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arikawa/api/interaction.go
2021-08-24 11:23:49 -07:00

281 lines
9.1 KiB
Go

package api
import (
"mime/multipart"
"strconv"
"github.com/pkg/errors"
"github.com/diamondburned/arikawa/v3/discord"
"github.com/diamondburned/arikawa/v3/utils/json/option"
"github.com/diamondburned/arikawa/v3/utils/sendpart"
)
var EndpointInteractions = Endpoint + "interactions/"
type InteractionResponseType uint
// https://discord.com/developers/docs/interactions/slash-commands#interaction-response-object-interaction-callback-type
const (
PongInteraction InteractionResponseType = iota + 1
_
_
MessageInteractionWithSource
DeferredMessageInteractionWithSource
DeferredMessageUpdate
UpdateMessage
)
// InteractionResponseFlags implements flags for an
// InteractionApplicationCommandCallbackData.
//
// https://discord.com/developers/docs/interactions/slash-commands#interaction-response-object-interaction-application-command-callback-data-flags
type InteractionResponseFlags uint
const EphemeralResponse InteractionResponseFlags = 64
type InteractionResponse struct {
Type InteractionResponseType `json:"type"`
Data *InteractionResponseData `json:"data,omitempty"`
}
// NeedsMultipart returns true if the InteractionResponse has files.
func (resp InteractionResponse) NeedsMultipart() bool {
return resp.Data != nil && resp.Data.NeedsMultipart()
}
func (resp InteractionResponse) WriteMultipart(body *multipart.Writer) error {
return sendpart.Write(body, resp, resp.Data.Files)
}
// InteractionResponseData is InteractionApplicationCommandCallbackData in the
// official documentation.
type InteractionResponseData struct {
// Content are the message contents (up to 2000 characters).
//
// Required: one of content, file, embeds
Content option.NullableString `json:"content,omitempty"`
// TTS is true if this is a TTS message.
TTS bool `json:"tts,omitempty"`
// Embeds contains embedded rich content.
//
// Required: one of content, file, embeds
Embeds *[]discord.Embed `json:"embeds,omitempty"`
// Components is the list of components (such as buttons) to be attached to
// the message.
Components *[]discord.Component `json:"components,omitempty"`
// AllowedMentions are the allowed mentions for the message.
AllowedMentions *AllowedMentions `json:"allowed_mentions,omitempty"`
// Flags are the interaction application command callback data flags.
Flags InteractionResponseFlags `json:"flags,omitempty"`
// Files represents a list of files to upload. This will not be
// JSON-encoded and will only be available through WriteMultipart.
Files []sendpart.File `json:"-"`
}
// NeedsMultipart returns true if the InteractionResponseData has files.
func (d InteractionResponseData) NeedsMultipart() bool {
return len(d.Files) > 0
}
func (d InteractionResponseData) WriteMultipart(body *multipart.Writer) error {
return sendpart.Write(body, d, d.Files)
}
// RespondInteraction responds to an incoming interaction. It is also known as
// an "interaction callback".
func (c *Client) RespondInteraction(
id discord.InteractionID, token string, resp InteractionResponse) error {
if resp.Data != nil {
if resp.Type == MessageInteractionWithSource {
// A new message is being created, make sure none of the fields
// are null or empty.
if (resp.Data.Content == nil || resp.Data.Content.Val == "") &&
(resp.Data.Embeds == nil || len(*resp.Data.Embeds) == 0) &&
len(resp.Data.Files) == 0 {
return ErrEmptyMessage
}
} else if resp.Type == UpdateMessage {
// A component is being updated. We therefore don't know what
// fields are filled. The only thing we can check is if content,
// embeds and files are null.
if (resp.Data.Content != nil && !resp.Data.Content.Init) &&
(resp.Data.Embeds != nil && *resp.Data.Embeds == nil) && len(resp.Data.Files) == 0 {
return ErrEmptyMessage
}
}
if resp.Data.AllowedMentions != nil {
if err := resp.Data.AllowedMentions.Verify(); err != nil {
return errors.Wrap(err, "allowedMentions error")
}
}
if resp.Data.Embeds != nil {
sum := 0
for i, embed := range *resp.Data.Embeds {
if err := embed.Validate(); err != nil {
return errors.Wrap(err, "embed error at "+strconv.Itoa(i))
}
sum += embed.Length()
if sum > 6000 {
return &discord.OverboundError{Count: sum, Max: 6000, Thing: "sum of all text in embeds"}
}
(*resp.Data.Embeds)[i] = embed // embed.Validate changes fields
}
}
}
var URL = EndpointInteractions + id.String() + "/" + token + "/callback"
return sendpart.POST(c.Client, resp, nil, URL)
}
// InteractionResponse returns the initial interaction response.
func (c *Client) InteractionResponse(
appID discord.AppID, token string) (*discord.Message, error) {
var m *discord.Message
return m, c.RequestJSON(
&m, "GET",
EndpointWebhooks+appID.String()+"/"+token+"/messages/@original")
}
type EditInteractionResponseData struct {
// Content are the new message contents (up to 2000 characters).
