1772408c39
I'm now pulling the authorization code off of Monzo's request to my redirect URI. I intend to use exchange that code for an access and refresh token. Once I have these two items, I should be able to interact with Monzo's API much more easily.
81 lines
1.9 KiB
Go
81 lines
1.9 KiB
Go
// Creating a job to import Monzo transactions into YNAB.
|
|
//
|
|
// This is going to run N times per 24 hours.
|
|
|
|
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"log"
|
|
"net/http"
|
|
"os"
|
|
"os/exec"
|
|
)
|
|
|
|
var (
|
|
clientId = os.Getenv("client_id")
|
|
clientSecret = os.Getenv("client_secret")
|
|
accessToken = nil
|
|
refreshToken = nil
|
|
)
|
|
|
|
const (
|
|
state = "xyz123"
|
|
redirectUri = "http://localhost:8080/authorize"
|
|
)
|
|
|
|
func getAccessCode(string authCode) {
|
|
form := map[string]string{
|
|
"grant_type": "authorization_code",
|
|
"client_id": client_id,
|
|
"client_secret": client_secret,
|
|
"redirect_uri": redirectUri,
|
|
"code": authCode,
|
|
}
|
|
json := map[string]string{
|
|
"access_token": "access_token",
|
|
"client_id": "client_id",
|
|
"expires_in": 21600,
|
|
"refresh_token": "refresh_token",
|
|
"token_type": "Bearer",
|
|
"user_id": "user_id",
|
|
}
|
|
|
|
// TODO: Handle retry with backoff logic here.
|
|
resp, error := http.Post("https://api.monzo.com/oauth2/token", form.Form(), json.Json())
|
|
if err != nil {
|
|
log.Fatal("Could not exchange authorization code for an access token.")
|
|
}
|
|
|
|
resp.Body()
|
|
}
|
|
|
|
func handleRedirect(w http.ResponseWriter, r *http.Request) {
|
|
// assert that `r.state` is the same as `state`.
|
|
params := r.URL.Query()
|
|
|
|
reqState := params["state"][0]
|
|
reqCode := params["code"][0]
|
|
|
|
if reqState != state {
|
|
log.Fatal(fmt.Sprintf("Value for state returned by Monzo does not equal our state. %s != %s", reqState, state))
|
|
}
|
|
|
|
go getAccessCode(reqCode)
|
|
|
|
fmt.Printf("Received the authorization code from Monzo: %s", reqCode)
|
|
fmt.Fprintf(w, fmt.Sprintf("Authorization code: %s", reqCode))
|
|
}
|
|
|
|
func authorizeClient() {
|
|
url :=
|
|
fmt.Sprintf("https://auth.monzo.com/?client_id=%s&redirect_uri=%s&response_type=code&state=%s",
|
|
clientId, redirectUri, state)
|
|
exec.Command("google-chrome", url).Start()
|
|
}
|
|
|
|
func main() {
|
|
authorizeClient()
|
|
http.HandleFunc("/authorize", handleRedirect)
|
|
go log.Fatal(http.ListenAndServe(":8080", nil))
|
|
}
|