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<span class="cline-any cline-neutral">&nbsp;</span></td><td class="text"><pre class="prettyprint lang-js">const Tesseract = <span class="cstat-no" title="statement not covered" >require('tesseract.js');</span>
const { exec } = <span class="cstat-no" title="statement not covered" >require('child_process');</span>
const fs = <span class="cstat-no" title="statement not covered" >require('fs').promises;</span>
const path = <span class="cstat-no" title="statement not covered" >require('path');</span>
const logger = <span class="cstat-no" title="statement not covered" >require('../utils/logger');</span>
&nbsp;
class OCRService {
<span class="fstat-no" title="function not covered" > co</span>nstructor() {
<span class="cstat-no" title="statement not covered" > this.initialized = false;</span>
}
&nbsp;
<span class="fstat-no" title="function not covered" > as</span>ync initialize() {
<span class="cstat-no" title="statement not covered" > try {</span>
<span class="cstat-no" title="statement not covered" > logger.info('Initializing OCR service...');</span>
<span class="cstat-no" title="statement not covered" > this.initialized = true;</span>
<span class="cstat-no" title="statement not covered" > logger.info('OCR service initialized successfully');</span>
} catch (error) {
<span class="cstat-no" title="statement not covered" > logger.error('Failed to initialize OCR service:', error);</span>
<span class="cstat-no" title="statement not covered" > throw error;</span>
}
}
&nbsp;
<span class="fstat-no" title="function not covered" > as</span>ync extractTextFromPDF(pdfPath) {
<span class="cstat-no" title="statement not covered" > if (!this.initialized) {</span>
<span class="cstat-no" title="statement not covered" > await this.initialize();</span>
}
&nbsp;
<span class="cstat-no" title="statement not covered" > try {</span>
<span class="cstat-no" title="statement not covered" > logger.info('Starting OCR extraction for PDF', { pdfPath });</span>
&nbsp;
const tempDir = <span class="cstat-no" title="statement not covered" >'/data/tmp/ocr-temp';</span>
<span class="cstat-no" title="statement not covered" > await fs.mkdir(tempDir, { recursive: true });</span>
// Use pdftoppm to convert PDF to images
const outputPattern = <span class="cstat-no" title="statement not covered" >path.join(tempDir, 'page');</span>
// Convert PDF to PNG images using pdftoppm
const convertCommand = <span class="cstat-no" title="statement not covered" >`pdftoppm -png -r 300 "${pdfPath}" "${outputPattern}"`;</span>
<span class="cstat-no" title="statement not covered" > await new Promise(<span class="fstat-no" title="function not covered" >(r</span>esolve, reject) =&gt; {</span>
<span class="cstat-no" title="statement not covered" > exec(convertCommand, <span class="fstat-no" title="function not covered" >(e</span>rror, stdout, stderr) =&gt; {</span>
<span class="cstat-no" title="statement not covered" > if (error) {</span>
<span class="cstat-no" title="statement not covered" > logger.error('PDF conversion failed:', error);</span>
<span class="cstat-no" title="statement not covered" > reject(error);</span>
} else {
<span class="cstat-no" title="statement not covered" > logger.info('PDF conversion completed');</span>
<span class="cstat-no" title="statement not covered" > resolve();</span>
}
});
});
&nbsp;
// Find generated images
const files = <span class="cstat-no" title="statement not covered" >await fs.readdir(tempDir);</span>
const pageImages = <span class="cstat-no" title="statement not covered" >files</span>
.filter(<span class="fstat-no" title="function not covered" >fi</span>le =&gt; <span class="cstat-no" title="statement not covered" >file.startsWith('page-') &amp;&amp; file.endsWith('.png'))</span>
.map(<span class="fstat-no" title="function not covered" >fi</span>le =&gt; <span class="cstat-no" title="statement not covered" >path.join(tempDir, file))</span>
.sort(); // Sort to ensure page order
// Limit to first 3 pages for performance
const imagesToProcess = <span class="cstat-no" title="statement not covered" >pageImages.slice(0, 3);</span>
&nbsp;
<span class="cstat-no" title="statement not covered" > logger.info(`Converted ${imagesToProcess.length} pages to images`);</span>
&nbsp;
let extractedText = <span class="cstat-no" title="statement not covered" >'';</span>
