fix refresh token read

configs/.env

@@ -2,11 +2,11 @@ APP_NAME='Event Migration Script'
 APP_VERSION=v0.0.1
 HTTP_PORT=8001
 
-GOOGLE_CREDENTIALS=
-REFRESH_TOKEN=
+GOOGLE_CREDENTIALS={"web":{"client_id":"15139215229-7olau25gs9jn1fuig1cgu8fpnrqegggr.apps.googleusercontent.com","project_id":"hiring-motion-test","auth_uri":"https://accounts.google.com/o/oauth2/auth","token_uri":"https://oauth2.googleapis.com/token","auth_provider_x509_cert_url":"https://www.googleapis.com/oauth2/v1/certs","client_secret":"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","redirect_uris":["http://localhost:8000/callback","https://developers.google.com/oauthplayground","https://oauth.pstmn.io/v1/callback","http://localhost:8001/api/auth/callback/google"],"javascript_origins":["http://localhost","http://localhost:3000","http://localhost:8001","http://localhost:3001","http://localhost:3002"]}}
+REFRESH_TOKEN=1//0440E8nsNXUl1CgYIARAAGAQSNwF-L9IrZVvkqWXMitsXeLrguGpEvMzdvUW9VQMAqJvifmjCo3ZjbgBRyVhRcNe7Knx6Nvr4yYg
 
-SOURCE_CALENDAR=
-DESTINATION_CALENDAR=
+SOURCE_CALENDAR=0e3a78f0ce9c0b300b2f60f1e1aa7ca593411a5c3ad9078cc07a07add50804f3@group.calendar.google.com
+DESTINATION_CALENDAR=c_5d1a220005718977e00c4fca7944ab09395271da10bd3cfe9d2cbc6046c9dcfa@group.calendar.google.com
 
 EVENT_TIME_MIN=
 EVENT_TIME_MAX=

google/token/token.go

@@ -1,7 +1,6 @@
 package token
 
 import (
-	"encoding/json"
 	"fmt"
 	"net/http"
 
@@ -11,44 +10,37 @@ import (
 	"golang.org/x/oauth2/google"
 )
 
-const (
-	GoogleCalendar = "calendar"
-)
-
 func NewClientFromEnv(ctx *gofr.Context, credentialEnvKey, tokenEnvKey string, scopes []string) (*http.Client, error) {
 	credentialData, err := readEnvValue(ctx, credentialEnvKey)
 	if err != nil {
 		return nil, err
 	}
 
-	tokenData, err := readEnvValue(ctx, tokenEnvKey)
-	if err != nil {
-		return nil, err
-	}
-
-	var token *oauth2.Token
+	credentialBytes := []byte(credentialData)
 
-	err = json.Unmarshal(tokenData, &token)
+	refreshToken, err := readEnvValue(ctx, tokenEnvKey)
 	if err != nil {
 		return nil, err
 	}
 
-	config, err := google.ConfigFromJSON(credentialData, scopes...)
+	token := &oauth2.Token{RefreshToken: refreshToken}
+
+	config, err := google.ConfigFromJSON(credentialBytes, scopes...)
 	if err != nil {
 		return nil, err
 	}
 
 	return config.Client(ctx, token), nil
 }
 
-func readEnvValue(ctx *gofr.Context, envKey string) ([]byte, error) {
+func readEnvValue(ctx *gofr.Context, envKey string) (string, error) {
 	value := ctx.Config.Get(envKey)
 	if value == "" {
-		return nil, &gofrErr.Response{
+		return "", &gofrErr.Response{
 			StatusCode: http.StatusInternalServerError,
 			Reason:     fmt.Sprintf("Unable to read %s from environment", envKey),
 		}
 	}
 
-	return []byte(value), nil
+	return value, nil
 }

readme.md

@@ -27,5 +27,3 @@ The script is setup to migrate events from first to last in chronological order.
 | BACKOFF_TIME         | Time to wait between retries.                                | No       |
 
 > Note: The `EVENT_TIME_MIN` and `EVENT_TIME_MAX` are in RFC3339 format. E.g.: `2023-08-10T21:27:37+05:30`
-
-> Example Refresh Token Value: "{"refresh_token": "{refreshToken}"}"