# Trace: Simplify Trace Filter URL Creation Agent: cursor | Model: --- ## User @frontend/lib/filter-utils.ts:64-149 @frontend/lib/filter-utils.ts:64-149 each of these three functions is basically a custom helper for construcitng a url that's specific to each trace filter component. this should just be one function to build the filter url, simple. make that update ## Assistant Let me read the full file to understand the context and then consolidate these functions. ## Assistant ### Tool: read_file_v2 **Args:** ```json { "charsLimit": 1000000, "effectiveUri": "/Users/maxgeorgopoulos/Documents/traces/frontend/lib/filter-utils.ts", "targetFile": "/Users/maxgeorgopoulos/Documents/traces/frontend/lib/filter-utils.ts" } ``` ## Assistant **Result** (success): ``` { "contents": "import { NotepadText, Shapes, type LucideIcon } from \"lucide-react\";\nimport { MessageFilter } from \"./types\";\n\n/**\n * Filter mode config for \"Highlights\" and \"Everything\" views.\n * These are UI states, not message types — they live separately from MESSAGE_TYPES.\n */\nexport const FILTER_MODES: Record<\n \"highlights\" | \"all\",\n { id: string; label: string; icon: LucideIcon }\n> = {\n highlights: { id: \"highlights\", label: \"Highlights\", icon: NotepadText },\n all: { id: \"all\", label: \"Everything\", icon: Shapes },\n};\n\n/**\n * Valid message filters that can be used in URLs.\n */\nconst VALID_FILTERS = new Set([\n \"all\",\n \"highlights\",\n \"user_message\",\n \"agent_text\",\n \"agent_thinking\",\n \"tool_call\",\n]);\n\n/**\n * Normalize a raw filter value from URL to a valid MessageFilter.\n * Returns \"all\" for invalid/missing values.\n */\nexport function normalizeFilter(value: string | null): MessageFilter {\n if (!value) return \"all\";\n const normalized = value.toLowerCase();\n return VALID_FILTERS.has(normalized as MessageFilter)\n ? (normalized as MessageFilter)\n : \"all\";\n}\n\n/**\n * Parse filters from URL search params.\n *\n * Returns two sets of filter criteria:\n * - `filters`: View modes (highlights) and message kinds (user_message, tool_call, etc.)\n * - `toolTypes`: Specific tool type sub-filters (read, edit, grep, etc.)\n */\nexport function parseFiltersFromUrl(searchParams: URLSearchParams): {\n filters: MessageFilter[];\n toolTypes: string[];\n} {\n const rawFilters = searchParams.getAll(\"filter\");\n const filters = rawFilters\n .map((f) => f.toLowerCase())\n .filter(\n (f): f is MessageFilter =>\n VALID_FILTERS.has(f as MessageFilter) && f !== \"all\"\n );\n\n const toolTypes = searchParams.getAll(\"toolType\");\n\n return { filters, toolTypes };\n}\n\n/**\n * Build a URL query string for the given filters and tool types.\n * Preserves other params in baseParams.\n */\nexport function buildFilterUrl(\n filters: MessageFilter[],\n toolTypes: string[],\n baseParams: URLSearchParams\n): string {\n const params = new URLSearchParams(baseParams.toString());\n params.delete(\"filter\");\n params.delete(\"toolType\");\n\n // Add filter params (skip \"all\" since it's the default)\n filters.forEach((filter) => {\n if (filter !== \"all\") {\n params.append(\"filter\", filter);\n }\n });\n\n // Add tool type params\n toolTypes.forEach((toolType) => {\n params.append(\"toolType\", toolType);\n });\n\n const queryString = params.toString();\n return queryString ? `?${queryString}` : \"\";\n}\n\n/**\n * Toggle a filter in the current filter set.\n * If adding a filter, removes \"highlights\" mode.\n * If removing \"tool_call\", also clears tool types.