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avatar.go
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/
avatar.go
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package main
import (
"errors"
"fmt"
"path/filepath"
)
var ErrNoAvatarURL = errors.New("chat: アバターのURLを取得できません。")
type Avatar interface {
// 指定されたクライアントのアバターのURLを返す。
// 問題が発生した場合はエラーを返す。特にURLを取得できなかった場合は
// ErrNoAvatarURLを返す。
AvatarURL(c *client) (string, error)
}
type AuthAvatar struct{}
var UseAuthAvatar AuthAvatar
func (AuthAvatar) AvatarURL(c *client) (string, error) {
if url, ok := c.userData["avatar_url"]; ok {
if urlStr, ok := url.(string); ok {
return urlStr, nil
}
}
return "", ErrNoAvatarURL
}
type GravatarAvatar struct{}
var UseGravatar GravatarAvatar
func (GravatarAvatar) AvatarURL(c *client) (string, error) {
if userid, ok := c.userData["userid"]; ok {
if useridStr, ok := userid.(string); ok {
return fmt.Sprintf("//www.gravatar.com/avatar/%x", useridStr), nil
}
}
return "", ErrNoAvatarURL
}
type FileSystemAvatar struct{}
var UseFileSystemAvatar FileSystemAvatar
func (FileSystemAvatar) AvatarURL(c *client) (string, error) {
userid, ok := c.userData["userid"]
if !ok {
return "", ErrNoAvatarURL
}
useridStr, ok := userid.(string)
if !ok {
return "", ErrNoAvatarURL
}
matches, err := filepath.Glob(filepath.Join("avatars", useridStr+"*"))
if err != nil || len(matches) == 0 {
return "", ErrNoAvatarURL
}
return "/" + matches[0], nil
}