Move internal packages to an internal folder

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

internal/ui/share.go

@@ -0,0 +1,66 @@
+// 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"
+	"time"
+
+	"miniflux.app/v2/internal/http/request"
+	"miniflux.app/v2/internal/http/response"
+	"miniflux.app/v2/internal/http/response/html"
+	"miniflux.app/v2/internal/http/route"
+	"miniflux.app/v2/internal/storage"
+	"miniflux.app/v2/internal/ui/session"
+	"miniflux.app/v2/internal/ui/view"
+)
+
+func (h *handler) createSharedEntry(w http.ResponseWriter, r *http.Request) {
+	entryID := request.RouteInt64Param(r, "entryID")
+	shareCode, err := h.store.EntryShareCode(request.UserID(r), entryID)
+	if err != nil {
+		html.ServerError(w, r, err)
+		return
+	}
+
+	html.Redirect(w, r, route.Path(h.router, "sharedEntry", "shareCode", shareCode))
+}
+
+func (h *handler) unshareEntry(w http.ResponseWriter, r *http.Request) {
+	entryID := request.RouteInt64Param(r, "entryID")
+	if err := h.store.UnshareEntry(request.UserID(r), entryID); err != nil {
+		html.ServerError(w, r, err)
+		return
+	}
+
+	html.Redirect(w, r, route.Path(h.router, "sharedEntries"))
+}
+
+func (h *handler) sharedEntry(w http.ResponseWriter, r *http.Request) {
+	shareCode := request.RouteStringParam(r, "shareCode")
+	if shareCode == "" {
+		html.NotFound(w, r)
+		return
+	}
+
+	etag := shareCode
+	response.New(w, r).WithCaching(etag, 72*time.Hour, func(b *response.Builder) {
+		builder := storage.NewAnonymousQueryBuilder(h.store)
+		builder.WithShareCode(shareCode)
+
+		entry, err := builder.GetEntry()
+		if err != nil || entry == nil {
+			html.NotFound(w, r)
+			return
+		}
+
+		sess := session.New(h.store, request.SessionID(r))
+		view := view.New(h.tpl, r, sess)
+		view.Set("entry", entry)
+
+		b.WithHeader("Content-Type", "text/html; charset=utf-8")
+		b.WithBody(view.Render("entry"))
+		b.Write()
+	})
+}