Lint: Fix all linter errors

Signed-off-by: Knut Ahlers <knut@ahlers.me>

attributeStore.go

@@ -80,15 +80,15 @@ func (m moduleAttributeStore) Int64(name string) (int64, error) {
 		return 0, errValueNotSet
 	}
 
-	switch v.(type) {
+	switch v := v.(type) {
 	case int:
-		return int64(v.(int)), nil
+		return int64(v), nil
 	case int16:
-		return int64(v.(int16)), nil
+		return int64(v), nil
 	case int32:
-		return int64(v.(int32)), nil
+		return int64(v), nil
 	case int64:
-		return v.(int64), nil
+		return v, nil
 	}
 
 	return 0, errValueMismatch
@@ -117,14 +117,14 @@ func (m moduleAttributeStore) StringSlice(name string) ([]string, error) {
 		return nil, errValueNotSet
 	}
 
-	switch v.(type) {
+	switch v := v.(type) {
 	case []string:
-		return v.([]string), nil
+		return v, nil
 
 	case []interface{}:
 		var out []string
 
-		for _, iv := range v.([]interface{}) {
+		for _, iv := range v {
 			sv, ok := iv.(string)
 			if !ok {
 				return nil, errors.New("value in slice was not string")

mod_clearChannel.go

@@ -17,6 +17,10 @@ import (
  * @module_desc Cleans up old messages from a channel (for example announcement channel) which are older than the retention time
  */
 
+const (
+	clearChannelNumberOfMessagesToLoad = 100
+)
+
 func init() {
 	RegisterModule("clearchannel", func() module { return &modClearChannel{} })
 }
@@ -79,15 +83,15 @@ func (m modClearChannel) cronClearChannel() {
 	}
 
 	for {
-		msgs, err := m.discord.ChannelMessages(channelID, 100, "", after, "")
+		msgs, err := m.discord.ChannelMessages(channelID, clearChannelNumberOfMessagesToLoad, "", after, "")
 		if err != nil {
 			log.WithError(err).Error("Unable to fetch announcement channel messages")
 			return
 		}
 
 		sort.Slice(msgs, func(i, j int) bool {
-			iu, _ := strconv.ParseUint(msgs[i].ID, 10, 64)
+			iu, _ := strconv.ParseUint(msgs[i].ID, 10, 64) //nolint: gomnd // These make no sense to define as constants
-			ju, _ := strconv.ParseUint(msgs[j].ID, 10, 64)
+			ju, _ := strconv.ParseUint(msgs[j].ID, 10, 64) //nolint: gomnd // These make no sense to define as constants
 			return iu < ju
 		})
 

mod_livePosting.go

@@ -3,6 +3,7 @@ package main
 import (
 	"context"
 	"net/url"
+	"strconv"
 	"strings"
 	"time"
 
@@ -18,6 +19,16 @@ import (
  * @module_desc Announces stream live status based on Discord streaming status
  */
 
+const (
+	livePostingDefaultStreamFreshness = 5 * time.Minute
+	livePostingDiscordProfileHeight   = 300
+	livePostingDiscordProfileWidth    = 300
+	livePostingNumberOfMessagesToLoad = 100
+	livePostingPreviewHeight          = 180
+	livePostingPreviewWidth           = 320
+	livePostingTwitchColor            = 0x6441a5
+)
+
 func init() {
 	RegisterModule("liveposting", func() module { return &modLivePosting{} })
 }
@@ -46,6 +57,7 @@ func (m *modLivePosting) Initialize(crontab *cron.Cron, discord *discordgo.Sessi
 	return nil
 }
 
+//nolint: gocyclo // One directive too many, makes no sense to split
 func (m modLivePosting) handlePresenceUpdate(d *discordgo.Session, p *discordgo.PresenceUpdate) {
 	if p.User == nil {
 		// The frick? Non-user presence?
@@ -127,7 +139,7 @@ func (m modLivePosting) handlePresenceUpdate(d *discordgo.Session, p *discordgo.
 	}
 
