# OCR Regex Catalog — Appointment Parsing

Full extraction patterns from the ShopProQuote production parser, with OCR corruption variants and test cases.

## Structured Field Patterns

| Field | Regex | Notes |
|-------|-------|-------|
| Phone | `\(?\d{3}\)?[\s.\-]*\d{3}[\s.\-]*\d{4}` | Forgiving of (xxx), xxx-xxx, xxx.xxx |
| VIN | `\b[A-HJ-NPR-Z0-9OIQ]{17}\b/i` | Accepts O→0, I→1, Q→0 OCR errors |
| Email | `\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,}\b` | Extract BEFORE VIN to prevent false matches |
| Date | `\b(?:\d{4}[\/\-.]\d{1,2}[\/\-.]\d{1,2}|\d{1,2}[\/]\d{1,2}(?:[\/]\d{4})?|(?:Jan|Feb|...)[a-z]*\s+\d{1,2}(?:[,\s]+\d{4})?)\b` | 3 formats: ISO, US slash, month name |
| Time | `\b(\d{1,2}):(\d{2})\s*(AM|PM)?\b|\b(\d{1,2})\s*(AM|PM)\b` | 9:00 AM, 1:30PM, 14:00, 8am |
| Duration | `\b(\d+(?:\.\d+)?)\s*(?:min|minutes?|hrs?|hours?)\b` | 0.5 hrs → 30 min, 60min → 60 |
| OP Code | `\[([A-Z0-9\-:]+)\]` | [REP], [MA10], [23-046:6MX00] |
| Vehicle | `(\d{4})\s+([A-Za-z]+)\s+([A-Za-z0-9\-]+)` | 2023 Honda RIDGELINE |
| Vehicle fallback | `(\d{4})\s+([A-Za-z]+)` | 2023 Honda |
| Row anchor | `(\d{1,2}):(\d{2})\s*(AM|PM)\s+(\d+(?:\.\d+)?)\s*hrs?` | 9:00AM 0.5 hrs |

## Known Makes

```
ford|chevy|chevrolet|toyota|honda|nissan|bmw|mercedes|audi|dodge|jeep|gmc|ram|hyundai|kia|subaru|mazda|vw|volkswagen|lexus|acura|infiniti|cadillac|buick|chrysler|lincoln|tesla|volvo
```

## Advisor/Noise Stripping Patterns

### Known Advisor Names
```
Rrahman Grajqevci, Rrshman, Grajqevci, Grokevel
```

### OCR Corruption Variants
```
eE 3 zoom, Eee om 3 gem, eE\s*3\s*zoom, Eee\s*om\s*3\s*gem
```

### Junk Tokens
```
RO, VIN, os, b=
```

### Header Metadata (strip before parsing)
```
/^(Monday|Tuesday|...|Sunday)\s+[A-Z][a-z]{2}\s+\d{1,2}/i  // "Wednesday Jun 18, 2025"
/^(Advisor|Refresh|Weekly|Daily)(\s|$)/i                     // "Weekly", "Advisor"
```

## Service Extraction Rule

```js
// Stop at newline — critical to prevent vehicle info absorption
var svcRe = new RegExp('\\[' + opCode + '\\]\\s*([^\\n\\[]*)', 'i');
```

**Wrong** (captures vehicle on next line):
```js
var svcRe = new RegExp('\\[' + opCode + '\\]\\s*([^\\[]*)', 'i');
```

## Block Splitting Hierarchy

1. **Row-anchor split** (preferred): Find Time+Duration patterns → split at each boundary
2. **Blank-line fallback**: `t.split(/\n\s*\n/)` when < 2 anchors found
3. **Table fallback**: Uniform word counts across lines → treat each line as a record

## VIN OCR Fix

```js
function fixVin(v) {
    return v.toUpperCase().replace(/O/g,'0').replace(/I/g,'1').replace(/Q/g,'0');
}
```

## Cross-Block Name Carry

```js
// Return value from parseOne() is nextName — passes between blocks
if (appt.serviceType) {
    var tn = appt.serviceType.match(/\s+([A-Z]{2,}(?:\s+[A-Z]{2,}){1,2})\s*$/);
    if (tn && tn[1].length > 3) {
        appt.serviceType = appt.serviceType.substring(0, appt.serviceType.length - tn[0].length).trim();
        nextName = tn[1];
    }
}
return nextName; // fed as carryName to next block
```

## Test Cases

### T5: 3-appointment screenshot with blank lines
```
9:00AM 0.5 hrs RO Gary Bowers (865) 335-3874 Rrahman Grajqevci [REP] Tailgate wiring harness connector replacement garyb9623@gmail.com
2023 Honda RIDGELINE VIN SEPYK3F70PB011523

10:30AM 1.0 hrs RO HITESHKUMAR PATEL 865-235-0156 Rrahman Grajqevci [23-046:6MX00] Oil change and tire rotation
2013 Honda ODYSSEY VIN SENRLEHB9PB042710

11:45AM 0.5 hrs RO STEPHEN LOWERY 865-384-6984 Rrahman Grajqevci [MA10] Replace front brake pads
2013 Honda CROSSTOUR VIN SJ6TF1HS4DL001541
```

### T6: Row-anchor (no blank lines, Monday header)
```
Wednesday Jun 18, 2025  Weekly  Advisor  Refresh
9:00AM 0.5 hrs RO Gary Bowers (865) 335-3874 Rrahman Grajqevci [REP] Tailgate wiring
2023 Honda RIDGELINE VIN 5FPYK3F70PB011523 garyb9623@gmail.com
10:30AM 1.0 hrs RO HITESHKUMAR PATEL 865-235-0156 Rrahman Grajqevci [23-046:6MX00] Oil change
2013 Honda ODYSSEY VIN SENRLEHB9PB042710
11:45AM 0.5 hrs RO STEPHEN LOWERY 865-384-6984 Rrahman Grajqevci [MA10] Brake pads
2013 Honda CROSSTOUR VIN SJ6TF1HS4DL001541
```