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command.go
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command.go
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// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
package app
import (
"fmt"
"io/ioutil"
"net/http"
"net/url"
"strings"
l4g "github.com/alecthomas/log4go"
"github.com/mattermost/platform/model"
"github.com/mattermost/platform/utils"
goi18n "github.com/nicksnyder/go-i18n/i18n"
)
type CommandProvider interface {
GetTrigger() string
GetCommand(T goi18n.TranslateFunc) *model.Command
DoCommand(args *model.CommandArgs, message string) *model.CommandResponse
}
var commandProviders = make(map[string]CommandProvider)
func RegisterCommandProvider(newProvider CommandProvider) {
commandProviders[newProvider.GetTrigger()] = newProvider
}
func GetCommandProvider(name string) CommandProvider {
provider, ok := commandProviders[name]
if ok {
return provider
}
return nil
}
func CreateCommandPost(post *model.Post, teamId string, response *model.CommandResponse) (*model.Post, *model.AppError) {
post.Message = parseSlackLinksToMarkdown(response.Text)
post.CreateAt = model.GetMillis()
if response.Attachments != nil {
parseSlackAttachment(post, response.Attachments)
}
if response.ResponseType == model.COMMAND_RESPONSE_TYPE_IN_CHANNEL {
return CreatePostMissingChannel(post, true)
} else if response.ResponseType == "" || response.ResponseType == model.COMMAND_RESPONSE_TYPE_EPHEMERAL {
if response.Text == "" {
return post, nil
}
post.ParentId = ""
SendEphemeralPost(post.UserId, post)
}
return post, nil
}
// previous ListCommands now ListAutocompleteCommands
func ListAutocompleteCommands(teamId string, T goi18n.TranslateFunc) ([]*model.Command, *model.AppError) {
commands := make([]*model.Command, 0, 32)
seen := make(map[string]bool)
for _, value := range commandProviders {
cpy := *value.GetCommand(T)
if cpy.AutoComplete && !seen[cpy.Id] {
cpy.Sanitize()
seen[cpy.Trigger] = true
commands = append(commands, &cpy)
}
}
if *utils.Cfg.ServiceSettings.EnableCommands {
if result := <-Srv.Store.Command().GetByTeam(teamId); result.Err != nil {
return nil, result.Err
} else {
teamCmds := result.Data.([]*model.Command)
for _, cmd := range teamCmds {
if cmd.AutoComplete && !seen[cmd.Id] {
cmd.Sanitize()
seen[cmd.Trigger] = true
commands = append(commands, cmd)
}
}
}
}
return commands, nil
}
func ListTeamCommands(teamId string) ([]*model.Command, *model.AppError) {
if !*utils.Cfg.ServiceSettings.EnableCommands {
return nil, model.NewAppError("ListTeamCommands", "api.command.disabled.app_error", nil, "", http.StatusNotImplemented)
}
if result := <-Srv.Store.Command().GetByTeam(teamId); result.Err != nil {
return nil, result.Err
} else {
return result.Data.([]*model.Command), nil
}
}
func ListAllCommands(teamId string, T goi18n.TranslateFunc) ([]*model.Command, *model.AppError) {
commands := make([]*model.Command, 0, 32)
seen := make(map[string]bool)
for _, value := range commandProviders {
cpy := *value.GetCommand(T)
if cpy.AutoComplete && !seen[cpy.Id] {
cpy.Sanitize()
seen[cpy.Trigger] = true
commands = append(commands, &cpy)
}
}
if *utils.Cfg.ServiceSettings.EnableCommands {
if result := <-Srv.Store.Command().GetByTeam(teamId); result.Err != nil {
return nil, result.Err
} else {
teamCmds := result.Data.([]*model.Command)
for _, cmd := range teamCmds {
if !seen[cmd.Id] {
cmd.Sanitize()
seen[cmd.Trigger] = true
commands = append(commands, cmd)
}
}
}
}
return commands, nil
}
func ExecuteCommand(args *model.CommandArgs) (*model.CommandResponse, *model.AppError) {
parts := strings.Split(args.Command, " ")