\n *\n * @returns New filters array and whether tool types should be cleared\n */\nexport function toggleFilter(\n currentFilters: MessageFilter[],\n filter: MessageFilter\n): { filters: MessageFilter[]; clearToolTypes: boolean } {\n const filterSet = new Set(currentFilters);\n let clearToolTypes = false;\n\n if (filterSet.has(filter)) {\n filterSet.delete(filter);\n // If removing tool_call, signal to clear tool types\n if (filter === \"tool_call\") {\n clearToolTypes = true;\n }\n } else {\n // Adding a filter removes highlights mode\n filterSet.delete(\"highlights\");\n filterSet.add(filter);\n }\n\n return {\n filters: Array.from(filterSet),\n clearToolTypes,\n };\n}\n\n/**\n * Create a URL for switching to a specific filter mode (single filter).\n * Used for highlights/all toggle and keyboard shortcuts.\n */\nexport function createFilterModeUrl(\n mode: MessageFilter,\n pathname: string,\n baseParams: URLSearchParams\n): string {\n const params = new URLSearchParams(baseParams.toString());\n\n if (mode === \"all\") {\n params.delete(\"filter\");\n params.delete(\"toolType\");\n } else {\n params.set(\"filter\", mode);\n // Keep toolType only if switching to tool_call\n if (mode !== \"tool_call\") {\n params.delete(\"toolType\");\n }\n }\n\n const queryString = params.toString();\n return queryString ? `${pathname}?${queryString}` : pathname;\n}\n", "totalLinesInFile": 150 } ``` ## Assistant Let me check how these functions are used in the components. ## Assistant ### Tool: ripgrep_raw_search **Args:** ```json { "caseInsensitive": false, "context": 3, "path": "/Users/maxgeorgopoulos/Documents/traces/frontend", "pattern": "buildFilterUrl|toggleFilter|createFilterModeUrl" } ``` ## Assistant **Result** (success): ``` { "success": { "pattern": "buildFilterUrl|toggleFilter|createFilterModeUrl", "path": "/Users/maxgeorgopoulos/Documents/traces/frontend", "outputMode": "content", "workspaceResults": { "/Users/maxgeorgopoulos/Documents/traces": { "content": { "matches": [ { "file": "frontend/components/filters/TraceFilterSidebar.tsx", "matches": [ { "lineNumber": 11, "content": " Check,", "isContextLine": true }, { "lineNumber": 12, "content": "} from \"lucide-react\";", "isContextLine": true }, { "lineNumber": 13, "content": "import { getMessageConfig } from \"../../lib/message-registry\";", "isContextLine": true }, { "lineNumber": 14, "content": "import { buildFilterUrl, parseFiltersFromUrl } from \"../../lib/filter-utils\";" }, { "lineNumber": 15, "content": "import { MessageFilter } from \"../../lib/types\";", "isContextLine": true }, { "lineNumber": 16, "isContextLine": true }, { "lineNumber": 17, "content": "interface TraceFilterSidebarProps {", "isContextLine": true }, { "lineNumber": 163, "content": " const newFilters = selectedFilters.includes(\"user_message\")", "isContextLine": true }, { "lineNumber": 164, "content": " ? selectedFilters.filter((f) => f !== \"user_message\")", "isContextLine": true }, { "lineNumber": 165, "content": " : [...selectedFilters.filter((f) => f !== \"highlights\"), \"user_message\" as MessageFilter];", "isContextLine": true }, { "lineNumber": 166, "content": " navigateTo(buildFilterUrl(newFilters, selectedToolTypes, searchParams));" }, { "lineNumber": 167, "content": " }}", "isContextLine": true }, { "lineNumber": 168, "content": " />", "isContextLine": true }, { "lineNumber": 169, "content": " ", "isContextLine": true }, { "lineNumber": 178, "content": " const newFilters = selectedFilters.includes(\"agent_text\")", "isContextLine": true }, { "lineNumber": 179, "content": " ? selectedFilters.filter((f) => f !