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main.go
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main.go
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package main
import (
"bytes"
"fmt"
"log"
"math/rand"
"os"
"strings"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/nlopes/slack"
"github.com/quintilesims/slackbot/bot"
"github.com/quintilesims/slackbot/db"
"github.com/quintilesims/slackbot/runner"
"github.com/quintilesims/slackbot/utils"
"github.com/urfave/cli"
)
// Version of the application
var Version string
func main() {
if Version == "" {
Version = "unset/develop"
}
slackbot := cli.NewApp()
slackbot.Name = "slackbot"
slackbot.Version = Version
slackbot.Flags = []cli.Flag{
cli.BoolFlag{
Name: "d, debug",
Usage: "enable debug logging",
EnvVar: "SB_DEBUG",
},
cli.StringFlag{
Name: "slack-bot-token",
Usage: "authentication token for the slack bot",
EnvVar: "SB_SLACK_BOT_TOKEN",
},
cli.StringFlag{
Name: "slack-app-token",
Usage: "authentication token for the slack application",
EnvVar: "SB_SLACK_APP_TOKEN",
},
cli.StringFlag{
Name: "tenor-key",
Usage: "authentication key for the Tenor API",
EnvVar: "SB_TENOR_KEY",
},
cli.StringFlag{
Name: "aws-region",
Usage: "region for aws api",
Value: "us-west-2",
EnvVar: "SB_AWS_REGION",
},
cli.StringFlag{
Name: "aws-access-key",
Usage: "access key for aws api",
EnvVar: "SB_AWS_ACCESS_KEY",
},
cli.StringFlag{
Name: "aws-secret-key",
Usage: "secret key for aws api",
EnvVar: "SB_AWS_SECRET_KEY",
},
cli.StringFlag{
Name: "dynamodb-table",
Usage: "name of the dynamodb table",
EnvVar: "SB_DYNAMODB_TABLE",
},
}
var appClient *slack.Client
var botClient *slack.Client
var store db.Store
slackbot.Before = func(c *cli.Context) error {
rand.Seed(time.Now().UnixNano())
debug := c.Bool("debug")
log.SetOutput(utils.NewLogWriter(debug))
botToken := c.String("slack-bot-token")
if botToken == "" {
return fmt.Errorf("Bot Token is not set!")
}
botClient = slack.New(botToken)
botClient.SetDebug(debug)
appToken := c.String("slack-app-token")
if appToken == "" {
return fmt.Errorf("App Token is not set!")
}
appClient = slack.New(appToken)
appClient.SetDebug(debug)
accessKey := c.String("aws-access-key")
if accessKey == "" {
return fmt.Errorf("AWS Access Key is not set!")
}
secretKey := c.String("aws-secret-key")
if secretKey == "" {
return fmt.Errorf("AWS Secret Key is not set!")
}
region := c.String("aws-region")
if region == "" {
return fmt.Errorf("AWS Region is not set!")
}
table := c.String("dynamodb-table")
if table == "" {
return fmt.Errorf("DynamoDB Table is not set!")
}
config := &aws.Config{
Credentials: credentials.NewStaticCredentials(accessKey, secretKey, ""),
Region: aws.String(region),
}
store = db.NewDynamoDBStore(session.New(config), table)
if err := db.Init(store); err != nil {
return err
}
return nil
}
slackbot.Action = func(c *cli.Context) error {
aliasBehavior := bot.NewAliasBehavior(store)
behaviors := bot.Behaviors{
bot.NewNormalizeTextBehavior(),
aliasBehavior.Behavior(),
bot.NewKarmaTrackingBehavior(store),
}
defer runner.NewCleanupRunner(store).RunEvery(time.Hour).Stop()
defer runner.NewReminderRunner(store, botClient).RunEvery(time.Minute * 30).Stop()
// initiate the RTM websocket connection
rtm := botClient.NewRTM()
defer rtm.Disconnect()
go rtm.ManageConnection()
// allow the RedoBehavior to send events to the rtm.IncomingEvents channel
redoBehavior := bot.NewRedoBehavior(rtm.IncomingEvents)
for event := range rtm.IncomingEvents {
if err := behaviors.Run(event); err != nil {
log.Printf("[ERROR] %v", err)
}
switch e := event.Data.(type) {
case *slack.ConnectedEvent:
log.Printf("[INFO] Slack connection successful!")
case *slack.MessageEvent:
if !strings.HasPrefix(e.Msg.Text, "!") {
continue
}
args, err := utils.ParseShell("slackbot " + e.Msg.Text)
if err != nil {
msg := rtm.NewOutgoingMessage(err.Error(), e.Channel)
rtm.SendMessage(msg)
continue
}
var isDisplayingHelp bool
w := bytes.NewBuffer(nil)
app := cli.NewApp()
app.Name = "slackbot"
app.Usage = "making email obsolete one step at a time"
app.UsageText = "command [flags...] arguments..."
app.Version = Version
app.Writer = utils.WriterFunc(func(b []byte) (n int, err error) {
isDisplayingHelp = true
return w.Write(b)
})
app.CommandNotFound = func(c *cli.Context, command string) {
text := fmt.Sprintf("Command '%s' does not exist", command)
w.WriteString(text)
}
app.Commands = []cli.Command{
bot.NewAliasCommand(store, w, aliasBehavior.Invalidate),
bot.NewCandidateCommand(store, w),
bot.NewDefineCommand(bot.DatamuseAPIEndpoint, w),
bot.NewEchoCommand(w),
bot.NewGIFCommand(bot.TenorAPIEndpoint, c.String("tenor-key"), w),
bot.NewGlossaryCommand(store, w),
bot.NewHelpCommand(w),
bot.NewInterviewCommand(store, w),
bot.NewKarmaCommand(store, w),
bot.NewRedoCommand(func() error { return redoBehavior.Trigger(e.Msg.Channel) }),
bot.NewTriviaCommand(store, bot.TriviaAPIEndpoint, w),
bot.NewUndoCommand(appClient, botClient, e.Channel, rtm.GetInfo().User.ID),
}
// record the 'last event' for each channel
redoBehavior.Record(e.Msg.Channel, event)
if err := app.Run(args); err != nil {
log.Printf("[ERROR] %v", err)
w.WriteString(err.Error())
}
text := w.String()
if isDisplayingHelp {
text = fmt.Sprintf("```%s```", text)
}
msg := rtm.NewOutgoingMessage(text, e.Channel)
rtm.SendMessage(msg)
case *slack.InvalidAuthEvent:
return fmt.Errorf("The bot's auth token is invalid")
default:
log.Printf("[DEBUG] Unhandled event: %#v", event)
}
}
return nil
}
if err := slackbot.Run(os.Args); err != nil {
fmt.Println(err)
os.Exit(1)
}
}