HN Proxy

${title}

${message}

\n \n \n `;\n}\n\nconst checkUser = async (req: Request): Promise => {\n // Extract the \"user\" cookie value\n const userCookie = req.headers.get(\"cookie\")?.split(\";\")\n .find(c => c.trim().startsWith(\"user=\"))?.split(\"=\")[1];\n\n // Check if a user cookie is already stored\n const storedCookie = await sqlite.execute(\n `SELECT cookie_value FROM user_cookie_${name} WHERE id = 1`,\n );\n\n if (!userCookie) {\n const errorPage = createErrorPage(\n \"Authentication Error\",\n \"No user cookie provided. Please log in to access this page.\",\n );\n return new Response(errorPage, { status: 401, headers: { \"Content-Type\": \"text/html\" } });\n }\n\n if (storedCookie.rows.length === 0) {\n // No stored cookie, save the current one\n await sqlite.execute(\n `INSERT INTO user_cookie_${name} (id, cookie_value) VALUES (1, ?)`,\n [userCookie],\n );\n } else if (userCookie !== storedCookie.rows[0].cookie_value) {\n if (storedCookie.rows[0].cookie_value.split(\"&\")[0] === userCookie.split(\"&\")[0]) {\n // Same user, different cookie value, update it\n await sqlite.execute(\n `UPDATE user_cookie_${name} SET cookie_value = ? WHERE id = 1`,\n [userCookie],\n );\n } else {\n // Different user, return an error\n const errorPage = createErrorPage(\n \"Access Denied\",\n \"You are not authorized to access this page. Only one user is allowed to use this proxy.\",\n );\n return new Response(errorPage, { status: 403, headers: { \"Content-Type\": \"text/html\" } });\n }\n }\n return userCookie;\n};\n\nfunction injectNotificationIndicator(html: string): string {\n const notificationCount = 21; // Hardcoded for now\n const notificationIndicator = `\n ${notificationCount}\n `;\n\n return html.replace(\n /( \$.*?<\\/span>\$) \\|/,\n `$1 |${notificationIndicator}|`\n );\n}\n\nexport default async function(req: Request): Promise {\n const url = new URL(req.url);\n let userCookie: string | undefined;\n if (url.pathname !== \"/login\" && !url.pathname.endsWith(\".svg\")) {\n let uc = await checkUser(req);\n if (typeof uc !== \"string\") return uc;\n userCookie = uc;\n }\n\n // Proceed with the proxy request\n let resp = await fetch(\"https://news.ycombinator.com\" + url.pathname + url.search, {\n headers: req.headers,\n method: req.method,\n body: req.body,\n redirect: \"manual\",\n });\n\n let text = await resp.text();\n text = text.replace(\"https://news.ycombinator.com\", httpEndpoint);\n\n // Inject notification indicator for logged-in users\n if (userCookie && text.includes('