Cách so sánh văn bản trong Node.JS

const { EmailApi, Configuration } = require('asposeemailcloud');
const config = new Configuration({
    clientId: process.env.ASPose_CLIENT_ID || 'YOUR_CLIENT_ID',
    clientSecret: process.env.ASPose_CLIENT_SECRET || 'YOUR_CLIENT_SECRET'
});
const emailApi = new EmailApi(config);

const fs = require('fs');
function readEmailFile(filePath) {
    return fs.readFileSync(filePath);
}

const { CompareOptions } = require('asposeemailcloud');
const compareOpts = new CompareOptions();
compareOpts.ignoreCase = true;
compareOpts.ignoreWhitespace = true;
compareOpts.ignorePunctuation = false;
compareOpts.similarityThreshold = 0.8; // 80%

compareOpts.leftEmail = leftBytes;
compareOpts.rightEmail = rightBytes;
const result = await emailApi.compare(compareOpts);
console.log(`Similarity: ${result.similarity}, IsSimilar: ${result.isSimilar}`);

// Compare Text in Emails using Aspose.Email Cloud SDK for Node.js

const fs = require('fs');
const path = require('path');
const { EmailApi, CompareOptions, Configuration } = require('asposeemailcloud');

// -----------------------------------------------------------------------------
// Configuration – replace with your Aspose Cloud credentials
// -----------------------------------------------------------------------------
const config = new Configuration({
    clientId: process.env.ASPose_CLIENT_ID || 'YOUR_CLIENT_ID',
    clientSecret: process.env.ASPose_CLIENT_SECRET || 'YOUR_CLIENT_SECRET'
});
const emailApi = new EmailApi(config);

// -----------------------------------------------------------------------------
// Helper: read an .eml file and return its raw bytes (Buffer)
// -----------------------------------------------------------------------------
function readEmailFile(filePath) {
    return fs.readFileSync(filePath);
}

// -----------------------------------------------------------------------------
// Compare two email bodies and return similarity (0‑1)
// -----------------------------------------------------------------------------
async function compareEmailTexts(leftPath, rightPath, options) {
    const leftBytes = readEmailFile(leftPath);
    const rightBytes = readEmailFile(rightPath);

const compareOpts = new CompareOptions();
    compareOpts.leftEmail = leftBytes;
    compareOpts.rightEmail = rightBytes;
    compareOpts.ignoreCase = options.ignoreCase ?? true;
    compareOpts.ignoreWhitespace = options.ignoreWhitespace ?? true;
    compareOpts.ignorePunctuation = options.ignorePunctuation ?? false;
    compareOpts.similarityThreshold = options.similarityThreshold ?? 0.8; // default 80%

// API call – returns { similarity: number, isSimilar: boolean }
    const result = await emailApi.compare(compareOpts);
    return result;
}

// -----------------------------------------------------------------------------
// Batch processing – compare a reference email against many others
// -----------------------------------------------------------------------------
// Performance tip: limit parallelism to avoid overwhelming the service.
// Here we process 5 emails concurrently.
async function batchCompare(referenceEmailPath, emailsFolder, options) {
    const files = fs.readdirSync(emailsFolder)
        .filter(f => f.toLowerCase().endsWith('.eml'))
        .map(f => path.join(emailsFolder, f));

const concurrency = 5;
    let index = 0;
    const results = [];

async function worker() {
        while (true) {
            const i = index++;
            if (i >= files.length) break;
            const targetPath = files[i];
            try {
                const res = await compareEmailTexts(referenceEmailPath, targetPath, options);
                results.push({
                    target: path.basename(targetPath),
                    similarity: res.similarity,
                    isSimilar: res.isSimilar
                });
                console.log(`[${path.basename(targetPath)}] Similarity: ${res.similarity.toFixed(3)} – ${res.isSimilar ? 'Similar' : 'Different'}`);
            } catch (err) {
                console.error(`Error comparing ${targetPath}:`, err.message);
            }
        }
    }

// launch workers
    const workers = [];
    for (let i = 0; i < concurrency; i++) workers.push(worker());
    await Promise.all(workers);
    return results;
}

// -----------------------------------------------------------------------------
// Main execution
// -----------------------------------------------------------------------------
(async () => {
    try {
        const referenceEmail = path.resolve(__dirname, 'reference.eml'); // reference email
        const emailsDir = path.resolve(__dirname, 'emails'); // folder with .eml files to compare

const compareOptions = {
            ignoreCase: true,
            ignoreWhitespace: true,
            ignorePunctuation: false,
            similarityThreshold: 0.75 // 75% similarity required to be considered similar
        };

console.log('Starting batch comparison...');
        const batchResults = await batchCompare(referenceEmail, emailsDir, compareOptions);

// Example: summarize results
        const similarCount = batchResults.filter(r => r.isSimilar).length;
        console.log(`\nBatch completed. ${similarCount} out of ${batchResults.length} emails are similar to the reference.`);
    } catch (err) {
        console.error('Unexpected error:', err);
    }
})();

curl -X POST "https://api.aspose.cloud/connect/token" \
     -H "Content-Type: application/x-www-form-urlencoded" \
     -d "grant_type=client_credentials&client_id=YOUR_CLIENT_ID&client_secret=YOUR_CLIENT_SECRET"

curl -X PUT "https://api.aspose.cloud/v4.0/email/storage/file/left.eml" \
     -H "Authorization: Bearer YOUR_ACCESS_TOKEN" \
     -H "Content-Type: application/octet-stream" \
     --data-binary @left.eml

curl -X PUT "https://api.aspose.cloud/v4.0/email/storage/file/right.eml" \
     -H "Authorization: Bearer YOUR_ACCESS_TOKEN" \
     -H "Content-Type: application/octet-stream" \
     --data-binary @right.eml

curl -X POST "https://api.aspose.cloud/v4.0/email/compare" \
     -H "Authorization: Bearer YOUR_ACCESS_TOKEN" \
     -H "Content-Type: application/json" \
     -d '{
           "leftEmail": "left.eml",
           "rightEmail": "right.eml",
           "ignoreCase": true,
           "ignoreWhitespace": true,
           "ignorePunctuation": false,
           "similarityThreshold": 0.75
         }'

npm install @asposecloud/aspose-email-cloud