feat: NHTSA Full Historical Data Sync System#1
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MuhsinunC merged 5 commits intofeature/architecture-implementationfrom Jan 15, 2026
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- Target: Import all 2.1M+ historical NHTSA complaints - Approach: TDD with failing tests first - Includes unit tests, integration tests, and E2E browser tests - Phases: bulk import, incremental sync, admin UI Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Tests for parseFlatFileLine function - Tests for parseFlatFileStream async generator - Tests for FlatFileRecord to TransformedComplaint mapping - Tests written BEFORE implementation per TDD methodology Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Add parseFlatFileLine for parsing tab-delimited records - Add parseFlatFileStream async generator for memory-efficient streaming - Add mapFlatFileToComplaint for converting to database format - All 15 unit tests pass - TDD green phase complete for parser module Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Add downloadFlatFile for streaming download of FLAT_CMPL.zip - Add extractFlatFile for zip extraction - Add getFlatFileStream for memory-efficient processing - Add downloadAndExtract convenience function - All 22 unit tests pass Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Add BulkImportService for streaming large NHTSA flat file imports - Create /api/nhtsa/bulk-import endpoint (GET/POST/DELETE) - Implement SyncDashboard component with progress tracking - Add admin page for NHTSA data sync management - Create Progress UI component - Add comprehensive unit tests (all 1316 tests pass) - Add E2E tests for admin sync page This enables importing all 2.1M+ historical NHTSA complaints with real-time progress tracking and cancellation support. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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- Add Key Principle #1: Task-level to-do lists with TodoWrite - Update Instructions to include to-do list creation steps - Add concrete workflow example showing TodoWrite integration - Update Quick Reference with to-do list rules - Renumber existing principles (2-8) The workflow: 1. When starting a task, create to-do list with TodoWrite 2. Save exact items as children in the implementation plan 3. Work through completing each item 4. Mark complete in both TodoWrite AND plan 5. Move to next task when to-do list is done Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Summary
Changes
Core Services
src/lib/nhtsa/flat-file-parser.ts) - Parses NHTSA FLAT_CMPL.txt tab-delimited format using async generatorssrc/lib/nhtsa/flat-file-downloader.ts) - Downloads and extracts 1.5GB FLAT_CMPL.zip with progress callbackssrc/lib/nhtsa/bulk-import.ts) - Batch processing with duplicate detection and progress trackingAPI Endpoints
GET /api/nhtsa/bulk-import- Check import status/progressPOST /api/nhtsa/bulk-import- Start bulk importDELETE /api/nhtsa/bulk-import- Cancel importUI Components
src/components/admin/sync-dashboard.tsx) - Real-time progress display with start/cancel controlssrc/app/(dashboard)/admin/page.tsx) - Accessible at/adminsrc/components/ui/progress.tsx) - Radix UI progress barTest plan
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