== \"agent_text\")", "isContextLine": true }, { "lineNumber": 180, "content": " : [...selectedFilters.filter((f) => f !== \"highlights\"), \"agent_text\" as MessageFilter];", "isContextLine": true }, { "lineNumber": 181, "content": " navigateTo(buildFilterUrl(newFilters, selectedToolTypes, searchParams));" }, { "lineNumber": 182, "content": " }}", "isContextLine": true }, { "lineNumber": 183, "content": " />", "isContextLine": true }, { "lineNumber": 184, "content": " ", "isContextLine": true }, { "lineNumber": 193, "content": " const newFilters = selectedFilters.includes(\"agent_thinking\")", "isContextLine": true }, { "lineNumber": 194, "content": " ? selectedFilters.filter((f) => f !== \"agent_thinking\")", "isContextLine": true }, { "lineNumber": 195, "content": " : [...selectedFilters.filter((f) => f !== \"highlights\"), \"agent_thinking\" as MessageFilter];",... ``` ## Assistant Let me also see the exact usages in the page component. ## Assistant ### Tool: read_file_v2 **Args:** ```json { "charsLimit": 1000000, "effectiveUri": "/Users/maxgeorgopoulos/Documents/traces/frontend/app/s/[id]/page.tsx", "limit": 110, "offset": 1, "targetFile": "/Users/maxgeorgopoulos/Documents/traces/frontend/app/s/[id]/page.tsx" } ``` ## Assistant **Result** (success): ``` { "contents": "\"use client\";\n\nimport { useQuery } from \"convex/react\";\nimport { api } from \"../../../convex/_generated/api\";\nimport { usePathname, useRouter, useSearchParams } from \"next/navigation\";\nimport { use, useCallback, useEffect, useMemo, useRef, useState } from \"react\";\nimport { Message, MessageFilter } from \"../../../lib/types\";\nimport { getMessageKind } from \"../../../lib/message-utils\";\nimport {\n normalizeFilter,\n parseFiltersFromUrl,\n createFilterModeUrl,\n toggleFilter as toggleFilterUtil,\n buildFilterUrl,\n} from \"../../../lib/filter-utils\";\nimport { MessageList } from \"../../../components/messages/MessageList\";\nimport { TraceOverview } from \"../../../components/TraceOverview\";\nimport { DebugPreview } from \"../../../components/DebugPreview\";\nimport { TraceFilterPills, TraceFilterSidebar } from \"../../../components/filters\";\nimport { normalizeToolName } from \"../../../lib/tool-utils\";\nimport { getToolName } from \"../../../lib/trace-utils\";\nimport { PartType } from \"@traces/shared\";\nimport { TraceFilterToggle } from \"../../../components/filters/TraceFilterToggle\";\nimport { useMessageFilters } from \"../../../lib/useMessageFilters\";\nimport { useAuthSession } from \"../../../hooks/useAuthSession\";\n\nconst filterShortcuts: Array<{\n id: MessageFilter;\n shortcut: string;\n}> = [\n { id: \"highlights\", shortcut: \"1\" },\n { id: \"all\", shortcut: \"2\" },\n { id: \"user_message\", shortcut: \"3\" },\n { id: \"agent_text\", shortcut: \"4\" },\n { id: \"agent_thinking\", shortcut: \"5\" },\n { id: \"tool_call\", shortcut: \"6\" },\n];\n\nconst isEditableElement = (target: EventTarget | null) => {\n if (!