Functioning with leaderboard updates

.gitignore

@@ -0,0 +1,7 @@
+slack-api-key
+cookies
+aoc_leaderboard.json
+aocbot
+aocbot.db
+runbot.sh
+*.log

aoc_structs.go

@@ -0,0 +1,18 @@
+package main
+
+import "time"
+
+type Leaderboard struct {
+	OwnerID string            `json:"owner_id"`
+	Event   string            `json:"event"`
+	Members map[string]Member `json:"members"`
+}
+
+type Member struct {
+	ID         string `json:"id"`
+	Stars      int    `json:"stars"`
+	RawStarTs  string `json:"last_star_ts"`
+	LastStarTs time.Time
+	Name       string `json:"name"`
+	SlackID    string
+}

aocbot.go

@@ -3,7 +3,12 @@ package main
 import (
 	"encoding/json"
 	"fmt"
+	"io/ioutil"
+	"net/http"
 	"os"
+	"regexp"
+	"strconv"
+	"strings"
 	"time"
 
 	"gogs.bullercodeworks.com/brian/boltease"
@@ -11,42 +16,14 @@ import (
 
 const programName = "aocbot"
 
-// Message Processors are interfaces for interacting.
-type messageProcessor interface {
-	GetName() string
-	GetHelp() string
-	ProcessMessage(s *Slack, m *Message)
-	ProcessAdminMessage(s *Slack, m *Message)
-	ProcessBotMessage(s *Slack, m *Message)
-	ProcessUserMessage(s *Slack, m *Message)
-	ProcessAdminUserMessage(s *Slack, m *Message)
-	ProcessBotUserMessage(s *Slack, m *Message)
-	ProcessChannelMessage(s *Slack, m *Message)
-	ProcessAdminChannelMessage(s *Slack, m *Message)
-	ProcessBotChannelMessage(s *Slack, m *Message)
-}
-
-var messageProcessors []messageProcessor
-
-// Message Processors are interfaces for accumulating statistics.
-type statProcessor interface {
-	GetName() string
-	GetStatKeys() []string
-	Initialize()
-	ProcessMessage(m *Message)
-	ProcessBotMessage(m *Message)
-	ProcessUserMessage(m *Message)
-	ProcessBotUserMessage(m *Message)
-	ProcessChannelMessage(m *Message)
-	ProcessBotChannelMessage(m *Message)
-}
-
-var statProcessors []statProcessor
 var db *boltease.DB
+var boardID string
+
+var slackChannel string
 
 func main() {
-	if len(os.Args) != 2 {
+	if len(os.Args) != 3 {
-		fmt.Fprintf(os.Stderr, "usage: "+programName+" <slack-bot-token>\n")
+		fmt.Fprintf(os.Stderr, "usage: "+programName+" <slack-bot-token> <aoc-leaderboard-number>\n")
 		os.Exit(1)
 	}
 
@@ -56,22 +33,68 @@ func main() {
 	if db, err = getDatabase(); err != nil {
 		panic(err)
 	}
+	slackChannel = "C0G3X1M5K"
+
+	// DevICT Leaderboard: 3549
+	boardID = os.Args[2]
 
 	if slack, err = CreateSlack(os.Args[1]); err != nil {
 		panic(err)
 	}
 
-	statBotMain(slack)
+	aocBotMain(slack)
 }
 
 // This is the main function for the statbot
-func statBotMain(slack *Slack) {
+func aocBotMain(slack *Slack) {
 	// start a websocket-based Real Time API session
-	registerMessageProcessor(new(generalProcessor))
-
 	fmt.Println("aoc-bot ready, ^C exits")
 