<span class="cstat-no" title="statement not covered" > for (let i = <span class="cstat-no" title="statement not covered" >0;</span> i &lt; imagesToProcess.length; i++) {</span>
const imagePath = <span class="cstat-no" title="statement not covered" >imagesToProcess[i];</span>
<span class="cstat-no" title="statement not covered" > try {</span>
<span class="cstat-no" title="statement not covered" > logger.info(`Processing page ${i + 1} with OCR`);</span>
const { data: { text } } = <span class="cstat-no" title="statement not covered" >await Tesseract.recognize(imagePath, 'dan');</span>
<span class="cstat-no" title="statement not covered" > extractedText += `\n--- Side ${i + 1} ---\n${text}\n`;</span>
&nbsp;
<span class="cstat-no" title="statement not covered" > try {</span>
<span class="cstat-no" title="statement not covered" > await fs.unlink(imagePath);</span>
} catch (unlinkError) {
<span class="cstat-no" title="statement not covered" > logger.warn('Could not delete temp image:', unlinkError);</span>
}
&nbsp;
} catch (ocrError) {
<span class="cstat-no" title="statement not covered" > logger.error(`OCR failed for page ${i + 1}:`, ocrError);</span>
<span class="cstat-no" title="statement not covered" > extractedText += `\n--- Side ${i + 1} (OCR fejlede) ---\n`;</span>
}
}
&nbsp;
<span class="cstat-no" title="statement not covered" > logger.info('OCR extraction completed', { </span>
pages: imagesToProcess.length,
textLength: extractedText.length
});
&nbsp;
<span class="cstat-no" title="statement not covered" > return extractedText;</span>
&nbsp;
} catch (error) {
<span class="cstat-no" title="statement not covered" > logger.error('Error in OCR text extraction:', error);</span>
<span class="cstat-no" title="statement not covered" > return `OCR extraction failed: ${error.message}`;</span>
}
}
&nbsp;
<span class="fstat-no" title="function not covered" > as</span>ync extractPriceDataFromText(text, documentType = <span class="branch-0 cbranch-no" title="branch not covered" >'material')</span> {
<span class="cstat-no" title="statement not covered" > try {</span>
<span class="cstat-no" title="statement not covered" > logger.info('Extracting structured price data from OCR text');</span>
&nbsp;
const cleanedText = <span class="cstat-no" title="statement not covered" >this.cleanOCRText(text);</span>
const priceLines = <span class="cstat-no" title="statement not covered" >this.findPriceLines(cleanedText);</span>
<span class="cstat-no" title="statement not covered" > logger.info(`Found ${priceLines.length} potential price lines`);</span>
<span class="cstat-no" title="statement not covered" > if (priceLines.length &gt; 0) {</span>
<span class="cstat-no" title="statement not covered" > logger.info('Price lines found:', priceLines.slice(0, 3)); </span>// Show first 3 lines
}
&nbsp;
const extractedItems = <span class="cstat-no" title="statement not covered" >[];</span>
<span class="cstat-no" title="statement not covered" > for (const line of priceLines) {</span>
const parsed = <span class="cstat-no" title="statement not covered" >this.parsePriceLine(line, documentType);</span>
<span class="cstat-no" title="statement not covered" > if (parsed) {</span>
<span class="cstat-no" title="statement not covered" > extractedItems.push(parsed);</span>
}
}
&nbsp;
<span class="cstat-no" title="statement not covered" > return {</span>
success: true,
documentType,
items: extractedItems,
rawText: cleanedText,
metadata: {
totalLines: priceLines.length,
parsedItems: extractedItems.length,
timestamp: new Date().toISOString()
}
};
&nbsp;
} catch (error) {
<span class="cstat-no" title="statement not covered" > logger.error('Error extracting price data from text:', error);</span>
<span class="cstat-no" title="statement not covered" > return {</span>
success: false,
error: error.message,
items: [],
rawText: text
};
}
}
&nbsp;
<span class="fstat-no" title="function not covered" > cl</span>eanOCRText(text) {
let cleaned = <span class="cstat-no" title="statement not covered" >text;</span>
const corrections = <span class="cstat-no" title="statement not covered" >[</span>
[/\b0([0-9]+)\b/g, '$1'], // Remove leading zeros
[/([0-9])\s+([0-9])/g, '$1$2'], // Remove spaces in numbers
[/,(\d{2})\s/g, ',$1 '], // Fix decimal separators
[/ +/g, ' '], // Multiple spaces to single (NOT \s+ which includes newlines!)
