/
common.go
103 lines (91 loc) · 2.23 KB
/
common.go
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package main
import (
"context"
"encoding/json"
"fmt"
"github.com/zeebo/errs/v2"
"golang.org/x/oauth2"
"golang.org/x/oauth2/google"
"google.golang.org/api/calendar/v3"
"io/ioutil"
"log"
"os/user"
"path"
"strings"
"time"
)
type BarItem struct {
Text string `json:"text,omitempty"`
Alt string `json:"alt,omitempty"`
Tooltip string `json:"tooltip,omitempty"`
}
func readToken(dir string) (*oauth2.Token, error) {
t := &oauth2.Token{}
content, err := ioutil.ReadFile(path.Join(dir, "token.json"))
if err != nil {
return t, errs.Wrap(err)
}
err = json.Unmarshal(content, t)
if err != nil {
return t, errs.Wrap(err)
}
return t, nil
}
func readCredentials(configDir string) (*oauth2.Config, error) {
credentialFile := path.Join(configDir, "credentials.json")
content, err := ioutil.ReadFile(credentialFile)
if err != nil {
return nil, errs.Errorf("Couldn't read credentials file from %s: %v", credentialFile, err)
}
config, err := google.ConfigFromJSON(content, calendar.CalendarReadonlyScope)
if err != nil {
log.Fatalf("Couldn't parse configuration: %v", err)
}
return config, nil
}
func setup(configDir string) (err error) {
config, err := readCredentials(configDir)
if err != nil {
return errs.Wrap(err)
}
ctx := context.Background()
token, _ := readToken(configDir)
token.Expiry = time.Now().Add(-time.Hour)
if !token.Valid() {
if token.RefreshToken != "" {
token, err = config.TokenSource(ctx, token).Token()
if err != nil {
fmt.Println(err)
}
}
if !token.Valid() {
fmt.Println(config.AuthCodeURL("no-state", oauth2.AccessTypeOffline))
var authCode string
if _, err := fmt.Scan(&authCode); err != nil {
return errs.Wrap(err)
}
token, err := config.Exchange(ctx, authCode)
if err != nil {
if _, err := fmt.Scan(&authCode); err != nil {
return errs.Wrap(err)
}
}
tokenBytes, err := json.Marshal(token)
if err != nil {
return errs.Wrap(err)
}
err = ioutil.WriteFile(path.Join(configDir, "token.json"), tokenBytes, 0600)
if err != nil {
return errs.Wrap(err)
}
}
}
return nil
}
func getConfigDir(dir string) string {
user, err := user.Current()
if err != nil {
return dir
}
return strings.ReplaceAll(dir, "${HOME}", user.HomeDir)
}