 	writeToLog("== " + time.Now().Format(time.RFC3339) + " - Bot Started ==\n")
+	var lastAoCUpdate time.Time
+	go func() {
+		for {
+			var err error
+			lastAoCUpdate = time.Now()
+			var leaderboard *Leaderboard
+			fmt.Println(lastAoCUpdate.Format(time.RFC3339) + ": Fetching Online Leaderboard")
+			if leaderboard, err = getAoCLeaderboard(boardID); err != nil {
+				fmt.Println(err.Error())
+			}
+
+			for _, v := range leaderboard.Members {
+				var mbr *Member
+				if mbr, err = getAoCUser(v.ID); err != nil {
+					// Member doesn't exist in db, add it
+					// Notify br0xen ( U030RD9NU )
+					m := new(Message)
+					m.Type = "message"
+					m.Channel = "D0D793N5R"
+					m.Text = "AoC Leaderboard has a new member! " + v.Name
+					fmt.Println("New Leaderboard Member Found: " + v.Name)
+					if err = slack.postMessage(*m); err != nil {
+						fmt.Println(err.Error())
+					}
+					saveAoCUser(&v)
+					continue
+				}
+				if mbr.Stars != v.Stars {
+					// Number of stars has changed
+					fmt.Println(v.ID + "(" + v.Name + "): " + v.LastStarTs.Format(time.RFC3339))
+					m := new(Message)
+					m.Type = "message"
+					m.Channel = slackChannel
+					m.Text = ":christmas_tree: " + v.Name + " now has " + strconv.Itoa(v.Stars) + " stars! :christmas_tree:"
+					if err = slack.postMessage(*m); err != nil {
+						fmt.Println(err.Error())
+					}
+					saveAoCUser(&v)
+				}
+			}
+			time.Sleep(time.Minute * 10)
+		}
+	}()
+
 	for {
 		// read each incoming message
 		m, err := slack.getMessage()
@@ -79,6 +102,7 @@ func statBotMain(slack *Slack) {
 			writeToLog("   " + time.Now().Format(time.RFC3339) + " - Received Message\n")
 			processMessage(slack, &m)
 		}
+
 	}
 	writeToLog("== " + time.Now().Format(time.RFC3339) + " - Bot Stopped ==\n\n")
 }
@@ -94,33 +118,15 @@ func processMessage(slack *Slack, m *Message) {
 		var usr *User
 
 		// Check if we know who the user is
-		usr, err = getUserInfo(m.User)
+		usr, err = getUser(m.User)
 		// If the user information hasn't been updated in the last day, update it.
 		if err != nil || usr.LastUpdated.IsZero() || time.Since(usr.LastUpdated) > (time.Hour*24) {
 			if u, ue := slack.getUserInfo(m.User); ue == nil {
-				saveUserInfo(u)
+				saveUser(u)
-			}
-		}
-
-		for _, stats := range statProcessors {
-			if usr.IsBot {
-				stats.ProcessBotMessage(m)
-			} else {
-				stats.ProcessMessage(m)
-			}
-		}
-
-		for _, proc := range messageProcessors {
-			if isAdmin(m.User) {
-				proc.ProcessAdminMessage(slack, m)
-			}
-			if usr.IsBot {
-				proc.ProcessBotMessage(slack, m)
-			} else {
-				proc.ProcessMessage(slack, m)
 			}
 		}
 
