# frozen_string_literal: true

require './lib/pkparse/client'

class API::V1::PokemonController < API::V1::ApplicationController
  def create
    @pokemon = Pokemon.new(new_pokemon_params)

    unless @pokemon.save
      @error = APIError::BaseError.new('Failed to create pokemon.')
      render partial: 'error', status: :unprocessable_entity
    end
  end

  def destroy
    @pokemon = Pokemon.find(params[:id])

    if @pokemon.destroy
      render :show
    else
      @error = APIError::BaseError.new('Failed to delete pokemon.')
      render partial: 'error', status: :unprocessable_entity
    end
  end

  def index
    @pokemon = Pokemon.all
  end

  def show
    @pokemon = Pokemon.find_by(id: params[:id])

    unless @pokemon
      @error = APIError::BaseError.new("Pokemon with 'id'=#{params[:id]} was not found.")
      render partial: 'error', status: :not_found
    end
  end

  def upload
    files = params[:pokemon]
    response = pkparse_client.parse(files)

    Pokemon.transaction do
      @pokemon = Pokemon.create!(response.pokemon.map(&:to_h))
    end

    render :index
  rescue PKParse::Error => e
    @error = APIError::BaseError.new(e.message, internal_error: e)
    render partial: 'error', status: :unprocessable_entity
  rescue ActiveRecord::ActiveRecordError => e
    PKParse.logger.error("Failed to commit parsed results: #{e}\n#{e.backtrace.join("\n")}")

    @error = APIError::BaseError.new('Failed to commit the uploaded pokemon.', internal_error: e)
    render partial: 'error', status: :unprocessable_entity
  end

  private

    def new_pokemon_params
      params.require(:pokemon).permit(
        :id, :pokedex_number, :nickname
      )
    end

    def pkparse_client
      # There may be some configuration we'll provide in the future that would
      # benefit from instantiating the client in this way
      @pkparse_client ||= PKParse::Client.new
    end
end