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main.go
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package main
import (
"fmt"
"encoding/json"
"io/ioutil"
"log"
"os"
"sort"
"strings"
"github.com/nlopes/slack"
)
const (
freeOwner = "Free"
)
type Resources struct {
Resources []Resource `json:"resources"`
}
type Resource struct {
Name string `json:"name"`
Description string `json:"description"`
Owner string `json:"owner"`
}
var resource Resources
func updateFile() {
file, _ := json.MarshalIndent(resource, "", " ")
_ = ioutil.WriteFile("gotcha.json", file, 0644)
}
func processMessage(ev *slack.MessageEvent, api *slack.Client) {
botInfo, err := api.GetBotInfo("BMLAVS5N3")
if err != nil {
log.Printf("Get User Identity error: %s\n", err)
}
log.Printf("TEST USER IDENTITY: %s-%s-%s", ev.SubType, botInfo.ID, ev.BotID)
if ev.SubType == "bot_message" && botInfo.ID == ev.BotID {
return
}
idx := 0
// case *slackevents.AppMentionEvent:
// idx += 1
user, err := api.GetUserInfo(ev.User)
if err != nil {
log.Printf("Get User Info error (message event): %s\n", err)
return
}
s := strings.Fields(ev.Text)
if len(s) > (idx+1) || s[idx] == "list" || s[idx] == "help" {
var userParam slack.GetConversationsForUserParameters
channels, _, err := api.GetConversationsForUser(&userParam)
if err != nil {
log.Printf("Get Conversations error: %s\n", err)
}
channelId := channels[0].ID
switch s[idx] {
case "lock":
name := s[idx+1]
for i, s := range resource.Resources {
if s.Name == name {
if s.Owner == freeOwner {
resource.Resources[i].Owner = ev.User
api.PostMessage(channelId, slack.MsgOptionText(name + " locked by " + user.RealName, false))
} else if s.Owner == ev.User {
api.PostMessage(ev.Channel, slack.MsgOptionText(name + " already locked by " + user.RealName + " (You)", false))
} else {
user, err := api.GetUserInfo(s.Owner)
if err != nil {
log.Printf("Get User Info error (lock): %s\n", err)
}
api.PostMessage(ev.Channel, slack.MsgOptionText(name + " locked by " + user.RealName, false))
}
return
}
}
updateFile()
api.PostMessage(ev.Channel, slack.MsgOptionText(name + " not added", false))
case "unlock":
name := s[idx+1]
for i, s := range resource.Resources {
if s.Name == name {
if s.Owner == ev.User {
resource.Resources[i].Owner = freeOwner
api.PostMessage(channelId, slack.MsgOptionText(name + " unlocked by " + user.RealName, false))
} else if s.Owner == freeOwner {
api.PostMessage(ev.Channel, slack.MsgOptionText(name + " already unlocked", false))
} else {
user, err := api.GetUserInfo(s.Owner)
if err != nil {
log.Printf("Get User Info error (unlock): %s\n", err)
}
api.PostMessage(ev.Channel, slack.MsgOptionText(name + " locked by " + user.RealName, false))
}
return
}
}
updateFile()
api.PostMessage(ev.Channel, slack.MsgOptionText(name + " not added", false))
case "add":
name := s[idx+1]
description := "-"
if len(s) > 2 {
description = strings.Join(s[idx+2:], " ")
}
for _, s := range resource.Resources {
if s.Name == name {
api.PostMessage(ev.Channel, slack.MsgOptionText(name + " already added", false))
return
}
}
newResource := Resource {
Name: name,
Description: description,
Owner: freeOwner,
}
resource.Resources = append(resource.Resources, newResource)
sort.Slice(resource.Resources, func(i, j int) bool {
return resource.Resources[i].Name < resource.Resources[j].Name
})
updateFile()
api.PostMessage(channelId, slack.MsgOptionText(name + " (" + description + ") added by " + user.RealName, false))
case "delete":
name := s[idx+1]
for i, s := range resource.Resources {
if s.Name == name {
if s.Owner == freeOwner {
resource.Resources = append(resource.Resources[:i], resource.Resources[i+1:]...)