+		// TODO: Process the message
 		if m.Channel != "" {
 			// Check if we know what the channel is
 			chnl, err := getChannelInfo(m.Channel)
@@ -137,30 +143,133 @@ func processMessage(slack *Slack, m *Message) {
 				}
 			}
 			if isDirectMessage {
-				for _, proc := range messageProcessors {
+				if m.User == "U030RD9NU" {
-					if isAdmin(m.User) {
+					// message from br0xen
-						proc.ProcessAdminUserMessage(slack, m)
+					if strings.HasPrefix(m.Text, "!aoc") {
+						var slackId, aocNm, op string
+						flds := strings.Fields(m.Text)
+						if len(flds) < 2 {
+							// No operation specified
+							return
+						}
+						op = flds[1]
+						if op == "help" {
+							// TODO: Send help message
+						}
+						if op == "match" {
+							re := regexp.MustCompile("[<\"]([^>]*)[>\"]")
+							matchUp := re.FindAllString(m.Text, -1)
+
+							for i := range matchUp {
+								if matchUp[i][0] == '<' {
+									slackId = matchUp[i][1 : len(matchUp[i])-1]
+								}
+								if matchUp[i][0] == '"' {
+									aocNm = matchUp[i][1 : len(matchUp[i])-1]
+								}
+							}
+
+							var m *Member
+							if m, err = getAoCUserByName(aocNm); err != nil {
+								// AoC Member doesn't exist in DB
+								fmt.Println("AoC User " + aocNm + " doesn't exist in DB")
+								fmt.Println(err.Error())
+								return
+							}
+							m.SlackID = slackId
+							saveAoCUser(m)
+						} else if op == "ping" {
+							m := new(Message)
+							m.Type = "message"
+							m.Channel = "D0D793N5R"
+							m.Text = ":christmas_tree: PONG :christmas_tree:"
+							if err = slack.postMessage(*m); err != nil {
+								fmt.Println(err.Error())
+							}
+						}
 					}
-					proc.ProcessUserMessage(slack, m)
+					/*
+					   ID:				0
+					   Type:			message
+					   Channel:	D0D793N5R
+					   User:			U030RD9NU
+					   Name:
+					   Text:			testing
+					   Ts:				1481044675.000003
+					*/
 				}
 			} else {
-				for _, proc := range messageProcessors {
+				fmt.Println("--- Channel Message Received")
-					proc.ProcessChannelMessage(slack, m)
+				fmt.Println(m.Channel, m.User, m.Text)
+				if m.Channel == slackChannel {
+					// In the AoC channel
+					if strings.HasPrefix(m.Text, "!aoc") {
+						var op string
+						flds := strings.Fields(m.Text)
+						if len(flds) < 2 {
+							// No operation specified
+							return
+						}
+						op = flds[1]
+						if op == "ping" {
+							m := new(Message)
+							m.Type = "message"
+							m.Channel = slackChannel
+							m.Text = ":christmas_tree: PONG :christmas_tree:"
+							if err = slack.postMessage(*m); err != nil {
+								fmt.Println(err.Error())
+							}
+						}
+					}
 				}
+				// TODO: Process Channel Message
+				/*
+					for _, proc := range messageProcessors {
+						proc.ProcessChannelMessage(slack, m)
+					}
+				*/
 			}
 		}
 	}
 }
 
-func registerMessageProcessor(b messageProcessor) {
+func getAoCLeaderboard(boardId string) (*Leaderboard, error) {
-	// Register a Message Processor
+	var err error
-	// Make sure that we haven't already registered it
+	var req *http.Request
-	for _, proc := range messageProcessors {
+	var content []byte
-		if proc.GetName() == b.GetName() {
+	var resp *http.Response
-			panic(fmt.Errorf("Attempted to Re-register Message Processor %s", b.GetName()))
+	var body []byte
-		}
+	leaderboard := new(Leaderboard)
+
+	client := &http.Client{}
+	boardString := "http://adventofcode.com/2016/leaderboard/private/view/" + boardId + ".json"
+
+	req, err = http.NewRequest("GET", boardString, nil)
+	// Read in cookies
+	content, err = ioutil.ReadFile("./cookies")
+	if err != nil {
+		fmt.Println("Error reading Cookies")
+		return leaderboard, err
 	}
-	messageProcessors = append(messageProcessors, b)
+	line := strings.TrimSpace(string(content))
+	req.Header.Add("Cookie", line)
+
+	resp, err = client.Do(req)
+	if err != nil {
+		fmt.Println("Error getting leaderboard")
+	}
+	defer resp.Body.Close()
+	body, err = ioutil.ReadAll(resp.Body)
+	if err != nil {
+		fmt.Println("Error reading response body.")
+		return leaderboard, err
+	}
+	err = json.Unmarshal(body, &leaderboard)
+	for k, mbr := range leaderboard.Members {
+		mbr.LastStarTs, err = time.Parse("2006-01-02T15:04:05-0700", mbr.RawStarTs)
+		leaderboard.Members[k] = mbr
+	}
+	return leaderboard, err
 }
 
 func writeToLog(d string) {

model.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"strings"
 	"time"
 
