MM-11781: Basic Data Export Command Line. (#9296)

* MM-11781: Basic Data Export Command Line.

* ChannelStore new unit tests.

* TeamStore new unit tests.

* Unit test for new UserStore function.

* Unit tests for post store new methods.

* Review fixes.

* Fix duplicate command name.

app/export_converters.go

@@ -0,0 +1,113 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package app
+
+import (
+	"github.com/mattermost/mattermost-server/model"
+	"strings"
+)
+
+func ImportLineFromTeam(team *model.TeamForExport) *LineImportData {
+	return &LineImportData{
+		Type: "team",
+		Team: &TeamImportData{
+			Name:            &team.Name,
+			DisplayName:     &team.DisplayName,
+			Type:            &team.Type,
+			Description:     &team.Description,
+			AllowOpenInvite: &team.AllowOpenInvite,
+			Scheme:          team.SchemeName,
+		},
+	}
+}
+
+func ImportLineFromChannel(channel *model.ChannelForExport) *LineImportData {
+	return &LineImportData{
+		Type: "channel",
+		Channel: &ChannelImportData{
+			Team:        &channel.TeamName,
+			Name:        &channel.Name,
+			DisplayName: &channel.DisplayName,
+			Type:        &channel.Type,
+			Header:      &channel.Header,
+			Purpose:     &channel.Purpose,
+			Scheme:      channel.SchemeName,
+		},
+	}
+}
+
+func ImportLineFromUser(user *model.User) *LineImportData {
+	// Bulk Importer doesn't accept "empty string" for AuthService.
+	var authService *string
+	if user.AuthService != "" {
+		authService = &user.AuthService
+	}
+
+	return &LineImportData{
+		Type: "user",
+		User: &UserImportData{
+			Username:    &user.Username,
+			Email:       &user.Email,
+			AuthService: authService,
+			AuthData:    user.AuthData,
+			Nickname:    &user.Nickname,
+			FirstName:   &user.FirstName,
+			LastName:    &user.LastName,
+			Position:    &user.Position,
+			Roles:       &user.Roles,
+			Locale:      &user.Locale,
+		},
+	}
+}
+
+func ImportUserTeamDataFromTeamMember(member *model.TeamMemberForExport) *UserTeamImportData {
+	rolesList := strings.Fields(member.Roles)
+	if member.SchemeAdmin {
+		rolesList = append(rolesList, model.TEAM_ADMIN_ROLE_ID)
+	}
+	if member.SchemeUser {
+		rolesList = append(rolesList, model.TEAM_USER_ROLE_ID)
+	}
+	roles := strings.Join(rolesList, " ")
+	return &UserTeamImportData{
+		Name:  &member.TeamName,
+		Roles: &roles,
+	}
+}
+
+func ImportUserChannelDataFromChannelMember(member *model.ChannelMemberForExport) *UserChannelImportData {
+	rolesList := strings.Fields(member.Roles)
+	if member.SchemeAdmin {
+		rolesList = append(rolesList, model.CHANNEL_ADMIN_ROLE_ID)
+	}
+	if member.SchemeUser {
+		rolesList = append(rolesList, model.CHANNEL_USER_ROLE_ID)
+	}
+	roles := strings.Join(rolesList, " ")
+	return &UserChannelImportData{
+		Name:  &member.ChannelName,
+		Roles: &roles,
+	}
+}
+
+func ImportLineForPost(post *model.PostForExport) *LineImportData {
+	return &LineImportData{
+		Type: "post",
+		Post: &PostImportData{
+			Team:     &post.TeamName,
+			Channel:  &post.ChannelName,
+			User:     &post.Username,
+			Message:  &post.Message,
+			CreateAt: &post.CreateAt,
+		},
+	}
+}
+
+func ImportReplyFromPost(post *model.ReplyForExport) *ReplyImportData {
+	return &ReplyImportData{
+		User:     &post.Username,
+		Message:  &post.Message,
+		CreateAt: &post.CreateAt,
+	}
+}