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@michelle0927 michelle0927 commented Apr 4, 2025

Resolves #16099

Summary by CodeRabbit

  • New Features

    • Introduced new actions for compressing PDFs, converting documents to PDF, and merging multiple PDF files.
    • Enhanced file handling with configurable options for file path, filename, and adjustable compression profiles.
    • Improved API interaction for streamlined PDF processing.
  • Chores

    • Updated the package version and added dependency improvements to support new functionalities.
    • Added new utility functions for file path normalization, extension checking, and error handling.

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Walkthrough

This pull request introduces new modules for the pdf4me component that handle PDF conversion, merging, and compression. Additionally, it adds a set of utility functions for file path normalization, extension checking, and temporary file downloading. The pdf4me app has been enhanced with new properties and methods to support these PDF operations, and the package configuration has been updated to include a new dependency and version bump.

Changes

File(s) Change Summary
components/pdf4me/actions/{compress-pdf, convert-to-pdf, merge-pdfs}/… Added three new modules for compressing, converting, and merging PDF files. Each module defines an asynchronous run method that validates file paths, reads files in base64, calls the corresponding pdf4me API method, and downloads the result.
components/pdf4me/common/utils.mjs Introduced utility functions: normalizeFilePath, checkForExtension, and downloadToTmp for handling file paths and temporary downloads.
components/pdf4me/package.json Updated the package version from "0.0.1" to "0.1.0" and added a dependency on @pipedream/platform with version "^3.0.3".
components/pdf4me/pdf4me.app.mjs Expanded the pdf4me app by adding new properties (filePath, filename) and methods (_baseUrl, _makeRequest, convertToPdf, mergePdfs, compressPdf) to support API interactions for PDF operations.

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant ActionModule
    participant Utils
    participant App

    User->>ActionModule: Trigger PDF Action (compress/convert/merge)
    ActionModule->>Utils: Check file extension & normalize file path
    ActionModule->>App: Call corresponding PDF API method
    App->>App: Process API request (_makeRequest)
    App-->>ActionModule: Return processed PDF data
    ActionModule->>Utils: Download file to temporary location
    ActionModule-->>User: Return summary message and file data
Loading

Assessment against linked issues

Objective Addressed Explanation
Convert a document (e.g., DOCX, XLSX, PPTX) to PDF ([#16099] convert-to-pdf)
Merge multiple PDF files into a single PDF ([#16099] merge-pdf)
Compress a PDF file to reduce its size ([#16099] compress-pdf)

Suggested labels

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Suggested reviewers

  • jcortes

Poem

Oh, I’m a rabbit, bounds of joy in sight,
Hopping through new code with all my might,
PDFs now compress, merge, and convert with grace,
Each action a carrot in our coding race,
With every hop, our functions glow bright.
🐰✨ Happy coding under the moonlit night!

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components/pdf4me/common/utils.mjs

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ESLint: 8.57.1

Error [ERR_MODULE_NOT_FOUND]: Cannot find package 'jsonc-eslint-parser' imported from /eslint.config.mjs
at packageResolve (node:internal/modules/esm/resolve:839:9)
at moduleResolve (node:internal/modules/esm/resolve:908:18)
at defaultResolve (node:internal/modules/esm/resolve:1038:11)
at ModuleLoader.defaultResolve (node:internal/modules/esm/loader:557:12)
at ModuleLoader.resolve (node:internal/modules/esm/loader:525:25)
at ModuleLoader.getModuleJob (node:internal/modules/esm/loader:246:38)
at ModuleJob._link (node:internal/modules/esm/module_job:126:49)


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Actionable comments posted: 7

🧹 Nitpick comments (10)
components/pdf4me/actions/merge-pdfs/merge-pdfs.mjs (2)

32-40: Add validation for the response from the API.

The code doesn't validate the response from the mergePdfs API call before attempting to save it.

  const response = await this.pdf4me.mergePdfs({
    $,
    data: {
      docContent: fileContents,
      docName: filename,
    },
    responseType: "arraybuffer",
  });

+  if (!response || response.length === 0) {
+    throw new Error("Received empty response from PDF4me API");
+  }

41-45: Consider adding more detailed success information.