 	"gogs.bullercodeworks.com/brian/boltease"
@@ -9,44 +10,46 @@ import (
 func getDatabase() (*boltease.DB, error) {
 	db, err := boltease.Create("aocbot.db", 0644, nil)
 	if err != nil {
-		return err
+		return db, err
 	}
 	// Make sure that we have a 'users' bucket
 	db.MkBucketPath([]string{"users"})
 	// Make sure that we have a 'channels' bucket
 	db.MkBucketPath([]string{"channels"})
+	// Make sure that we have a 'aocmembers' bucket
+	db.MkBucketPath([]string{"AoCMembers"})
 
 	return db, nil
 }
 
-func (db *boltease.DB) saveUser(usr *User) error {
+func saveUser(usr *User) error {
 	var err error
 	if err = db.OpenDB(); err != nil {
 		return err
 	}
 	defer db.CloseDB()
 
-	usr := []string{"users", usr.ID}
+	usrPath := []string{"users", usr.ID}
-	db.SetValue(append(usr, "Name"), usr.Name)
+	db.SetValue(usrPath, "Name", usr.Name)
-	db.SetBool(append(usr, "Deleted"), usr.Deleted)
+	db.SetBool(usrPath, "Deleted", usr.Deleted)
-	db.SetValue(append(usr, "Status"), usr.Status)
+	db.SetValue(usrPath, "Status", usr.Status)
-	db.SetValue(append(usr, "Color"), usr.Color)
+	db.SetValue(usrPath, "Color", usr.Color)
-	db.SetValue(append(usr, "RealName"), usr.RealName)
+	db.SetValue(usrPath, "RealName", usr.RealName)
-	db.SetValue(append(usr, "TZ"), usr.TZ)
+	db.SetValue(usrPath, "TZ", usr.TZ)
-	db.SetValue(append(usr, "TZLabel"), usr.TZLabel)
+	db.SetValue(usrPath, "TZLabel", usr.TZLabel)
-	db.SetInt(append(usr, "TZOffset"), usr.TZOffset)
+	db.SetInt(usrPath, "TZOffset", usr.TZOffset)
-	db.SetBool(append(usr, "IsAdmin"), usr.IsAdmin)
+	db.SetBool(usrPath, "IsAdmin", usr.IsAdmin)
-	db.SetBool(append(usr, "IsOwner"), usr.IsOwner)
+	db.SetBool(usrPath, "IsOwner", usr.IsOwner)
-	db.SetBool(append(usr, "IsPrimaryOwner"), usr.IsPrimaryOwner)
+	db.SetBool(usrPath, "IsPrimaryOwner", usr.IsPrimaryOwner)
-	db.SetBool(append(usr, "IsRestricted"), usr.IsRestricted)
+	db.SetBool(usrPath, "IsRestricted", usr.IsRestricted)
-	db.SetBool(append(usr, "IsUltraRestricted"), usr.IsUltraRestricted)
+	db.SetBool(usrPath, "IsUltraRestricted", usr.IsUltraRestricted)
-	db.SetBool(append(usr, "IsBot"), usr.IsBot)
+	db.SetBool(usrPath, "IsBot", usr.IsBot)
-	db.SetBool(append(usr, "HasFiles"), usr.HasFiles)
+	db.SetBool(usrPath, "HasFiles", usr.HasFiles)
-	db.SetTimestamp(append(usr, "LastUpdated"), time.Now())
+	db.SetTimestamp(usrPath, "LastUpdated", time.Now())
 	return err
 }
 
-func (db *boltease.DB) getUser(usrId string) (*User, error) {
+func getUser(usrId string) (*User, error) {
 	usr := new(User)
 	var err error
 	if err = db.OpenDB(); err != nil {
@@ -54,53 +57,172 @@ func (db *boltease.DB) getUser(usrId string) (*User, error) {
 	}
 	defer db.CloseDB()
 
