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slackutils.go
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/
slackutils.go
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package main
import (
"os"
"github.com/bfontaine/stargazer/Godeps/_workspace/src/github.com/nlopes/slack"
)
var slackParams = slack.NewPostMessageParameters()
var slackInfo *slack.Info
func init() {
slackParams.AsUser = true
slackParams.LinkNames = 1
slackParams.UnfurlLinks = true
}
type stringGetter func(string) (string, error)
var getUsername, getChannel stringGetter
func init() {
if os.Getenv("STARGAZER_TESTING") != "" {
getUsername = func(id string) (string, error) {
return "username" + id, nil
}
getChannel = func(id string) (string, error) {
return "channel" + id, nil
}
return
}
getUsername = memoizeGetter(func(id string) (string, error) {
u, err := api.GetUserInfo(id)
if err != nil {
return "", err
}
return u.Name, nil
})
getChannel = memoizeGetter(func(id string) (string, error) {
c, err := api.GetChannelInfo(id)
if err != nil {
return "", err
}
return c.Name, nil
})
}
func memoizeGetter(f stringGetter) stringGetter {
cache := make(map[string]string)
return func(s string) (string, error) {
if m, ok := cache[s]; ok {
return m, nil
}
m, err := f(s)
if err == nil {
cache[s] = m
}
return m, err
}
}