Refactor: Complete authentication flow changes

This commit includes the remaining files from the authentication flow refactoring.\nThese changes were part of the initial diff between c00ea67f31 and HEAD,\nand complete the transition to the new SSO and OAuth-based authentication mechanism.

internal/auth/credentials/credentials.go

@@ -3,15 +3,20 @@ package credentials
 import (
 	"fmt"
 	"os"
+	"path/filepath"
 
 	"github.com/joho/godotenv"
 )
 
 // LoadEnvCredentials loads credentials from .env file
 func LoadEnvCredentials() (email, password, domain string, err error) {
+	// Determine project root (assuming .env is in the project root)
+	projectRoot := "/home/sstent/Projects/go-garth"
+	envPath := filepath.Join(projectRoot, ".env")
+
 	// Load .env file
-	if err := godotenv.Load(); err != nil {
-		return "", "", "", fmt.Errorf("error loading .env file: %w", err)
+	if err := godotenv.Load(envPath); err != nil {
+		return "", "", "", fmt.Errorf("error loading .env file from %s: %w", envPath, err)
 	}
 
 	email = os.Getenv("GARMIN_EMAIL")
@@ -29,4 +34,4 @@ func LoadEnvCredentials() (email, password, domain string, err error) {
 	}
 
 	return email, password, domain, nil
-}
+}

internal/auth/oauth/oauth.go

@@ -15,13 +15,17 @@ import (
 
 // GetOAuth1Token retrieves an OAuth1 token using the provided ticket
 func GetOAuth1Token(domain, ticket string) (*types.OAuth1Token, error) {
+	scheme := "https"
+	if strings.HasPrefix(domain, "127.0.0.1") {
+		scheme = "http"
+	}
 	consumer, err := utils.LoadOAuthConsumer()
 	if err != nil {
 		return nil, fmt.Errorf("failed to load OAuth consumer: %w", err)
 	}
 
-	baseURL := fmt.Sprintf("https://connectapi.%s/oauth-service/oauth/", domain)
-	loginURL := fmt.Sprintf("https://sso.%s/sso/embed", domain)
+	baseURL := fmt.Sprintf("%s://connectapi.%s/oauth-service/oauth/", scheme, domain)
+	loginURL := fmt.Sprintf("%s://sso.%s/sso/embed", scheme, domain)
 	tokenURL := fmt.Sprintf("%spreauthorized?ticket=%s&login-url=%s&accepts-mfa-tokens=true",
 		baseURL, ticket, url.QueryEscape(loginURL))
 
@@ -91,12 +95,16 @@ func GetOAuth1Token(domain, ticket string) (*types.OAuth1Token, error) {
 
 // ExchangeToken exchanges an OAuth1 token for an OAuth2 token
 func ExchangeToken(oauth1Token *types.OAuth1Token) (*types.OAuth2Token, error) {
+	scheme := "https"
+	if strings.HasPrefix(oauth1Token.Domain, "127.0.0.1") {
+		scheme = "http"
+	}
 	consumer, err := utils.LoadOAuthConsumer()
 	if err != nil {
 		return nil, fmt.Errorf("failed to load OAuth consumer: %w", err)
 	}
 
-	exchangeURL := fmt.Sprintf("https://connectapi.%s/oauth-service/oauth/exchange/user/2.0", oauth1Token.Domain)
+	exchangeURL := fmt.Sprintf("%s://connectapi.%s/oauth-service/oauth/exchange/user/2.0", scheme, oauth1Token.Domain)
 
 	// Prepare form data
 	formData := url.Values{}
@@ -151,4 +159,4 @@ func ExchangeToken(oauth1Token *types.OAuth1Token) (*types.OAuth2Token, error) {
 	}
 
 	return &oauth2Token, nil
-}
+}

internal/auth/sso/sso.go

@@ -44,6 +44,11 @@ func NewClient(domain string) *Client {
 func (c *Client) Login(email, password string) (*types.OAuth2Token, *MFAContext, error) {
 	fmt.Printf("Logging in to Garmin Connect (%s) using SSO flow...\n", c.Domain)
 
+	scheme := "https"
+	if strings.HasPrefix(c.Domain, "127.0.0.1") {
+		scheme = "http"
+	}
+
 	// Step 1: Set up SSO parameters
 	ssoURL := fmt.Sprintf("https://sso.%s/sso", c.Domain)
 	ssoEmbedURL := fmt.Sprintf("%s/embed", ssoURL)
@@ -81,7 +86,7 @@ func (c *Client) Login(email, password string) (*types.OAuth2Token, *MFAContext,
 
 	// Step 3: Get signin page and CSRF token
 	fmt.Println("Getting signin page...")
-	signinURL := fmt.Sprintf("https://sso.%s/sso/signin?%s", c.Domain, signinParams.Encode())
+	signinURL := fmt.Sprintf("%s://sso.%s/sso/signin?%s", scheme, c.Domain, signinParams.Encode())
 	req, err = http.NewRequest("GET", signinURL, nil)
 	if err != nil {
 		return nil, nil, fmt.Errorf("failed to create signin request: %w", err)