Mono repo -> Master (#22553)

Combines the following repositories into one:

https://github.com/mattermost/mattermost-server
https://github.com/mattermost/mattermost-webapp
https://github.com/mattermost/focalboard
https://github.com/mattermost/mattermost-plugin-playbooks

server/channels/app/slashcommands/command_expand_collapse.go

@@ -0,0 +1,95 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+package slashcommands
+
+import (
+	"encoding/json"
+	"strconv"
+
+	"github.com/mattermost/mattermost-server/v6/model"
+	"github.com/mattermost/mattermost-server/v6/server/channels/app"
+	"github.com/mattermost/mattermost-server/v6/server/channels/app/request"
+	"github.com/mattermost/mattermost-server/v6/server/platform/shared/i18n"
+)
+
+type ExpandProvider struct {
+}
+
+type CollapseProvider struct {
+}
+
+const (
+	CmdExpand   = "expand"
+	CmdCollapse = "collapse"
+)
+
+func init() {
+	app.RegisterCommandProvider(&ExpandProvider{})
+	app.RegisterCommandProvider(&CollapseProvider{})
+}
+
+func (*ExpandProvider) GetTrigger() string {
+	return CmdExpand
+}
+
+func (*CollapseProvider) GetTrigger() string {
+	return CmdCollapse
+}
+
+func (*ExpandProvider) GetCommand(a *app.App, T i18n.TranslateFunc) *model.Command {
+	return &model.Command{
+		Trigger:          CmdExpand,
+		AutoComplete:     true,
+		AutoCompleteDesc: T("api.command_expand.desc"),
+		DisplayName:      T("api.command_expand.name"),
+	}
+}
+
+func (*CollapseProvider) GetCommand(a *app.App, T i18n.TranslateFunc) *model.Command {
+	return &model.Command{
+		Trigger:          CmdCollapse,
+		AutoComplete:     true,
+		AutoCompleteDesc: T("api.command_collapse.desc"),
+		DisplayName:      T("api.command_collapse.name"),
+	}
+}
+
+func (*ExpandProvider) DoCommand(a *app.App, c request.CTX, args *model.CommandArgs, message string) *model.CommandResponse {
+	return setCollapsePreference(a, args, false)
+}
+
+func (*CollapseProvider) DoCommand(a *app.App, c request.CTX, args *model.CommandArgs, message string) *model.CommandResponse {
+	return setCollapsePreference(a, args, true)
+}
+
+func setCollapsePreference(a *app.App, args *model.CommandArgs, isCollapse bool) *model.CommandResponse {
+	pref := model.Preference{
+		UserId:   args.UserId,
+		Category: model.PreferenceCategoryDisplaySettings,
+		Name:     model.PreferenceNameCollapseSetting,
+		Value:    strconv.FormatBool(isCollapse),
+	}
+
+	if err := a.Srv().Store().Preference().Save(model.Preferences{pref}); err != nil {
+		return &model.CommandResponse{Text: args.T("api.command_expand_collapse.fail.app_error") + err.Error(), ResponseType: model.CommandResponseTypeEphemeral}
+	}
+
+	socketMessage := model.NewWebSocketEvent(model.WebsocketEventPreferenceChanged, "", "", args.UserId, nil, "")
+
+	prefJSON, err := json.Marshal(pref)
+	if err != nil {
+		return &model.CommandResponse{Text: args.T("api.marshal_error") + err.Error(), ResponseType: model.CommandResponseTypeEphemeral}
+	}
+	socketMessage.Add("preference", string(prefJSON))
+	a.Publish(socketMessage)
+
+	var rmsg string
+
+	if isCollapse {
+		rmsg = args.T("api.command_collapse.success")
+	} else {
+		rmsg = args.T("api.command_expand.success")
+	}
+	return &model.CommandResponse{ResponseType: model.CommandResponseTypeEphemeral, Text: rmsg}
+}