The current success message is generic. Consider enhancing it with information about the number of files merged and the output file size.

  const filedata = utils.downloadToTmp(response, filename);

-  $.export("$summary", "Successfully merged PDF files");
+  $.export("$summary", `Successfully merged ${this.filePaths.length} PDF files into ${filename} (${response.length} bytes)`);
  return filedata;
components/pdf4me/actions/convert-to-pdf/convert-to-pdf.mjs (2)

33-42: Add validation for the API response.

The code should validate the response from the convertToPdf API call.

  const response = await this.pdf4me.convertToPdf({
    $,
    data: {
      docContent: fileContent,
      docName: this.filename,
    },
    responseType: "arraybuffer",
  });

+  if (!response || response.length === 0) {
+    throw new Error("Received empty response from PDF4me API");
+  }

43-46: Enhance success message with file details.

The current success message is generic. Consider enhancing it with information about the converted file.

  const filedata = utils.downloadToTmp(response, this.filename);

-  $.export("$summary", "Successfully converted file to PDF");
+  $.export("$summary", `Successfully converted ${this.filePath} to PDF (${response.length} bytes)`);
  return filedata;
components/pdf4me/common/utils.mjs (2)

3-7: Improve path normalization logic.

The current implementation assumes any path containing "tmp/" is already properly normalized, which may not be true for paths like "example/tmp/file.pdf".

function normalizeFilePath(path) {
-  return path.includes("tmp/")
+  return path.startsWith("/tmp/") || path.startsWith("tmp/")
    ? path
    : `/tmp/${path}`;
}

9-13: Enhance extension checking logic.

The current implementation doesn't handle cases where a filename might contain multiple dots or extensions.

function checkForExtension(filename, ext = "pdf") {
-  return filename.includes(`.${ext}`)
+  return filename.toLowerCase().endsWith(`.${ext.toLowerCase()}`)
    ? filename
    : `${filename}.${ext}`;
}
components/pdf4me/actions/compress-pdf/compress-pdf.mjs (2)

42-48: Consider using asynchronous file operations

Using fs.readFileSync for potentially large PDFs could block the Node.js event loop and cause performance issues.

- const fileContent = fs.readFileSync(filePath, {
-   encoding: "base64",
- });
+ const fileContent = await fs.promises.readFile(filePath, {
+   encoding: "base64",
+ });

61-63: Add file size information to the summary

To provide more value to users, consider adding the original and compressed file sizes to the summary message.

- $.export("$summary", "Successfully compressed PDF file");
+ const originalSize = fs.statSync(filePath).size;
+ const compressedSize = fs.statSync(filedata.path).size;
+ const reductionPercent = ((originalSize - compressedSize) / originalSize * 100).toFixed(2);
+ $.export("$summary", `Successfully compressed PDF file from ${(originalSize/1024).toFixed(2)}KB to ${(compressedSize/1024).toFixed(2)}KB (${reductionPercent}% reduction)`);
components/pdf4me/pdf4me.app.mjs (2)

19-21: Consider versioning the base URL

Best practice is to include API version in the base URL method to make future version changes easier.

_baseUrl() {
-  return "https://api.pdf4me.com/api/v2";
+  const API_VERSION = "v2";
+  return `https://api.pdf4me.com/api/${API_VERSION}`;
}

35-55: Implement consistent documentation for API wrapper methods

The API methods would benefit from JSDoc comments to explain their parameters and return values.

+ /**
+  * Converts a document to PDF format
+  * @param {Object} opts - The options for the conversion
+  * @param {Object} opts.data - The data for the conversion
+  * @param {string} opts.data.docContent - The base64-encoded document content
+  * @param {string} opts.data.docName - The name of the document
+  * @returns {Promise<Object>} The API response
+  */
convertToPdf(opts = {}) {
  return this._makeRequest({
    method: "POST",
    path: "/ConvertToPdf",
    ...opts,
  });
},

Add similar documentation for the other methods.

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  • components/pdf4me/actions/merge-pdfs/merge-pdfs.mjs (1 hunks)
  • components/pdf4me/common/utils.mjs (1 hunks)
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  • components/pdf4me/pdf4me.app.mjs (1 hunks)
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🔇 Additional comments (7)
components/pdf4me/package.json (2)

3-3: Version bumped appropriately for new features.

