Move internal packages to an internal folder

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

internal/ui/settings_show.go

@@ -0,0 +1,67 @@
+// SPDX-FileCopyrightText: Copyright The Miniflux Authors. All rights reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+package ui // import "miniflux.app/v2/internal/ui"
+
+import (
+	"net/http"
+
+	"miniflux.app/v2/internal/http/request"
+	"miniflux.app/v2/internal/http/response/html"
+	"miniflux.app/v2/internal/locale"
+	"miniflux.app/v2/internal/model"
+	"miniflux.app/v2/internal/ui/form"
+	"miniflux.app/v2/internal/ui/session"
+	"miniflux.app/v2/internal/ui/view"
+)
+
+func (h *handler) showSettingsPage(w http.ResponseWriter, r *http.Request) {
+	sess := session.New(h.store, request.SessionID(r))
+	view := view.New(h.tpl, r, sess)
+
+	user, err := h.store.UserByID(request.UserID(r))
+	if err != nil {
+		html.ServerError(w, r, err)
+		return
+	}
+
+	settingsForm := form.SettingsForm{
+		Username:               user.Username,
+		Theme:                  user.Theme,
+		Language:               user.Language,
+		Timezone:               user.Timezone,
+		EntryDirection:         user.EntryDirection,
+		EntryOrder:             user.EntryOrder,
+		EntriesPerPage:         user.EntriesPerPage,
+		KeyboardShortcuts:      user.KeyboardShortcuts,
+		ShowReadingTime:        user.ShowReadingTime,
+		CustomCSS:              user.Stylesheet,
+		EntrySwipe:             user.EntrySwipe,
+		GestureNav:             user.GestureNav,
+		DisplayMode:            user.DisplayMode,
+		DefaultReadingSpeed:    user.DefaultReadingSpeed,
+		CJKReadingSpeed:        user.CJKReadingSpeed,
+		DefaultHomePage:        user.DefaultHomePage,
+		CategoriesSortingOrder: user.CategoriesSortingOrder,
+		MarkReadOnView:         user.MarkReadOnView,
+	}
+
+	timezones, err := h.store.Timezones()
+	if err != nil {
+		html.ServerError(w, r, err)
+		return
+	}
+
+	view.Set("form", settingsForm)
+	view.Set("themes", model.Themes())
+	view.Set("languages", locale.AvailableLanguages())
+	view.Set("timezones", timezones)
+	view.Set("menu", "settings")
+	view.Set("user", user)
+	view.Set("countUnread", h.store.CountUnreadEntries(user.ID))
+	view.Set("countErrorFeeds", h.store.CountUserFeedsWithErrors(user.ID))
+	view.Set("default_home_pages", model.HomePages())
+	view.Set("categories_sorting_options", model.CategoriesSortingOptions())
+
+	html.OK(w, r, view.Render("settings"))
+}