處理發票

async function compileDocFile(json, inputFile, outputPdf) {
    try {
        // configurations
        const credentials =  adobe.Credentials
            .serviceAccountCredentialsBuilder()
            .fromFile("./src/pdftools-api-credentials.json")
            .build();

        // Capture the credential from app and show create the context
        const executionContext = adobe.ExecutionContext.create(credentials);

        // create the operation
        const documentMerge = adobe.DocumentMerge,
            documentMergeOptions = documentMerge.options,
            options = new documentMergeOptions.DocumentMergeOptions(json, documentMergeOptions.OutputFormat.PDF);

        const operation = documentMerge.Operation.createNew(options);

        // Pass the content as input (stream)
        const input = adobe.FileRef.createFromLocalFile(inputFile);
        operation.setInput(input);

        // Async create the PDF
        let result = await operation.execute(executionContext);
        await result.saveAsFile(outputPdf);
    } catch (err) {
        console.log('Exception encountered while executing operation', err);
    }
}

// Create one report and send it back
try {
    console.log(\`[INFO] generating the report...\`);
    const fileContent = fs.readFileSync(\`./public/documents/raw/\${vendor}\`,
    'utf-8');
    const parsedObject = JSON.parse(fileContent);

    await pdf.compileDocFile(parsedObject,
    \`./public/documents/template/Adobe-Invoice-Sample.docx\`,
    \`./public/documents/processed/output.pdf\`);

    await pdf.applyPassword("p@55w0rd", './public/documents/processed/output.pdf',
    './public/documents/processed/output-secured.pdf');

    console.log(\`[INFO] sending the report...\`);
    res.status(200).render("preview", { page: 'invoice', filename: 'output.pdf' });
} catch(error) {
    console.log(\`[ERROR] \${JSON.stringify(error)}\`);
    res.status(500).render("crash", { error: error });
}

async function applyPassword(password, inputFile, outputFile) {
    try {
        // Initial setup, create credentials instance.
        const credentials = adobe.Credentials
        .serviceAccountCredentialsBuilder()
        .fromFile("./src/pdftools-api-credentials.json")
        .build();

        // Create an ExecutionContext using credentials
        const executionContext = adobe.ExecutionContext.create(credentials);
        // Create new permissions instance and add the required permissions
        const protectPDF = adobe.ProtectPDF,
        protectPDFOptions = protectPDF.options;
        // Build ProtectPDF options by setting an Owner/Permissions Password, Permissions,
        // Encryption Algorithm (used for encrypting the PDF file) and specifying the type of content to encrypt.
        const options = new protectPDFOptions.PasswordProtectOptions.Builder()
        .setOwnerPassword(password)
        .setEncryptionAlgorithm(protectPDFOptions.EncryptionAlgorithm.AES_256)
        .build();

        // Create a new operation instance.
        const protectPDFOperation = protectPDF.Operation.createNew(options);

        // Set operation input from a source file.
        const input = adobe.FileRef.createFromLocalFile(inputFile);
        protectPDFOperation.setInput(input);

        // Execute the operation and Save the result to the specified location.
        let result = await protectPDFOperation.execute(executionContext);

        result.saveAsFile(outputFile);
    } catch (err) {
        console.log('Exception encountered while executing operation', err);
    }
}