[MM-44489] Cloud limits: enforcing files (#20703)

* Update last accessible file time

* Filter fileInfos

* Set inaccessible header

* Fix lint issue

* Fix lint issue

* Fix i18n

* add nil check

* Fix merge conflicts

* Add helper functions to clear out inaccessible files content

* Remove content for inaccessible files

* Fix typo

* wip

* Remove InaccessibleContent field, instead use Archived

* Add store tests

* Add tests

* Add separate funcs to ignore cloud limits

* Use separate query for MySql

* Use GetReplicaX

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

api4/file.go

@@ -482,6 +482,7 @@ func getFile(c *Context, w http.ResponseWriter, r *http.Request) {
 	info, err := c.App.GetFileInfo(c.Params.FileId)
 	if err != nil {
 		c.Err = err
+		setInaccessibleFileHeader(w, err)
 		return
 	}
 	auditRec.AddMeta("file", info)
@@ -514,6 +515,7 @@ func getFileThumbnail(c *Context, w http.ResponseWriter, r *http.Request) {
 	info, err := c.App.GetFileInfo(c.Params.FileId)
 	if err != nil {
 		c.Err = err
+		setInaccessibleFileHeader(w, err)
 		return
 	}
 
@@ -555,6 +557,7 @@ func getFileLink(c *Context, w http.ResponseWriter, r *http.Request) {
 	info, err := c.App.GetFileInfo(c.Params.FileId)
 	if err != nil {
 		c.Err = err
+		setInaccessibleFileHeader(w, err)
 		return
 	}
 	auditRec.AddMeta("file", info)
@@ -589,6 +592,7 @@ func getFilePreview(c *Context, w http.ResponseWriter, r *http.Request) {
 	info, err := c.App.GetFileInfo(c.Params.FileId)
 	if err != nil {
 		c.Err = err
+		setInaccessibleFileHeader(w, err)
 		return
 	}
 
@@ -622,6 +626,7 @@ func getFileInfo(c *Context, w http.ResponseWriter, r *http.Request) {
 	info, err := c.App.GetFileInfo(c.Params.FileId)
 	if err != nil {
 		c.Err = err
+		setInaccessibleFileHeader(w, err)
 		return
 	}
 
@@ -650,6 +655,7 @@ func getPublicFile(c *Context, w http.ResponseWriter, r *http.Request) {
 	info, err := c.App.GetFileInfo(c.Params.FileId)
 	if err != nil {
 		c.Err = err
+		setInaccessibleFileHeader(w, err)
 		return
 	}
 
@@ -824,3 +830,10 @@ func searchFiles(c *Context, w http.ResponseWriter, r *http.Request, teamID stri
 		c.Logger.Warn("Error while writing response", mlog.Err(err))
 	}
 }
+
+func setInaccessibleFileHeader(w http.ResponseWriter, appErr *model.AppError) {
+	// File is inaccessible due to cloud plan's limit.
+	if appErr.Id == "app.file.cloud.get.app_error" {
+		w.Header().Set(model.HeaderFirstInaccessibleFileTime, "1")
+	}
+}