Move internal packages to an internal folder

For reference: https://go.dev/doc/go1.4#internalpackages

ui/oauth2_callback.go

@@ -1,135 +0,0 @@
-// SPDX-FileCopyrightText: Copyright The Miniflux Authors. All rights reserved.
-// SPDX-License-Identifier: Apache-2.0
-
-package ui // import "miniflux.app/v2/ui"
-
-import (
-	"errors"
-	"net/http"
-
-	"miniflux.app/v2/config"
-	"miniflux.app/v2/http/cookie"
-	"miniflux.app/v2/http/request"
-	"miniflux.app/v2/http/response/html"
-	"miniflux.app/v2/http/route"
-	"miniflux.app/v2/locale"
-	"miniflux.app/v2/logger"
-	"miniflux.app/v2/model"
-	"miniflux.app/v2/ui/session"
-)
-
-func (h *handler) oauth2Callback(w http.ResponseWriter, r *http.Request) {
-	clientIP := request.ClientIP(r)
-	printer := locale.NewPrinter(request.UserLanguage(r))
-	sess := session.New(h.store, request.SessionID(r))
-
-	provider := request.RouteStringParam(r, "provider")
-	if provider == "" {
-		logger.Error("[OAuth2] Invalid or missing provider")
-		html.Redirect(w, r, route.Path(h.router, "login"))
-		return
-	}
-
-	code := request.QueryStringParam(r, "code", "")
-	if code == "" {
-		logger.Error("[OAuth2] No code received on callback")
-		html.Redirect(w, r, route.Path(h.router, "login"))
-		return
-	}
-
-	state := request.QueryStringParam(r, "state", "")
-	if state == "" || state != request.OAuth2State(r) {
-		logger.Error(`[OAuth2] Invalid state value: got "%s" instead of "%s"`, state, request.OAuth2State(r))
-		html.Redirect(w, r, route.Path(h.router, "login"))
-		return
-	}
-
-	authProvider, err := getOAuth2Manager(r.Context()).FindProvider(provider)
-	if err != nil {
-		logger.Error("[OAuth2] %v", err)
-		html.Redirect(w, r, route.Path(h.router, "login"))
-		return
-	}
-
-	profile, err := authProvider.GetProfile(r.Context(), code)
-	if err != nil {
-		logger.Error("[OAuth2] %v", err)
-		html.Redirect(w, r, route.Path(h.router, "login"))
-		return
-	}
-
-	logger.Info("[OAuth2] [ClientIP=%s] Successful auth for %s", clientIP, profile)
-
-	if request.IsAuthenticated(r) {
-		loggedUser, err := h.store.UserByID(request.UserID(r))
-		if err != nil {
-			html.ServerError(w, r, err)
-			return
-		}
-
-		if h.store.AnotherUserWithFieldExists(loggedUser.ID, profile.Key, profile.ID) {
-			logger.Error("[OAuth2] User #%d cannot be associated because it is already associated with another user", loggedUser.ID)
-			sess.NewFlashErrorMessage(printer.Printf("error.duplicate_linked_account"))
-			html.Redirect(w, r, route.Path(h.router, "settings"))
-			return
-		}
-
-		authProvider.PopulateUserWithProfileID(loggedUser, profile)
-		if err := h.store.UpdateUser(loggedUser); err != nil {
-			html.ServerError(w, r, err)
-			return
-		}
-
-		sess.NewFlashMessage(printer.Printf("alert.account_linked"))
-		html.Redirect(w, r, route.Path(h.router, "settings"))
-		return
-	}
-
-	user, err := h.store.UserByField(profile.Key, profile.ID)
-	if err != nil {
-		html.ServerError(w, r, err)
-		return
-	}
-
-	if user == nil {
-		if !config.Opts.IsOAuth2UserCreationAllowed() {
-			html.Forbidden(w, r)
-			return
-		}
-
-		if h.store.UserExists(profile.Username) {
-			html.BadRequest(w, r, errors.New(printer.Printf("error.user_already_exists")))
-			return
-		}
-
-		userCreationRequest := &model.UserCreationRequest{Username: profile.Username}
-		authProvider.PopulateUserCreationWithProfileID(userCreationRequest, profile)
-
-		user, err = h.store.CreateUser(userCreationRequest)
-		if err != nil {
-			html.ServerError(w, r, err)
-			return
-		}
-	}
-
-	sessionToken, _, err := h.store.CreateUserSessionFromUsername(user.Username, r.UserAgent(), clientIP)
-	if err != nil {
-		html.ServerError(w, r, err)
-		return
-	}
-
-	logger.Info("[OAuth2] [ClientIP=%s] username=%s (%s) just logged in", clientIP, user.Username, profile)
-
-	h.store.SetLastLogin(user.ID)
-	sess.SetLanguage(user.Language)
-	sess.SetTheme(user.Theme)
-
-	http.SetCookie(w, cookie.New(
-		cookie.CookieUserSessionID,
-		sessionToken,
-		config.Opts.HTTPS,
-		config.Opts.BasePath(),
-	))
-
-	html.Redirect(w, r, route.Path(h.router, "unread"))
-}