forked from hugozhu/godingtalk
/
ding_calendar.go
171 lines (154 loc) · 4.4 KB
/
ding_calendar.go
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package main
import (
"encoding/json"
"fmt"
"io/ioutil"
"log"
"net/http"
"os"
"time"
dd "github.com/go-codes/godingtalk"
"golang.org/x/net/context"
"golang.org/x/oauth2"
"golang.org/x/oauth2/google"
calendar "google.golang.org/api/calendar/v3"
)
var c *dd.DingTalkClient
var calendarId string
var staffId string
var timezone string
func init() {
c = dd.NewDingTalkClient(os.Getenv("corpid"), os.Getenv("corpsecret"))
calendarId = os.Getenv("calendar_id")
staffId = os.Getenv("staff_id")
timezone = os.Getenv("timezone")
if timezone == "" {
timezone = "Asia/Shanghai"
}
err := c.RefreshAccessToken()
if err != nil {
panic(err)
}
}
// Retrieve a token, saves the token, then returns the generated client.
func getClient(config *oauth2.Config) *http.Client {
// The file token.json stores the user's access and refresh tokens, and is
// created automatically when the authorization flow completes for the first
// time.
tokFile := "token.json"
tok, err := tokenFromFile(tokFile)
if err != nil {
tok = getTokenFromWeb(config)
saveToken(tokFile, tok)
}
return config.Client(context.Background(), tok)
}
// Request a token from the web, then returns the retrieved token.
func getTokenFromWeb(config *oauth2.Config) *oauth2.Token {
authURL := config.AuthCodeURL("state-token", oauth2.AccessTypeOffline)
fmt.Printf("Go to the following link in your browser then type the "+
"authorization code: \n%v\n", authURL)
var authCode string
if _, err := fmt.Scan(&authCode); err != nil {
log.Fatalf("Unable to read authorization code: %v", err)
}
tok, err := config.Exchange(context.TODO(), authCode)
if err != nil {
log.Fatalf("Unable to retrieve token from web: %v", err)
}
return tok
}
// Retrieves a token from a local file.
func tokenFromFile(file string) (*oauth2.Token, error) {
f, err := os.Open(file)
if err != nil {
return nil, err
}
defer f.Close()
tok := &oauth2.Token{}
err = json.NewDecoder(f).Decode(tok)
return tok, err
}
// Saves a token to a file path.
func saveToken(path string, token *oauth2.Token) {
fmt.Printf("Saving credential file to: %s\n", path)
f, err := os.OpenFile(path, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0600)
if err != nil {
log.Fatalf("Unable to cache oauth token: %v", err)
}
defer f.Close()
json.NewEncoder(f).Encode(token)
}
func eventsFromFile(file string) (map[string]dd.Event, error) {
f, err := os.Open(file)
if err != nil {
return nil, err
}
defer f.Close()
var cache map[string]dd.Event
err = json.NewDecoder(f).Decode(&cache)
return cache, err
}
func saveEvents(path string, cache map[string]dd.Event) {
fmt.Printf("Saving events map to: %s\n", path)
f, err := os.OpenFile(path, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0600)
if err != nil {
log.Fatalf("Unable to cache oauth token: %v", err)
}
defer f.Close()
json.NewEncoder(f).Encode(cache)
}
func main() {
b, err := ioutil.ReadFile("credentials.json")
if err != nil {
log.Fatalf("Unable to read client secret file: %v", err)
}
// If modifying these scopes, delete your previously saved token.json.
config, err := google.ConfigFromJSON(b, calendar.CalendarScope)
if err != nil {
log.Fatalf("Unable to parse client secret file to config: %v", err)
}
client := getClient(config)
srv, err := calendar.New(client)
if err != nil {
log.Fatalf("Unable to retrieve Calendar client: %v", err)
}
from := time.Now()
to := time.Now().AddDate(0, 0, 1)
log.Println(from.Format("2006-01-02") + " " + to.Format("2006-01-02"))
events, _ := c.ListEvents(staffId, from, to)
cache, _ := eventsFromFile("events.json")
if cache == nil {
cache = make(map[string]dd.Event)
}
for _, event := range events {
log.Println(event.Summary)
reminders := &calendar.EventReminders{
UseDefault: true,
}
if _, exist := cache[event.Id]; !exist {
googleEvent := &calendar.Event{
Summary: event.Summary,
Location: event.Location,
Description: event.Description,
Start: &calendar.EventDateTime{
DateTime: event.Start.DateTime,
TimeZone: timezone,
},
End: &calendar.EventDateTime{
DateTime: event.End.DateTime,
TimeZone: timezone,
},
Reminders: reminders,
}
cache[event.Id] = event
// log.Println(srv, googleEvent)
googleEvent, err = srv.Events.Insert(calendarId, googleEvent).Do()
if err != nil {
log.Fatalf("Unable to create event. %v\n", err)
}
fmt.Printf("Event created: %s\n", googleEvent.HtmlLink)
}
}
saveEvents("events.json", cache)
}