Implement user provisioning for Nextcloud accounts and enhance WebDAV client handling

go_cloud/internal/storage/nextcloud.go

@@ -0,0 +1,77 @@
+package storage
+
+import (
+	"bytes"
+	"crypto/rand"
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+)
+
+// CreateNextcloudUser creates a new Nextcloud user account via OCS API
+func CreateNextcloudUser(nextcloudBaseURL, adminUser, adminPass, username, password string) error {
+	// Remove any path from base URL, we need just the scheme://host:port
+	baseURL := strings.Split(nextcloudBaseURL, "/remote.php")[0]
+	url := fmt.Sprintf("%s/ocs/v1.php/cloud/users", baseURL)
+
+	payload := map[string]string{
+		"userid":   username,
+		"password": password,
+	}
+
+	jsonData, err := json.Marshal(payload)
+	if err != nil {
+		return fmt.Errorf("failed to marshal payload: %w", err)
+	}
+
+	req, err := http.NewRequest("POST", url, bytes.NewBuffer(jsonData))
+	if err != nil {
+		return fmt.Errorf("failed to create request: %w", err)
+	}
+
+	req.SetBasicAuth(adminUser, adminPass)
+	req.Header.Set("OCS-APIRequest", "true")
+	req.Header.Set("Content-Type", "application/json")
+
+	client := &http.Client{}
+	resp, err := client.Do(req)
+	if err != nil {
+		return fmt.Errorf("failed to create user: %w", err)
+	}
+	defer resp.Body.Close()
+
+	body, _ := io.ReadAll(resp.Body)
+
+	// 200 = success, 409 = user already exists (which is fine)
+	if resp.StatusCode != 200 && resp.StatusCode != 409 {
+		return fmt.Errorf("failed to create Nextcloud user (status %d): %s", resp.StatusCode, string(body))
+	}
+
+	fmt.Printf("[NEXTCLOUD] Created user account: %s\n", username)
+	return nil
+}
+
+// GenerateSecurePassword generates a random secure password
+func GenerateSecurePassword(length int) (string, error) {
+	bytes := make([]byte, length)
+	if _, err := rand.Read(bytes); err != nil {
+		return "", err
+	}
+	return base64.URLEncoding.EncodeToString(bytes)[:length], nil
+}
+
+// NewUserWebDAVClient creates a WebDAV client for a specific user
+func NewUserWebDAVClient(nextcloudBaseURL, username, password string) *WebDAVClient {
+	baseURL := fmt.Sprintf("%s/remote.php/dav/files/%s", nextcloudBaseURL, username)
+
+	return &WebDAVClient{
+		baseURL:    baseURL,
+		user:       username,
+		pass:       password,
+		basePrefix: "/",
+		httpClient: &http.Client{},
+	}
+}