Content option.NullableString `json:"content,omitempty"`
// Embeds contains embedded rich content.
Embeds *[]discord.Embed `json:"embeds,omitempty"`
// Components contains the new components to attach.
Components *[]discord.Component `json:"components,omitempty"`
// AllowedMentions are the allowed mentions for the message.
AllowedMentions *AllowedMentions `json:"allowed_mentions,omitempty"`
// Attachments are the attached files to keep.
Attachments *[]discord.Attachment `json:"attachments,omitempty"`
// Files represents a list of files to upload. This will not be
// JSON-encoded and will only be available through WriteMultipart.
Files []sendpart.File `json:"-"`
}
// NeedsMultipart returns true if the SendMessageData has files.
func (data EditInteractionResponseData) NeedsMultipart() bool {
return len(data.Files) > 0
}
func (data EditInteractionResponseData) WriteMultipart(body *multipart.Writer) error {
return sendpart.Write(body, data, data.Files)
}
// EditInteractionResponse edits the initial Interaction response.
func (c *Client) EditInteractionResponse(
appID discord.AppID,
token string, data EditInteractionResponseData) (*discord.Message, error) {
if data.AllowedMentions != nil {
if err := data.AllowedMentions.Verify(); err != nil {
return nil, errors.Wrap(err, "allowedMentions error")
}
}
if data.Embeds != nil {
sum := 0
for i, e := range *data.Embeds {
if err := e.Validate(); err != nil {
return nil, errors.Wrap(err, "embed error")
}
sum += e.Length()
if sum > 6000 {
return nil, &discord.OverboundError{Count: sum, Max: 6000, Thing: "sum of text in embeds"}
}
(*data.Embeds)[i] = e // e.Validate changes fields
}
}
var msg *discord.Message
return msg, sendpart.PATCH(c.Client, data, &msg,
EndpointWebhooks+appID.String()+"/"+token+"/messages/@original")
}
// DeleteInteractionResponse deletes the initial interaction response.
func (c *Client) DeleteInteractionResponse(appID discord.AppID, token string) error {
return c.FastRequest("DELETE",
EndpointWebhooks+appID.String()+"/"+token+"/messages/@original")
}
// CreateInteractionFollowup creates a followup message for an interaction.
func (c *Client) CreateInteractionFollowup(
appID discord.AppID, token string, data InteractionResponseData) (*discord.Message, error) {
if (data.Content == nil || data.Content.Val == "") &&
(data.Embeds == nil || len(*data.Embeds) == 0) && len(data.Files) == 0 {
return nil, ErrEmptyMessage
}
if data.AllowedMentions != nil {
if err := data.AllowedMentions.Verify(); err != nil {
return nil, errors.Wrap(err, "allowedMentions error")
}
}
if data.Embeds != nil {
sum := 0
for i, embed := range *data.Embeds {
if err := embed.Validate(); err != nil {
return nil, errors.Wrap(err, "embed error at "+strconv.Itoa(i))
}
sum += embed.Length()
if sum > 6000 {
return nil, &discord.OverboundError{Count: sum, Max: 6000, Thing: "sum of all text in embeds"}
}
(*data.Embeds)[i] = embed // embed.Validate changes fields
}
}
var msg *discord.Message
return msg, sendpart.POST(
c.Client, data, msg, EndpointWebhooks+appID.String()+"/"+token+"?")
}
func (c *Client) EditInteractionFollowup(
appID discord.AppID, messageID discord.MessageID,
token string, data EditInteractionResponseData) (*discord.Message, error) {
if data.AllowedMentions != nil {
if err := data.AllowedMentions.Verify(); err != nil {
return nil, errors.Wrap(err, "allowedMentions error")
}
}
if data.Embeds != nil {
sum := 0
for i, e := range *data.Embeds {
if err := e.Validate(); err != nil {
return nil, errors.Wrap(err, "embed error")
}
sum += e.Length()
if sum > 6000 {
return nil, &discord.OverboundError{Count: sum, Max: 6000, Thing: "sum of text in embeds"}
}
(*data.Embeds)[i] = e // e.Validate changes fields
}
}
var msg *discord.Message
return msg, sendpart.PATCH(c.Client, data, &msg,
EndpointWebhooks+appID.String()+"/"+token+"/messages/"+messageID.String())
}
// DeleteInteractionFollowup deletes a followup message for an interaction.
func (c *Client) DeleteInteractionFollowup(
appID discord.AppID, messageID discord.MessageID, token string) error {
return c.FastRequest("DELETE",
EndpointWebhooks+appID.String()+"/"+token+"/messages/"+messageID.String())
}