Make embed title and therefore whole embed optional

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

helpers.go

@@ -20,6 +20,11 @@ func ptrTime(v time.Time) *time.Time             { return &v }
 
 //nolint:gocognit,gocyclo // This function compares two structs and needs the complexity
 func isDiscordMessageEmbedEqual(a, b *discordgo.MessageEmbed) bool {
+	if a == nil || b == nil {
+		// If one of them is nil, don't do the in-depth analysis
+		return a == b
+	}
+
 	checks := [][2]interface{}{
 		// Base-Struct
 		{a.Type, b.Type},

mod_reactionRole.go

@@ -5,12 +5,13 @@ import (
 	"strings"
 	"time"
 
-	"github.com/Luzifer/go_helpers/v2/env"
-	"github.com/Luzifer/go_helpers/v2/str"
 	"github.com/bwmarrin/discordgo"
 	"github.com/pkg/errors"
 	"github.com/robfig/cron/v3"
 	log "github.com/sirupsen/logrus"
+
+	"github.com/Luzifer/go_helpers/v2/env"
+	"github.com/Luzifer/go_helpers/v2/str"
 )
 
 /*
@@ -59,14 +60,16 @@ func (m modReactionRole) Setup() error {
 	// @attr content optional string "" Message content to post above the embed
 	contentString := m.attrs.MustString("content", ptrStringEmpty)
 
-	msgEmbed := &discordgo.MessageEmbed{
+	var msgEmbed *discordgo.MessageEmbed
+	// @attr embed_title optional string "" Title of the embed (embed will not be added when title is missing)
+	if title := m.attrs.MustString("embed_title", ptrStringEmpty); title != "" {
+		msgEmbed = &discordgo.MessageEmbed{
 			// @attr embed_color optional int64 "0x2ECC71" Integer / HEX representation of the color for the embed
 			Color: int(m.attrs.MustInt64("embed_color", ptrInt64(streamScheduleDefaultColor))),
 			// @attr embed_description optional string "" Description for the embed block
 			Description: strings.TrimSpace(m.attrs.MustString("embed_description", ptrStringEmpty)),
 			Timestamp:   time.Now().Format(time.RFC3339),
-		// @attr embed_title required string "" Title of the embed
+			Title:       title,
-		Title: m.attrs.MustString("embed_title", nil),
 			Type:        discordgo.EmbedTypeRich,
 		}
 
@@ -80,6 +83,7 @@ func (m modReactionRole) Setup() error {
 				Height: int(m.attrs.MustInt64("embed_thumbnail_height", ptrInt64Zero)),
 			}
 		}
+	}
 
 	reactionListRaw, err := m.attrs.StringSlice("reaction_roles")
 	if err != nil {

wiki/Home.md

@@ -121,7 +121,6 @@ Creates a post with pre-set reactions and assigns roles on reaction
 | Attribute | Req. | Type | Default Value | Description |
 | --------- | :--: | ---- | ------------- | ----------- |
 | `discord_channel_id` | ✅ | string |  | ID of the Discord channel to post the message to |
-| `embed_title` | ✅ | string |  | Title of the embed |
 | `reaction_roles` | ✅ | []string |  | List of strings in format `emote=role-id[:set]`. `emote` equals an unicode emote (✅) or a custom emote in form `:<emote-name>:<emote-id>`. `role-id` is the integer ID of the guilds role to add with this emote. If `:set` is added at the end, the role will only be added but not removed when the reaction is removed. |
 | `content` |  | string |  | Message content to post above the embed |
 | `embed_color` |  | int64 | `0x2ECC71` | Integer / HEX representation of the color for the embed |
@@ -129,6 +128,7 @@ Creates a post with pre-set reactions and assigns roles on reaction
 | `embed_thumbnail_height` |  | int64 |  | Height of the thumbnail |
 | `embed_thumbnail_url` |  | string |  | Publically hosted image URL to use as thumbnail |
 | `embed_thumbnail_width` |  | int64 |  | Width of the thumbnail |
+| `embed_title` |  | string |  | Title of the embed (embed will not be added when title is missing) |
 
 ## Type: `schedule`