no-loss-lottery

Solana Riptide Hackathon

Basic App Walkthrough

# start validator and load programs
anchor localnet

# set config to localhost to test against a local validator
solana config set -u localhost

# define wallet to use for transactions
# copy path from 'Keypair Path'
export ANCHOR_WALLET=$(solana config get | grep 'Keypair Path' | cut -d ' ' -f3)

# add phantom wallet pubkey used to connect to dapp through browser
export PHANTOM_WALLET="phantom-wallet-pubkey"

# initialize writes pubkeys to 'clientaccounts.env'
# other funcs read from 'clientaccounts.env'
# required for further commands
# will read $PHANTOM_WALLET to mint dummy tokens
ts-node ./sdk/scripts/initialize.ts

# run app in a new terminal
cd app/ && yarn run dev

# navigate to webapp with a browser at http://localhost:3000

# connect to webapp with Phantom and airdrop some SOL for transaction fees
solana airdrop 100 $PHANTOM_WALLET

# stake deposit tokens
ts-node ./sdk/scripts/stake.ts

# draw winning ticket numbers
ts-node ./sdk/scripts/draw.ts

# dispense prize to winner
ts-node ./sdk/scripts/dispense.ts

test

anchor test

lottery flow

• users choose 6 numbers, creates PDA numbers and vault pubkey as seed
• users calls buy adds in their PDA, receives ticket
• cranks call draw, draw selects 6 random numbers and sets these in vault manager config. draw locks buy until find is called
• cranks call dispense, pass in PDA derived from winning numbers generated by draw
• if winning numbers PDA passed to dispense is an already initialized account, send the prize to the owner
• if winning numbers PDA passed to dispense is not initialized, unlock buy, zero out winning numbers, no error

invest flow

• crank calls stake periodically to exchange tokens deposit tokens in deposit_vault for yield tokens in yield_vault via an AMM
• user calls redeem, first look in deposit_vault to see if we have enough liquidity.
• if enough liquidity, transfer deposit tokens back to user`
• if not call swap_tokens to get enough liquidity and transfer deposit tokens back to user.
• if dispense finds winner, calculate prize amount and call swap_tokens to swap all yield tokens for deposit tokens, calculate prize and send to winner.