[/\n\s*\n/g, '\n'], // Multiple newlines to single
];
&nbsp;
<span class="cstat-no" title="statement not covered" > for (const [pattern, replacement] of corrections) {</span>
<span class="cstat-no" title="statement not covered" > cleaned = cleaned.replace(pattern, replacement);</span>
}
&nbsp;
<span class="cstat-no" title="statement not covered" > return cleaned.trim();</span>
}
&nbsp;
<span class="fstat-no" title="function not covered" > fi</span>ndPriceLines(text) {
const lines = <span class="cstat-no" title="statement not covered" >text.split('\n');</span>
const priceLines = <span class="cstat-no" title="statement not covered" >[];</span>
&nbsp;
// Enhanced patterns for Danish prices - more flexible
const pricePatterns = <span class="cstat-no" title="statement not covered" >[</span>
/\d+[.,]\d{2}/, // Basic price pattern (123.45 or 123,45)
/\d+,\d{2}/, // Danish decimal format
/\d+\.\d{3},\d{2}/, // Danish thousands format (1.234,56)
/\d{3,}\.\d{2}/, // Also catch 1000.50 format
/\d+\s*pakker/i, // Lines with "pakker"
/\d+\s*stk/i, // Lines with "stk"
/kr\.?/i, // Danish currency
/DKK/i, // Currency code
/pris\s*pr/i, // "pris pr" patterns
/\d+[.,]\d{2}.*\d+[.,]\d{2}/, // Lines with multiple prices
];
&nbsp;
<span class="cstat-no" title="statement not covered" > for (const line of lines) {</span>
const trimmedLine = <span class="cstat-no" title="statement not covered" >line.trim();</span>
// Skip empty lines and very short lines
<span class="cstat-no" title="statement not covered" > if (trimmedLine.length &lt; 5) <span class="cstat-no" title="statement not covered" >continue;</span></span>
<span class="cstat-no" title="statement not covered" > if (/^(side|page|\d+\s*$|---|\s*$)/i.test(trimmedLine)) <span class="cstat-no" title="statement not covered" >continue;</span></span>
// Skip pure header/contact info lines but be more selective
<span class="cstat-no" title="statement not covered" > if (/^(tlf\.|email:|web:|swift:|iban:|reg\.\s*nr\.?:|konto\s*nr\.?:)/i.test(trimmedLine)) <span class="cstat-no" title="statement not covered" >continue;</span></span>
<span class="cstat-no" title="statement not covered" > if (/^(leveringsadresse:|betalingsbetingelser:|leveringsform:)/i.test(trimmedLine)) <span class="cstat-no" title="statement not covered" >continue;</span></span>
// Check if line contains price indicators
const hasPrice = <span class="cstat-no" title="statement not covered" >pricePatterns.some(<span class="fstat-no" title="function not covered" >pa</span>ttern =&gt; <span class="cstat-no" title="statement not covered" >pattern.test(trimmedLine))</span>;</span>
// Also include lines that look like product lines even without perfect price match
const looksLikeProduct = <span class="cstat-no" title="statement not covered" >/\d+.*mm\..*\d+[.,]\d+/i.test(trimmedLine) ||</span>
/varenr.*\d+[.,]\d+/i.test(trimmedLine) ||
/\bmatlak\b.*\d+[.,]\d+/i.test(trimmedLine) ||
/\bplank\b.*\d+[.,]\d+/i.test(trimmedLine);
<span class="cstat-no" title="statement not covered" > if (hasPrice || looksLikeProduct) {</span>
<span class="cstat-no" title="statement not covered" > priceLines.push(trimmedLine);</span>