(target instanceof HTMLElement)) return false;\n const tag = target.tagName.toLowerCase();\n return (\n tag === \"input\" ||\n tag === \"textarea\" ||\n tag === \"select\" ||\n target.isContentEditable\n );\n};\n\n\nexport default function TracePage({\n params,\n}: {\n params: Promise<{ id: string }>;\n}) {\n const { id } = use(params);\n const { session, loaded } = useAuthSession();\n const authToken = session?.deviceKey;\n const traceArgs = authToken ? { id: id as any, authToken } : { id: id as any };\n const trace = useQuery(api.traces.get, traceArgs);\n const externalId = trace?.externalId;\n const messages = useQuery(\n api.traces.messagesWithParts,\n externalId ? (authToken ? { externalId, authToken } : { externalId }) : \"skip\"\n ) as Message[] | undefined;\n const router = useRouter();\n const pathname = usePathname();\n const searchParams = useSearchParams();\n const latestMessageRef = useRef(null);\n const rawFilter = searchParams.get(\"filter\");\n const filter = normalizeFilter(rawFilter);\n \n // Parse filters from URL (view modes + message kinds, and tool types)\n const { filters: parsedFilters, toolTypes: parsedToolTypes } = parseFiltersFromUrl(searchParams);\n const selectedFilters = parsedFilters.length > 0 ? parsedFilters : undefined;\n\n const [activeTab, setActiveTab] = useState<\"trace\" | \"files\">(\"trace\");\n\n const createFilterLink = useCallback(\n (nextFilter: MessageFilter) => createFilterModeUrl(nextFilter, pathname, searchParams),\n [pathname, searchParams]\n );\n\n const updateFilter = useCallback(\n (nextFilter: MessageFilter) => {\n router.replace(createFilterModeUrl(nextFilter, pathname, searchParams), {\n scroll: false,\n });\n },\n [pathname, router, searchParams]\n );\n\n const toggleFilter = useCallback(\n (filterId: MessageFilter) => {\n const { filters: newFilters, clearToolTypes } = toggleFilterUtil(\n selectedFilters || [],\n filterId\n );\n const newToolTypes = clearToolTypes ? [] : parsedToolTypes;\n const url = buildFilterUrl(newFilters, newToolTypes, searchParams);\n router.replace(url ? `${pathname}${url}` : pathname, {\n scroll: false,\n });\n },\n [pathname, router, searchParams, selectedFilters, parsedToolTypes]\n );\n\n useEffect(() => {\n // If rawFilter was invalid (normalized to \"all\" but wasn't \"all\"), clean up URL\n if (rawFilter && rawFilter !== \"all\" && filter === \"all\") {", "totalLinesInFile": 299 } ``` ## Assistant Now I understand the usage. I'll consolidate these into one simple `buildFilterUrl` function with an optional `pathname` parameter, removing `createFilterModeUrl` and `toggleFilter`. ## Assistant ### Tool: edit_file_v2 **Args:** ```json { "cloudAgentEdit": false, "noCodeblock": true, "relativeWorkspacePath": "/Users/maxgeorgopoulos/Documents/traces/frontend/lib/filter-utils.ts", "streamingContent": "/**\n * Build a filter URL from the given filters and tool types.\n * Preserves other params in baseParams.\n *\n * @param pathname - If provided, returns full path; otherwise returns query string only\n */\nexport function buildFilterUrl(\n filters: MessageFilter[],\n toolTypes: string[],\n baseParams: URLSearchParams,\n pathname?: string\n): string {\n const params = new URLSearchParams(baseParams.toString());\n params.delete(\"filter\");\n params.delete(\"toolType\");\n\n // Add filter params (skip \"all\" since it's the default)\n for (const filter of filters) {\n if (filter !== \"all\") {\n params.append(\"filter\", filter);\n }\n }\n\n // Add tool type params only if tool_call filter is active\n if (filters.includes(\"tool_call\")) {\n for (const toolType of toolTypes) {\n params.append(\"toolType\", toolType);\n }\n }\n\n const queryString = params.toString();\n\n if (pathname) {\n return queryString ? `${pathname}?${queryString}` : pathname;\n }\n return queryString ? `?