What is the point of interaction file?

[dtnwen]

I don't understand what is Interactions.s.sol for when we can directly interact with the contract. Am I missing something?

Context: https://github.com/Cyfrin/foundry-fund-me-cu/blob/main/script/Interactions.s.sol

[EngrPips]

Hey @dtnwen, How do you intend to directly interact with the contract?

[chainflash]

Previously, we interacted with contract functions manually, for example we used cast and call in the terminal.
With this script we will have a fast and repeatable way to fund and withdraw.
We can enter the following command and view the details in the terminal :

forge script script/Interactions.s.sol:FundFundMe --rpc-url http://127.0.0.1:8545 --private-key $PRIVATE_KEY --broadcast

[dtnwen]

I mean what is this file used for in practice? Like for front end to interact with contract or sth?

[chainflash]

Then you will also write the interactions test file after this script, In fact you want to ensure that you can correctly interact with the functions of this contract or not.
Imagine we want to fund or withdraw from the contract, if this script isn't available do you have a better idea?

[EngrPips]

I mean what is this file used for in practice? Like for front end to interact with contract or sth?

You can use those files to interact with your already-deployed smart contracts from the command line if you are too lazy to put a front-end together for your smart contract.

[chainflash]

Cool

[EngrPips]

Cool

🙇🏾‍♂️