First commit for moonsla

.gitignore

@@ -0,0 +1 @@
+moonsla

.travis.yml

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+language: go
+
+go:
+  - "1.10"
+
+services:
+  - docker
+
+script:
+  - go test -v -race -coverprofile=coverage.txt -covermode=atomic
+  - wget https://github.com/Crazybus/lope/releases/download/0.2.0/lope-linux_amd64 -O lope && chmod +x lope
+  - ./lope -workDir /go/src/github.com/Crazybus/moonsla -blacklist GO golang:1.10 '/usr/local/go/bin/go get -v ./... && /usr/local/go/bin/go run build/build.go'
+
+after_success:
+  - bash <(curl -s https://codecov.io/bash)
+
+deploy:
+  provider: releases
+  api_key:
+    secure: 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
+  file_glob: true
+  file: build/moonsla*
+  skip_cleanup: true
+  on:
+    tags: true

README.md

@@ -1,2 +1,40 @@
-# moonsla
-View all the slack messages!
+# Moonsla
+
+[![Build Status](https://travis-ci.org/Crazybus/moonsla.svg?branch=master)](https://travis-ci.org/Crazybus/moonsla)
+
+Moonsla is a small tool to display a stream of slack messages in a single view.
+
+It looks something like this
+
+```
+10:42:37 - general - Michael Russell: Weird I never knew that slack threads were just normal messages
+10:42:55 - random - Someone Else: Sweet Potato!
+10:43:37 - general - John Smith: Can people please stop using threads for everything!
+```
+
+# Usage
+
+If you don't have one already you will need to generate a [slack API token](https://api.slack.com/custom-integrations/legacy-tokens)
+
+You need to set this to your `SLACK_TOKEN` environment variable
+```
+export SLACK_TOKEN='xoxp-1231231231232323-123123123123-123123123123123-c91238917239123'
+moonsla
+```
+
+You can also set `SLACK_CHANNELS` to a comma separated list of channels to filter for
+```
+export SLACK_CHANNELS='general,random'
+```
+
+# Why?
+
+I'm not a fan of notifications because they are very intrusive. Instead I used to keep slack always open with the slackbot channel active (so I don't accidentally type shell commands into #general). Whenever I had a spare moment I would then check each slack channel to see if there was anything that needed my attention. This took a bit too long and quite often the message would be bot telling me I had just submitted a pull request
+
+# Future
+
+* Fix channel naming for slackbot and private channels
+* Improve formatting of messages so that sub-teams, urls and everything else is formatted as expected
+* Automatically link to the slack message so it is easy to open up the message from moonsla in slack
+* Support multiple slack workspaces
+* Add an optional web interface to make things look pretty and allow displaying of images

build/build.go

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+package main
+
+import (
+	"crypto/sha256"
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"os/exec"
+	"path/filepath"
+)
+
+var buildDir = filepath.FromSlash("build/")
+
+var operatingSystems = [...]string{
+	"darwin",
+	"linux",
+	"windows",
+}
+
+var archs = [...]string{
+	"386",
+	"amd64",
+}
+
+func checksum(goos string, goarch string) error {
+	file := buildDir + "moonsla-" + goos + "_" + goarch
+	f, err := os.Open(file)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	h := sha256.New()
+	if _, err := io.Copy(h, f); err != nil {
+		return err
+	}
+	sumFile := file + ".sha256"
+	hash := fmt.Sprintf("%x", h.Sum(nil))
+	fmt.Println(hash, file)
+
+	hashFile, err := os.Create(sumFile)
+	if err != nil {
+		return err
+	}
+	defer hashFile.Close()
+
+	_, err = hashFile.WriteString(hash)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func build(goos string, goarch string) error {
+	os.Setenv("GOOS", goos)
+	os.Setenv("GOARCH", goarch)
+
+	cmd := exec.Command(
+		"/usr/local/go/bin/go",
+		"build",
+		"-v",
+		"-o",
+		buildDir+"moonsla-"+goos+"_"+goarch,
+	)
+	return cmd.Run()
+}
+
+func main() {
+	for _, goos := range operatingSystems {
+		for _, goarch := range archs {
+			err := build(goos, goarch)
+			if err != nil {
+				log.Printf("Failed to build %s/%s with error: %v", goos, goarch, err)
+				os.Exit(1)
+			}
+			err = checksum(goos, goarch)
+			if err != nil {
+				log.Printf("Failed to generate checksums for %s/%s with error: %v", goos, goarch, err)
+				os.Exit(1)
+			}
+		}
+	}
+}

