package qr

import (
	"strings"
	"testing"

	"git.wxccs.org/iceking2nd/winauth-go/internal/config"
)

func TestEntryToOtpAuthGoogle(t *testing.T) {
	e := config.Entry{
		Name:      "MyGoogle",
		Vendor:    "google",
		SecretRaw: "0102030405\t6\tSHA1\t30",
	}
	oa, partial, err := EntryToOtpAuth(e)
	if err != nil {
		t.Fatalf("EntryToOtpAuth: %v", err)
	}
	if partial {
		t.Error("Google should not be partial")
	}
	if oa.Type != "totp" {
		t.Errorf("Type = %q, want totp", oa.Type)
	}
	if oa.Issuer != "Google" {
		t.Errorf("Issuer = %q, want Google", oa.Issuer)
	}
	if oa.Label != "Google:MyGoogle" {
		t.Errorf("Label = %q", oa.Label)
	}
	if oa.Digits != 6 {
		t.Errorf("Digits = %d, want 6", oa.Digits)
	}
	if oa.Algorithm != "SHA1" {
		t.Errorf("Algorithm = %q, want SHA1", oa.Algorithm)
	}
}

func TestEntryToOtpAuthHOTP(t *testing.T) {
	e := config.Entry{
		Name:      "Counter",
		Vendor:    "hotp",
		SecretRaw: "AABBCCDD\t6\tSHA1\t30|10",
	}
	oa, _, err := EntryToOtpAuth(e)
	if err != nil {
		t.Fatalf("EntryToOtpAuth: %v", err)
	}
	if oa.Type != "hotp" {
		t.Errorf("Type = %q, want hotp", oa.Type)
	}
	if oa.Counter != 10 {
		t.Errorf("Counter = %d, want 10", oa.Counter)
	}
}

func TestEntryToOtpAuthBattleNetPartial(t *testing.T) {
	e := config.Entry{
		Name:      "BNet",
		Vendor:    "battlenet",
		SecretRaw: "AABB\t8\tSHA1\t30|53455249414C",
	}
	oa, partial, err := EntryToOtpAuth(e)
	if err != nil {
		t.Fatalf("EntryToOtpAuth: %v", err)
	}
	if !partial {
		t.Error("Battle.Net should be partial")
	}
	if oa.Digits != 8 {
		t.Errorf("Digits = %d, want 8", oa.Digits)
	}
}

func TestEntryToOtpAuthSteamPartial(t *testing.T) {
	e := config.Entry{
		Name:      "Steam",
		Vendor:    "steam",
		SecretRaw: "CCDD\t5\tSHA1\t30|73657269616C|646576696365",
	}
	_, partial, err := EntryToOtpAuth(e)
	if err != nil {
		t.Fatalf("EntryToOtpAuth: %v", err)
	}
	if !partial {
		t.Error("Steam should be partial")
	}
}

func TestEntryToOtpAuthEmptySecret(t *testing.T) {
	e := config.Entry{Name: "Empty", Vendor: "google", SecretRaw: ""}
	if _, _, err := EntryToOtpAuth(e); err == nil {
		t.Error("expected error for empty secret")
	}
}

func TestURIRoundTrip(t *testing.T) {
	e := config.Entry{
		Name:      "Test",
		Vendor:    "google",
		SecretRaw: "0102030405\t6\tSHA1\t30",
	}
	oa, _, err := EntryToOtpAuth(e)
	if err != nil {
		t.Fatalf("EntryToOtpAuth: %v", err)
	}
	uri := oa.URI()

	// Parse it back
	parsed, err := ParseOtpAuth(uri)
	if err != nil {
		t.Fatalf("ParseOtpAuth(%q): %v", uri, err)
	}
	if parsed.Type != "totp" {
		t.Errorf("Type = %q, want totp", parsed.Type)
	}
	if parsed.SecretBase32 != oa.SecretBase32 {
		t.Errorf("Secret mismatch: %q vs %q", parsed.SecretBase32, oa.SecretBase32)
	}
}

func TestURIHOTP(t *testing.T) {
	oa := &OtpAuth{
		Type:         "hotp",
		Label:        "MyHOTP",
		SecretBase32: "JBSWY3DPEHPK3PXP",
		Issuer:       "Test",
		Digits:       6,
		Counter:      42,
	}
	uri := oa.URI()
	if !strings.Contains(uri, "counter=42") {
		t.Errorf("URI missing counter: %s", uri)
	}
	if !strings.HasPrefix(uri, "otpauth://hotp/") {
		t.Errorf("URI wrong prefix: %s", uri)
	}
}

func TestURIDefaultsOmitted(t *testing.T) {
	oa := &OtpAuth{
		Type:         "totp",
		SecretBase32: "AAAA",
		Algorithm:    "SHA1",
		Digits:       6,
		Period:       30,
	}
	uri := oa.URI()
	if strings.Contains(uri, "algorithm") {
		t.Errorf("SHA1 should be omitted: %s", uri)
	}
	if strings.Contains(uri, "digits") {
		t.Errorf("digits=6 should be omitted: %s", uri)
	}
	if strings.Contains(uri, "period") {
		t.Errorf("period=30 should be omitted: %s", uri)
	}
}