42 lines
1.3 KiB
TypeScript
42 lines
1.3 KiB
TypeScript
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import {derived} from "svelte/store"
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import type {Readable} from "svelte/store"
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import {now, removeUndefined} from "@welshman/lib"
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import {fromMsats} from "@welshman/util"
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import type {TrustedEvent} from "@welshman/util"
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import {ZapGoal} from "@welshman/domain"
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import type {Zap} from "@welshman/domain"
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import {ZapGoals} from "@welshman/app"
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import {app, reader} from "@app/core"
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export type GoalProgress = {
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zaps: Zap[]
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raised: number
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target: number
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percent: number
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backers: string[]
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isFunded: boolean
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isEnded: boolean
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closedAt?: number
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}
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// Welshman tallies a goal in millisats; the pages show sats, and compare in millisats so a
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// goal isn't funded a rounded sat early.
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export const deriveGoalProgress = (event: TrustedEvent, url?: string): Readable<GoalProgress> => {
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const closedAt = reader(ZapGoal)(event).closedAt()
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const progress = app
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.get()
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.use(ZapGoals)
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.progress(event, removeUndefined([url])).$
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return derived(progress, $progress => ({
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zaps: $progress.zaps,
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raised: fromMsats($progress.amount),
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target: fromMsats($progress.target),
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percent: $progress.target > 0 ? Math.round(($progress.amount / $progress.target) * 100) : 0,
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backers: $progress.contributors,
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isFunded: $progress.target > 0 && $progress.amount >= $progress.target,
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isEnded: Boolean(closedAt && closedAt < now()),
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closedAt,
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}))
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}
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