moonsla.go

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+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/nlopes/slack"
+)
+
+func getChannels(api *slack.Client) (channels map[string]string) {
+	channels = make(map[string]string)
+	chans, _ := api.GetChannels(true)
+	for _, c := range chans {
+		channels[c.ID] = c.Name
+	}
+	return channels
+}
+
+func getUsers(api *slack.Client) (users map[string]string) {
+	users = make(map[string]string)
+	allUsers, _ := api.GetUsers()
+	for _, u := range allUsers {
+		users[u.ID] = u.RealName
+	}
+	return users
+}
+
+func getTimeStamp(ts string) (timeStamp time.Time) {
+	i, err := strconv.ParseInt(strings.Split(ts, ".")[0], 10, 64)
+	if err != nil {
+		panic(err)
+	}
+	timeStamp = time.Unix(i, 0)
+	return timeStamp
+}
+
+func formatMentions(msg string, users map[string]string) string {
+	re := regexp.MustCompile("<@U.*?>")
+	matches := re.FindAllString(msg, -1)
+	for _, m := range matches {
+		userID := m[2:(len(m) - 1)]
+		username, ok := users[userID]
+		if ok {
+			username = "@" + username
+			msg = strings.Replace(msg, m, username, -1)
+		}
+	}
+	return msg
+}
+
+func filterChannel(name string, channels map[string]string, whitelist []string) (whitelisted bool, cName string) {
+	whitelisted = false
+
+	cName, ok := channels[name]
+	if ok {
+		for _, w := range whitelist {
+			if cName == w {
+				whitelisted = true
+			}
+		}
+	} else {
+		whitelisted = true
+		cName = name
+	}
+
+	if len(whitelist) == 0 {
+		whitelisted = true
+	}
+
+	return whitelisted, cName
+}
+
+func main() {
+
+	slackToken, ok := os.LookupEnv("SLACK_TOKEN")
+	if !ok {
+		fmt.Println("Please set your SLACK_TOKEN")
+	}
+	api := slack.New(slackToken)
+
+	logger := log.New(os.Stdout, "slack-bot: ", log.Lshortfile|log.LstdFlags)
+	slack.SetLogger(logger)
+	api.SetDebug(false)
+
+	channels := getChannels(api)
+	fmt.Printf("Found %v channels\n", len(channels))
+
+	users := getUsers(api)
+	fmt.Printf("Found %v users\n", len(users))
+
+	rtm := api.NewRTM()
+	go rtm.ManageConnection()
+
+	whitelist := strings.Split(os.Getenv("SLACK_CHANNELS"), ",")
+	fmt.Printf("Channel whitelist: %v\n", whitelist)
+
+	for msg := range rtm.IncomingEvents {
+
+		switch ev := msg.Data.(type) {
+
+		case *slack.MessageEvent:
+
+			// Skip empty messages
+			if ev.Text == "" {
+				continue
+			}
+
+			whitelisted, cName := filterChannel(ev.Channel, channels, whitelist)
+			if !whitelisted {
+				continue
+			}
+
+			// Map the users ID to a username if it exists
+			uName, ok := users[ev.User]
+			if !ok {
+				uName = ev.User
+			}
+
+			t := getTimeStamp(ev.EventTimestamp)
+			timeStamp := fmt.Sprintf("%02d:%02d:%02d", t.Hour(), t.Minute(), t.Second())
+
+			msg := formatMentions(ev.Text, users)
+
+			fmt.Printf("%v - %v - %v: %v\n", timeStamp, cName, uName, msg)
+
+		case *slack.RTMError:
+			fmt.Printf("Error: %s\n", ev.Error())
+
+		case *slack.InvalidAuthEvent:
+			fmt.Printf("Invalid credentials")
+			return
+
+		default:
+			// Ignore other events..
+			// fmt.Printf("Unexpected: %v\n", msg.Data)
+		}
+	}
+}