Enhance error reporting

[ron-at-swgy]

This pull request enhances the SerpApi::SerpApiError class to include additional details:

• serpapi_error - The contents of the error attribute of the parsed JSON response object, if available
• search_params - The original query params used for the search
• response_status - HTTP response status
• search_id - The search id, from the search metadata, from the parsed JSON response object, if available
• decoder - The decoded used in the request (json or html)

With this additional information, client code can print out the search ID for failed searches with something like:

  rescue SerpApi::SerpApiError => e
    puts "#" * 40
    puts "No results found for query: #{query}"
    puts "Search ID: #{e.search_id}"
    puts "Search Response: #{e.response_status}"
    puts "SerpApi Error: #{e.serpapi_error}"
    puts "#" * 40
  end 

This pull request fixes #15

[ron-at-swgy]

Extracted to satisfy Rubocop

[Copilot]

Pull request overview

This pull request enhances error reporting in the SerpApi Ruby client by enriching the SerpApiError exception class with contextual attributes (API error message, search parameters, HTTP status, search ID, and decoder type) and refactoring the error handling logic in the client for better maintainability.

• Enhanced SerpApiError class with five new optional attributes for detailed error context
• Refactored client error handling into focused helper methods with centralized error raising
• Updated version to 1.0.3 and adjusted RuboCop configuration to accommodate the changes

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
lib/serpapi/error.rb	Added new error attributes with validation methods and a to_h serialization method
lib/serpapi/client.rb	Refactored error handling into separate methods (execute_request, handle_response, process_json_response, process_html_response, raise_http_error, raise_parser_error) and updated all error raising to include new context attributes
spec/serpapi/client/client_spec.rb	Updated test expectations to match new error message format
lib/serpapi/version.rb	Bumped version from 1.0.2 to 1.0.3
README.md.erb	Updated gem version reference to 1.0.3
README.md	Updated gem version reference to 1.0.3
.rubocop.yml	Relaxed Metrics/ClassLength and Metrics/ParameterLists constraints to accommodate the enhanced error class

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