package qr

import "testing"

func TestParseOtpAuth_TOTP(t *testing.T) {
	uri := "otpauth://totp/Example:alice@example.com?" +
		"secret=JBSWY3DPEHPK3PXP&issuer=Example&algorithm=SHA1&digits=6&period=30"
	got, err := ParseOtpAuth(uri)
	if err != nil {
		t.Fatalf("ParseOtpAuth: %v", err)
	}
	if got.Type != "totp" {
		t.Errorf("Type = %q, want totp", got.Type)
	}
	if got.SecretBase32 != "JBSWY3DPEHPK3PXP" {
		t.Errorf("SecretBase32 = %q", got.SecretBase32)
	}
	if got.Issuer != "Example" {
		t.Errorf("Issuer = %q", got.Issuer)
	}
	if got.Label != "Example:alice@example.com" {
		t.Errorf("Label = %q", got.Label)
	}
	if got.Digits != 6 || got.Period != 30 {
		t.Errorf("Digits/Period = %d/%d", got.Digits, got.Period)
	}
}

func TestParseOtpAuth_HOTP(t *testing.T) {
	uri := "otpauth://hotp/Account?secret=AAAAAA&counter=42"
	got, err := ParseOtpAuth(uri)
	if err != nil {
		t.Fatalf("ParseOtpAuth: %v", err)
	}
	if got.Type != "hotp" || got.Counter != 42 {
		t.Errorf("got %+v", got)
	}
}

func TestParseOtpAuth_RejectsNonOtp(t *testing.T) {
	if _, err := ParseOtpAuth("https://example.com/?secret=x"); err != ErrNotOtpAuth {
		t.Errorf("want ErrNotOtpAuth, got %v", err)
	}
}

func TestParseOtpAuth_MissingSecret(t *testing.T) {
	if _, err := ParseOtpAuth("otpauth://totp/foo"); err == nil {
		t.Errorf("expected error for missing secret")
	}
}