First commit

overleaf.go

@@ -3,12 +3,10 @@ package main
 import (
 	"bytes"
 	"fmt"
-	"io"
 	"log"
 	"net/http"
 	"net/http/cookiejar"
 	"net/url"
-	"strings"
 
 	"github.com/PuerkitoBio/goquery"
 )
@@ -19,135 +17,121 @@ type Overleaf struct {
 	CSRF    string
 }
 
-// NewOverleaf initializes a new Overleaf instance with a cookie jar
+// NewOverleaf initializes a new Overleaf instance with a cookie jar for session management
 func NewOverleaf(baseURL string) *Overleaf {
-	jar, _ := cookiejar.New(nil) // Initialize cookie jar
+	jar, _ := cookiejar.New(nil)
 	client := &http.Client{
-		Jar: jar, // Attach cookie jar to client
+		Jar: jar,
 	}
-
 	return &Overleaf{
-		BaseURL: strings.TrimSuffix(baseURL, "/"),
+		BaseURL: baseURL,
 		Client:  client,
 	}
 }
 
-// logCookies logs cookies stored in the client's cookie jar for a given endpoint
-func logCookies(client *http.Client, endpoint string) {
-	u, _ := url.Parse(endpoint)
-	cookies := client.Jar.Cookies(u)
-	for _, cookie := range cookies {
-		log.Printf("Cookie for %s: %s=%s", endpoint, cookie.Name, cookie.Value)
-	}
-}
-
-// get performs a GET request
+// get performs a GET request and returns the HTTP response
 func (o *Overleaf) get(endpoint string) (*http.Response, error) {
-	url := fmt.Sprintf("%s%s", o.BaseURL, endpoint)
-	resp, err := o.Client.Get(url)
-	if err == nil {
-		logCookies(o.Client, url) // Log cookies after GET request
+	fullURL := fmt.Sprintf("%s%s", o.BaseURL, endpoint)
+	resp, err := o.Client.Get(fullURL)
+	if err != nil {
+		return nil, fmt.Errorf("GET request failed: %v", err)
 	}
-	return resp, err
+	return resp, nil
 }
 
-// post performs a POST request
+// post performs a POST request with form data
 func (o *Overleaf) post(endpoint string, data map[string]string) (*http.Response, error) {
-	url := fmt.Sprintf("%s%s", o.BaseURL, endpoint)
-	data["_csrf"] = o.CSRF
-	formData := encodeFormData(data)
+	fullURL := fmt.Sprintf("%s%s", o.BaseURL, endpoint)
 
-	req, err := http.NewRequest("POST", url, bytes.NewBufferString(formData))
+	// Encode form data using url.Values
+	formData := url.Values{}
+	for key, value := range data {
+		formData.Set(key, value)
+	}
+
+	req, err := http.NewRequest("POST", fullURL, bytes.NewBufferString(formData.Encode()))
 	if err != nil {
-		return nil, fmt.Errorf("failed to create POST request: %v", err)
+		return nil, fmt.Errorf("POST request creation failed: %v", err)
 	}
 	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
 
 	resp, err := o.Client.Do(req)
-	if err == nil {
-		logCookies(o.Client, url) // Log cookies after POST request
+	if err != nil {
+		return nil, fmt.Errorf("POST request failed: %v", err)
 	}
-	return resp, err
+	return resp, nil
 }
 
-// obtainCSRF retrieves the CSRF token
-func (o *Overleaf) obtainCSRF() error {
-	resp, err := o.get("/login")
+// obtainCSRF fetches the CSRF token from the specified endpoint
+func (o *Overleaf) obtainCSRF(endpoint string) error {
+	resp, err := o.get(endpoint)
 	if err != nil {
-		return fmt.Errorf("failed to load login page: %v", err)
+		return fmt.Errorf("failed to fetch page for CSRF token: %v", err)
 	}
 	defer resp.Body.Close()
 
+	// Parse the HTML to extract the CSRF token
 	doc, err := goquery.NewDocumentFromReader(resp.Body)
 	if err != nil {
-		return fmt.Errorf("failed to parse login page HTML: %v", err)
+		return fmt.Errorf("failed to parse HTML: %v", err)
 	}
 
 	csrf, exists := doc.Find(`meta[name="ol-csrfToken"]`).Attr("content")
 	if !exists {
-		return fmt.Errorf("CSRF token not found in login page")
+		return fmt.Errorf("CSRF token not found")
 	}
-
 	o.CSRF = csrf
-	log.Printf("Obtained CSRF token: %s", o.CSRF)
+	log.Printf("Obtained CSRF token: %s", csrf)
 	return nil
 }
 
-// Login authenticates as admin
+// Login logs in as an admin and saves the session
 func (o *Overleaf) Login(email, password string) error {
-	if err := o.obtainCSRF(); err != nil {
+	// Fetch the login page to get the CSRF token
+	if err := o.obtainCSRF("/login"); err != nil {
 		return fmt.Errorf("failed to obtain CSRF token: %v", err)
 	}
 
+	// Send login request
 	resp, err := o.post("/login", map[string]string{
 		"email":    email,
 		"password": password,
+		"_csrf":    o.CSRF,
 	})
 	if err != nil {
-		return fmt.Errorf("failed to send login request: %v", err)
+		return fmt.Errorf("login request failed: %v", err)
 	}
 	defer resp.Body.Close()
 
 	if resp.StatusCode != http.StatusOK {
-		body, _ := io.ReadAll(resp.Body)
-		log.Printf("Login response: %s", string(body))
-		return fmt.Errorf("admin login returned status %d: %s", resp.StatusCode, string(body))
+		return fmt.Errorf("login failed with status code: %d", resp.StatusCode)
 	}
 
 	log.Println("Admin login successful.")
 	return nil
 }
 
-// RegisterUser registers a new user
+// RegisterUser registers a new user using the admin session
 func (o *Overleaf) RegisterUser(email string) error {
-	log.Printf("Attempting to register user with email: %s", email)
-	log.Printf("Using CSRF token: %s", o.CSRF)
+	// Fetch the admin registration page to get the CSRF token
+	if err := o.obtainCSRF("/admin/register"); err != nil {
+		return fmt.Errorf("failed to obtain CSRF token for registration: %v", err)
+	}
 
+	// Send user registration request
 	resp, err := o.post("/admin/register", map[string]string{
 		"email": email,
+		"_csrf": o.CSRF,
 	})
 	if err != nil {
-		return fmt.Errorf("failed to send register request: %v", err)
+		return fmt.Errorf("registration request failed: %v", err)
 	}
 	defer resp.Body.Close()
 
-	// Log response for debugging
-	body, _ := io.ReadAll(resp.Body)
-	log.Printf("Register user response: %s", string(body))
-
 	if resp.StatusCode != http.StatusOK {
-		return fmt.Errorf("register user returned status %d: %s", resp.StatusCode, string(body))
+		return fmt.Errorf("user registration failed with status code: %d", resp.StatusCode)
 	}
 
 	log.Println("User registered successfully.")
 	return nil
 }
-
-// encodeFormData encodes a map into x-www-form-urlencoded format
-func encodeFormData(data map[string]string) string {
-	var formData []string
-	for key, value := range data {
-		formData = append(formData, fmt.Sprintf("%s=%s", key, value))
-	}
-	return strings.Join(formData, "&")
-}