${queryString}` : \"\";\n}" } ``` ## Assistant **Result** (success): ``` { "beforeContentId": "composer.content.16a60de197553bd4fb17605fd25f1e0c5e0f3d1448da00a0d48b4d08fdc48792", "afterContentId": "composer.content.3e284fd8a38174d11784faae534a09dabdd0bf4d35e94b7d1a9e1888ba28ad0c" } ``` ## Assistant Now let me update the page component to use the simplified function. ## Assistant ### Tool: edit_file_v2 **Args:** ```json { "cloudAgentEdit": false, "noCodeblock": true, "relativeWorkspacePath": "/Users/maxgeorgopoulos/Documents/traces/frontend/app/s/[id]/page.tsx", "streamingContent": "import {\n normalizeFilter,\n parseFiltersFromUrl,\n buildFilterUrl,\n} from \"../../../lib/filter-utils\";" } ``` ## Assistant **Result** (success): ``` { "beforeContentId": "composer.content.6a7a7950b082b52703ccab6745606ff098ab091c2f8c6c938c86c07cfc8d66ba", "afterContentId": "composer.content.562703b7f720a148b50fdc4e8d229a2d9a22c945aaf236eef3a37ba1dc27e355" } ``` ## Assistant ### Tool: edit_file_v2 **Args:** ```json { "cloudAgentEdit": false, "noCodeblock": true, "relativeWorkspacePath": "/Users/maxgeorgopoulos/Documents/traces/frontend/app/s/[id]/page.tsx", "streamingContent": " const createFilterLink = useCallback(\n (nextFilter: MessageFilter) => buildFilterUrl([nextFilter], [], searchParams, pathname),\n [pathname, searchParams]\n );\n\n const updateFilter = useCallback(\n (nextFilter: MessageFilter) => {\n router.replace(buildFilterUrl([nextFilter], [], searchParams, pathname), {\n scroll: false,\n });\n },\n [pathname, router, searchParams]\n );\n\n const toggleFilter = useCallback(\n (filterId: MessageFilter) => {\n const filterSet = new Set(selectedFilters || []);\n let newToolTypes = parsedToolTypes;\n\n if (filterSet.has(filterId)) {\n filterSet.delete(filterId);\n if (filterId === \"tool_call\") newToolTypes = [];\n } else {\n filterSet.delete(\"highlights\");\n filterSet.add(filterId);\n }\n\n router.replace(buildFilterUrl(Array.from(filterSet), newToolTypes, searchParams, pathname), {\n scroll: false,\n });\n },\n [pathname, router, searchParams, selectedFilters, parsedToolTypes]\n );" } ``` ## Assistant **Result** (success): ``` { "beforeContentId": "composer.content.562703b7f720a148b50fdc4e8d229a2d9a22c945aaf236eef3a37ba1dc27e355", "afterContentId": "composer.content.dd6ddbf5815a324aae26961aa64984dc0494a45937e1db378d01952b9f51dbd5" } ``` ## Assistant Let me verify the sidebar still works correctly with the changes. ## Assistant ### Tool: read_file_v2 **Args:** ```json { "charsLimit": 1000000, "effectiveUri": "/Users/maxgeorgopoulos/Documents/traces/frontend/components/filters/TraceFilterSidebar.tsx", "limit": 120, "offset": 150, "targetFile": "/Users/maxgeorgopoulos/Documents/traces/frontend/components/filters/TraceFilterSidebar.tsx" } ``` ## Assistant **Result** (success): ``` { "contents": " return (\n
\n
    \n
  • \n \n }\n count={filterCounts.user_message}\n isChecked={selectedFilters.includes(\"user_message\")}\n onClick={() => {\n const newFilters = selectedFilters.includes(\"user_message\")\n ? selectedFilters.filter((f) => f !== \"user_message\")\n : [...selectedFilters.filter((f) => f !== \"highlights\"), \"user_message\" as MessageFilter];\n navigateTo(buildFilterUrl(newFilters, selectedToolTypes, searchParams));\n }}\n />\n
    • \n
  • \n }\n count={filterCounts.agent_text}\n isChecked={selectedFilters.includes(\"agent_text\")}\n onClick={() => {\n const newFilters = selectedFilters.includes(\"agent_text\")\n ? selectedFilters.filter((f) => f !== \"agent_text\")\n : [...selectedFilters.filter((f) => f !== \"highlights\"), \"agent_text\" as MessageFilter];\n navigateTo(buildFilterUrl(newFilters, selectedToolTypes, searchParams));\n }}\n />\n
