package onboarding

import (
	"net/http"
	"strings"
	"testing"
	"time"

	"github.com/google/uuid"
)

// Existing password/role tests use an explicitly preverified device fixture.
// End-to-end SMS issuance is exercised separately below.
func (f *loginFixture) trustDeviceForTest() {
	f.t.Helper()
	tx, err := f.s.pool.Begin(f.ctx)
	must(f.t, err)
	defer tx.Rollback(f.ctx)
	token, err := f.s.rememberLoginDevice(f.ctx, tx, domainMAC(f.s.crypt.hashKey, "PHONE1\n"+f.phone))
	must(f.t, err)
	must(f.t, tx.Commit(f.ctx))
	f.trusted = &http.Cookie{Name: f.s.trustedLoginCookieName(), Value: token}
}

func TestNewDeviceRequiresSMSForBothPortals(t *testing.T) {
	for _, operator := range []bool{false, true} {
		name := "customer"
		if operator {
			name = "operator"
		}
		t.Run(name, func(t *testing.T) {
			f := newLoginFixture(t)
			if operator {
				f.s = f.s.operatorView()
				f.newLoginSession()
				_, err := f.s.ProvisionOperatorPhone(f.ctx, f.operatorID, f.p.Issuer, f.p.Subject, f.phone, "abc123", uuid.NewString())
				must(t, err)
			} else {
				_, err := f.s.ProvisionCustomerPhone(f.ctx, f.web.UserID, f.user.Issuer, f.user.Subject, f.phone, "abc123", uuid.NewString())
				must(t, err)
			}
			login := func(password string) int {
				w, _ := f.request("POST", "/api/v1/web/login/password", PasswordLoginInput{Phone: f.phone, Password: password, CaptchaID: f.knownCaptcha(), CaptchaCode: "654321"}, f.cookie, f.csrf, "")
				if w.Code == 403 && !strings.Contains(w.Body.String(), "NEW_DEVICE_SMS_REQUIRED") {
					t.Fatal(w.Body.String())
				}
				if w.Code != 200 {
					for _, c := range w.Result().Cookies() {
						if c.Name == f.s.cookieName(true) {
							t.Fatal("account issued before device verification")
						}
					}
				}
				return w.Code
			}
			if got := login("wrong1"); got != 401 {
				t.Fatalf("wrong password: %d", got)
			}
			if got := login("abc123"); got != 403 {
				t.Fatalf("new device: %d", got)
			}
			var consumed bool
			must(t, f.s.pool.QueryRow(f.ctx, "SELECT consumed_at IS NOT NULL FROM "+f.s.loginSessionTable()+" WHERE token_hash=$1", digest([]byte(f.cookie.Value))).Scan(&consumed))
			if consumed {
				t.Fatal("step-up consumed login session")
			}
			id := f.send()
			w, _ := f.request("POST", "/api/v1/web/login/sms/verify", SMSVerifyInput{ChallengeID: id, Code: "wrong"}, f.cookie, f.csrf, "")
			if w.Code == 200 || f.trusted != nil {
				t.Fatal("failed SMS trusted device")
			}
			w, _ = f.request("POST", "/api/v1/web/login/sms/verify", SMSVerifyInput{ChallengeID: id, Code: f.sender.code}, f.cookie, f.csrf, "")
			if w.Code != 200 || f.trusted == nil {
				t.Fatal(w.Body.String())
			}
			if !f.trusted.HttpOnly || !f.trusted.Secure || f.trusted.MaxAge != 30*86400 || f.trusted.SameSite != http.SameSiteLaxMode {
				t.Fatal("unsafe trust cookie")
			}
			if strings.Contains(w.Body.String(), f.trusted.Value) {
				t.Fatal("browser trust token leaked in JSON")
			}
			trusted := f.trusted
			f.newLoginSession()
			if got := login("abc123"); got != 200 {
				t.Fatalf("verified device: %d", got)
			}
			f.newLoginSession()
			f.trusted = nil
			if got := login("abc123"); got != 403 {
				t.Fatalf("new browser: %d", got)
			}
			f.trusted = &http.Cookie{Name: trusted.Name, Value: randomToken(32)}
			if got := login("abc123"); got != 403 {
				t.Fatalf("forged token: %d", got)
			}
			f.trusted = trusted
			_, err := f.s.pool.Exec(f.ctx, `UPDATE trusted_login_device SET expires_at=$2 WHERE token_hash=$1`, digest([]byte(trusted.Value)), time.Now().Add(-time.Minute))
			must(t, err)
			if got := login("abc123"); got != 403 {
				t.Fatalf("expired trust: %d", got)
			}
		})
	}
}

