Order gems alphabetically for consistency

According to RuboCop's Bundler/OrderedGems convention, gems should be sorted in alphabetical order within their section of the Gemfile. Moving gem 'curses' before gem 'httpx' would adhere to this standard.

Apply this diff to reorder the gems:

 gem 'json' 
 gem 'httpx', '~> 1.3'
 gem 'curses'

Change to:

 gem 'json' 
 gem 'curses'
 gem 'httpx', '~> 1.3'

Committable suggestion was skipped due to low confidence.

Use correct syntax for multiline strings in Ruby

Ruby does not support triple quotes (""") for multiline strings. To define a multiline string, you can use a heredoc (<<~BANNER).

Apply this fix to correct the syntax:

-BANNER = """                      _        _ 
-  /\  /\__ ___      _| | _____(_)
- / /_/ / _` \ \ /\ / / |/ / __| |
-/ __  / (_| |\ V  V /|   <\__ \ |
-\/ /_/ \__,_| \_/\_/ |_|\_\___/_|
-
-"""
+BANNER = <<~BANNER
+                      _        _ 
+  /\  /\__ ___      _| | _____(_)
+ / /_/ / _` \ \ /\ / / |/ / __| |
+/ __  / (_| |\ V  V /|   <\__ \ |
+\/ /_/ \__,_| \_/\_/ |_|\_\___/_|
+
+BANNER

Ensure thread-safe initialization of the configuration

If the application is running in a multithreaded environment, lazy initialization of @configuration could lead to race conditions. Eagerly initializing the configuration can prevent potential issues.

Apply this diff to initialize the configuration when the module is loaded:

 class << self
+  @configuration = Configuration.new
   def configuration
-    @configuration ||= Configuration.new
+    @configuration
   end

Initializing @configuration at the class level ensures it's set up before any threads access it.

Consider refactoring to reduce code duplication

The initialize method assigns values to several instance variables using a similar pattern. Refactoring this can make the code more concise and maintainable.

Apply this diff to simplify the assignments:

 def initialize
-    @mocksi_server = get_env('MOCKSI_SERVER') || "https://app.mocksi.ai"
-    @reactor_url = get_env('MOCKSI_REACTOR_URL') || "https://api.mocksi.ai/api/v1/reactor"
-    @upload_url = get_env('MOCKSI_UPLOAD_URL') || "https://api.mocksi.ai/api/v1/upload"
-    @process_url = get_env('MOCKSI_PROCESS_URL') || "https://api.mocksi.ai/api/v1/process"
+    {
+      mocksi_server: "https://app.mocksi.ai",
+      reactor_url: "https://api.mocksi.ai/api/v1/reactor",
+      upload_url: "https://api.mocksi.ai/api/v1/upload",
+      process_url: "https://api.mocksi.ai/api/v1/process"
+    }.each do |attr, default|
+      instance_variable_set("@#{attr}", get_env(attr.to_s.upcase) || default)
+    end
 end

This refactoring uses a hash to store default values and iterates over it to set instance variables dynamically.

Handle missing or invalid process_url configuration

Currently, the code assumes that Hawksi.configuration.process_url is set and valid. If it is nil or invalid, client.post may raise an exception. Consider adding a check to ensure that process_url is present and handle cases where it's missing.

Add exception handling for network errors

Unlike the post_file method, the process_files method does not have a rescue block to handle exceptions that may be raised during the network request. Consider adding exception handling to catch and log any network-related errors.

Apply this diff to add exception handling:

 def process_files
   HTTPX.wrap do |client|
+    begin
       response = client.post(Hawksi.configuration.process_url, headers: { "x-client-id" => @client_uuid })
       if response.is_a?(HTTPX::Response)
         @logger.info "Processing uploaded files. Status: #{response.status}"
       else
         @logger.error "Failed to process files. Error: #{response.error}"
       end
+    rescue => e
+      @logger.error "Exception occurred while processing files: #{e.message}"
+    end
   end
 end

Committable suggestion was skipped due to low confidence.

