go: Implement basic embed creator

GoBot/embed.go

@@ -0,0 +1,44 @@
+package main
+
+import "github.com/bwmarrin/discordgo"
+
+type embed struct {
+	*discordgo.MessageEmbed
+}
+
+func newEmbed() *embed {
+	return &embed{&discordgo.MessageEmbed{}}
+}
+
+func (e *embed) Errorify() *embed {
+	e.Color = 0xE00000
+	e.Title = "发生错误！An error has occurred!"
+	return e
+}
+
+func (e *embed) SetTitle(title string) *embed {
+	e.Title = title
+	return e
+}
+
+func (e *embed) SetColour(colour int) *embed {
+	e.Color = colour
+	return e
+}
+
+func (e *embed) SetDescription(description string) *embed {
+	e.Description = description
+	return e
+}
+
+func (e *embed) AddField(name, value string) *embed {
+	e.Fields = append(e.Fields, &discordgo.MessageEmbedField{
+		Name:  name,
+		Value: value,
+	})
+	return e
+}
+
+func (e *embed) Build() *discordgo.MessageEmbed {
+	return e.MessageEmbed
+}