}
}
&nbsp;
<span class="cstat-no" title="statement not covered" > return priceLines;</span>
}
&nbsp;
<span class="fstat-no" title="function not covered" > pa</span>rsePriceLine(line, documentType) {
<span class="cstat-no" title="statement not covered" > try {</span>
// Enhanced price extraction for Danish format
const priceMatches = <span class="cstat-no" title="statement not covered" >line.match(/(\d{1,3}(?:\.\d{3})*,\d{2}|\d+,\d{2}|\d+\.\d{2})/g);</span>
<span class="cstat-no" title="statement not covered" > if (!priceMatches || priceMatches.length === 0) <span class="cstat-no" title="statement not covered" >return null;</span></span>
&nbsp;
// Take the largest price found (usually the total)
const prices = <span class="cstat-no" title="statement not covered" >priceMatches.map(<span class="fstat-no" title="function not covered" >p </span>=&gt; <span class="cstat-no" title="statement not covered" >parseFloat(p.replace(/\./g, '').replace(',', '.')))</span>;</span>
const price = <span class="cstat-no" title="statement not covered" >Math.max(...prices);</span>
&nbsp;
// Extract units with better patterns
const unitMatch = <span class="cstat-no" title="statement not covered" >line.match(/\b(\d+(?:[.,]\d+)?)\s*(m²|m2|m³|m3|stk|pakker?|kg|timer?|løbm|enheder?|pcs)\b/i);</span>
const quantity = <span class="cstat-no" title="statement not covered" >unitMatch ? parseFloat(unitMatch[1].replace(',', '.')) : 1;</span>
const unit = <span class="cstat-no" title="statement not covered" >unitMatch ? unitMatch[2].toLowerCase() : 'stk';</span>
&nbsp;
// Extract product name (everything before first number or specific patterns)
let name = <span class="cstat-no" title="statement not covered" >line;</span>
// Try different patterns to extract product name
const patterns = <span class="cstat-no" title="statement not covered" >[</span>
/^([^0-9]+?)\s*\d+/, // Text before first number
/^(.*?)\s+\d+[.,]\d+\s*pakker?/i, // Text before "X,XX pakker"
/^(.*?)\s+\d+[.,]\d+\s*stk/i, // Text before "X,XX stk"
/^(.{10,60}?)\s+\d/, // First 10-60 chars before number
];
<span class="cstat-no" title="statement not covered" > for (const pattern of patterns) {</span>
const match = <span class="cstat-no" title="statement not covered" >line.match(pattern);</span>
<span class="cstat-no" title="statement not covered" > if (match &amp;&amp; match[1].trim().length &gt; 3) {</span>
<span class="cstat-no" title="statement not covered" > name = match[1].trim();</span>
<span class="cstat-no" title="statement not covered" > break;</span>
}
}
&nbsp;
// Clean up name
<span class="cstat-no" title="statement not covered" > name = name</span>
.replace(/^(varenr\.?|artikel|item)\.?\s*/i, '')
.replace(/\s*[-–—]\s*$/, '')
.replace(/[^\w\sæøåÆØÅ\-.,()]/g, '')
.trim();
&nbsp;
// Skip if name is too short or seems invalid
<span class="cstat-no" title="statement not covered" > if (name.length &lt; 3 || /^\d+$/.test(name)) {</span>
<span class="cstat-no" title="statement not covered" > name = `Produkt fra ${documentType}`;</span>
}
&nbsp;
// Extract SKU/article number
