manifold/web/pages/swap.tsx

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import {
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addPosition,
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calculateLPCost,
fromProb,
getSwap3Probability,
noShares,
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sortedTickStates,
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Swap3Pool,
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toProb,
yesShares,
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} from 'common/calculate-swap3'
import { formatPercent } from 'common/util/format'
import { useState } from 'react'
import { LiquidityGraph } from 'web/components/contract/liquidity-graph'
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import { Col } from 'web/components/layout/col'
import { Row } from 'web/components/layout/row'
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const users: Record<string, any> = {
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alice: {
M: 100,
YES: 0,
NO: 0,
},
bob: {
M: 200,
YES: 0,
NO: 0,
},
kipply: {
M: 300,
YES: 0,
NO: 0,
},
}
function BalanceTable() {
/* Display all users current M, YES, and NO in a table */
return (
<table className="w-full">
<thead>
<tr>
<th className="px-4 py-2">User</th>
<th className="px-4 py-2">M</th>
<th className="px-4 py-2">YES</th>
<th className="px-4 py-2">NO</th>
</tr>
</thead>
<tbody>
{Object.keys(users).map((user) => (
<tr key={user}>
<td className="px-4 py-2">{user}</td>
<td className="px-4 py-2">{users[user].M}</td>
<td className="px-4 py-2">{users[user].YES}</td>
<td className="px-4 py-2">{users[user].NO}</td>
</tr>
))}
</tbody>
</table>
)
}
/* Show the values in pool */
function PoolTable(props: { pool: Swap3Pool }) {
const { pool } = props
return (
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<>
<Row className="gap-4">
<div>
<label>Implied: </label>
{formatPercent(getSwap3Probability(pool))}
</div>
<div>
<label>Liquidity: </label>
{pool.liquidity}
</div>
<div>
<label>Tick: </label>
{pool.tick}
</div>
<div>
<label>Pool YES: </label>
{yesShares(pool).toFixed(2)}
</div>
<div>
<label>Pool NO: </label>
{noShares(pool).toFixed(2)}
</div>
</Row>
{/* Render each tickState as another row in a table */}
<table className="w-full">
<thead>
<tr>
<th className="px-4 py-2">Tick</th>
<th className="px-4 py-2">Prob</th>
<th className="px-4 py-2">Net Liquidity</th>
</tr>
</thead>
{sortedTickStates(pool).map((tickState, i) => (
<tr key={i}>
<td className="px-4 py-2">{tickState.tick}</td>
<td className="px-4 py-2">
{formatPercent(toProb(tickState.tick))}
</td>
<td className="px-4 py-2">{tickState.liquidityNet}</td>
</tr>
))}
</table>
</>
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)
}
function Graph(props: { pool: Swap3Pool }) {
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const { pool } = props
let liquidity = 100 // TODO unhardcode
const points = [{ x: 0, y: liquidity }]
for (const tickState of sortedTickStates(pool)) {
points.push({ x: toProb(tickState.tick), y: liquidity })
liquidity += tickState.liquidityNet
points.push({ x: toProb(tickState.tick), y: liquidity })
}
points.push({ x: 1, y: liquidity })
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return <LiquidityGraph points={points} marker={toProb(pool.tick)} />
}
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export default function Swap() {
const [pool, setPool] = useState({
liquidity: 100,
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tick: fromProb(0.3),
tickStates: [],
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})
const [minTick, setMinTick] = useState(0)
const [maxTick, setMaxTick] = useState(0)
const { requiredN, requiredY } = calculateLPCost(
pool.tick,
minTick,
maxTick,
100 // deltaL
)
return (
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<Col className="mx-auto max-w-2xl gap-10 p-4">
{/* <BalanceTable /> */}
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<PoolTable pool={pool} />
<Graph pool={pool} />
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<input
className="input"
placeholder="Current%"
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type="number"
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onChange={(e) => {
pool.tick = inputPercentToTick(e)
setPool({ ...pool })
}}
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/>
<Col>
Alice: Add liquidity
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{/* <input className="input" placeholder="Amount" type="number" /> */}
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<input
className="input"
placeholder="Min%"
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type="number"
onChange={(e) => setMinTick(inputPercentToTick(e))}
/>
Min Tick: {minTick}
<input
className="input"
placeholder="Max%"
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type="number"
onChange={(e) => setMaxTick(inputPercentToTick(e))}
/>
Max Tick: {maxTick}
<Row className="gap-2 py-2">
<div>Y required: {requiredY}</div>
<div>N required: {requiredN}</div>{' '}
</Row>
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<button
className="btn"
onClick={() => {
addPosition(pool, minTick, maxTick, 100)
setPool({ ...pool })
}}
>
Create pool
</button>
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</Col>
<Col>
Bob: Buy Tokens
{/* <input className="input" placeholder="User" type="text" /> */}
<input className="input" placeholder="Amount" type="number" />
<Row className="gap-2">
<button className="btn">Buy YES</button>
<button className="btn">Buy NO</button>
</Row>
</Col>
</Col>
)
}
function inputPercentToTick(event: React.ChangeEvent<HTMLInputElement>) {
return fromProb(parseFloat(event.target.value) / 100)
}