-	upath := []string{"users", usrID}
+	upath := []string{"users", usrId}
-	if usr.Name, err = db.GetValue(append(upath, "Name")); err != nil {
+	if usr.Name, err = db.GetValue(upath, "Name"); err != nil {
 		return usr, err
 	}
-	if usr.Deleted, err = db.GetBool(append(upath, "Deleted")); err != nil {
+	if usr.Deleted, err = db.GetBool(upath, "Deleted"); err != nil {
 		return usr, err
 	}
-	if usr.Status, err = db.GetValue(append(upath, "Status")); err != nil {
+	if usr.Status, err = db.GetValue(upath, "Status"); err != nil {
 		return usr, err
 	}
-	if usr.Color, err = db.GetValue(append(upath, "Color")); err != nil {
+	if usr.Color, err = db.GetValue(upath, "Color"); err != nil {
 		return usr, err
 	}
-	if usr.RealName, err = db.GetValue(append(upath, "RealName")); err != nil {
+	if usr.RealName, err = db.GetValue(upath, "RealName"); err != nil {
 		return usr, err
 	}
-	if usr.TZ, err = db.GetValue(append(upath, "TZ")); err != nil {
+	if usr.TZ, err = db.GetValue(upath, "TZ"); err != nil {
 		return usr, err
 	}
-	if usr.TZLabel, err = db.GetValue(append(upath, "TZLabel")); err != nil {
+	if usr.TZLabel, err = db.GetValue(upath, "TZLabel"); err != nil {
 		return usr, err
 	}
-	if usr.TZOffset, err = db.GetInt(append(upath, "TZOffset")); err != nil {
+	if usr.TZOffset, err = db.GetInt(upath, "TZOffset"); err != nil {
 		return usr, err
 	}
-	if usr.IsAdmin, err = db.GetBool(append(upath, "IsAdmin")); err != nil {
+	if usr.IsAdmin, err = db.GetBool(upath, "IsAdmin"); err != nil {
 		return usr, err
 	}
-	if usr.IsOwner, err = db.GetBool(append(upath, "IsOwner")); err != nil {
+	if usr.IsOwner, err = db.GetBool(upath, "IsOwner"); err != nil {
 		return usr, err
 	}
-	if usr.IsPrimaryOwner, err = db.GetBool(append(upath, "IsPrimaryOwner")); err != nil {
+	if usr.IsPrimaryOwner, err = db.GetBool(upath, "IsPrimaryOwner"); err != nil {
 		return usr, err
 	}
-	if usr.IsRestricted, err = db.GetBool(append(upath, "IsRestricted")); err != nil {
+	if usr.IsRestricted, err = db.GetBool(upath, "IsRestricted"); err != nil {
 		return usr, err
 	}
-	if usr.IsUltraRestricted, err = db.GetBool(append(upath, "IsUltraRestricted")); err != nil {
+	if usr.IsUltraRestricted, err = db.GetBool(upath, "IsUltraRestricted"); err != nil {
 		return usr, err
 	}
-	if usr.IsBot, err = db.GetBool(append(upath, "IsBot")); err != nil {
+	if usr.IsBot, err = db.GetBool(upath, "IsBot"); err != nil {
 		return usr, err
 	}
-	if usr.HasFiles, err = db.GetBool(append(upath, "HasFiles")); err != nil {
+	if usr.HasFiles, err = db.GetBool(upath, "HasFiles"); err != nil {
 		return usr, err
 	}
-	usr.LastUpdated, err = db.GetTimestamp(append(upath, "LastUpdated"))
+	usr.LastUpdated, err = db.GetTimestamp(upath, "LastUpdated")
 
