state election map

web/components/usa-map/state-election-map.tsx

@@ -0,0 +1,63 @@
+import { zip } from 'lodash'
+import Router from 'next/router'
+import { useEffect, useState } from 'react'
+
+import { getProbability } from 'common/calculate'
+import { Contract, CPMMBinaryContract } from 'common/contract'
+import { Customize, USAMap } from './usa-map'
+import { getContractFromSlug } from 'web/lib/firebase/contracts'
+
+export interface StateElectionMarket {
+  creatorUsername: string
+  slug: string
+  isWinRepublican: boolean
+  state: string
+}
+
+export function StateElectionMap(props: { markets: StateElectionMarket[] }) {
+  const { markets } = props
+
+  const contracts = useContracts(markets.map((m) => m.slug))
+  const probs = contracts.map((c) =>
+    c ? getProbability(c as CPMMBinaryContract) : 0.5
+  )
+  const marketsWithProbs = zip(markets, probs) as [
+    StateElectionMarket,
+    number
+  ][]
+
+  const stateInfo = marketsWithProbs.map(([market, prob]) => [
+    market.state,
+    {
+      fill: probToColor(prob, market.isWinRepublican),
+      clickHandler: () =>
+        Router.push(`/${market.creatorUsername}/${market.slug}`),
+    },
+  ])
+
+  const config = Object.fromEntries(stateInfo) as Customize
+
+  return <USAMap customize={config} />
+}
+
+const probToColor = (prob: number, isWinRepublican: boolean) => {
+  const p = isWinRepublican ? prob : 1 - prob
+  const hue = p > 0.5 ? 350 : 240
+  const saturation = 100
+  const lightness = 100 - 50 * Math.abs(p - 0.5)
+  return `hsl(${hue}, ${saturation}%, ${lightness}%)`
+}
+
+const useContracts = (slugs: string[]) => {
+  const [contracts, setContracts] = useState<(Contract | undefined)[]>(
+    slugs.map(() => undefined)
+  )
+
+  useEffect(() => {
+    Promise.all(slugs.map((slug) => getContractFromSlug(slug))).then(
+      (contracts) => setContracts(contracts)
+    )
+  }, [slugs])
+
+  return contracts
+}

web/components/usa-map/usa-map.tsx

@@ -64,8 +64,7 @@ export const USAMap = ({
 
   const stateClickHandler = (state: string) =>
     customize?.[state]?.clickHandler
-      ? (customize[state].clickHandler as ClickHandler)
-      : onClick
+     
 
   return (
     <svg

web/components/usa-map/usa-state.tsx

@@ -1,10 +1,11 @@
+import clsx from 'clsx'
 import { ClickHandler } from './usa-map'
 
 type USAStateProps = {
   state: string
   dimensions: string
   fill: string
-  onClickState: ClickHandler
+  onClickState?: ClickHandler
   stateName: string
   hideStateTitle?: boolean
 }
@@ -21,14 +22,14 @@ export const USAState = ({
       d={dimensions}
       fill={fill}
       data-name={state}
-      className={`${state} state hover:cursor-pointer hover:contrast-125`}
+      className={clsx(
+        !!onClickState && 'hover:cursor-pointer hover:contrast-125'
+      )}
       onClick={onClickState}
       id={state}
     >
       <text>
-        <textPath xlinkHref={`#${state}`}>
-          {stateName}
-        </textPath>
+        <textPath xlinkHref={`#${state}`}>{stateName}</textPath>
       </text>
       {hideStateTitle ? null : <title>{stateName}</title>}
     </path>