35 lines
1.1 KiB
TypeScript
35 lines
1.1 KiB
TypeScript
let cachedToken: { token: string; expiresAt: number } | null = null
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export async function getAccessToken(): Promise<string> {
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if (cachedToken && Date.now() < cachedToken.expiresAt - 30_000) {
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return cachedToken.token
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}
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const refreshToken = process.env.SPOTIFY_REFRESH_TOKEN
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if (!refreshToken) throw new Error('SPOTIFY_REFRESH_TOKEN not set')
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const clientId = process.env.SPOTIFY_CLIENT_ID!
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const clientSecret = process.env.SPOTIFY_CLIENT_SECRET!
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const res = await fetch('https://accounts.spotify.com/api/token', {
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method: 'POST',
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headers: {
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'Content-Type': 'application/x-www-form-urlencoded',
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Authorization: `Basic ${Buffer.from(`${clientId}:${clientSecret}`).toString('base64')}`,
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},
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body: new URLSearchParams({
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grant_type: 'refresh_token',
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refresh_token: refreshToken,
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}),
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})
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const data = await res.json()
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if (!data.access_token) throw new Error(`Spotify token refresh failed: ${JSON.stringify(data)}`)
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cachedToken = {
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token: data.access_token,
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expiresAt: Date.now() + (data.expires_in || 3600) * 1000,
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}
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return cachedToken.token
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}
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