func TestTrustedDeviceBoundToPhoneRealmAndPassword(t *testing.T) {
	f := newLoginFixture(t)
	account, csrf := f.smsAccount()
	w, _ := f.request("POST", "/api/v1/web/account/password", SetPasswordInput{Password: "abc123"}, account, csrf, "")
	if w.Code != 200 {
		t.Fatal(w.Body.String())
	}
	oldDevice := f.trusted
	f.trustDeviceForTest()
	secondDevice := f.trusted
	f.trusted = oldDevice
	w, _ = f.request("POST", "/api/v1/web/account/password", SetPasswordInput{Password: "abc456", CurrentPassword: "abc123"}, account, csrf, "")
	if w.Code != 200 {
		t.Fatal(w.Body.String())
	}
	phoneHash := domainMAC(f.s.crypt.hashKey, "PHONE1\n"+f.phone)
	var encoded string
	must(t, f.s.pool.QueryRow(f.ctx, `SELECT password_hash FROM customer_phone_credential WHERE phone_digest=$1`, phoneHash).Scan(&encoded))
	tx, err := f.s.pool.Begin(f.ctx)
	must(t, err)
	defer tx.Rollback(f.ctx)
	must(t, f.s.requireTrustedLoginDevice(f.ctx, tx, phoneHash, encoded, oldDevice.Value))
	for _, test := range []struct {
		phone, hash, token string
		operator           bool
	}{
		{phoneHash, encoded, secondDevice.Value, false},
		{phoneHash, encoded, oldDevice.Value, true},
		{strings.Repeat("0", 64), encoded, oldDevice.Value, false},
		{phoneHash, "administrative-reset", oldDevice.Value, false},
	} {
		view := *f.s
		view.operatorLogin = test.operator
		if view.requireTrustedLoginDevice(f.ctx, tx, test.phone, test.hash, test.token) == nil {
			t.Fatal("unrelated/revoked device accepted")
		}
	}
}

func TestMiniPasswordCannotBypassDeviceVerification(t *testing.T) {
	f := newLoginFixture(t)
	_, err := f.s.ProvisionCustomerPhone(f.ctx, f.web.UserID, f.user.Issuer, f.user.Subject, f.phone, "abc123", uuid.NewString())
	must(t, err)
	status, start := miniRequest(t, f.s, "POST", "/api/v1/mini/login/session", "", map[string]string{"portal": "customer"})
	if status != 200 {
		t.Fatal(status)
	}
	login := start["login_token"].(string)
	_, token, _ := miniCredential("MiniLogin "+login, "MiniLogin")
	hash := digest([]byte(token))
	status, _ = miniRequest(t, f.s, "POST", "/api/v1/mini/login/password", "MiniLogin "+login, PasswordLoginInput{Phone: f.phone, Password: "abc123", CaptchaID: f.knownCaptchaFor(hash), CaptchaCode: "654321"})
	if status != 403 {
		t.Fatal("native endpoint bypassed device verification", status)
	}
	status, challenge := miniRequest(t, f.s, "POST", "/api/v1/mini/login/sms/send", "MiniLogin "+login, SMSSendInput{Phone: f.phone, Purpose: "LOGIN", CaptchaID: f.knownCaptchaFor(hash), CaptchaCode: "654321"})
	if status != 200 {
		t.Fatal(status)
	}
	status, result := miniRequest(t, f.s, "POST", "/api/v1/mini/login/sms/verify", "MiniLogin "+login, SMSVerifyInput{ChallengeID: challenge["sms_challenge_id"].(string), Code: f.sender.code})
	if status != 200 || result["trusted_device_token"] == nil {
		t.Fatal("native SMS trust missing", status)
	}
}