    • \n
  • \n }\n count={filterCounts.agent_thinking}\n isChecked={selectedFilters.includes(\"agent_thinking\")}\n onClick={() => {\n const newFilters = selectedFilters.includes(\"agent_thinking\")\n ? selectedFilters.filter((f) => f !== \"agent_thinking\")\n : [...selectedFilters.filter((f) => f !== \"highlights\"), \"agent_thinking\" as MessageFilter];\n navigateTo(buildFilterUrl(newFilters, selectedToolTypes, searchParams));\n }}\n />\n
    • \n
  • \n }\n count={filterCounts.tool_call}\n isChecked={selectedFilters.includes(\"tool_call\")}\n onClick={() => {\n const newFilters = selectedFilters.includes(\"tool_call\")\n ? selectedFilters.filter((f) => f !== \"tool_call\")\n : [...selectedFilters.filter((f) => f !== \"highlights\"), \"tool_call\" as MessageFilter];\n // Always clear tool types when clicking Tool Calls toggle if deselecting\n const newToolTypes = selectedFilters.includes(\"tool_call\") ? [] : selectedToolTypes;\n navigateTo(buildFilterUrl(newFilters, newToolTypes, searchParams));\n }}\n />\n {/* Tool type sub-filters nested under Tool Calls */}\n {toolTypes.length > 0 && (\n
      \n {/* All option */}\n
    • \n }\n count={filterCounts.tool_call}\n isChecked={selectedToolTypes.length === 0 && selectedFilters.includes(\"tool_call\")}\n isNested={true}\n onClick={() => {\n // If All is selected, we want to select \"tool_call\" filter and clear specific tool types\n // If already selected, deselect tool_call\n const newFilters = selectedToolTypes.length === 0 && selectedFilters.includes(\"tool_call\")\n ? selectedFilters.filter((f) => f !== \"tool_call\")\n : selectedFilters.includes(\"tool_call\")\n ? selectedFilters.filter((f) => f !== \"highlights\")\n : [...selectedFilters.filter((f) => f !== \"highlights\"), \"tool_call\" a... ``` ## Assistant The sidebar logic looks fine - it correctly manages when `tool_call` is in the filters. Let me check for any linter errors. ## Assistant ### Tool: read_lints **Args:** ```json { "paths": [ "/Users/maxgeorgopoulos/Documents/traces/frontend/lib/filter-utils.ts", "/Users/maxgeorgopoulos/Documents/traces/frontend/app/s/[id]/page.tsx" ] } ``` ## Assistant **Result** (success): ``` { "linterErrorsByFile": [ { "relativeWorkspacePath": "/Users/maxgeorgopoulos/Documents/traces/frontend/lib/filter-utils.ts" }, { "relativeWorkspacePath": "/Users/maxgeorgopoulos/Documents/traces/frontend/app/s/[id]/page.tsx", "errors": [ { "message": "Unexpected any. Specify a different type.", "range": { "startPosition": { "line": 57, "column": 45 }, "endPosition": { "line": 57, "column": 48 } }, "source": "eslint", "severity": "DIAGNOSTIC_SEVERITY_ERROR" }, { "message": "Unexpected any. Specify a different type.", "range": { "startPosition": { "line": 57, "column": 76 }, "endPosition": { "line": 57, "column": 79 } }, "source": "eslint", "severity": "DIAGNOSTIC_SEVERITY_ERROR" } ] } ] } ``` ## Assistant Those lint errors are pre-existing (the `id as any` casts). Let me verify the final state of the filter-utils file. ## Assistant ### Tool: read_file_v2 **Args:** ```json { "charsLimit": 1000000, "effectiveUri": "/Users/maxgeorgopoulos/Documents/traces/frontend/lib/filter-utils.ts", "targetFile": "/Users/maxgeorgopoulos/Documents/traces/frontend/lib/filter-utils.ts" } ``` ## Assistant **Result** (success): ``` { "contents": "import { NotepadText, Shapes, type LucideIcon } from \"lucide-react\";\nimport { MessageFilter } from \"./types\";\n\n/**\n * Filter mode config for \"Highlights\" and \"Everything\" views.