linkinfo/twitter.go

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package linkinfo
import (
"github.com/dghubble/go-twitter/twitter"
"github.com/dghubble/oauth1"
"regexp"
"strconv"
)
var (
twitterHosts = []string{"twitter.com"}
twitterStatusRegexp = regexp.MustCompile("/status/(\\d+)")
)
type TwitterOptions struct {
Option
ConsumerKey string
ConsumerSecret string
Token string
TokenSecret string
}
type TwitterInfoApi struct {
opts *TwitterOptions
client *twitter.Client
}
func (i *TwitterInfoApi) Init() {
config := oauth1.NewConfig(i.opts.ConsumerKey, i.opts.ConsumerSecret)
token := oauth1.NewToken(i.opts.Token, i.opts.TokenSecret)
i.client = twitter.NewClient(config.Client(oauth1.NoContext, token))
}
func (i *TwitterInfoApi) Handler(link string) (*LinkInfo, error) {
m := twitterStatusRegexp.FindStringSubmatch(link)
if m == nil {
return nil, nil
}
id, err := strconv.ParseInt(m[1], 10, 64)
if err != nil {
return nil, err
}
tweet, _, err := i.client.Statuses.Show(id, nil)
if err != nil {
return nil, err
}
ret := &LinkInfo{
Title: tweet.User.Name + " on Twitter: " + tweet.Text,
Description: tweet.Text,
}
return ret, nil
}