last: add multichannel support

This
* ensures the last is between yesterday and yesterday
* adds a channel check to the query
* adds a command to check a specific channel

bot/interfaces.go

@@ -189,6 +189,12 @@ type Connector interface {
 
 	// Translate emojy to/from services
 	Emojy(string) string
+
+	// GetChannelName returns the human-friendly name for an ID (if possible)
+	GetChannelName(id string) string
+
+	// GetChannelName returns the channel ID for a human-friendly name (if possible)
+	GetChannelID(id string) string
 }
 
 // Plugin interface used for compatibility with the Plugin interface

connectors/discord/discord.go

@@ -232,3 +232,26 @@ func (d *Discord) Emojy(name string) string {
 func (d *Discord) URLFormat(title, url string) string {
 	return fmt.Sprintf("%s (%s)", title, url)
 }
+
+// GetChannelName returns the channel ID for a human-friendly name (if possible)
+func (d *Discord) GetChannelID(name string) string {
+	chs, err := d.client.UserChannels()
+	if err != nil {
+		return name
+	}
+	for _, ch := range chs {
+		if ch.Name == name {
+			return ch.ID
+		}
+	}
+	return name
+}
+
+// GetChannelName returns the human-friendly name for an ID (if possible)
+func (d *Discord) GetChannelName(id string) string {
+	ch, err := d.client.Channel(id)
+	if err != nil {
+		return id
+	}
+	return ch.Name
+}

connectors/irc/irc.go

@@ -326,3 +326,13 @@ func (i Irc) Emojy(name string) string {
 	}
 	return name
 }
+
+// GetChannelName returns the channel ID for a human-friendly name (if possible)
+func (i Irc) GetChannelID(name string) string {
+	return name
+}
+
+// GetChannelName returns the human-friendly name for an ID (if possible)
+func (i Irc) GetChannelName(id string) string {
+	return id
+}

connectors/slack/slack.go

@@ -4,6 +4,8 @@
 package slack
 
 import (
+	// "sync/atomic"
+	"context"
 	"encoding/json"
 	"errors"
 	"fmt"
@@ -15,9 +17,6 @@ import (
 	"regexp"
 	"strconv"
 	"strings"
-
-	// "sync/atomic"
-	"context"
 	"time"
 
 	"github.com/rs/zerolog/log"
@@ -735,6 +734,28 @@ func (s *Slack) Profile(string) (user.User, error) {
 	return user.User{}, fmt.Errorf("unimplemented")
 }
 
+// GetChannelName returns the channel ID for a human-friendly name (if possible)
+func (s *Slack) GetChannelID(name string) string {
+	chs := s.getAllChannels()
+	for _, ch := range chs {
+		if ch.Name == name {
+			return ch.ID
+		}
+	}
+	return name
+}
+
+// GetChannelName returns the human-friendly name for an ID (if possible)
+func (s *Slack) GetChannelName(id string) string {
+	chs := s.getAllChannels()
+	for _, ch := range chs {
+		if ch.ID == id {
+			return ch.Name
+		}
+	}
+	return id
+}
+
 func (s *Slack) Emojy(name string) string {
 	e := s.config.GetMap("slack.emojy", map[string]string{})
 	if emojy, ok := e[name]; ok {

connectors/slackapp/slackApp.go

@@ -499,6 +499,26 @@ func (s *SlackApp) getChannel(id string) (*slack.Channel, error) {
 	return s.channels[id], nil
 }
 
+// GetChannelName returns the channel ID for a human-friendly name (if possible)
+func (s *SlackApp) GetChannelID(name string) string {
+	for _, ch := range s.channels {
+		if ch.Name == name {
+			return ch.ID
+		}
+	}
+	return name
+}
+
+// GetChannelName returns the human-friendly name for an ID (if possible)
+func (s *SlackApp) GetChannelName(id string) string {
+	ch, err := s.getChannel(id)
+	if err != nil {
+		log.Error().Err(err).Msgf("Could not get channel name for %s", id)
+		return id
+	}
+	return ch.Name
+}
+
 func stringForUser(user *slack.User) string {
 	if user.Profile.DisplayName != "" {
 		return user.Profile.DisplayName

