[feature] add authorization to the already-existing authentication (#365)

* add ensureUserIsAuthorizedOrRedirect to /oauth/authorize

* adding authorization (email confirm, account approve, etc) to TokenCheck

* revert un-needed changes to signin.go

* oops what happened here

* error css

* add account.SuspendedAt check

* remove redundant checks from oauth util Authed function

* wip tests

* tests passing

* stop stripping useful information from ErrAlreadyExists

* that feeling of scraping the dryer LINT off the screen

* oops I didn't mean to get rid of this NewTestRouter function

* make tests work with recorder

* re-add ConfigureTemplatesWithGin to handle template path err

Co-authored-by: tsmethurst <tobi.smethurst@protonmail.com>

internal/api/client/auth/authorize_test.go

@@ -0,0 +1,113 @@
+package auth_test
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"testing"
+	"time"
+
+	"codeberg.org/gruf/go-errors"
+	"github.com/gin-contrib/sessions"
+	"github.com/stretchr/testify/suite"
+	"github.com/superseriousbusiness/gotosocial/internal/api/client/auth"
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+)
+
+type AuthAuthorizeTestSuite struct {
+	AuthStandardTestSuite
+}
+
+type authorizeHandlerTestCase struct {
+	description            string
+	mutateUserAccount      func(*gtsmodel.User, *gtsmodel.Account)
+	expectedStatusCode     int
+	expectedLocationHeader string
+}
+
+func (suite *AuthAuthorizeTestSuite) TestAccountAuthorizeHandler() {
+
+	var tests = []authorizeHandlerTestCase{
+		{
+			description: "user has their email unconfirmed",
+			mutateUserAccount: func(user *gtsmodel.User, account *gtsmodel.Account) {
+				// nothing to do, weed_lord420 already has their email unconfirmed
+			},
+			expectedStatusCode:     http.StatusSeeOther,
+			expectedLocationHeader: auth.CheckYourEmailPath,
+		},
+		{
+			description: "user has their email confirmed but is not approved",
+			mutateUserAccount: func(user *gtsmodel.User, account *gtsmodel.Account) {
+				user.ConfirmedAt = time.Now()
+				user.Email = user.UnconfirmedEmail
+			},
+			expectedStatusCode:     http.StatusSeeOther,
+			expectedLocationHeader: auth.WaitForApprovalPath,
+		},
+		{
+			description: "user has their email confirmed and is approved, but User entity has been disabled",
+			mutateUserAccount: func(user *gtsmodel.User, account *gtsmodel.Account) {
+				user.ConfirmedAt = time.Now()
+				user.Email = user.UnconfirmedEmail
+				user.Approved = true
+				user.Disabled = true
+			},
+			expectedStatusCode:     http.StatusSeeOther,
+			expectedLocationHeader: auth.AccountDisabledPath,
+		},
+		{
+			description: "user has their email confirmed and is approved, but Account entity has been suspended",
+			mutateUserAccount: func(user *gtsmodel.User, account *gtsmodel.Account) {
+				user.ConfirmedAt = time.Now()
+				user.Email = user.UnconfirmedEmail
+				user.Approved = true
+				user.Disabled = false
+				account.SuspendedAt = time.Now()
+			},
+			expectedStatusCode:     http.StatusSeeOther,
+			expectedLocationHeader: auth.AccountDisabledPath,
+		},
+	}
+
+	doTest := func(testCase authorizeHandlerTestCase) {
+		ctx, recorder := suite.newContext(http.MethodGet, auth.OauthAuthorizePath)
+
+		user := suite.testUsers["unconfirmed_account"]
+		account := suite.testAccounts["unconfirmed_account"]
+
+		testSession := sessions.Default(ctx)
+		testSession.Set(sessionUserID, user.ID)
+		testSession.Set(sessionClientID, suite.testApplications["application_1"].ClientID)
+		if err := testSession.Save(); err != nil {
+			panic(errors.WrapMsgf(err, "failed on case: %s", testCase.description))
+		}
+
+		testCase.mutateUserAccount(user, account)
+
+		testCase.description = fmt.Sprintf("%s, %t, %s", user.Email, user.Disabled, account.SuspendedAt)
+
+		user.UpdatedAt = time.Now()
+		err := suite.db.UpdateByPrimaryKey(context.Background(), user)
+		suite.NoError(err)
+		_, err = suite.db.UpdateAccount(context.Background(), account)
+		suite.NoError(err)
+
+		// call the handler
+		suite.authModule.AuthorizeGETHandler(ctx)
+
+		// 1. we should have a redirect
+		suite.Equal(testCase.expectedStatusCode, recorder.Code, fmt.Sprintf("failed on case: %s", testCase.description))
+
+		// 2. we should have a redirect to the check your email path, as this user has not confirmed their email yet.
+		suite.Equal(testCase.expectedLocationHeader, recorder.Header().Get("Location"), fmt.Sprintf("failed on case: %s", testCase.description))
+	}
+
+	for _, testCase := range tests {
+		doTest(testCase)
+	}
+}
+
+func TestAccountUpdateTestSuite(t *testing.T) {
+	suite.Run(t, new(AuthAuthorizeTestSuite))
+}