 	return usr, err
 }
+
+func getChannelInfo(chanId string) (*Channel, error) {
+	ret := new(Channel)
+	var err error
+	if err = db.OpenDB(); err != nil {
+		return ret, err
+	}
+	defer db.CloseDB()
+
+	cPath := []string{"channels", chanId}
+	if ret.ID, err = db.GetValue(cPath, "ID"); err != nil {
+		return ret, err
+	}
+	if ret.Name, err = db.GetValue(cPath, "Name"); err != nil {
+		return ret, err
+	}
+	if ret.IsChannel, err = db.GetBool(cPath, "IsChannel"); err != nil {
+		return ret, err
+	}
+	if ret.IsGeneral, err = db.GetBool(cPath, "IsGeneral"); err != nil {
+		return ret, err
+	}
+	if ret.IsMember, err = db.GetBool(cPath, "IsMember"); err != nil {
+		return ret, err
+	}
+	var mbrString string
+	if mbrString, err = db.GetValue(cPath, "Members"); err != nil {
+		return ret, err
+	}
+	ret.Members = strings.Split(mbrString, ",")
+	return ret, err
+}
+
+func saveChannelInfo(c *Channel) error {
+	var err error
+	if err = db.OpenDB(); err != nil {
+		return err
+	}
+	defer db.CloseDB()
+
+	cPath := []string{"channels", c.ID}
+	db.SetValue(cPath, "ID", c.ID)
+	db.SetValue(cPath, "Name", c.Name)
+	db.SetBool(cPath, "IsChannel", c.IsChannel)
+	db.SetBool(cPath, "IsGeneral", c.IsGeneral)
+	db.SetBool(cPath, "IsMember", c.IsMember)
+	db.SetValue(cPath, "Members", strings.Join(c.Members, ","))
+	return nil
+}
+
+func saveAoCUser(m *Member) error {
+	var err error
+	if err = db.OpenDB(); err != nil {
+		return err
+	}
+	defer db.CloseDB()
+
+	mPath := []string{"AoCMembers", m.ID}
+	db.SetValue(mPath, "ID", m.ID)
+	db.SetValue(mPath, "Name", m.Name)
+	db.SetInt(mPath, "Stars", m.Stars)
+	db.SetTimestamp(mPath, "LastStarTs", m.LastStarTs)
+	db.SetValue(mPath, "SlackID", m.SlackID)
+	return nil
+}
+
+func getAoCUser(mbrId string) (*Member, error) {
+	ret := new(Member)
+	var err error
+	if err = db.OpenDB(); err != nil {
+		return ret, err
+	}
+	defer db.CloseDB()
+
+	mPath := []string{"AoCMembers", mbrId}
+	if ret.ID, err = db.GetValue(mPath, "ID"); err != nil {
+		return ret, err
+	}
+	if ret.Stars, err = db.GetInt(mPath, "Stars"); err != nil {
+		return ret, err
+	}
+	if ret.LastStarTs, err = db.GetTimestamp(mPath, "LastStarTs"); err != nil {
+		return ret, err
+	}
+	if ret.Name, err = db.GetValue(mPath, "Name"); err != nil {
+		return ret, err
+	}
+	ret.SlackID, err = db.GetValue(mPath, "SlackID")
+	return ret, err
+}
+
+func getAoCUserByName(nm string) (*Member, error) {
+	var err error
+	if err = db.OpenDB(); err != nil {
+		return nil, err
+	}
+	defer db.CloseDB()
+
+	mPath := []string{"AoCMembers"}
+	var bktList []string
+	if bktList, err = db.GetBucketList(mPath); err != nil {
+		return nil, err
+	}
+	var dbNm, dbId string
+	for i := range bktList {
+		dbNm, err = db.GetValue(append(mPath, bktList[i]), "Name")
+		if err != nil {
+			return nil, err
+		}
+		if nm == dbNm {
+			dbId, err = db.GetValue(append(mPath, bktList[i]), "ID")
+			if err != nil {
+				return nil, err
+			}
+			return getAoCUser(dbId)
+		}
+	}
+	return nil, err
+}

slack.go

@@ -5,6 +5,8 @@ import (
 	"fmt"
 	"io/ioutil"
 	"net/http"
+	"strconv"
+	"strings"
 	"sync/atomic"
 	"time"
 
@@ -91,7 +93,15 @@ func (s *Slack) getMessage() (Message, error) {
 
 func (s *Slack) sendMessageToUser(uid string, msg string) error {
 	// TODO: Actually send a direct message to uid
-	return nil
+	m := new(Message)
+	m.ID = atomic.AddUint64(&counter, 1)
+	m.Type = "message"
+	m.Channel = ""
+	m.User = uid
+	m.Name = ""
+	m.Text = msg
+
+	return websocket.JSON.Send(s.socket, m)
 }
 
 func (s *Slack) getUserInfo(uid string) (*User, error) {
@@ -122,6 +132,41 @@ func (s *Slack) getUserInfo(uid string) (*User, error) {
 	return respObj.User, nil
 }
 
