MM-45317: global drafts endpoints and ws events (#20614)

* MM-23881: global drafts endpoints and ws events

Adds endpoints:
- create/update drafts
- delete draft
- get drafts

Adds WS events:
- draft_updated
- draft_created
- draft_deleted

* Ordering and WS event name fixes

* Adds PostID to the drafts table

In the future the drafts will include edited posts, this commit adds the
post id in the combined pkey of the table.

* Fixes route for deleting a thread draft

* Fixes failed checks

* Fixes migrations

* Fixes migration

* Extract translation strings

* Removes PostID since we won't sync editing posts

* Fixes tests

* Fixes i18n

* Update migrations for global drafts

* update branch with latest master changes

* Add feature flag for global drafts

* Set global drafts feature flag default to true

* Added support for files in drafts

* Fix failing i18n check

* Added support for deleting files in drafts

* Revert "Added support for deleting files in drafts"

This reverts commit 45dfd04a760359de2e8814d652c9ef46daf994f6.

* Triggering new test server

* Add config setting 'AllowSyncedDrafts' for syncing drafts with server

* Triggering new test server

* Triggering new test server

* Add guard for config setting and add initial tests

* Fix i18n and lint errors

* Triggering new test server

* Add tests for drafts

* fix lint issues

* Add tests for model/draft

* Triggering new test server

* Triggering new test server

* Trigger new test server

* Address PR comments

* Change left join to regular join in GetDraftsForUser

* Fix broken test

Maybe consider adding an inclDeleted field if we want to get deleted drafts in the future

* fix translations

* Add store tests for drafts

* fix test naming

* remove comment

* update migrations

* set feature flag default to false

* update migrations

Co-authored-by: Mylon Suren <mylonsuren@gmail.com>
Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

model/client4.go

@@ -42,6 +42,7 @@ const (
 	StatusFail                      = "FAIL"
 	StatusUnhealthy                 = "UNHEALTHY"
 	StatusRemove                    = "REMOVE"
+	ConnectionId                    = "Connection-Id"
 
 	ClientDir = "client"
 
@@ -433,6 +434,10 @@ func (c *Client4) commandMoveRoute(commandId string) string {
 	return fmt.Sprintf(c.commandsRoute()+"/%v/move", commandId)
 }
 
+func (c *Client4) draftsRoute() string {
+	return "/drafts"
+}
+
 func (c *Client4) emojisRoute() string {
 	return "/emoji"
 }
@@ -6229,6 +6234,59 @@ func (c *Client4) GetChannelPoliciesForUser(userID string, offset, limit int) (*
 	return &channels, BuildResponse(r), nil
 }
 
+// Drafts Sections
+
+// UpsertDraft will create a new draft or update a draft if it already exists
+func (c *Client4) UpsertDraft(draft *Draft) (*Draft, *Response, error) {
+	buf, err := json.Marshal(draft)
+	if err != nil {
+		return nil, nil, NewAppError("UpsertDraft", "api.marshal_error", nil, "", http.StatusInternalServerError).Wrap(err)
+	}
+
+	r, err := c.DoAPIPostBytes(c.draftsRoute(), buf)
+	if err != nil {
+		return nil, BuildResponse(r), err
+	}
+	defer closeBody(r)
+
+	var df Draft
+	err = json.NewDecoder(r.Body).Decode(&df)
+	if err != nil {
+		return nil, nil, NewAppError("UpsertDraft", "api.unmarshal_error", nil, "", http.StatusInternalServerError).Wrap(err)
+	}
+	return &df, BuildResponse(r), err
+}
+
+// GetDrafts will get all drafts for a user
+func (c *Client4) GetDrafts(userId, teamId string) ([]*Draft, *Response, error) {
+	r, err := c.DoAPIGet(c.userRoute(userId)+c.teamRoute(teamId)+"/drafts", "")
+	if err != nil {
+		return nil, BuildResponse(r), err
+	}
+	defer closeBody(r)
+	var drafts []*Draft
+	err = json.NewDecoder(r.Body).Decode(&drafts)
+	if err != nil {
+		return nil, nil, NewAppError("GetDrafts", "api.unmarshal_error", nil, "", http.StatusInternalServerError).Wrap(err)
+	}
+	return drafts, BuildResponse(r), nil
+}
+
+func (c *Client4) DeleteDraft(userId, channelId, rootId string) (*Draft, *Response, error) {
+	r, err := c.DoAPIDelete(c.userRoute(userId) + c.channelRoute(channelId) + "/drafts")
+	if err != nil {
+		return nil, BuildResponse(r), err
+	}
+	defer closeBody(r)
+
+	var df *Draft
+	err = json.NewDecoder(r.Body).Decode(&df)
+	if err != nil {
+		return nil, BuildResponse(r), NewAppError("DeleteDraft", "api.marshal_error", nil, "", http.StatusInternalServerError).Wrap(err)
+	}
+	return df, BuildResponse(r), nil
+}
+
 // Commands Section
 
 // CreateCommand will create a new command if the user have the right permissions.