# frozen_string_literal: true

require 'rails_helper'

RSpec.describe Llm::Models do
  describe '.providers' do
    it 'loads provider metadata from the config' do
      expect(described_class.providers).to include(
        'openai' => include('display_name' => 'OpenAI')
      )
    end
  end

  describe '.features' do
    it 'keeps every feature default in the allowed model list' do
      described_class.features.each do |feature_key, config|
        expect(config['models']).to include(config['default']), "#{feature_key} default model must be allowed"
      end
    end

    it 'references existing models from every feature' do
      described_class.features.each do |feature_key, config|
        missing_models = config['models'].reject { |model_name| described_class.models.key?(model_name) }

        expect(missing_models).to be_empty, "#{feature_key} references missing models: #{missing_models.join(', ')}"
      end
    end

    it 'routes document and conversation FAQ generation independently' do
      expect(described_class.default_model_for('document_faq_generation')).to eq('gpt-4.1-mini')
      expect(described_class.default_model_for('conversation_faq_generation')).to eq('gpt-5.2')
    end
  end

  describe '.models' do
    it 'references existing providers from every model' do
      missing_providers = described_class.models.filter_map do |model_name, config|
        provider = config['provider']
        next if described_class.providers.key?(provider)

        "#{model_name}: #{provider}"
      end

      expect(missing_providers).to be_empty
    end
  end

  describe '.feature_config' do
    it 'returns model metadata for a feature' do
      config = described_class.feature_config('editor')

      expect(config[:default]).to eq('gpt-4.1-mini')
      expect(config[:models].first).to include(
        id: 'gpt-4.1-mini',
        display_name: 'GPT-4.1 Mini',
        provider: 'openai',
        credit_multiplier: 1
      )
    end
  end
end