#!/usr/bin/env ruby

require "./lib/parser"
require "byebug"
require "yaml"
require "json"
require 'active_support/inflector'
require "fileutils"
require "./lib/alula/util"

FileUtils.mkdir_p './data/generated'

## This file is used to generate API resource code from imported API docs
## The generated code is _not_ intended to be used directly, it is created
## so that you can manually move the parts you need into the classes you want
## to update. Feel free to modify this as needed to generate your code.

resource_files = Dir.glob("./data/resource_fixtures/rest/*.yml")

def user_types_to_roles_list(user_type_list)
  role_list = user_type_list.split(', ')
    .map{ |user_type| Alula::Util.camelize(user_type) }
    .map(&:to_sym)
  return "[#{role_list.map(&:inspect).join(', ')}]"
end

resource_files.each do |rf|
  raw = YAML.load_file(rf)
  parsed = OpenStruct.new(raw)

  pp rf

  fields = parsed.fields == false ? [] : parsed.fields.each_with_object([]) do |field, arry|
    arry << "field :#{Alula::Util.underscore(field['name'])},
          type: #{field['name'].match(/date/) ? ":date" : ":string" },
          sortable: #{field['sortable'] == 'true'},
          filterable: #{field['filterable'] == 'true'},
          creatable_by: #{user_types_to_roles_list(field['creatable by'])},
          patchable_by: #{user_types_to_roles_list(field['patchable by'])}
"
  end

  relationships = parsed.relationships == false ? ['# None'] : parsed.relationships.map do |r|
    "relationship :#{r['name']}, type: :'#{r['type']}', cardinality: '#{r['cardinality']}'"
  end

  resource_name = Alula::Util.split_on_word(parsed.name).map(&:singularize)

  template = <<EOD
##
# #{ parsed.description }
# This is an automatically generated class, intended to be used as a reference for updating
# our actual models (/lib/alula/resources) with new code generated from the Alula API docs.
# You should not import, reference, or otherwise include this into the actual gem.
# Keep it in the data folder.
module Generated
  class #{resource_name.map(&:capitalize).join('')}
    extend Alula::ResourceAttributes

    # You should update this to be a slash-separated, literal path to the resource
    # without the prefix /api/v1 or the suffix of an ID
    resource_path '#{parsed.name}'

    # Relationships
    #{relationships.join("\n    ")}

    # Resource Fields
    # Not all params are used at the moment. See Alula::ResourceAttributes for details
    # on how params are parsed,
    #{fields.join("\n    ")}
  end
end
EOD

  path = "./data/generated/#{resource_name.join('_')}.rb"
  File.open(path, "w+") { |f| f.write(template) }
end

puts "Imported resources updated from generated docs. Check yo diffs."