# Workflow Examples

Detailed code examples for common accounting operations.

## Contents
- [Create a Vendor](#create-a-vendor)
- [Create Items](#create-items-for-common-purchases)
- [Complete Bill Entry](#complete-bill-entry-6-steps)
- [Pay Bill from Checking](#pay-bill-from-checking-account)
- [Pay Bill via Owner](#pay-bill-via-owner-reimbursement)
- [Reimburse Owner](#reimburse-owner)
- [Batch Operations](#batch-operations)

## Create a Vendor

```python
add_records("Vendors", [{
    "Name": "Acme Corp",
    "DefaultExpenseAccount": 36,  # Software & Subscriptions
    "PaymentTerms": "Due on Receipt",
    "Notes": "Software vendor",
    "IsActive": True
}])
# Returns: {"inserted_ids": [vendor_id]}
```

## Create Items for Common Purchases

```python
add_records("Items", [{
    "Name": "Monthly Software",
    "DefaultAccount": 36,
    "DefaultDescription": "Monthly SaaS subscription",
    "IsActive": True
}])
```

## Complete Bill Entry (6 Steps)

**Step 1: Create Bill Header**
```python
add_records("Bills", [{
    "Vendor": 1,  # vendor_id
    "BillNumber": "INV-001",
    "BillDate": 1759708800,  # Unix timestamp
    "DueDate": 1759708800,
    "Status": "Open",
    "Memo": "October services"
}])
# Returns: {"inserted_ids": [bill_id]}
```

**Step 2: Create Bill Line(s)**
```python
add_records("BillLines", [{
    "Bill": 1,  # bill_id from step 1
    "Item": 1,  # optional - auto-fills Account/Description
    "Account": 36,  # expense account
    "Description": "Monthly subscription",
    "Amount": 100.00
}])
```

**Step 3: Create Journal Entry**
```python
# Transaction header
add_records("Transactions", [{
    "Date": 1759708800,
    "Description": "Acme Corp - October services",
    "Reference": "INV-001",
    "Status": "Posted"
}])
# Returns: {"inserted_ids": [txn_id]}

# Transaction lines: Debit expense, Credit AP
add_records("TransactionLines", [
    {"Transaction": 1, "Account": 36, "Debit": 100.00, "Credit": 0, "Memo": "Monthly subscription"},
    {"Transaction": 1, "Account": 4, "Debit": 0, "Credit": 100.00, "Memo": "Monthly subscription"}
])
```

**Step 4: Link Bill to Transaction**
```python
update_records("Bills", [{"id": 1, "fields": {"EntryTransaction": 1}}])
```

**Step 5: Upload Invoice (if available)**
```bash
bash scripts/upload-attachment.sh invoice.pdf Bills 1 $TOKEN Invoice
```

**Step 6: Post-Entry Audit (REQUIRED)**

Run audit checks before concluding. See [Audit Reference](audit.md) for details.

```sql
-- Check 1: Transaction balanced
SELECT IsBalanced FROM Transactions WHERE id = {txn_id}
-- Expected: true

-- Check 2: Bill integrity
SELECT id, Vendor, EntryTransaction, Amount FROM Bills WHERE id = {bill_id}
-- Expected: All fields populated, Amount > 0
```

## Pay Bill from Checking Account

```python
# Step 1: Create payment transaction
add_records("Transactions", [{
    "Date": 1760832000,
    "Description": "Payment - Acme Corp INV-001",
    "Reference": "Check #1001",
    "Status": "Cleared"
}])
# Returns: {"inserted_ids": [txn_id]}

# Step 2: Debit AP, Credit Checking
add_records("TransactionLines", [
    {"Transaction": 2, "Account": 4, "Debit": 100.00, "Credit": 0, "Memo": "Pay INV-001"},
    {"Transaction": 2, "Account": 14, "Debit": 0, "Credit": 100.00, "Memo": "Pay INV-001"}
])

# Step 3: Create BillPayment record
add_records("BillPayments", [{
    "Bill": 1,
    "Transaction": 2,
    "Amount": 100.00,
    "PaymentDate": 1760832000
}])

# Step 4: Update bill status
update_records("Bills", [{"id": 1, "fields": {"Status": "Paid"}}])

# Step 5: Upload receipt (if available)
# bash scripts/upload-attachment.sh receipt.pdf Bills 1 $TOKEN Receipt

# Step 6: Post-Payment Audit (REQUIRED)
# Verify payment transaction balances and bill status updated correctly
```

## Pay Bill via Owner Reimbursement

When the owner pays a business expense personally:

```python
# Step 1: Create payment transaction
add_records("Transactions", [{
    "Date": 1760832000,
    "Description": "Owner payment - Acme Corp INV-001",
    "Reference": "Owner Reimb",
    "Status": "Posted"
}])

# Step 2: Debit AP, Credit Due to Owner (not Checking)
add_records("TransactionLines", [
    {"Transaction": 2, "Account": 4, "Debit": 100.00, "Credit": 0, "Memo": "Pay INV-001"},
    {"Transaction": 2, "Account": 22, "Debit": 0, "Credit": 100.00, "Memo": "Owner paid"}
])

# Step 3: Create BillPayment record
add_records("BillPayments", [{
    "Bill": 1,
    "Transaction": 2,
    "Amount": 100.00,
    "PaymentDate": 1760832000
}])

# Step 4: Update bill status
update_records("Bills", [{"id": 1, "fields": {"Status": "Paid"}}])

# Step 5: Upload receipt (if available)
# bash scripts/upload-attachment.sh receipt.pdf Bills 1 $TOKEN Receipt

# Step 6: Post-Payment Audit (REQUIRED)
```

## Reimburse Owner

When business pays back the owner:

```python
add_records("Transactions", [{
    "Date": 1762041600,
    "Description": "Owner reimbursement",
    "Reference": "Transfer",
    "Status": "Cleared"
}])

add_records("TransactionLines", [
    {"Transaction": 3, "Account": 22, "Debit": 500.00, "Credit": 0, "Memo": "Reimburse owner"},
    {"Transaction": 3, "Account": 14, "Debit": 0, "Credit": 500.00, "Memo": "Reimburse owner"}
])
```

## Batch Operations

When entering multiple bills efficiently:

1. **Create all Bills first** → collect inserted IDs
2. **Create all BillLines** referencing bill IDs
3. **Create all Transactions** → collect inserted IDs
4. **Create all TransactionLines** referencing transaction IDs
5. **Update all Bills** with EntryTransaction links in one call
6. (If paying) Create payment transactions, lines, and BillPayments
7. **Upload invoice attachments** if files are available

### Batch Attachment Uploads

```bash
# Example batch upload pattern
TOKEN=$(request_session_token with write permission)
for each (bill_id, invoice_path):
    curl -X POST -H "Authorization: Bearer $TOKEN" \
         -F "file=@$invoice_path" \
         https://grist-mcp.bballou.com/api/v1/attachments
    # Returns attachment_id
    update_records("Bills", [{"id": bill_id, "fields": {"Invoice": ["L", attachment_id]}}])
```

### Batch Update Example

```python
update_records("Bills", [
    {"id": 1, "fields": {"EntryTransaction": 1}},
    {"id": 2, "fields": {"EntryTransaction": 2}},
    {"id": 3, "fields": {"EntryTransaction": 3}}
])
```