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channel_category.go
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channel_category.go
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// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.
package app
import (
"errors"
"net/http"
"time"
"github.com/mattermost/mattermost-server/v5/mlog"
"github.com/mattermost/mattermost-server/v5/model"
"github.com/mattermost/mattermost-server/v5/store"
)
func (a *App) createInitialSidebarCategories(userID, teamID string) *model.AppError {
nErr := a.Srv().Store.Channel().CreateInitialSidebarCategories(userID, teamID)
if nErr != nil {
return model.NewAppError("createInitialSidebarCategories", "app.channel.create_initial_sidebar_categories.internal_error", nil, nErr.Error(), http.StatusInternalServerError)
}
return nil
}
func (a *App) GetSidebarCategories(userID, teamID string) (*model.OrderedSidebarCategories, *model.AppError) {
categories, err := a.Srv().Store.Channel().GetSidebarCategories(userID, teamID)
if err == nil && len(categories.Categories) == 0 {
// A user must always have categories, so migration must not have happened yet, and we should run it ourselves
appErr := a.createInitialSidebarCategories(userID, teamID)
if appErr != nil {
return nil, appErr
}
categories, err = a.waitForSidebarCategories(userID, teamID)
}
if err != nil {
var nfErr *store.ErrNotFound
switch {
case errors.As(err, &nfErr):
return nil, model.NewAppError("GetSidebarCategories", "app.channel.sidebar_categories.app_error", nil, nfErr.Error(), http.StatusNotFound)
default:
return nil, model.NewAppError("GetSidebarCategories", "app.channel.sidebar_categories.app_error", nil, err.Error(), http.StatusInternalServerError)
}
}
return categories, nil
}
// waitForSidebarCategories is used to get a user's sidebar categories after they've been created since there may be
// replication lag if any database replicas exist. It will wait until results are available to return them.
func (a *App) waitForSidebarCategories(userID, teamID string) (*model.OrderedSidebarCategories, error) {
if len(a.Config().SqlSettings.DataSourceReplicas) == 0 {
// The categories should be available immediately on a single database
return a.Srv().Store.Channel().GetSidebarCategories(userID, teamID)
}
now := model.GetMillis()
for model.GetMillis()-now < 12000 {
time.Sleep(100 * time.Millisecond)
categories, err := a.Srv().Store.Channel().GetSidebarCategories(userID, teamID)
if err != nil || len(categories.Categories) > 0 {
// We've found something, so return
return categories, err
}
}
mlog.Error("waitForSidebarCategories giving up", mlog.String("user_id", userID), mlog.String("team_id", teamID))
return &model.OrderedSidebarCategories{}, nil
}
func (a *App) GetSidebarCategoryOrder(userID, teamID string) ([]string, *model.AppError) {
categories, err := a.Srv().Store.Channel().GetSidebarCategoryOrder(userID, teamID)
if err != nil {
var nfErr *store.ErrNotFound
switch {
case errors.As(err, &nfErr):
return nil, model.NewAppError("GetSidebarCategoryOrder", "app.channel.sidebar_categories.app_error", nil, nfErr.Error(), http.StatusNotFound)
default:
return nil, model.NewAppError("GetSidebarCategoryOrder", "app.channel.sidebar_categories.app_error", nil, err.Error(), http.StatusInternalServerError)
}
}
return categories, nil
}
func (a *App) GetSidebarCategory(categoryId string) (*model.SidebarCategoryWithChannels, *model.AppError) {
category, err := a.Srv().Store.Channel().GetSidebarCategory(categoryId)
if err != nil {
var nfErr *store.ErrNotFound
switch {
case errors.As(err, &nfErr):
return nil, model.NewAppError("GetSidebarCategory", "app.channel.sidebar_categories.app_error", nil, nfErr.Error(), http.StatusNotFound)
default:
return nil, model.NewAppError("GetSidebarCategory", "app.channel.sidebar_categories.app_error", nil, err.Error(), http.StatusInternalServerError)
}
}
return category, nil
}
func (a *App) CreateSidebarCategory(userID, teamID string, newCategory *model.SidebarCategoryWithChannels) (*model.SidebarCategoryWithChannels, *model.AppError) {
category, err := a.Srv().Store.Channel().CreateSidebarCategory(userID, teamID, newCategory)
if err != nil {
var nfErr *store.ErrNotFound
switch {
case errors.As(err, &nfErr):
return nil, model.NewAppError("CreateSidebarCategory", "app.channel.sidebar_categories.app_error", nil, nfErr.Error(), http.StatusNotFound)
default:
return nil, model.NewAppError("CreateSidebarCategory", "app.channel.sidebar_categories.app_error", nil, err.Error(), http.StatusInternalServerError)
}
}
message := model.NewWebSocketEvent(model.WEBSOCKET_EVENT_SIDEBAR_CATEGORY_CREATED, teamID, "", userID, nil)
message.Add("category_id", category.Id)
a.Publish(message)
return category, nil
}
func (a *App) UpdateSidebarCategoryOrder(userID, teamID string, categoryOrder []string) *model.AppError {
err := a.Srv().Store.Channel().UpdateSidebarCategoryOrder(userID, teamID, categoryOrder)
if err != nil {
var nfErr *store.ErrNotFound
var invErr *store.ErrInvalidInput
switch {
case errors.As(err, &nfErr):
return model.NewAppError("UpdateSidebarCategoryOrder", "app.channel.sidebar_categories.app_error", nil, nfErr.Error(), http.StatusNotFound)
case errors.As(err, &invErr):
return model.NewAppError("UpdateSidebarCategoryOrder", "app.channel.sidebar_categories.app_error", nil, invErr.Error(), http.StatusBadRequest)