api.PostMessage(channelId, slack.MsgOptionText(name + " deleted by " + user.RealName, false))
} else if s.Owner == ev.User {
api.PostMessage(ev.Channel, slack.MsgOptionText(name + " locked by " + user.RealName + " (You)", false))
} else {
user, err := api.GetUserInfo(s.Owner)
if err != nil {
log.Printf("Get User Info error (delete): %s\n", err)
}
api.PostMessage(ev.Channel, slack.MsgOptionText(name + " locked by " + user.RealName, false))
}
return
}
}
updateFile()
api.PostMessage(ev.Channel, slack.MsgOptionText(name + " not added", false))
case "update":
name := s[idx+1]
description := "-"
if len(s) > 2 {
description = strings.Join(s[idx+2:], " ")
}
for i, s := range resource.Resources {
if s.Name == name {
if s.Owner == ev.User || s.Owner == freeOwner {
resource.Resources[i].Description = description
api.PostMessage(channelId, slack.MsgOptionText(name + " (" + description + ") updated by " + user.RealName, false))
} else {
user, err := api.GetUserInfo(s.Owner)
if err != nil {
log.Printf("Get User Info error (update): %s\n", err)
}
api.PostMessage(ev.Channel, slack.MsgOptionText(name + " locked by " + user.RealName, false))
}
return
}
}
api.PostMessage(ev.Channel, slack.MsgOptionText(name + "not added ", false))
case "list":
var text string
if len(resource.Resources) != 0 {
text += fmt.Sprintf("```%15.15s %-20.20s %s\n", "Name", "Owner", "Description")
for _, s := range resource.Resources {
owner := freeOwner
if s.Owner != freeOwner {
user, _ = api.GetUserInfo(s.Owner)
owner = user.RealName
}
text += fmt.Sprintf("%15.15s %-20.20s %s\n", s.Name, owner, s.Description)
}
text += "```"
} else {
text = "No resource added yet. Please refer to the add command to create one."
}
api.PostMessage(ev.Channel, slack.MsgOptionText(text, false))
case "help":
api.PostMessage(ev.Channel, slack.MsgOptionText("Available commands are:\nlock <resource>\nunlock <resource>\nadd <resource> <description>\ndelete <resource>\nupdate <resource> <description>\nlist", false))
}
}
}
func getenv(name string) string {
v := os.Getenv(name)
if v == "" {
panic("missing required environment variable " + name)
}
return v
}
func main() {
token := getenv("SLACKTOKEN")
api := slack.New(
token,
slack.OptionDebug(true),
slack.OptionLog(log.New(os.Stdout, "slack-bot: ", log.Lshortfile|log.LstdFlags)),
)
rtm := api.NewRTM()
go rtm.ManageConnection()
file, _ := ioutil.ReadFile("gotcha.json")
_ = json.Unmarshal([]byte(file), &resource)
for msg := range rtm.IncomingEvents {
log.Print("Event Received: ")
switch ev := msg.Data.(type) {
case *slack.HelloEvent:
// Ignore hello
case *slack.ConnectedEvent:
log.Println("Infos:", ev.Info)
log.Println("Connection counter:", ev.ConnectionCount)
// Replace C2147483705 with your Channel ID
// rtm.SendMessage(rtm.NewOutgoingMessage("Hello world", "C2147483705"))
case *slack.MessageEvent:
channel, err := api.GetConversationInfo(ev.Channel, false)
if err != nil {
log.Printf("Get Conversation info error: %s\n", err)
return
}
if channel.IsIM {
processMessage(ev, api)
} else {
log.Printf("The message has not come from a direct message: %s\n", ev.Text)
}
case *slack.PresenceChangeEvent:
log.Printf("Presence Change: %v\n", ev)
case *slack.LatencyReport:
log.Printf("Current latency: %v\n", ev.Value)
case *slack.RTMError:
log.Printf("Error: %s\n", ev.Error())
case *slack.InvalidAuthEvent:
log.Printf("Invalid credentials")
return
default:
log.Printf("Unexpected: %v\n", msg.Data)
}
}
}