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util.go
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/
util.go
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package discordgo
import (
"bytes"
"encoding/json"
"fmt"
"io"
"mime/multipart"
"net/textproto"
"strconv"
"time"
)
// SnowflakeTimestamp returns the creation time of a Snowflake ID relative to the creation of Discord.
func SnowflakeTimestamp(ID string) (t time.Time, err error) {
i, err := strconv.ParseInt(ID, 10, 64)
if err != nil {
return
}
timestamp := (i >> 22) + 1420070400000
t = time.Unix(0, timestamp*1000000)
return
}
// MultipartBodyWithJSON returns the contentType and body for a discord request
// data : The object to encode for payload_json in the multipart request
// files : Files to include in the request
func MultipartBodyWithJSON(data interface{}, files []*File) (requestContentType string, requestBody []byte, err error) {
body := &bytes.Buffer{}
bodywriter := multipart.NewWriter(body)
payload, err := json.Marshal(data)
if err != nil {
return
}
var p io.Writer
h := make(textproto.MIMEHeader)
h.Set("Content-Disposition", `form-data; name="payload_json"`)
h.Set("Content-Type", "application/json")
p, err = bodywriter.CreatePart(h)
if err != nil {
return
}
if _, err = p.Write(payload); err != nil {
return
}
for i, file := range files {
h := make(textproto.MIMEHeader)
h.Set("Content-Disposition", fmt.Sprintf(`form-data; name="file%d"; filename="%s"`, i, quoteEscaper.Replace(file.Name)))
contentType := file.ContentType
if contentType == "" {
contentType = "application/octet-stream"
}
h.Set("Content-Type", contentType)
p, err = bodywriter.CreatePart(h)
if err != nil {
return
}
if _, err = io.Copy(p, file.Reader); err != nil {
return
}
}
err = bodywriter.Close()
if err != nil {
return
}
return bodywriter.FormDataContentType(), body.Bytes(), nil
}