+func (s *Slack) getChannelList() ([]Channel, error) {
+	url := fmt.Sprintf("https://slack.com/api/channels.list?token=%s", s.apiToken)
+	resp, err := http.Get(url)
+	if err != nil {
+		return nil, err
+	}
+	if resp.StatusCode != 200 {
+		err = fmt.Errorf("API request failed with code %d", resp.StatusCode)
+		return nil, err
+	}
+	body, err := ioutil.ReadAll(resp.Body)
+	resp.Body.Close()
+	if err != nil {
+		return nil, err
+	}
+	fmt.Println(string(body))
+
+	var respObj responseChannelList
+	err = json.Unmarshal(body, &respObj)
+	if err != nil {
+		return nil, err
+	}
+
+	if !respObj.Ok {
+		err = fmt.Errorf("Slack error: %s", respObj.Error)
+		return nil, err
+	}
+
+	for i := range respObj.Channels {
+		respObj.Channels[i].LastRead = convertSlackTimestamp(respObj.Channels[i].LastReadRaw)
+	}
+
+	return respObj.Channels, nil
+}
+
 func (s *Slack) getChannelInfo(cid string) (*Channel, error) {
 	url := fmt.Sprintf("https://slack.com/api/channels.info?token=%s&channel=%s", s.apiToken, cid)
 	resp, err := http.Get(url)
@@ -153,34 +198,6 @@ func (s *Slack) getChannelInfo(cid string) (*Channel, error) {
 	return respObj.Channel, nil
 }
 
-func (s *Slack) joinChannel(c *Channel) error {
-	url := fmt.Sprintf("https://slack.com/api/channels.join?token=%s&name=%s", s.apiToken, c.Name)
-	resp, err := http.Get(url)
-	if err != nil {
-		return err
-	}
-	if resp.StatusCode != 200 {
-		err = fmt.Errorf("API request failed with code %d", resp.StatusCode)
-		return err
-	}
-	body, err := ioutil.ReadAll(resp.Body)
-	resp.Body.Close()
-	if err != nil {
-		return err
-	}
-	var respObj responseChannelLookup
-	err = json.Unmarshal(body, &respObj)
-	if err != nil {
-		return err
-	}
-
-	if !respObj.Ok {
-		err = fmt.Errorf("Slack error: %s", respObj.Error)
-		return err
-	}
-	return err
-}
-
 // These structures represent the response of the Slack API events
 // Only some fields are included. The rest are ignored by json.Unmarshal.
 type responseRtmStart struct {
@@ -205,3 +222,19 @@ type responseChannelLookup struct {
 	Error   string   `json:"error"`
 	Channel *Channel `json:"channel"`
 }
+
+type responseChannelList struct {
+	Ok       bool      `json:"ok"`
+	Error    string    `json:"error"`
+	Channels []Channel `json:"channels"`
+}
+
+func convertSlackTimestamp(ts string) time.Time {
+	var ret time.Time
+	txtArr := strings.Split(ts, ".")
+	if t, err := strconv.Atoi(txtArr[0]); err == nil {
+		rawts := int64(t)
+		ret = time.Unix(0, rawts*1000000000)
+	}
+	return ret
+}

slack_structs.go

@@ -39,6 +39,15 @@ type Channel struct {
 	LastUpdated time.Time
 }
 
+// ChannelTopic A simple 'Channel Topic' object
+// used for several things in the slack api (channel topic/purpose, etc.
+type ChannelTopic struct {
+	Value      string `json:"value"`
+	Creator    string `json:"creator"`
+	LastSetRaw int    `json:"last_set"`
+	LastSet    time.Time
+}
+
 // User object
 type User struct {
 	ID                string `json:"id"`