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arikawa/api/message_send.go

123 lines
2.7 KiB
Go

package api
import (
"io"
"mime/multipart"
"strconv"
"strings"
"github.com/diamondburned/arikawa/discord"
"github.com/diamondburned/arikawa/internal/httputil"
"github.com/diamondburned/arikawa/internal/json"
"github.com/pkg/errors"
)
func (c *Client) SendMessageComplex(
channelID discord.Snowflake,
data SendMessageData) (*discord.Message, error) {
if data.Embed != nil {
if err := data.Embed.Validate(); err != nil {
return nil, errors.Wrap(err, "Embed error")
}
}
var URL = EndpointChannels + channelID.String() + "/messages"
var msg *discord.Message
if len(data.Files) == 0 {
// No files, so no need for streaming.
return msg, c.RequestJSON(&msg, "POST", URL,
httputil.WithJSONBody(c, data))
}
writer := func(mw *multipart.Writer) error {
return data.WriteMultipart(c, mw)
}
resp, err := c.MeanwhileMultipart(writer, "POST", URL)
if err != nil {
return nil, err
}
defer resp.Body.Close()
return msg, c.DecodeStream(resp.Body, &msg)
}
const AttachmentSpoilerPrefix = "SPOILER_"
var quoteEscaper = strings.NewReplacer(`\`, `\\`, `"`, `\"`)
type SendMessageFile struct {
Name string
Reader io.Reader
}
type SendMessageData struct {
Content string `json:"content,omitempty"`
Nonce string `json:"nonce,omitempty"`
TTS bool `json:"tts"`
Embed *discord.Embed `json:"embed,omitempty"`
Files []SendMessageFile `json:"-"`
}
func (data *SendMessageData) WriteMultipart(
c json.Driver, body *multipart.Writer) error {
return writeMultipart(c, body, data, data.Files)
}
type ExecuteWebhookData struct {
Content string `json:"content,omitempty"`
Nonce string `json:"nonce,omitempty"`
TTS bool `json:"tts"`
Embeds []discord.Embed `json:"embeds,omitempty"`
Files []SendMessageFile `json:"-"`
Username string `json:"username,omitempty"`
AvatarURL discord.URL `json:"avatar_url,omitempty"`
}
func (data *ExecuteWebhookData) WriteMultipart(
c json.Driver, body *multipart.Writer) error {
return writeMultipart(c, body, data, data.Files)
}
func writeMultipart(
c json.Driver, body *multipart.Writer,
item interface{}, files []SendMessageFile) error {
defer body.Close()
// Encode the JSON body first
w, err := body.CreateFormField("payload_json")
if err != nil {
return errors.Wrap(err, "Failed to create bodypart for JSON")
}
if err := c.EncodeStream(w, item); err != nil {
return errors.Wrap(err, "Failed to encode JSON")
}
for i, file := range files {
num := strconv.Itoa(i)
w, err := body.CreateFormFile("file"+num, file.Name)
if err != nil {
return errors.Wrap(err, "Failed to create bodypart for "+num)
}
if _, err := io.Copy(w, file.Reader); err != nil {
return errors.Wrap(err, "Failed to write for file "+num)
}
}
return nil
}