78 lines
2.5 KiB
TypeScript
78 lines
2.5 KiB
TypeScript
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import {ParsedType, isImage, parse} from "@welshman/content"
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import type {Parsed} from "@welshman/content"
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import type {TrustedEvent} from "@welshman/util"
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import {profiles} from "@app/core"
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// Welshman's text renderer resolves an entity or a link to the string it links to, so anything
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// reading a message as text rather than rendering it as components gets a hundred characters of
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// bech32 where a quote was. Everything that is not prose is named instead.
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export const renderNode = (parsed: Parsed): string => {
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switch (parsed.type) {
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case ParsedType.Address:
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return "another post"
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case ParsedType.Cashu:
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return "a cashu token"
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case ParsedType.Code:
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return parsed.value
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case ParsedType.Command:
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return parsed.raw
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case ParsedType.Ellipsis:
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return "…"
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case ParsedType.Email:
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return parsed.value
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case ParsedType.Emoji:
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return parsed.value.name
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case ParsedType.Event:
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return "another message"
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case ParsedType.Invoice:
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return "a lightning invoice"
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case ParsedType.Link: {
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const {host} = parsed.value.url
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return isImage(parsed) ? "an image" : `a link to ${host}`
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}
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case ParsedType.LinkGrid:
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return "some images"
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case ParsedType.Newline:
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return parsed.value
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case ParsedType.Profile:
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return profiles.get().display(parsed.value.pubkey).get()
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case ParsedType.Room:
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return parsed.value.room
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case ParsedType.Text:
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return parsed.value
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case ParsedType.Topic:
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return parsed.value.slice(1)
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}
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}
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export const renderNodes = (parsed: Parsed[]) => parsed.map(renderNode).join("")
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export const renderEventAsText = (event: TrustedEvent) => renderNodes(parse(event)).trim()
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const splitLines = (parsed: Parsed[]) => {
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const lines: Parsed[][] = [[]]
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for (const node of parsed) {
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if (node.type === ParsedType.Newline) {
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lines.push([])
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} else {
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lines[lines.length - 1].push(node)
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}
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}
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return lines.filter(line => line.length > 0)
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}
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const hasProse = (line: Parsed[]) =>
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line.some(node => node.type === ParsedType.Text && node.value.trim().length > 0)
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// A reply prepends the message it answers, so the first line of one describes the quote and says
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// nothing about the reply. The first line carrying words of its own is what the message is about.
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export const renderEventAsSummary = (event: TrustedEvent) => {
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const lines = splitLines(parse(event))
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const line = lines.find(hasProse) || lines[0] || []
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return renderNodes(line).trim()
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}
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