mirror of
https://github.com/diamondburned/arikawa.git
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6aefc34992
Also added some useful comments in relevant files and moved OverboundError to discord.go. See https://discord.com/developers/docs/resources/channel#embed-object-embed-video-structure
235 lines
5.4 KiB
Go
235 lines
5.4 KiB
Go
package discord
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import (
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"fmt"
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"strconv"
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)
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// Color describes an RGB color (with NO alpha). If a value is -1, then it's
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// marshaled to JSON as null.
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type Color int32
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// DefaultEmbedColor is the default color to use for an embed.
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var DefaultEmbedColor Color = 0x303030
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// NullColor is a Color that's marshaled to null.
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const NullColor Color = -1
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// Uint32 returns the color as a Uint32. If the color is null, then 0 is
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// returned.
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func (c Color) Uint32() uint32 {
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if c == NullColor {
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return 0
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}
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return uint32(c)
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}
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// Int converts Color to int.
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func (c Color) Int() int {
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return int(c)
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}
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// RGB splits Color into red, green, and blue. The maximum value is 255.
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func (c Color) RGB() (uint8, uint8, uint8) {
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var (
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color = c.Uint32()
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r = uint8((color >> 16) & 255)
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g = uint8((color >> 8) & 255)
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b = uint8(color & 255)
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)
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return r, g, b
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}
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// String returns the Color in hexadecimal (#FFFFFF) format.
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func (c Color) String() string {
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r, g, b := c.RGB()
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return fmt.Sprintf("#%02X%02X%02X", r, g, b)
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}
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func (c Color) MarshalJSON() ([]byte, error) {
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if c < 0 {
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return []byte("null"), nil
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}
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return []byte(strconv.Itoa(c.Int())), nil
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}
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func (c *Color) UnmarshalJSON(json []byte) error {
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s := string(json)
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if s == "null" {
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*c = NullColor
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return nil
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}
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v, err := strconv.ParseInt(s, 10, 32)
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*c = Color(v)
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return err
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}
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// Embed describes a box with a left colored border that sometimes appears in
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// messages.
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type Embed struct {
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Title string `json:"title,omitempty"`
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Type EmbedType `json:"type,omitempty"`
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Description string `json:"description,omitempty"`
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URL URL `json:"url,omitempty"`
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Timestamp Timestamp `json:"timestamp,omitempty"`
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Color Color `json:"color,omitempty"`
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Footer *EmbedFooter `json:"footer,omitempty"`
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Image *EmbedImage `json:"image,omitempty"`
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Thumbnail *EmbedThumbnail `json:"thumbnail,omitempty"`
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Video *EmbedVideo `json:"video,omitempty"`
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Provider *EmbedProvider `json:"provider,omitempty"`
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Author *EmbedAuthor `json:"author,omitempty"`
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Fields []EmbedField `json:"fields,omitempty"`
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}
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// NewEmbed creates a normal embed with default values.
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func NewEmbed() *Embed {
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return &Embed{
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Type: NormalEmbed,
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Color: DefaultEmbedColor,
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}
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}
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// Validate validates the embed.
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func (e *Embed) Validate() error {
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if e.Type == "" {
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e.Type = NormalEmbed
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}
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if e.Color == 0 {
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e.Color = DefaultEmbedColor
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}
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if len(e.Title) > 256 {
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return &OverboundError{len(e.Title), 256, "title"}
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}
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if len(e.Description) > 4096 {
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return &OverboundError{len(e.Description), 4096, "description"}
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}
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if len(e.Fields) > 25 {
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return &OverboundError{len(e.Fields), 25, "fields"}
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}
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if e.Footer != nil {
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if len(e.Footer.Text) > 2048 {
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return &OverboundError{len(e.Footer.Text), 2048, "footer text"}
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}
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}
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if e.Author != nil {
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if len(e.Author.Name) > 256 {
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return &OverboundError{len(e.Author.Name), 256, "author name"}
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}
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}
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for i, field := range e.Fields {
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if len(field.Name) > 256 {
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return &OverboundError{len(field.Name), 256,
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fmt.Sprintf("field %d name", i)}
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}
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if len(field.Value) > 1024 {
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return &OverboundError{len(field.Value), 1024,
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fmt.Sprintf("field %d value", i)}
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}
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}
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if sum := e.Length(); sum > 6000 {
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return &OverboundError{sum, 6000, "sum of all characters"}
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}
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return nil
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}
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// Length returns the sum of the lengths of all text in the embed.
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func (e Embed) Length() int {
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var sum = 0 +
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len(e.Title) +
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len(e.Description)
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if e.Footer != nil {
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sum += len(e.Footer.Text)
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}
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if e.Author != nil {
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sum += len(e.Author.Name)
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}
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for _, field := range e.Fields {
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sum += len(field.Name) + len(field.Value)
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}
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return sum
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}
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// EmbedTypes are "loosely defined" and, for the most part, are not used by our
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// clients for rendering. Embed attributes power what is rendered.
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//
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// Deprecated: Embed types should be considered deprecated and might be removed
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// in a future API version.
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type EmbedType string
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// Embed type constants.
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const (
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NormalEmbed EmbedType = "rich"
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ImageEmbed EmbedType = "image"
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VideoEmbed EmbedType = "video"
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GIFVEmbed EmbedType = "gifv"
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ArticleEmbed EmbedType = "article"
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LinkEmbed EmbedType = "link"
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)
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// EmbedFooter is the footer of an embed.
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type EmbedFooter struct {
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Text string `json:"text"`
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Icon URL `json:"icon_url,omitempty"`
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ProxyIcon URL `json:"proxy_icon_url,omitempty"`
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}
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// EmbedImage is the large image of an embed.
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type EmbedImage struct {
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URL URL `json:"url"`
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Proxy URL `json:"proxy_url"`
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Height uint `json:"height,omitempty"`
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Width uint `json:"width,omitempty"`
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}
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// EmbedThumbnail is the small image of an embed. It often appears on the right.
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type EmbedThumbnail struct {
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URL URL `json:"url,omitempty"`
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Proxy URL `json:"proxy_url,omitempty"`
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Height uint `json:"height,omitempty"`
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Width uint `json:"width,omitempty"`
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}
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// EmbedVideo is the video of an embed.
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type EmbedVideo struct {
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URL URL `json:"url"`
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Proxy URL `json:"proxy_url,omitempty"`
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Height uint `json:"height"`
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Width uint `json:"width"`
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}
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type EmbedProvider struct {
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Name string `json:"name"`
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URL URL `json:"url"`
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}
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type EmbedAuthor struct {
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Name string `json:"name,omitempty"`
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URL URL `json:"url,omitempty"`
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Icon URL `json:"icon_url,omitempty"`
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ProxyIcon URL `json:"proxy_icon_url,omitempty"`
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}
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type EmbedField struct {
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Name string `json:"name"`
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Value string `json:"value"`
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Inline bool `json:"inline,omitempty"`
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}
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