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import { SB1_FIN_INST, SB1_ID, SB1_REDIRECT_URI, SB1_SECRET } from "$env/static/private";
import { eq } from "drizzle-orm";
import { Temporal } from "temporal-polyfill";
import { randomUUID } from "node:crypto";
import { db } from "./db";
import { syncSession } from "./db/schema";
type Sb1Tokens = {
access_token: string
expires_in: number
refresh_token_expires_in: number
refresh_token_absolute_expires_in: number
token_type: string
refresh_token: string
}
export type Transaction = {
id: string
nonUniqueId: string
description: string
cleanedDescription: string
accountNumber: AccountNumber
amount: number
date: number
interestDate: number
typeCode: string
typeText: string
currencyCode: string
canShowDetails: boolean
source: string
isConfidential: boolean
bookingStatus: string
accountName: string
accountKey: string
accountCurrency: string
isFromCurrencyAccount: boolean
classificationInput: ClassificationInput
}
export type AccountNumber = {
value: string
formatted: string
unformatted: string
}
export type ClassificationInput = {
id: string
amount: number
type: string
text: string
date: string
}
const auth = {
async is_ready(): Promise<boolean> {
const token = await this.get_access_token()
return token !== ""
},
async get_auth_info() {
const entity = await db.select({
refreshTokenCreated: syncSession.refreshTokenCreated,
accessTokenCreated: syncSession.accessTokenCreated,
tokens: syncSession.tokens
}).from(syncSession)
if (!entity[0]) return undefined
const { tokens, accessTokenCreated, refreshTokenCreated } = entity[0]
if (!tokens) return undefined
const tokensParsed = JSON.parse(tokens)
if (!tokensParsed) return undefined
const refreshTokenExpires = Temporal.Instant.fromEpochMilliseconds(Number(refreshTokenCreated)).add({ seconds: tokensParsed?.refresh_token_expires_in })
const accessTokenExpires = Temporal.Instant.fromEpochMilliseconds(Number(accessTokenCreated)).add({ seconds: tokensParsed?.expires_in })
return {
refreshTokenExpires,
accessTokenExpires
}
},
async init_auth_session(): Promise<string> {
const state = randomUUID()
await db.insert(syncSession).values({
authzState: state
})
const authorizeUrl = new URL("https://api.sparebank1.no/oauth/authorize");
authorizeUrl.searchParams.set("client_id", SB1_ID);
authorizeUrl.searchParams.set("state", state);
authorizeUrl.searchParams.set("redirect_uri", SB1_REDIRECT_URI);
authorizeUrl.searchParams.set("finInst", SB1_FIN_INST);
authorizeUrl.searchParams.set("response_type", "code");
return authorizeUrl.toString()
},
async get_access_token() {
const result = await db.select({
tokens: syncSession.tokens,
refreshTokenCreated: syncSession.refreshTokenCreated,
accessTokenCreated: syncSession.accessTokenCreated
}).from(syncSession)
const { tokens: _tokens, accessTokenCreated, refreshTokenCreated } = result[0]
let tokens = JSON.parse(_tokens ?? "") as Sb1Tokens
const nowInstant = Temporal.Now.instant()
const accessTokenExpiredInstant = Temporal.Instant.fromEpochMilliseconds(accessTokenCreated ?? 0).add({ seconds: tokens.expires_in })
if (Temporal.Instant.compare(nowInstant, accessTokenExpiredInstant) >= 0) {
const refreshedTokens = await this.refresh_token()
if (refreshedTokens) return refreshedTokens.access_token
}
const refreshTokenExpiredInstant = Temporal.Instant.fromEpochMilliseconds(refreshTokenCreated ?? 0).add({ seconds: tokens.refresh_token_expires_in })
if (Temporal.Instant.compare(nowInstant, refreshTokenExpiredInstant) >= 0) {
return undefined
}
return tokens?.access_token as string
},
async refresh_token(): Promise<Sb1Tokens | null> {
console.log("Refreshing tokens")
const entity = await db.select({
tokens: syncSession.tokens,
id: syncSession.id
}).from(syncSession)
const { tokens, id } = entity[0]
if (!tokens) return null
const parsed = JSON.parse(tokens) as Sb1Tokens
if (!parsed.refresh_token) throw new Error("No refresh token");
const params = new URLSearchParams();
params.set("client_id", SB1_ID);
params.set("client_secret", SB1_SECRET);
params.set("refresh_token", parsed.refresh_token);
params.set("grant_type", "refresh_token");
const res = await fetch("https://api.sparebank1.no/oauth/token", {
headers: {
"Content-Type": "application/x-www-form-urlencoded",
},
method: "POST",
body: params,
});
const text = await res.text()
const epoch = Temporal.Now.instant().epochMilliseconds
if (res.ok) {
await db.update(syncSession).set({ tokens: text, accessTokenCreated: epoch, refreshTokenCreated: epoch }).where(eq(syncSession.id, id))
return JSON.parse(text) as Sb1Tokens
} else {
console.error("Failed to refresh tokens", text)
return null
}
}
}
const data = {
async get_accounts() {
const token = await auth.get_access_token()
if (!token) return undefined
const url = new URL(
"https://api.sparebank1.no/personal/banking/accounts",
);
const response = await fetch(url, {
headers: {
Authorization: `Bearer ${token}`
}
})
if (response.ok) return await response.json() as { accounts: Array<any> }
else console.error(await response.text())
},
async get_transactions(accountKey: string) {
const token = await auth.get_access_token()
if (!token) return undefined
const response = await fetch("https://api.sparebank1.no/personal/banking/transactions?" + new URLSearchParams({
"accountKey": accountKey
}), {
headers: {
Authorization: `Bearer ${token}`,
},
});
const json = await response.json()
console.log(accountKey + ":" + json["transactions"]?.length)
return json["transactions"] as Transaction[];
}
}
export default { auth, data }
|