Use equal matcher to check object identity instead of eq

In the test for memoization on line 14, you are using expect(config1).to eq(config2), which checks for value equality. To ensure that both config1 and config2 refer to the exact same object instance (i.e., memoization), you should use the equal matcher:

- expect(config1).to eq(config2)
+ expect(config1).to equal(config2)

This change will assert that the two variables point to the same object, verifying the memoization effectively.

Simplify Conditional Logic for Request Path Handling

The two conditional statements checking the request path can be combined to improve readability and maintainability. Since both conditions result in the same action (return MocksiHandler.handle(request)), you can merge them into a single condition using start_with? and end_with? methods.

Apply this diff to combine the conditions:

-if request.path.end_with?('/favicon.ico')
-  return MocksiHandler.handle(request)
-end
-
-if request.path.start_with?('/mocksi') || request.path.start_with?('/_') || request.path.start_with?('/api')
-  return MocksiHandler.handle(request)
-end
+if request.path.end_with?('/favicon.ico') || request.path.start_with?('/mocksi', '/_', '/api')
+  return MocksiHandler.handle(request)
+end

This refactor leverages Ruby's ability to pass multiple arguments to start_with?, simplifying the condition.

Consider refactoring handle method to reduce complexity

The handle method has high complexity metrics as indicated by static analysis tools:

• Assignment Branch Condition size: 59.88/23
• Cyclomatic Complexity: 19/7
• Perceived Complexity: 20/8

High complexity can make the code harder to read, maintain, and test. Consider refactoring by extracting some of the logic into smaller, reusable helper methods. This will improve readability and maintainability.

Add exception handling to decompress_deflate method

If the body is not valid deflate-compressed data, Zlib::Inflate.inflate(body) may raise an exception, potentially crashing the application. Consider adding exception handling to handle invalid deflate data gracefully.

Apply this diff to fix the issue:

 def decompress_deflate(body)
+  begin
     Zlib::Inflate.inflate(body)
+  rescue Zlib::DataError
+    # If the body is not actually deflate-compressed, return the original body
+    body
+  end
 end

Avoid exposing internal error messages to clients

Returning internal error messages to the client may expose sensitive information and pose a security risk. It's better to log the error internally and return a generic message to the client.

Apply this diff to fix the issue:

-           [500, { 'Content-Type' => 'text/plain' }, ["Error: #{e.message}"]]
+           # Log the error message internally (implementation depends on your logging setup)
+           # logger.error(e.message)
+           [500, { 'Content-Type' => 'text/plain' }, ["An internal error occurred. Please try again later."]]

Committable suggestion was skipped due to low confidence.

Dynamic configuration for upload URL

The change to use Hawksi.configuration.upload_url is a good improvement, aligning with the overall strategy of using dynamic configurations instead of hardcoded URLs.

However, there are two important issues from previous reviews that still need to be addressed:

1. URI-encode the filename to handle special characters:

 def post_file(client, tar_gz_file)
   filename = File.basename(tar_gz_file)
+  encoded_filename = URI.encode_www_form_component(filename)
-  client.post("#{Hawksi.configuration.upload_url}?filename=#{filename}",
+  client.post("#{Hawksi.configuration.upload_url}?filename=#{encoded_filename}",
               headers: { "x-client-id" => @client_uuid },
               body: File.read(tar_gz_file))
 rescue => e
   @logger.error "Failed to upload #{tar_gz_file}: #{e.message}"
   nil
 end

2. Handle missing or invalid upload_url configuration:

 def post_file(client, tar_gz_file)
+  upload_url = get_config_url('upload_url')
+  return nil if upload_url.nil?
+
   filename = File.basename(tar_gz_file)
   encoded_filename = URI.encode_www_form_component(filename)
-  client.post("#{Hawksi.configuration.upload_url}?filename=#{encoded_filename}",
+  client.post("#{upload_url}?filename=#{encoded_filename}",
               headers: { "x-client-id" => @client_uuid },
               body: File.read(tar_gz_file))
 rescue => e
   @logger.error "Failed to upload #{tar_gz_file}: #{e.message}"
   nil
 end

These changes will improve the robustness and reliability of the post_file method.

Committable suggestion was skipped due to low confidence.