trigger := parts[0][1:]
trigger = strings.ToLower(trigger)
message := strings.Join(parts[1:], " ")
provider := GetCommandProvider(trigger)
if provider != nil {
response := provider.DoCommand(args, message)
return HandleCommandResponse(provider.GetCommand(args.T), args, response, true)
} else {
if !*utils.Cfg.ServiceSettings.EnableCommands {
return nil, model.NewAppError("ExecuteCommand", "api.command.disabled.app_error", nil, "", http.StatusNotImplemented)
}
chanChan := Srv.Store.Channel().Get(args.ChannelId, true)
teamChan := Srv.Store.Team().Get(args.TeamId)
userChan := Srv.Store.User().Get(args.UserId)
if result := <-Srv.Store.Command().GetByTeam(args.TeamId); result.Err != nil {
return nil, result.Err
} else {
var team *model.Team
if tr := <-teamChan; tr.Err != nil {
return nil, tr.Err
} else {
team = tr.Data.(*model.Team)
}
var user *model.User
if ur := <-userChan; ur.Err != nil {
return nil, ur.Err
} else {
user = ur.Data.(*model.User)
}
var channel *model.Channel
if cr := <-chanChan; cr.Err != nil {
return nil, cr.Err
} else {
channel = cr.Data.(*model.Channel)
}
teamCmds := result.Data.([]*model.Command)
for _, cmd := range teamCmds {
if trigger == cmd.Trigger {
l4g.Debug(fmt.Sprintf(utils.T("api.command.execute_command.debug"), trigger, args.UserId))
p := url.Values{}
p.Set("token", cmd.Token)
p.Set("team_id", cmd.TeamId)
p.Set("team_domain", team.Name)
p.Set("channel_id", args.ChannelId)
p.Set("channel_name", channel.Name)
p.Set("user_id", args.UserId)
p.Set("user_name", user.Username)
p.Set("command", "/"+trigger)
p.Set("text", message)
if hook, err := CreateCommandWebhook(cmd.Id, args); err != nil {
return nil, model.NewAppError("command", "api.command.execute_command.failed.app_error", map[string]interface{}{"Trigger": trigger}, err.Error(), http.StatusInternalServerError)
} else {
p.Set("response_url", args.SiteURL+"/hooks/commands/"+hook.Id)
}
method := "POST"
if cmd.Method == model.COMMAND_METHOD_GET {
method = "GET"
}
req, _ := http.NewRequest(method, cmd.URL, strings.NewReader(p.Encode()))
req.Header.Set("Accept", "application/json")
if cmd.Method == model.COMMAND_METHOD_POST {
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
}
if resp, err := utils.HttpClient(false).Do(req); err != nil {
return nil, model.NewAppError("command", "api.command.execute_command.failed.app_error", map[string]interface{}{"Trigger": trigger}, err.Error(), http.StatusInternalServerError)
} else {
if resp.StatusCode == http.StatusOK {
response := model.CommandResponseFromHTTPBody(resp.Header.Get("Content-Type"), resp.Body)
if response == nil {
return nil, model.NewAppError("command", "api.command.execute_command.failed_empty.app_error", map[string]interface{}{"Trigger": trigger}, "", http.StatusInternalServerError)
} else {
return HandleCommandResponse(cmd, args, response, false)
}
} else {
defer resp.Body.Close()
body, _ := ioutil.ReadAll(resp.Body)
return nil, model.NewAppError("command", "api.command.execute_command.failed_resp.app_error", map[string]interface{}{"Trigger": trigger, "Status": resp.Status}, string(body), http.StatusInternalServerError)
}
}
}
}
}
}
return nil, model.NewAppError("command", "api.command.execute_command.not_found.app_error", map[string]interface{}{"Trigger": trigger}, "", http.StatusNotFound)
}
func HandleCommandResponse(command *model.Command, args *model.CommandArgs, response *model.CommandResponse, builtIn bool) (*model.CommandResponse, *model.AppError) {
post := &model.Post{}
post.ChannelId = args.ChannelId
post.RootId = args.RootId
post.ParentId = args.ParentId
post.UserId = args.UserId
if !builtIn {
post.AddProp("from_webhook", "true")
