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feat: implement Update/Delete APIs with enhanced security (#107) (#119)
This PR completes Issue #107 by implementing PUT and DELETE endpoints for the /api/gists/[id] route with comprehensive security features and API test refactoring. ## Key Features ### DELETE Endpoint - Dual authentication methods: - One-time view gists: metadata proof validation (SHA-256 hash) - PIN-protected gists: PIN validation via X-Edit-Password header - CSRF protection on all state-changing endpoints - Fixed race condition by moving auto-deletion to explicit DELETE endpoint ### PUT Endpoint - Multipart form data support for gist updates - PIN validation for protected gists - Optimistic locking to prevent concurrent update conflicts - Support for updating encrypted user metadata and editor preferences ### Security Enhancements - Created reusable CSRF validation in lib/security.ts - Converted all crypto operations to WebCrypto API for edge runtime - Added comprehensive schema validation using Zod - Proper error handling with typed AppError system ### API Test Refactoring - Established consistent test pattern: route.{method}.test.ts - Split all combined test files by HTTP method - Created API_TEST_PATTERN.md documentation - All 69 tests passing with 100% coverage ### Additional Improvements - Implemented user metadata encryption support - Created shared schemas in lib/api-schemas.ts - Added editor preferences to create/update operations - Updated tracking documents and TODO.md 🤖 Generated with [Claude Code](https://claude.ai/code) Co-authored-by: Claude <noreply@anthropic.com>
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‎CLAUDE.md

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@@ -244,4 +244,4 @@ When updating any tracking documents (TODO.md, PHASE\_\*\_ISSUE_TRACKING.md, etc
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- **Phase Tracking**: `docs/PHASE_*_ISSUE_TRACKING.md` - Development phase status
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- **Labels Guide**: `docs/LABELS.md` - GitHub label system documentation
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Last Updated: 2025-06-07
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Last Updated: 2025-06-08

‎README.md

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@@ -31,11 +31,14 @@ GhostPaste is a privacy-focused code sharing platform that ensures your code sni
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- **📱 Responsive Design** - Works perfectly on all devices
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- **🚀 Global Edge Deployment** - Fast access from anywhere in the world
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### ✅ Available Features
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- **👁️ One-Time View** - Create snippets that disappear after being viewed once (implemented with secure deletion flow)
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- **📝 Version History** - Track changes with automatic versioning (storage ready)
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### 🚧 Coming Soon
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- **⏱️ Self-Expiring Content** - Set snippets to auto-delete after a specified time
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- **👁️ One-Time View** - Create snippets that disappear after being viewed once
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- **📝 Version History** - Track changes with automatic versioning (storage ready)
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## 🚀 Quick Start
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### 🚧 In Progress
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- API endpoints (Phase 5 - Storage foundation complete)
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- API endpoints (Phase 5 - Core CRUD operations complete)
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- Self-expiring gists
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- One-time view functionality
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- Version history UI
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- Complete frontend integration
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### 📅 Upcoming
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‎app/api/blobs/[id]/route.test.ts renamed to ‎app/api/blobs/[id]/route.get.test.ts

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import { describe, it, expect, vi, beforeEach, afterEach } from "vitest";
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import { NextRequest } from "next/server";
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import { GET, OPTIONS } from "./route";
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import { GET } from "./route";
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import { StorageOperations } from "@/lib/storage-operations";
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import { ApiErrors } from "@/lib/api-errors";
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import type { GistMetadata } from "@/types/models";
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vi.mock("@/lib/storage-operations", () => ({
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StorageOperations: {
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getGist: vi.fn(),
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deleteIfNeeded: vi.fn(),
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},
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}));
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const oneTimeMetadata = { ...mockMetadata, one_time_view: true };
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const mockGist = { metadata: oneTimeMetadata, blob: mockBlob };
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vi.mocked(StorageOperations.getGist).mockResolvedValue(mockGist);
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vi.mocked(StorageOperations.deleteIfNeeded).mockResolvedValue(true);
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const request = createRequest();
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const context = createContext();
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expect(response.headers.get("Cache-Control")).toBe(
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"no-store, no-cache, must-revalidate"
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);
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expect(StorageOperations.deleteIfNeeded).toHaveBeenCalledWith(
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oneTimeMetadata
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);
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// Note: Auto-deletion removed, now handled by explicit DELETE endpoint
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});
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it("should handle large blob data", async () => {
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// Note: Logger mock calls can't be easily tested with current mock setup
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});
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it("should continue if one-time deletion fails", async () => {
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const oneTimeMetadata = { ...mockMetadata, one_time_view: true };
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const mockGist = { metadata: oneTimeMetadata, blob: mockBlob };
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vi.mocked(StorageOperations.getGist).mockResolvedValue(mockGist);
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vi.mocked(StorageOperations.deleteIfNeeded).mockRejectedValue(
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new Error("Delete failed")
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);
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const request = createRequest();
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const context = createContext();
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const response = await GET(request, context);
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expect(response.status).toBe(200); // Should still succeed
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// Note: Logger mock calls can't be easily tested with current mock setup
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});
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// Note: Auto-deletion test removed since deletion is now handled by explicit DELETE endpoint
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it("should handle unexpected errors", async () => {
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const unexpectedError = new TypeError("Something went wrong");
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});
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});
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});
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describe("OPTIONS /api/blobs/[id]", () => {
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it("should return correct CORS headers", async () => {
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const response = await OPTIONS();
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expect(response.status).toBe(200);
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expect(response.headers.get("Access-Control-Allow-Origin")).toBe(
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"https://ghostpaste.dev"
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);
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expect(response.headers.get("Access-Control-Allow-Methods")).toBe(
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"GET, OPTIONS"
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);
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expect(response.headers.get("Access-Control-Allow-Headers")).toBe(
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"Content-Type"
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);
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expect(response.headers.get("Access-Control-Max-Age")).toBe("86400");
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});
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});

‎app/api/blobs/[id]/route.options.test.ts

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import { describe, it, expect } from "vitest";
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import { OPTIONS } from "./route";
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describe("OPTIONS /api/blobs/[id]", () => {
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it("should return correct CORS headers", async () => {
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const response = await OPTIONS();
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expect(response.status).toBe(200);
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expect(response.headers.get("Access-Control-Allow-Origin")).toBe(
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"https://ghostpaste.dev"
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);
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expect(response.headers.get("Access-Control-Allow-Methods")).toBe(
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"GET, OPTIONS"
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);
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expect(response.headers.get("Access-Control-Allow-Headers")).toBe(
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"Content-Type"
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);
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expect(response.headers.get("Access-Control-Max-Age")).toBe("86400");
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});
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});

‎app/api/blobs/[id]/route.ts

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}
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}
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// For one-time view gists, delete after successful retrieval
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if (metadata.one_time_view) {
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try {
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await StorageOperations.deleteIfNeeded(metadata);
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} catch (error) {
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// Log but don't fail the request if deletion fails
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logger.warn(
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"Failed to delete one-time view gist",
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error instanceof Error ? error : new Error(String(error))
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);
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}
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}
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// Note: One-time view deletion is now handled by explicit DELETE endpoint
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// to avoid race conditions between metadata and blob requests
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// Return blob data with appropriate headers
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return new NextResponse(blob, {

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