fix: correct path to filter_by_sport, adds ApiClient helper

Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    kalshi (0.0.2)
+    kalshi (0.0.3)
       dry-cli
       dry-configurable
       dry-container
@@ -230,7 +230,7 @@ CHECKSUMS
   httpx (1.7.0) sha256=e219689555951f9c13c40862da120cdd2535e1454189bed589f04d7059557154
   io-console (0.8.2) sha256=d6e3ae7a7cc7574f4b8893b4fca2162e57a825b223a177b7afa236c5ef9814cc
   json (2.18.0) sha256=b10506aee4183f5cf49e0efc48073d7b75843ce3782c68dbeb763351c08fd505
-  kalshi (0.0.2)
+  kalshi (0.0.3)
   language_server-protocol (3.17.0.5) sha256=fd1e39a51a28bf3eec959379985a72e296e9f9acfce46f6a79d31ca8760803cc
   lint_roller (1.1.0) sha256=2c0c845b632a7d172cb849cc90c1bce937a28c5c8ccccb50dfd46a485003cc87
   logger (1.7.0) sha256=196edec7cc44b66cfb40f9755ce11b392f21f7967696af15d274dde7edff0203

lib/kalshi/api_client.rb

@@ -2,12 +2,46 @@
 
 module Rubyists
   module Kalshi
-    # API Client Base Class
+    # Base class for API client wrappers that automatically configure URL prefixes
+    #
+    # @example Using ApiClient with a Search namespace
+    #   # For Rubyists::Kalshi::Search::Client, the prefix will be "search"
+    #   class Search::Client < ApiClient
+    #     # API calls will automatically use /search/ prefix
+    #   end
+    #
+    # @example Overriding the automatic prefix
+    #   class CustomClient < ApiClient
+    #     self.prefix = 'custom_api'
+    #   end
     class ApiClient
       attr_reader :client
 
+      # Automatically extract the URL prefix from the module hierarchy
+      #
+      # The prefix is derived by taking the second-to-last component of the
+      # fully qualified class name and converting it to lowercase. For example:
+      #   - Rubyists::Kalshi::Search::Client => "search"
+      #   - Rubyists::Kalshi::Market::Client => "market"
+      #
+      # @return [String] the URL prefix for API calls
+      def self.prefix
+        @prefix ||= to_s.split('::')[-2].downcase
+      end
+
+      # Set a custom URL prefix for API calls, for overriding the default behavior
+      def self.prefix=(value) # rubocop:disable Style/TrivialAccessors
+        @prefix = value
+      end
+
+      # Initialize the ApiClient with a given client instance
+      #
+      # @param client [Rubyists::Kalshi::Client] the client instance to wrap
+      #
+      # @return [void]
       def initialize(client)
         @client = client
+        client.prefix = self.class.prefix
       end
     end
   end

lib/kalshi/client.rb

@@ -20,7 +20,11 @@ def initialize(base_url: Kalshi.config.base_url)
       end
 
       def get(path, params: {})
-        response = @http.get(full_url(path), params:)
+        get_without_prefix(full_url(path), params:)
+      end
+
+      def get_without_prefix(path, params: {})
+        response = @http.get(path, params:)
         handle_response(response)
       end
 

lib/kalshi/search/client.rb

@@ -9,7 +9,7 @@ def tags_by_categories
           SeriesTags.new(client).all
         end
 
-        def filters_by_sports
+        def filters_by_sport
           SportsFilters.new(client).all
         end
       end

lib/kalshi/search/series_tags.rb

@@ -6,7 +6,7 @@ module Search
       # Series Tags API endpoint
       class SeriesTags < Kalshi::Endpoint
         def all
-          client.get('search/tags_by_categories')
+          client.get('tags_by_categories')
         end
       end
     end

lib/kalshi/search/sports_filters.rb

@@ -6,7 +6,7 @@ module Search
       # Sports Filters API endpoint
       class SportsFilters < Kalshi::Endpoint
         def all
-          client.get('search/filters_by_sports')
+          client.get('filters_by_sport')
         end
       end
     end

test/kalshi/api_client_test.rb

@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+require_relative '../helper'
+
+describe Rubyists::Kalshi::ApiClient do
+  # rubocop:disable Lint/ConstantDefinitionInBlock
+  class TestApiClient < Rubyists::Kalshi::ApiClient
+  end
+  # rubocop:enable Lint/ConstantDefinitionInBlock
+
+  describe '.prefix=' do
+    it 'sets the prefix' do
+      TestApiClient.prefix = 'test'
+
+      assert_equal 'test', TestApiClient.prefix
+    end
+  end
+end

test/kalshi/search/client_test.rb

@@ -18,12 +18,12 @@
     end
   end
 
-  describe '#filters_by_sports' do
-    it 'fetches filters by sports' do
-      stub_request(:get, "#{base_url}/search/filters_by_sports")
+  describe '#filters_by_sport' do
+    it 'fetches filters by sport' do
+      stub_request(:get, "#{base_url}/search/filters_by_sport")
         .to_return(status: 200, body: '{"filters_by_sports": {}}', headers: { 'Content-Type' => 'application/json' })
 
-      response = search_client.filters_by_sports
+      response = search_client.filters_by_sport
 
       assert_equal({ filters_by_sports: {} }, response)
     end