 	// @attr stream_freshness optional duration "5m" How long after stream start to post shoutout
-	ignoreTime := m.attrs.MustDuration("stream_freshness", ptrDuration(5*time.Minute))
+	ignoreTime := m.attrs.MustDuration("stream_freshness", ptrDuration(livePostingDefaultStreamFreshness))
 	if streams.Data[0].StartedAt.Add(ignoreTime).Before(time.Now()) {
 		// Stream is too old, don't annoounce
 		return
@@ -156,12 +168,12 @@ func (m modLivePosting) sendLivePost(username, displayName, title, game, preview
 	)
 
 	// @attr discord_channel_id required string "" ID of the Discord channel to post the message to
-	msgs, err := m.discord.ChannelMessages(m.attrs.MustString("discord_channel_id", nil), 100, "", "", "")
+	msgs, err := m.discord.ChannelMessages(m.attrs.MustString("discord_channel_id", nil), livePostingNumberOfMessagesToLoad, "", "", "")
 	if err != nil {
 		return errors.Wrap(err, "fetching previous messages")
 	}
 
-	ignoreTime := m.attrs.MustDuration("stream_freshness", ptrDuration(5*time.Minute))
+	ignoreTime := m.attrs.MustDuration("stream_freshness", ptrDuration(livePostingDefaultStreamFreshness))
 	for _, msg := range msgs {
 		mt, err := msg.Timestamp.Parse()
 		if err != nil {
@@ -177,19 +189,19 @@ func (m modLivePosting) sendLivePost(username, displayName, title, game, preview
 			Name:    displayName,
 			IconURL: profileImage,
 		},
-		Color: 0x6441a5,
+		Color: livePostingTwitchColor,
 		Fields: []*discordgo.MessageEmbedField{
 			{Name: "Game", Value: game},
 		},
 		Image: &discordgo.MessageEmbedImage{
-			URL:    strings.NewReplacer("{width}", "320", "{height}", "180").Replace(previewImage),
+			URL:    strings.NewReplacer("{width}", strconv.Itoa(livePostingPreviewWidth), "{height}", strconv.Itoa(livePostingPreviewHeight)).Replace(previewImage),
-			Width:  320,
+			Width:  livePostingPreviewWidth,
-			Height: 180,
+			Height: livePostingPreviewHeight,
 		},
 		Thumbnail: &discordgo.MessageEmbedThumbnail{
 			URL:    profileImage,
-			Width:  300,
+			Width:  livePostingDiscordProfileWidth,
-			Height: 300,
+			Height: livePostingDiscordProfileHeight,
 		},
 		Title: title,
 		Type:  discordgo.EmbedTypeRich,

mod_liveRole.go

@@ -83,7 +83,7 @@ func (m modLiveRole) handlePresenceUpdate(d *discordgo.Session, p *discordgo.Pre
 		return
 	}
 
-	var exitFunc func(string, string, []string) error = m.removeLiveStreamerRole
+	var exitFunc func(string, string, []string) error
 	defer func() {
 		if exitFunc != nil {
 			if err := exitFunc(p.GuildID, p.User.ID, member.Roles); err != nil {

mod_presence.go

@@ -18,6 +18,10 @@ import (
  * @module_desc Updates the presence status of the bot to display the next stream
  */
 
+const (
+	presenceTimeDay = 24 * time.Hour
+)
+
 func init() {
 	RegisterModule("presence", func() module { return &modPresence{} })
 }
@@ -49,7 +53,7 @@ func (m *modPresence) Initialize(crontab *cron.Cron, discord *discordgo.Session,
 }
 
 func (m modPresence) cronUpdatePresence() {
-	var nextStream *time.Time = nil
+	var nextStream *time.Time
 
 	twitch := newTwitchAdapter(
 		// @attr twitch_client_id required string "" Twitch client ID the token was issued for
@@ -95,8 +99,8 @@ func (m modPresence) cronUpdatePresence() {
 
 func (m modPresence) durationToHumanReadable(d time.Duration) string {
 	d = time.Duration(math.Abs(float64(d)))
-	if d > time.Hour*24 {
+	if d > presenceTimeDay {
-		return fmt.Sprintf("%.0f Tagen", math.Round(float64(d)/float64(time.Hour*24)))
+		return fmt.Sprintf("%.0f Tagen", math.Round(float64(d)/float64(presenceTimeDay)))
 	}
 
 	var elements []string

mod_streamSchedule.go

@@ -17,9 +17,14 @@ import (
  * @module_desc Posts stream schedule derived from Twitch schedule as embed in Discord channel
  */
 
