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import { SB1_FIN_INST, SB1_ID, SB1_REDIRECT_URI, SB1_SECRET } from "$env/static/private";
import { eq, sql } from "drizzle-orm";
import { Temporal } from "temporal-polyfill";
import { randomUUID } from "node:crypto";
import { db } from "./db";
import { SyncSessionTable, TransactionsTable } from "./db/schema";
import { add_session_log } from "./session-log";
import type { Sb1Account, Sb1Tokens, Sb1Transaction } from "$lib/shared";
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: SyncSessionTable.refreshTokenCreated,
accessTokenCreated: SyncSessionTable.accessTokenCreated,
tokens: SyncSessionTable.tokens
}).from(SyncSessionTable)
if (!entity[0]) return undefined
const { tokens, accessTokenCreated, refreshTokenCreated } = entity[0]
if (!tokens) return undefined
const refreshTokenExpires = Temporal.Instant.fromEpochMilliseconds(Number(refreshTokenCreated)).add({ seconds: tokens.refresh_token_expires_in })
const accessTokenExpires = Temporal.Instant.fromEpochMilliseconds(Number(accessTokenCreated)).add({ seconds: tokens.expires_in })
return {
refreshTokenExpires,
accessTokenExpires
}
},
async init_auth_session(): Promise<string> {
const state = randomUUID()
await db.insert(SyncSessionTable).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: SyncSessionTable.tokens,
refreshTokenCreated: SyncSessionTable.refreshTokenCreated,
accessTokenCreated: SyncSessionTable.accessTokenCreated
}).from(SyncSessionTable)
if (!result[0]) return undefined
const { tokens, accessTokenCreated, refreshTokenCreated } = result[0]
if (!tokens) return undefined
const nowInstant = Temporal.Now.instant()
const accessTokenExpiredInstant = Temporal.Instant.fromEpochMilliseconds(Number(accessTokenCreated)).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(Number(refreshTokenCreated)).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: SyncSessionTable.tokens,
id: SyncSessionTable.id
}).from(SyncSessionTable)
const { tokens: currentTokens, id } = entity[0]
if (!currentTokens) return null
if (!currentTokens.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", currentTokens.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 tokens = await res.json() as Sb1Tokens
const epoch = Temporal.Now.instant().epochMilliseconds
if (res.ok) {
await db.update(SyncSessionTable).set({ tokens, accessTokenCreated: epoch.toString(), refreshTokenCreated: epoch.toString() }).where(eq(SyncSessionTable.id, id))
await add_session_log(id, "REFRESH_SB1_TOKEN", "Done")
return tokens
} else {
console.error("Failed to refresh tokens", tokens)
await add_session_log(id, "REFRESH_SB1_TOKEN", "Failed: " + JSON.stringify(res))
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<Sb1Account> }
else console.error(await response.text())
},
async get_transactions(accountKey: string, delta?: Temporal.Instant) {
const token = await auth.get_access_token()
if (!token) return undefined
const params = new URLSearchParams({
"accountKey": accountKey,
});
if (delta) {
params.append("fromDate", formatInstant(delta, "yyyy-MM-dd"))
params.append("Transaction source", "ALL")
}
const response = await fetch("https://api.sparebank1.no/personal/banking/transactions?" + params, {
headers: {
Authorization: `Bearer ${token}`,
Accept: "application/vnd.sparebank1.v1+json;charset=utf-8"
},
});
const json = await response.json()
return json["transactions"] as Sb1Transaction[]
}
}
export default { auth, data, init }
let importInterval: NodeJS.Timeout
let inited = false
async function init() {
if (inited) return
if (importInterval) clearInterval(importInterval)
await importTransactions()
importInterval = setInterval(async () => importTransactions, 60 * 60 * 1000)
inited = true
}
async function importTransactions() {
console.log("Creating sb1 transactions indb")
const accounts = await data.get_accounts()
for (const account of accounts?.accounts ?? []) {
const transactions = await data.get_transactions(account.key)
for (const transaction of transactions ?? []) {
// if (await transactionExists(transaction.id)) continue
await db.insert(TransactionsTable).values({ transaction })
}
}
}
async function transactionExists(transactionId: string) {
const query = sql`select data ->>'id' as id from ${TransactionsTable} where id=${transactionId}`;
return (await db.execute(query)).rowCount ?? 0 > 0
}
function formatInstant(
instant: Temporal.Instant,
format: string,
timeZone: string = "UTC"
): string {
const zdt = instant.toZonedDateTimeISO(timeZone);
const pad = (value: number, length = 2) =>
value.toString().padStart(length, "0");
const replacements: Record<string, string> = {
yyyy: pad(zdt.year, 4),
MM: pad(zdt.month),
dd: pad(zdt.day),
HH: pad(zdt.hour),
mm: pad(zdt.minute),
ss: pad(zdt.second),
};
return format.replace(
/yyyy|MM|dd|HH|mm|ss/g,
(token) => replacements[token]
);
}
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