default:
return model.NewAppError("UpdateSidebarCategoryOrder", "app.channel.sidebar_categories.app_error", nil, err.Error(), http.StatusInternalServerError)
}
}
message := model.NewWebSocketEvent(model.WEBSOCKET_EVENT_SIDEBAR_CATEGORY_ORDER_UPDATED, teamID, "", userID, nil)
message.Add("order", categoryOrder)
a.Publish(message)
return nil
}
func (a *App) UpdateSidebarCategories(userID, teamID string, categories []*model.SidebarCategoryWithChannels) ([]*model.SidebarCategoryWithChannels, *model.AppError) {
updatedCategories, originalCategories, err := a.Srv().Store.Channel().UpdateSidebarCategories(userID, teamID, categories)
if err != nil {
return nil, model.NewAppError("UpdateSidebarCategories", "app.channel.sidebar_categories.app_error", nil, err.Error(), http.StatusInternalServerError)
}
message := model.NewWebSocketEvent(model.WEBSOCKET_EVENT_SIDEBAR_CATEGORY_UPDATED, teamID, "", userID, nil)
a.Publish(message)
a.muteChannelsForUpdatedCategories(userID, updatedCategories, originalCategories)
return updatedCategories, nil
}
func (a *App) muteChannelsForUpdatedCategories(userID string, updatedCategories []*model.SidebarCategoryWithChannels, originalCategories []*model.SidebarCategoryWithChannels) {
var channelsToMute []string
var channelsToUnmute []string
// Mute or unmute all channels in categories that were muted or unmuted
for i, updatedCategory := range updatedCategories {
if i > len(originalCategories)-1 {
// The two slices should be the same length, but double check that to be safe
continue
}
originalCategory := originalCategories[i]
if updatedCategory.Muted && !originalCategory.Muted {
channelsToMute = append(channelsToMute, updatedCategory.Channels...)
} else if !updatedCategory.Muted && originalCategory.Muted {
channelsToUnmute = append(channelsToUnmute, updatedCategory.Channels...)
}
}
// Mute any channels moved from an unmuted category into a muted one and vice versa
channelsDiff := diffChannelsBetweenCategories(updatedCategories, originalCategories)
if len(channelsDiff) != 0 {
makeCategoryMap := func(categories []*model.SidebarCategoryWithChannels) map[string]*model.SidebarCategoryWithChannels {
result := make(map[string]*model.SidebarCategoryWithChannels)
for _, category := range categories {
result[category.Id] = category
}
return result
}
updatedCategoriesById := makeCategoryMap(updatedCategories)
originalCategoriesById := makeCategoryMap(originalCategories)
for channelId, diff := range channelsDiff {
fromCategory := originalCategoriesById[diff.fromCategoryId]
toCategory := updatedCategoriesById[diff.toCategoryId]
if toCategory.Muted && !fromCategory.Muted {
channelsToMute = append(channelsToMute, channelId)
} else if !toCategory.Muted && fromCategory.Muted {
channelsToUnmute = append(channelsToUnmute, channelId)
}
}
}
if len(channelsToMute) > 0 {
_, err := a.setChannelsMuted(channelsToMute, userID, true)
if err != nil {
mlog.Error(
"Failed to mute channels to match category",
mlog.String("user_id", userID),
mlog.Err(err),
)
}
}
if len(channelsToUnmute) > 0 {
_, err := a.setChannelsMuted(channelsToUnmute, userID, false)
if err != nil {
mlog.Error(
"Failed to unmute channels to match category",
mlog.String("user_id", userID),
mlog.Err(err),
)
}
}
}
type categoryChannelDiff struct {
fromCategoryId string
toCategoryId string
}
func diffChannelsBetweenCategories(updatedCategories []*model.SidebarCategoryWithChannels, originalCategories []*model.SidebarCategoryWithChannels) map[string]*categoryChannelDiff {
// mapChannelIdsToCategories returns a map of channel IDs to the IDs of the categories that they're a member of.
mapChannelIdsToCategories := func(categories []*model.SidebarCategoryWithChannels) map[string]string {
result := make(map[string]string)
for _, category := range categories {
for _, channelId := range category.Channels {
result[channelId] = category.Id
}
}
return result
}
updatedChannelIdsMap := mapChannelIdsToCategories(updatedCategories)
originalChannelIdsMap := mapChannelIdsToCategories(originalCategories)
// Check for any channels that have changed categories. Note that we don't worry about any channels that have moved
// outside of these categories since that heavily complicates things and doesn't currently happen in our apps.
channelsDiff := make(map[string]*categoryChannelDiff)
for channelId, originalCategoryId := range originalChannelIdsMap {
updatedCategoryId := updatedChannelIdsMap[channelId]
if originalCategoryId != updatedCategoryId && updatedCategoryId != "" {
channelsDiff[channelId] = &categoryChannelDiff{originalCategoryId, updatedCategoryId}
}
}
return channelsDiff
}
func (a *App) DeleteSidebarCategory(userID, teamID, categoryId string) *model.AppError {
err := a.Srv().Store.Channel().DeleteSidebarCategory(categoryId)
if err != nil {
var invErr *store.ErrInvalidInput
switch {
case errors.As(err, &invErr):
return model.NewAppError("DeleteSidebarCategory", "app.channel.sidebar_categories.app_error", nil, invErr.Error(), http.StatusBadRequest)
default:
return model.NewAppError("DeleteSidebarCategory", "app.channel.sidebar_categories.app_error", nil, err.Error(), http.StatusInternalServerError)
}
}
message := model.NewWebSocketEvent(model.WEBSOCKET_EVENT_SIDEBAR_CATEGORY_DELETED, teamID, "", userID, nil)
message.Add("category_id", categoryId)
a.Publish(message)
return nil
}