}
if utils.Cfg.ServiceSettings.EnablePostUsernameOverride {
if len(command.Username) != 0 {
post.AddProp("override_username", command.Username)
} else if len(response.Username) != 0 {
post.AddProp("override_username", response.Username)
}
}
if utils.Cfg.ServiceSettings.EnablePostIconOverride {
if len(command.IconURL) != 0 {
post.AddProp("override_icon_url", command.IconURL)
} else if len(response.IconURL) != 0 {
post.AddProp("override_icon_url", response.IconURL)
} else {
post.AddProp("override_icon_url", "")
}
}
if _, err := CreateCommandPost(post, args.TeamId, response); err != nil {
l4g.Error(err.Error())
}
return response, nil
}
func CreateCommand(cmd *model.Command) (*model.Command, *model.AppError) {
if !*utils.Cfg.ServiceSettings.EnableCommands {
return nil, model.NewAppError("CreateCommand", "api.command.disabled.app_error", nil, "", http.StatusNotImplemented)
}
cmd.Trigger = strings.ToLower(cmd.Trigger)
if result := <-Srv.Store.Command().GetByTeam(cmd.TeamId); result.Err != nil {
return nil, result.Err
} else {
teamCmds := result.Data.([]*model.Command)
for _, existingCommand := range teamCmds {
if cmd.Trigger == existingCommand.Trigger {
return nil, model.NewAppError("CreateCommand", "api.command.duplicate_trigger.app_error", nil, "", http.StatusBadRequest)
}
}
for _, builtInProvider := range commandProviders {
builtInCommand := *builtInProvider.GetCommand(utils.T)
if cmd.Trigger == builtInCommand.Trigger {
return nil, model.NewAppError("CreateCommand", "api.command.duplicate_trigger.app_error", nil, "", http.StatusBadRequest)
}
}
}
if result := <-Srv.Store.Command().Save(cmd); result.Err != nil {
return nil, result.Err
} else {
return result.Data.(*model.Command), nil
}
}
func GetCommand(commandId string) (*model.Command, *model.AppError) {
if !*utils.Cfg.ServiceSettings.EnableCommands {
return nil, model.NewAppError("GetCommand", "api.command.disabled.app_error", nil, "", http.StatusNotImplemented)
}
if result := <-Srv.Store.Command().Get(commandId); result.Err != nil {
result.Err.StatusCode = http.StatusNotFound
return nil, result.Err
} else {
return result.Data.(*model.Command), nil
}
}
func UpdateCommand(oldCmd, updatedCmd *model.Command) (*model.Command, *model.AppError) {
if !*utils.Cfg.ServiceSettings.EnableCommands {
return nil, model.NewAppError("UpdateCommand", "api.command.disabled.app_error", nil, "", http.StatusNotImplemented)
}
updatedCmd.Trigger = strings.ToLower(updatedCmd.Trigger)
updatedCmd.Id = oldCmd.Id
updatedCmd.Token = oldCmd.Token
updatedCmd.CreateAt = oldCmd.CreateAt
updatedCmd.UpdateAt = model.GetMillis()
updatedCmd.DeleteAt = oldCmd.DeleteAt
updatedCmd.CreatorId = oldCmd.CreatorId
updatedCmd.TeamId = oldCmd.TeamId
if result := <-Srv.Store.Command().Update(updatedCmd); result.Err != nil {
return nil, result.Err
} else {
return result.Data.(*model.Command), nil
}
}
func RegenCommandToken(cmd *model.Command) (*model.Command, *model.AppError) {
if !*utils.Cfg.ServiceSettings.EnableCommands {
return nil, model.NewAppError("RegenCommandToken", "api.command.disabled.app_error", nil, "", http.StatusNotImplemented)
}
cmd.Token = model.NewId()
if result := <-Srv.Store.Command().Update(cmd); result.Err != nil {
return nil, result.Err
} else {
return result.Data.(*model.Command), nil
}
}
func DeleteCommand(commandId string) *model.AppError {
if !*utils.Cfg.ServiceSettings.EnableCommands {
return model.NewAppError("DeleteCommand", "api.command.disabled.app_error", nil, "", http.StatusNotImplemented)
}
if err := (<-Srv.Store.Command().Delete(commandId, model.GetMillis())).Err; err != nil {
return err
}
return nil
}