+const (
+	streamScheduleDefaultColor           = 0x2ECC71
+	streamScheduleNumberOfMessagesToLoad = 100
+)
+
 var (
-	defaultStreamScheduleEntries  = ptrInt64(5)
+	defaultStreamScheduleEntries  = ptrInt64(5)                   //nolint: gomnd // This is already the "constant"
-	defaultStreamSchedulePastTime = ptrDuration(15 * time.Minute)
+	defaultStreamSchedulePastTime = ptrDuration(15 * time.Minute) //nolint: gomnd // This is already the "constant"
 )
 
 func init() {
@@ -75,13 +80,13 @@ func (m modStreamSchedule) cronUpdateSchedule() {
 	}
 
 	msgEmbed := &discordgo.MessageEmbed{
-		// @attr embed_color optional int64 "3066993" Integer representation of the hex color for the embed (default is #2ECC71)
+		// @attr embed_color optional int64 "0x2ECC71" Integer representation of the hex color for the embed
-		Color: int(m.attrs.MustInt64("embed_color", ptrInt64(3066993))),
+		Color: int(m.attrs.MustInt64("embed_color", ptrInt64(streamScheduleDefaultColor))),
 		// @attr embed_description optional string "" Description for the embed block
 		Description: m.attrs.MustString("embed_description", ptrStringEmpty),
 		Fields:      []*discordgo.MessageEmbedField{},
 		Thumbnail: &discordgo.MessageEmbedThumbnail{
-			// @attr embed_thumbnail_url optional string "" Publically hosted image URL to use as thumbnail
+			// @attr embed_thumbnail_url optional string "" Publically hosted image URL to u100se as thumbnail
 			URL: m.attrs.MustString("embed_thumbnail_url", ptrStringEmpty),
 			// @attr embed_thumbnail_width optional int64 "" Width of the thumbnail
 			Width: int(m.attrs.MustInt64("embed_thumbnail_width", ptrInt64Zero)),
@@ -117,7 +122,7 @@ func (m modStreamSchedule) cronUpdateSchedule() {
 	}
 
 	// @attr discord_channel_id required string "" ID of the Discord channel to post the message to
-	msgs, err := m.discord.ChannelMessages(m.attrs.MustString("discord_channel_id", nil), 100, "", "", "")
+	msgs, err := m.discord.ChannelMessages(m.attrs.MustString("discord_channel_id", nil), streamScheduleNumberOfMessagesToLoad, "", "", "")
 	if err != nil {
 		log.WithError(err).Error("Unable to fetch announcement channel messages")
 		return

wiki/Home.md

@@ -77,10 +77,10 @@ Posts stream schedule derived from Twitch schedule as embed in Discord channel
 | `twitch_client_id` | ✅ | string |  | Twitch client ID the token was issued for |
 | `twitch_token` | ✅ | string |  | Token for the user the `twitch_channel_id` belongs to |
 | `cron` |  | string | `*/10 * * * *` | When to execute the schedule transfer |
-| `embed_color` |  | int64 | `3066993` | Integer representation of the hex color for the embed (default is #2ECC71) |
+| `embed_color` |  | int64 | `0x2ECC71` | Integer representation of the hex color for the embed |
 | `embed_description` |  | string |  | Description for the embed block |
 | `embed_thumbnail_height` |  | int64 |  | Height of the thumbnail |
-| `embed_thumbnail_url` |  | string |  | Publically hosted image URL to use as thumbnail |
+| `embed_thumbnail_url` |  | string |  | Publically hosted image URL to u100se as thumbnail |
 | `embed_thumbnail_width` |  | int64 |  | Width of the thumbnail |
 | `schedule_entries` |  | int64 | `5` | How many schedule entries to add to the embed as fields |
 | `schedule_past_time` |  | duration | `15m` | How long in the past should the schedule contain an entry |