# QuickBooks CSV Export/Import - Progress Tracker

## Overview

This document tracks the implementation progress of the QuickBooks CSV Export/Import feature, which provides an alternative to OAuth integration for QuickBooks.

**Branch:** `feature/quickbooks-csv-export`
**Started:** 2024-12-16
**Status:** Core Implementation Complete

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## Progress Log

### 2024-12-16 - Initial Setup

- [x] Created feature branch `feature/quickbooks-csv-export` from `release/0.15.0`
- [x] Set up development environment (port 3002)
- [x] Completed comprehensive exploration of existing codebase:
  - QuickBooks integration (`quickBooksOnlineAdapter.ts`, `qboClientService.ts`)
  - External tax calculation system (`externalTaxImportService.ts`)
  - Accounting export batch system (`accountingExportService.ts`)
  - Mapping resolver (`accountingMappingResolver.ts`)
- [x] Created implementation plan
- [x] Created feature tracking files:
  - `features-quickbooks-csv-export.json` - Task list with completion status
  - `progress-quickbooks-csv-export.md` - This progress file

### 2024-12-16 - Core Infrastructure

- [x] Created `csvFieldNormalizer.ts` utility
  - Column alias mappings for QuickBooks CSV variations
  - Header normalization function
  - Levenshtein distance for column suggestions
  - Validation utilities for required columns
- [x] Created `csvTaxImportValidator.ts` service
  - Structure validation (required columns with alias support)
  - Row-level parsing (dates, amounts, tax rates)
  - Database cross-referencing (invoice existence, tax_source check)
  - Duplicate detection and tax aggregation
- [x] Created `csvTaxImportService.ts` service
  - Main `importTaxFromCSV` method with validation and dry-run support
  - Proportional tax distribution using floor + remainder algorithm
  - Transaction-based updates for atomicity
  - Import history tracking in `external_tax_imports` table
  - Rollback capability to revert imports

### 2024-12-16 - Export Adapter

- [x] Created `QuickBooksCSVAdapter`
  - Implements `AccountingExportAdapter` interface
  - File-based delivery mode (generates downloadable CSV)
  - Resolves service, tax code, and payment term mappings
  - Supports tax delegation mode for external tax calculation
- [x] Registered adapter in `registry.ts`

### 2024-12-16 - API Routes

- [x] Created CSV export API route (`POST /api/accounting/csv/export`)
- [x] Created tax import API route (`POST /api/accounting/csv/import/tax`)
- [x] Created template download route (`GET /api/accounting/csv/import/tax/template`)
- [x] Created import history route (`GET /api/accounting/csv/import/tax/history`)
- [x] Created rollback route (`POST /api/accounting/csv/import/tax/rollback/[importId]`)

### 2024-12-16 - UI Components

- [x] Created `CSVExportPanel` component
  - Date range picker
  - Invoice status filters
  - Tax delegation mode toggle
  - Download button with loading state
- [x] Created `CSVTaxImportPanel` component
  - File upload (drag & drop)
  - Required date range
  - Inline help with QuickBooks export instructions
  - Validate and Import buttons
- [x] Created `CSVImportPreview` component
  - Stats summary (rows, valid, matched)
  - Validation status badges
  - Error and warning lists
  - Import summary with tax totals
- [x] Created `CSVIntegrationSettings` wrapper component
- [x] Integrated into `IntegrationsSettingsPage` under Accounting category

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## Phase Status

| Phase | Status | Progress |
|-------|--------|----------|
| 1. Core Infrastructure | Mostly Complete | 3/5 tasks |
| 2. Export Adapter | Mostly Complete | 3/4 tasks |
| 3. Import API | Mostly Complete | 2/4 tasks |
| 4. UI Components | Complete | 4/4 tasks |
| 5. Testing & Polish | Not Started | 0/3 tasks |

**Overall Progress:** 12/20 tasks (60%)

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## Remaining Work

### Phase 1: Core Infrastructure
- [ ] Write unit tests for CSV field normalizer
- [ ] Write unit tests for CSV tax import validator

### Phase 2: Export Adapter
- [ ] Write unit tests for QuickBooksCSVAdapter

### Phase 3: Import API
- [ ] Write integration tests for CSV export flow
- [ ] Write integration tests for CSV tax import flow

### Phase 5: Testing & Polish
- [ ] Write Playwright E2E tests for CSV export UI
- [ ] Write Playwright E2E tests for CSV import UI
- [ ] Add optional database index for CSV import queries

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## Commits

| Date | Commit | Description |
|------|--------|-------------|
| 2024-12-16 | 18b82a1b2 | feat(csv-import): add CSV field normalizer utility |
| 2024-12-16 | fc0652c8a | feat(csv-import): add CSV tax import validator service |
| 2024-12-16 | c6fb100a3 | feat(csv-import): add CSV tax import service |
| 2024-12-16 | 26f55cf6e | feat(csv-export): add QuickBooks CSV export adapter |
| 2024-12-16 | f586bcfa6 | feat(csv): add CSV accounting API routes |
| 2024-12-16 | 7e008f1ff | feat(csv-ui): add CSV export and import UI components |
| 2024-12-16 | 950ab8671 | feat(csv-ui): integrate CSV panels into integrations settings |

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## Reference Files

Key files created during implementation:

**Core Services:**
- `server/src/lib/utils/csvFieldNormalizer.ts` - Column name normalization
- `server/src/lib/services/csvTaxImportValidator.ts` - Validation rules
- `server/src/lib/services/csvTaxImportService.ts` - Import logic

**Adapter:**
- `server/src/lib/adapters/accounting/quickBooksCSVAdapter.ts` - CSV export adapter
- `server/src/lib/adapters/accounting/registry.ts` - Adapter registration

**API Routes:**
- `server/src/app/api/accounting/csv/export/route.ts`
- `server/src/app/api/accounting/csv/import/tax/route.ts`
- `server/src/app/api/accounting/csv/import/tax/template/route.ts`
- `server/src/app/api/accounting/csv/import/tax/history/route.ts`
- `server/src/app/api/accounting/csv/import/tax/rollback/[importId]/route.ts`

**UI Components:**
- `server/src/components/integrations/csv/CSVExportPanel.tsx`
- `server/src/components/integrations/csv/CSVTaxImportPanel.tsx`
- `server/src/components/integrations/csv/CSVImportPreview.tsx`
- `server/src/components/settings/integrations/CSVIntegrationSettings.tsx`

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## Notes

- The CSV integration is accessible from Settings > Integrations > Accounting tab
- Service mappings must be configured in the QuickBooks Online section before exporting
- Unmapped services will cause the entire export to fail (consistent with existing adapters)
- Inline help is provided in the tax import panel with QuickBooks export instructions