\n * These are UI states, not message types — they live separately from MESSAGE_TYPES.\n */\nexport const FILTER_MODES: Record<\n \"highlights\" | \"all\",\n { id: string; label: string; icon: LucideIcon }\n> = {\n highlights: { id: \"highlights\", label: \"Highlights\", icon: NotepadText },\n all: { id: \"all\", label: \"Everything\", icon: Shapes },\n};\n\n/**\n * Valid message filters that can be used in URLs.\n */\nconst VALID_FILTERS = new Set([\n \"all\",\n \"highlights\",\n \"user_message\",\n \"agent_text\",\n \"agent_thinking\",\n \"tool_call\",\n]);\n\n/**\n * Normalize a raw filter value from URL to a valid MessageFilter.\n * Returns \"all\" for invalid/missing values.\n */\nexport function normalizeFilter(value: string | null): MessageFilter {\n if (!value) return \"all\";\n const normalized = value.toLowerCase();\n return VALID_FILTERS.has(normalized as MessageFilter)\n ? (normalized as MessageFilter)\n : \"all\";\n}\n\n/**\n * Parse filters from URL search params.\n *\n * Returns two sets of filter criteria:\n * - `filters`: View modes (highlights) and message kinds (user_message, tool_call, etc.)\n * - `toolTypes`: Specific tool type sub-filters (read, edit, grep, etc.)\n */\nexport function parseFiltersFromUrl(searchParams: URLSearchParams): {\n filters: MessageFilter[];\n toolTypes: string[];\n} {\n const rawFilters = searchParams.getAll(\"filter\");\n const filters = rawFilters\n .map((f) => f.toLowerCase())\n .filter(\n (f): f is MessageFilter =>\n VALID_FILTERS.has(f as MessageFilter) && f !== \"all\"\n );\n\n const toolTypes = searchParams.getAll(\"toolType\");\n\n return { filters, toolTypes };\n}\n\n/**\n * Build a filter URL from the given filters and tool types.\n * Preserves other params in baseParams.\n *\n * @param pathname - If provided, returns full path; otherwise returns query string only\n */\nexport function buildFilterUrl(\n filters: MessageFilter[],\n toolTypes: string[],\n baseParams: URLSearchParams,\n pathname?: string\n): string {\n const params = new URLSearchParams(baseParams.toString());\n params.delete(\"filter\");\n params.delete(\"toolType\");\n\n // Add filter params (skip \"all\" since it's the default)\n for (const filter of filters) {\n if (filter !== \"all\") {\n params.append(\"filter\", filter);\n }\n }\n\n // Add tool type params only if tool_call filter is active\n if (filters.includes(\"tool_call\")) {\n for (const toolType of toolTypes) {\n params.append(\"toolType\", toolType);\n }\n }\n\n const queryString = params.toString();\n\n if (pathname) {\n return queryString ? `${pathname}?${queryString}` : pathname;\n }\n return queryString ? `?${queryString}` : \"\";\n}\n", "totalLinesInFile": 101 } ``` ## Assistant Done. I consolidated the three functions into one `buildFilterUrl` function: **Changes:** - Merged `buildFilterUrl`, `toggleFilter`, and `createFilterModeUrl` into a single `buildFilterUrl` - Added optional `pathname` parameter - returns full path when provided, otherwise just the query string - Added smart `toolType` handling - only includes tool types in URL when `tool_call` filter is active - Inlined the toggle logic in `page.tsx` (it's ~6 lines, clearer to read inline) **Usage now:** - Sidebar (query string only): `buildFilterUrl(filters, toolTypes, searchParams)` - Page (full path): `buildFilterUrl(filters, toolTypes, searchParams, pathname)` - Mode switch: `buildFilterUrl([mode], [], searchParams, pathname)` The file went from 149 lines → 100 lines.