require 'json'
require 'yaml'
require 'erb'

module Adminix
  module Helpers
    module Files
      def self.read_json_file(file)
        content = IO.read(file)
        JSON.parse(content)
      rescue JSON::ParserError
        Helpers::Output.display_error_and_exit(
          "Error reading JSON inside file #{file}"
        )
        {}
      rescue Errno::ENOENT
        Helpers::Output.display_error_and_exit("Error reading file #{file}")
        {}
      end

      def self.read_yaml_file(file)
        content = IO.read(file)
        obj = YAML.safe_load(content)
        if obj.is_a? String
          Helpers::Output.display_error_and_exit("Error reading file #{file}")
          {}
        end
        obj
      rescue Errno::ENOENT
        Helpers::Output.display_error_and_exit("Error reading file #{file}")
        {}
      end

      def self.read_plain_file(file)
        IO.read(file)
      rescue Errno::ENOENT
        Helpers::Output.display_error_and_exit("Error reading file #{file}")
      end

      def self.write_json_file(file, content)
        open(file, 'w') { |f| f.puts(content.to_json) }
      end

      def self.write_yaml_file(file, content)
        open(file, 'w') { |f| f.puts(content.to_yaml) }
      end

      def self.write_plain_file(file, content)
        open(file, 'w') { |f| f.puts(content) }
      end

      def self.rm(file)
        File.delete(file) if File.exist?(file)
      end

      def self.mkdir_p(dirname)
        `mkdir -p #{dirname}`
      end

      def self.touch(file_path)
        `touch #{file_path}`
      end

      def self.file_exists?(file)
        File.exist?(file)
      end

      def self.read_erb_tpl(file, binding)
        path = "#{Adminix.root}/app/views/web/#{file}.erb"
        return unless File.exist?(path)
        template = ERB.new File.read(path), nil, '%'
        template.result(binding)
      end

      def self.read_asset(file)
        path = "#{Adminix.root}/app/assets#{file}"
        return unless File.exist?(path)
        IO.read(path)
      end
    end
  end
end