ... as 0.

I sketched a rough idea here, let me know what you think.

[PeteTheHeat]

For comparison, here is what fidelity looks like when adjusting 401k contributions:

We could do something similar with "current contribution", "desired contribution". I don't have a strong preference.

[nrakover]

I like the sketch above 👍 Given that there's a large number of assets available, I think it might get overwhelming to inline the assets that the user isn't currently DCA'ing into, and instead we might want to add a little Add asset... widget that gives you a search/dropdown to select additional assets -- wdyt? We can start with a simple dropdown

[nrakover]

Re: the daily total and runway, I actually think it would be cool to keep those in the "Edit" view and have them live-update as you edit the amounts prior to hitting Save, since it seems like a useful signal for people to map out their allocations

[nrakover]

Some additional cases to think about:

• Removing an asset from your allocations. Do you set it to zero, or is there a little x/trashcan? IMO we prob want to have an explicit delete action
• Contribution limits: each asset has its own minimum purchase amount (in USD I think), so we'll need to check the allocation against the limit and surface a message to the user if it's too low

[nrakover]

Re: contribution limits and adding new assets, we probably want to treat https://docs.cloud.coinbase.com/exchange/reference/exchangerestapi_getproducts as the source of truth

[PeteTheHeat]

Ah yeah, didn't realize we supported all trading pairs, definitely need a dropdown. Agree on the explicit delete.

So remaining todo's here:

• [x] support adding new assets
• [x] add daily total and runway to edit screen
• [ ] support explicit delete
• [ ] check contribution limits
  • [x] after they hit save
  • [ ] while editing

[nrakover]

• [x] implemented daily total in https://github.com/637labs/crypto-dollar-cost-averaging/pull/31 🧮

[nrakover]

implemented current USD balance and cash runway in https://github.com/637labs/crypto-dollar-cost-averaging/pull/35