The version update from 0.0.1 to 0.1.0 follows semantic versioning principles correctly for the addition of new functionalities.


14-17: Dependencies section added correctly.

The addition of the @pipedream/platform dependency is appropriate for the new functionality being introduced. The version constraint is also reasonable.

components/pdf4me/actions/merge-pdfs/merge-pdfs.mjs (1)

5-24: Component definition looks good.

The component metadata and properties are well-defined with clear descriptions and appropriate types. The documentation links provide useful references for users.

components/pdf4me/actions/convert-to-pdf/convert-to-pdf.mjs (1)

5-26: Component definition is well structured.

The component properties and metadata are clearly defined with appropriate documentation references.

components/pdf4me/common/utils.mjs (1)

27-31: Utility exports look good.

The module exports all the utility functions properly.

components/pdf4me/actions/compress-pdf/compress-pdf.mjs (1)

19-34: Look good: Comprehensive optimize profile options

The optimize profile offers various compression types which gives users flexibility in how they want to compress their PDFs.

components/pdf4me/pdf4me.app.mjs (1)

6-17: Good implementation of propDefinitions

The propDefinitions for filePath and filename are well-documented with clear descriptions and proper types.

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Actionable comments posted: 0

🧹 Nitpick comments (2)
components/pdf4me/actions/compress-pdf/compress-pdf.mjs (2)

42-48: Consider using asynchronous file operations.

The code currently uses fs.readFileSync() which blocks the event loop. In a Node.js environment, it's generally better to use asynchronous alternatives.

- const fileContent = fs.readFileSync(filePath, {
-   encoding: "base64",
- });
+ const fileContent = await fs.promises.readFile(filePath, {
+   encoding: "base64",
+ });

59-63: Enhance the success message with compression details.

The current success message is generic. Consider enhancing it with information about the original and compressed file sizes to give users more insight into the effectiveness of the compression.

- $.export("$summary", "Successfully compressed PDF file");
+ const originalSize = fs.statSync(filePath).size;
+ const compressedSize = fs.statSync(filedata).size;
+ const compressionRatio = ((originalSize - compressedSize) / originalSize * 100).toFixed(2);
+ $.export("$summary", `Successfully compressed PDF from ${(originalSize/1024).toFixed(2)}KB to ${(compressedSize/1024).toFixed(2)}KB (${compressionRatio}% reduction)`);
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🔇 Additional comments (4)
components/pdf4me/actions/compress-pdf/compress-pdf.mjs (4)

1-4: LGTM! Import statements are well organized.

The imports look appropriate for the functionality of this component, including the pdf4me app, utility functions, and filesystem module.


5-10: Component metadata is well-defined.

The metadata includes an appropriate key, descriptive name, helpful documentation link, initial version (0.0.1), and correct component type.


11-41: Props are well-structured with comprehensive options.

The props definition is clear and well-organized, with appropriate references to shared prop definitions and a well-defined set of compression options.


49-58: Add error handling for API calls

The API call lacks error handling. If the PDF4me API returns an error, the action will fail without a clear error message.

- const response = await this.pdf4me.compressPdf({
-   $,
-   data: {
-     docContent: fileContent,
-     docName: filename,
-     optimizeProfile: this.optimizeProfile,
-   },
-   responseType: "arraybuffer",
- });
+ try {
+   const response = await this.pdf4me.compressPdf({
+     $,
+     data: {
+       docContent: fileContent,
+       docName: filename,
+       optimizeProfile: this.optimizeProfile,
+     },
+     responseType: "arraybuffer",
+   });
+ } catch (error) {
+   $.export("$summary", `Error compressing PDF: ${error.message}`);
+   throw error;
+ }

jcortes
jcortes previously approved these changes Apr 4, 2025
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Hi @michelle0927 I've added just one minor observation other than that lgtm! Ready for QA!

Co-authored-by: Jorge Cortes <jacortesmahmud@gmail.com>
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Actionable comments posted: 2

♻️ Duplicate comments (2)
components/pdf4me/common/utils.mjs (1)

16-26: Add error handling to file download function.

