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import {PDFDocument, PDFName, PDFParser} from "pdf-lib"; | ||
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export class PDFReceiptDocument extends PDFDocument{ | ||
static async loadReceipt(file: File) { | ||
const ignoreEncryption = false | ||
const updateMetadata = false | ||
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return new Promise((resolve, reject) => { | ||
// FileReader api | ||
const reader = new FileReader(); | ||
reader.readAsArrayBuffer(file); | ||
reader.onload = async () => { | ||
try { | ||
const bytes = new Uint8Array(reader.result); | ||
const context = await PDFParser.forBytesWithOptions(bytes).parseDocument(); | ||
const pdfReceiptDoc = new PDFReceiptDocument(context, ignoreEncryption, updateMetadata); | ||
resolve(pdfReceiptDoc) | ||
} catch (err) { | ||
reject(err.message) | ||
return | ||
} | ||
} | ||
reader.onerror = () => { | ||
reject("Could not load receipt file") | ||
} | ||
}) | ||
} | ||
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public getReceipt(): string | undefined { | ||
const receiptName = PDFName.of('Receipt') | ||
const receipt = this.getInfoDict().lookup(receiptName); | ||
if (!receipt) return undefined; | ||
return receipt.decodeText(); | ||
} | ||
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public getTrackingCode(): string | undefined { | ||
const trackingCodeName = PDFName.of('TrackingCode') | ||
const trackingCode = this.getInfoDict().lookup(trackingCodeName); | ||
if (!trackingCode) return undefined; | ||
return trackingCode.decodeText(); | ||
} | ||
} |
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