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export const DEFAULT_WELCOME_SUBTEXT =
"Settle in, say hello, and enjoy the server."
export const WELCOME_FONT_FAMILY =
'"Cleo Geist latin", "Cleo Geist latin-ext", "Cleo Geist cyrillic", "Cleo Geist cyrillic-ext", sans-serif'
export const WELCOME_FONT_SUBSETS = [
"latin",
"latin-ext",
"cyrillic",
"cyrillic-ext",
] as const
export const WELCOME_PRESETS = [
{ id: "classic", name: "Cleo Classic", premium: false },
{ id: "aurora", name: "Aurora", premium: true },
{ id: "spotlight", name: "Spotlight", premium: true },
{ id: "ribbon", name: "Ribbon", premium: true },
] as const
export const WELCOME_PALETTES = {
cyan: { background: "#071013", secondary: "#111827", accent: "#22d3ee" },
orchid: { background: "#170e24", secondary: "#312050", accent: "#e879f9" },
forest: { background: "#071a14", secondary: "#15392b", accent: "#34d399" },
amber: { background: "#1c1408", secondary: "#3b2811", accent: "#fbbf24" },
} as const
export type WelcomeCardStyle = {
preset: (typeof WELCOME_PRESETS)[number]["id"]
palette: keyof typeof WELCOME_PALETTES
greeting: string
align: "left" | "center"
}
export const FREE_WELCOME_STYLE: WelcomeCardStyle = {
preset: "classic",
palette: "cyan",
greeting: "Welcome, {member}",
align: "left",
}
export function parseWelcomeCardStyle(value: unknown): WelcomeCardStyle {
if (!value || typeof value !== "object")
throw new Error("Invalid welcome-card style")
if (
!("preset" in value) ||
!("palette" in value) ||
!("greeting" in value) ||
!("align" in value)
)
throw new Error("Incomplete welcome-card style")
const { preset, palette, greeting, align } = value
if (
preset !== "classic" &&
preset !== "aurora" &&
preset !== "spotlight" &&
preset !== "ribbon"
)
throw new Error("Unknown welcome-card preset")
if (
palette !== "cyan" &&
palette !== "orchid" &&
palette !== "forest" &&
palette !== "amber"
)
throw new Error("Unknown welcome-card palette")
if (align !== "left" && align !== "center")
throw new Error("Unknown welcome-card alignment")
if (
typeof greeting !== "string" ||
greeting.trim().length === 0 ||
greeting.length > 120 ||
/[{}]/.test(greeting.replace(/\{(?:member|server)\}/g, ""))
)
throw new Error(
"Use up to 120 characters and only {member} or {server} placeholders"
)
return { preset, palette, greeting, align }
}
export function isFreeWelcomeStyle(style: WelcomeCardStyle): boolean {
return (
style.preset === "classic" &&
style.palette === "cyan" &&
style.greeting === FREE_WELCOME_STYLE.greeting &&
style.align === "left"
)
}
const segmenter = new Intl.Segmenter("en", { granularity: "grapheme" })
export function welcomeGraphemes(value: string): string[] {
return Array.from(segmenter.segment(value), (entry) => entry.segment)
}
export function cleanWelcomeText(value: string): string {
return value
.replace(/[\p{Cc}\p{Bidi_Control}]/gu, " ")
.replace(/\s+/gu, " ")
.trim()
}
export function formatWelcomeGreeting(
template: string,
member: string,
server: string
): string {
return template.replace(/\{(member|server)\}/g, (_, token: string) =>
token === "member" ? member : server
)
}
export type WelcomeTextToken =
| { kind: "text"; value: string }
| { kind: "emoji"; value: string; key: string }
| { kind: "custom"; value: string; id: string; name: string }
export function welcomeTextRuns(
tokens: WelcomeTextToken[]
): WelcomeTextToken[] {
const runs: WelcomeTextToken[] = []
for (const token of tokens) {
const last = runs.at(-1)
if (token.kind === "text" && last?.kind === "text")
last.value += token.value
else runs.push({ ...token })
}
return runs
}
export function welcomeTextTokens(
value: string,
customEmoji = false
): WelcomeTextToken[] {
const tokens: WelcomeTextToken[] = []
// Custom markup is accepted only in intentional welcome-copy fields.
const parts = customEmoji
? value.split(/(<a?:[A-Za-z0-9_]{2,32}:\d{17,20}>)/g)
: [value]
for (const part of parts) {
const custom = customEmoji
? /^<a?:([A-Za-z0-9_]{2,32}):(\d{17,20})>$/.exec(part)
: null
if (custom?.[1] && custom[2]) {
tokens.push({
kind: "custom",
value: part,
id: custom[2],
name: custom[1],
})
continue
}
for (const grapheme of welcomeGraphemes(part)) {
if (
/\p{Extended_Pictographic}|\p{Regional_Indicator}|\u20e3/u.test(
grapheme
) &&
!grapheme.includes("\ufe0e")
) {
const code = grapheme.replace(/\ufe0f/g, "")
const key = Array.from(code, (point) =>
point.codePointAt(0)!.toString(16)
).join("-")
tokens.push({ kind: "emoji", value: grapheme, key })
} else tokens.push({ kind: "text", value: grapheme })
}
}
return tokens
}
type TextMetricsContext = {
font: string
measureText(text: string): { width: number }
}
export function fitWelcomeText(
context: TextMetricsContext,
tokens: WelcomeTextToken[],
maxWidth: number,
fontSize: number,
weight = 600
): { tokens: WelcomeTextToken[]; size: number; width: number } {
const width = (items: WelcomeTextToken[], size: number) =>
welcomeTextRuns(items).reduce(
(total, token) =>
total +
(token.kind === "text" ? context.measureText(token.value).width : size),
0
)
let size = fontSize
context.font = `${weight} ${size}px ${WELCOME_FONT_FAMILY}`
while (width(tokens, size) > maxWidth && size > 18) {
size = Math.max(18, size - 2)
context.font = `${weight} ${size}px ${WELCOME_FONT_FAMILY}`
}
const fitted = [...tokens]
if (width(fitted, size) > maxWidth) {
const ellipsis: WelcomeTextToken = { kind: "text", value: "…" }
while (fitted.length && width([...fitted, ellipsis], size) > maxWidth)
fitted.pop()
if (context.measureText(ellipsis.value).width <= maxWidth)
fitted.push(ellipsis)
}
return { tokens: fitted, size, width: width(fitted, size) }
}
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