plugins/cli/cli.go

@@ -121,3 +121,5 @@ func (p *CliPlugin) Emojy(name string) string { return name }
 func (p *CliPlugin) URLFormat(title, url string) string {
 	return fmt.Sprintf("%s (%s)", title, url)
 }
+func (p *CliPlugin) GetChannelName(id string) string { return id }
+func (p *CliPlugin) GetChannelID(name string) string { return name }

plugins/last/last.go

@@ -58,18 +58,24 @@ func (p *LastPlugin) migrate() error {
 
 func (p *LastPlugin) register() {
 	p.handlers = bot.HandlerTable{
-		{
-			Kind: bot.Message, IsCmd: false,
-			Regex:    regexp.MustCompile(`.*`),
-			HelpText: "Last does secret stuff you don't need to know about.",
-			Handler:  p.recordLast,
-		},
 		{
 			Kind: bot.Message, IsCmd: true,
 			Regex:    regexp.MustCompile(`(?i)^who killed the channel\??$`),
 			HelpText: "Find out who had last yesterday",
 			Handler:  p.whoKilled,
 		},
+		{
+			Kind: bot.Message, IsCmd: true,
+			Regex:    regexp.MustCompile(`(?i)^who killed #?(?P<channel>\S+)\??$`),
+			HelpText: "Find out who had last yesterday in a channel",
+			Handler:  p.whoKilledChannel,
+		},
+		{
+			Kind: bot.Message, IsCmd: false,
+			Regex:    regexp.MustCompile(`.*`),
+			HelpText: "Last does secret stuff you don't need to know about.",
+			Handler:  p.recordLast,
+		},
 	}
 	p.b.RegisterTable(p, p.handlers)
 }
@@ -133,11 +139,12 @@ type last struct {
 	Message string
 }
 
-func (p *LastPlugin) yesterdaysLast() (last, error) {
+func (p *LastPlugin) yesterdaysLast(ch string) (last, error) {
 	l := last{}
 	midnight := first.Midnight(time.Now())
-	q := `select * from last where day < ? order by day limit 1`
-	err := p.db.Get(&l, q, midnight)
+	q := `select * from last where channel = ? and day < ?  and day >= ? order by day limit 1`
+	log.Debug().Str("q", q).Msgf("yesterdaysLast: %d to %d", midnight.Unix(), midnight.Add(-24*time.Hour).Unix())
+	err := p.db.Get(&l, q, ch, midnight.Unix(), midnight.Add(-24*time.Hour).Unix())
 	if err != nil {
 		return l, err
 	}
@@ -146,27 +153,33 @@ func (p *LastPlugin) yesterdaysLast() (last, error) {
 
 func (p *LastPlugin) reportLast(ch string) func() {
 	return func() {
-		p.sayLast(p.b.DefaultConnector(), ch)
+		p.sayLast(p.b.DefaultConnector(), ch, ch)
 		time.AfterFunc(24*time.Hour, p.reportLast(ch))
 	}
 }
 
 func (p *LastPlugin) whoKilled(r bot.Request) bool {
-	p.sayLast(r.Conn, r.Msg.Channel)
+	p.sayLast(r.Conn, r.Msg.Channel, r.Msg.Channel)
 	return true
 }
 
-func (p *LastPlugin) sayLast(c bot.Connector, ch string) {
-	l, err := p.yesterdaysLast()
+func (p *LastPlugin) whoKilledChannel(r bot.Request) bool {
+	ch := r.Values["channel"]
+	p.sayLast(r.Conn, r.Conn.GetChannelID(ch), r.Msg.Channel)
+	return true
+}
+
+func (p *LastPlugin) sayLast(c bot.Connector, chFrom, chTo string) {
+	l, err := p.yesterdaysLast(chFrom)
 	if err != nil {
 		log.Error().Err(err).Msgf("Couldn't find last")
-		p.b.Send(c, bot.Message, ch, "I couldn't find a last.")
+		p.b.Send(c, bot.Message, chTo, "I couldn't find a last.")
 		return
 	}
 	if l.Day == 0 {
 		log.Error().Interface("l", l).Msgf("Couldn't find last")
-		p.b.Send(c, bot.Message, ch, "I couldn't find a last.")
+		p.b.Send(c, bot.Message, chTo, "I couldn't find a last.")
 	}
 	msg := fmt.Sprintf(`%s killed the channel last night by saying "%s"`, l.Who, l.Message)
-	p.b.Send(c, bot.Message, ch, msg)
+	p.b.Send(c, bot.Message, chTo, msg)
 }