The downloadToTmp function should handle potential file system errors and validate inputs.

function downloadToTmp(response, filename) {
+  if (!response) {
+    throw new Error("Cannot download empty response");
+  }
+  
+  if (!filename || typeof filename !== "string") {
+    throw new Error("Invalid filename provided");
+  }

  const rawcontent = response.toString("base64");
  const buffer = Buffer.from(rawcontent, "base64");
  const filePath = normalizeFilePath(filename);
-  fs.writeFileSync(filePath, buffer);
+  
+  try {
+    fs.writeFileSync(filePath, buffer);
+  } catch (error) {
+    throw new Error(`Failed to write file to ${filePath}: ${error.message}`);
+  }

  return [
    filename,
    filePath,
  ];
}
components/pdf4me/pdf4me.app.mjs (1)

32-34: ⚠️ Potential issue

Use Basic Authentication for PDF4me.

According to the PDF4me documentation, the Authorization header should contain Basic <APIKey> rather than the raw key. This ensures compatibility with their API.

Apply this diff to fix the header:

-headers: {
-  authorization: this.$auth.api_key,
-},
+headers: {
+  Authorization: `Basic ${this.$auth.api_key}`,
+  "Content-Type": "application/json",
+},
🧹 Nitpick comments (1)
components/pdf4me/pdf4me.app.mjs (1)

36-38: Ensure error details are surfaced.

utils.handleErrorMessage(error); may abstract or suppress some error context. Consider passing the HTTP status and response body to the thrown error for clarity, as previously suggested in past reviews.

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components/pdf4me/common/utils.mjs

[error] 30-30: Change to an optional chain.

Unsafe fix: Change to an optional chain.

(lint/complexity/useOptionalChain)

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🔇 Additional comments (4)
components/pdf4me/pdf4me.app.mjs (4)

1-2: Imports look good.

No issues detected with the new imports from @pipedream/platform and your local utilities file.


7-18: Properties are well-defined.

The new filePath and filename properties correctly guide users to store files under /tmp. This aligns with typical usage in Pipedream. No concerns here regarding naming or data types.


20-22:

❓ Verification inconclusive

Verify API version usage.

You're targeting https://api.pdf4me.com/api/v2. Please confirm that v2 endpoints support all methods (/ConvertToPdf, /Merge, /Optimize) you plan to call.


🏁 Script executed:

#!/bin/bash
# Description: Check for presence and validity of v2 endpoints.
# Expect: references to ConvertToPdf, Merge, Optimize under v2 in PDF4me documentation.
echo "Please verify with official docs or run a test request to confirm availability of these endpoints on v2."

Length of output: 218


Attention: Verify API Version Endpoints

The base URL in components/pdf4me/pdf4me.app.mjs is set to use the v2 API, but the current verification script only echoes a reminder. Please confirm—via the official PDF4me documentation or a test request—that the v2 endpoints (/ConvertToPdf, /Merge, and /Optimize) are indeed supported.


40-59:

✅ Verification successful

POST methods look consistent.

convertToPdf, mergePdfs, and compressPdf properly pass their options to _makeRequest. Ensure the request bodies align with PDF4me-specific requirements (e.g., references to files, parameters).


🏁 Script executed:

#!/bin/bash
# Description: Check method usage references in action files
fd convert-to-pdf.mjs | xargs cat
fd merge-pdfs.mjs | xargs cat
fd compress-pdf.mjs | xargs cat
# Inspect how you're constructing the body for these calls
# Expect properly formed JSON with PDFs or relevant fields 
# as required by PDF4me documentation.

Length of output: 7572


Action: PDF4me POST Request Bodies are Conforming

The PDF4me integration methods in components/pdf4me/pdf4me.app.mjs are correctly constructing POST requests. Verification across the related action files confirms the following:

  • convertToPdf: Reads the file from the specified path (encoding it in base64) and sends a request with docContent and docName.
  • mergePdfs: Constructs an array of base64-encoded file contents passed as docContent along with the document name (docName).
  • compressPdf: Includes the additional optimizeProfile field along with docContent and docName as required.

All request bodies align with PDF4me’s API expectations, and the file references/parameters are accurately provided.

@michelle0927
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/approve

@michelle0927 michelle0927 merged commit 1121f65 into master Apr 8, 2025
11 checks passed
@michelle0927 michelle0927 deleted the issue-16099 branch April 8, 2025 14:43
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[Components] pdf4me

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