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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					var (
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	clientId     = os.Getenv("client_id")
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						clientId     = os.Getenv("client_id")
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	clientSecret = os.Getenv("client_secret")
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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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					)
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const (
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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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						redirectUri = "http://localhost:8080/authorize"
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)
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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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					func handleRedirect(w http.ResponseWriter, r *http.Request) {
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	fmt.Println(r)
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						// assert that `r.state` is the same as `state`.
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	fmt.Fprintf(w, "Ackified")
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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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					}
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func authorizeClient() {
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					func authorizeClient() {
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	url :=
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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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								clientId, redirectUri, state)
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	exec.Command("google-chrome", url).Start()
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						exec.Command("google-chrome", url).Start()
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}
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					}
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