const skuMatch = <span class="cstat-no" title="statement not covered" >line.match(/\b([A-Z0-9]{4,}(?:-[A-Z0-9]+)*)\b/);</span>
const sku = <span class="cstat-no" title="statement not covered" >skuMatch ? skuMatch[1] : null;</span>
&nbsp;
<span class="cstat-no" title="statement not covered" > return {</span>
sku,
name: name.substring(0, 100), // Limit name length
description: line.substring(0, 200), // Limit description length
quantity,
unit: this.normalizeUnit(unit),
price,
currency: 'DKK',
source: 'ocr',
confidence: this.calculatePriceConfidence(line, price, unit, name)
};
&nbsp;
} catch (error) {
<span class="cstat-no" title="statement not covered" > logger.warn('Failed to parse price line:', { line, error: error.message });</span>
<span class="cstat-no" title="statement not covered" > return null;</span>
}
}
&nbsp;
<span class="fstat-no" title="function not covered" > ca</span>lculatePriceConfidence(line, price, unit, name) {
let confidence = <span class="cstat-no" title="statement not covered" >0.3;</span> // Base confidence
&nbsp;
// Price seems reasonable
<span class="cstat-no" title="statement not covered" > if (price &gt; 0 &amp;&amp; price &lt; 100000) <span class="cstat-no" title="statement not covered" >confidence += 0.2;</span></span>
<span class="cstat-no" title="statement not covered" > if (price &gt; 10 &amp;&amp; price &lt; 50000) <span class="cstat-no" title="statement not covered" >confidence += 0.1;</span></span>
// Has valid unit
<span class="cstat-no" title="statement not covered" > if (['m²', 'm³', 'stk', 'pakker', 'kg', 'time'].includes(unit)) <span class="cstat-no" title="statement not covered" >confidence += 0.2;</span></span>
// Line length suggests complete information
<span class="cstat-no" title="statement not covered" > if (line.length &gt; 20 &amp;&amp; line.length &lt; 300) <span class="cstat-no" title="statement not covered" >confidence += 0.1;</span></span>
// Name seems reasonable
<span class="cstat-no" title="statement not covered" > if (name &amp;&amp; name.length &gt; 5 &amp;&amp; name.length &lt; 80) <span class="cstat-no" title="statement not covered" >confidence += 0.1;</span></span>
// Contains product-like keywords
<span class="cstat-no" title="statement not covered" > if (/\b(plank|gulv|lak|eg|træ|mm\b|bredde|længde|pakke|leveringsomkostning|håndtering)/i.test(line)) {</span>
<span class="cstat-no" title="statement not covered" > confidence += 0.1;</span>
}
&nbsp;
<span class="cstat-no" title="statement not covered" > return Math.min(confidence, 1.0);</span>
}
&nbsp;
<span class="fstat-no" title="function not covered" > no</span>rmalizeUnit(unit) {
const unitMap = <span class="cstat-no" title="statement not covered" >{</span>
'm²': 'm²', 'm2': 'm²', 'm³': 'm³', 'm3': 'm³',
'stk': 'stk', 'pakker': 'pakker', 'pakke': 'pakker',
'kg': 'kg', 'timer': 'time', 'time': 'time',
'enheder': 'stk', 'pcs': 'stk'
};
<span class="cstat-no" title="statement not covered" > return unitMap[unit.toLowerCase()] || unit;</span>
}
}
&nbsp;
<span class="cstat-no" title="statement not covered" >module.exports = new OCRService();</span>
&nbsp;</pre></td></tr></table></pre>
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