Further support Monzo OAuth2.0 login flow
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.
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1 changed files with 43 additions and 3 deletions
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@ -15,6 +15,8 @@ import (
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var (
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clientId = os.Getenv("client_id")
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clientSecret = os.Getenv("client_secret")
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accessToken = nil
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refreshToken = nil
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)
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const (
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@ -22,14 +24,52 @@ const (
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redirectUri = "http://localhost:8080/authorize"
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)
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func getAccessCode(string authCode) {
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form := map[string]string{
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"grant_type": "authorization_code",
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"client_id": client_id,
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"client_secret": client_secret,
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"redirect_uri": redirectUri,
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"code": authCode,
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}
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json := map[string]string{
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"access_token": "access_token",
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"client_id": "client_id",
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"expires_in": 21600,
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"refresh_token": "refresh_token",
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"token_type": "Bearer",
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"user_id": "user_id",
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}
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// TODO: Handle retry with backoff logic here.
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resp, error := http.Post("https://api.monzo.com/oauth2/token", form.Form(), json.Json())
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if err != nil {
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log.Fatal("Could not exchange authorization code for an access token.")
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}
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resp.Body()
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}
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func handleRedirect(w http.ResponseWriter, r *http.Request) {
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fmt.Println(r)
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fmt.Fprintf(w, "Ackified")
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// assert that `r.state` is the same as `state`.
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params := r.URL.Query()
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reqState := params["state"][0]
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reqCode := params["code"][0]
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if reqState != state {
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log.Fatal(fmt.Sprintf("Value for state returned by Monzo does not equal our state. %s != %s", reqState, state))
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}
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go getAccessCode(reqCode)
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fmt.Printf("Received the authorization code from Monzo: %s", reqCode)
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fmt.Fprintf(w, fmt.Sprintf("Authorization code: %s", reqCode))
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}
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func authorizeClient() {
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url :=
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fmt.Sprintf("https://auth.monzo.com/?client_id=%s&redirect_uri=%s&response_type=code&state=:state",
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fmt.Sprintf("https://auth.monzo.com/?client_id=%s&redirect_uri=%s&response_type=code&state=%s",
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clientId, redirectUri, state)
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exec.Command("google-chrome", url).Start()
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}
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