# frozen_string_literal: true

require 'json'

module ActiveObject
  module Hash

    def assert_valid_keys(*valid_keys)
      valid_keys.flatten!

      each_key do |key|
        next if valid_keys.include?(key)

        raise ArgumentError,
              "Unknown key: #{key.inspect}. Valid keys are: #{valid_keys.map(&:inspect).join(', ')}"
      end
    end

    def assert_valid_keys!(*valid_keys)
      if empty?
        raise ArgumentError,
              "Empty hash. Valid keys are: #{valid_keys.map(&:inspect).join(', ')}"
      else
        assert_valid_keys(*valid_keys)
      end
    end

    def compact
      select { |_, val| !val.nil? }
    end

    def compact!
      reject! { |_, val| val.nil? }
    end

    # rubocop:disable Lint/UnusedMethodArgument
    def collect_keys(&block)
      return enum_for(:collect_keys) unless block_given?

      collect { |key, _| yield(key) }
    end

    def collect_values(&block)
      return enum_for(:collect_values) unless block_given?

      collect { |_, val| yield(val) }
    end
    # rubocop:enable Lint/UnusedMethodArgument

    def deep_merge(other_hash, &block)
      dup.deep_merge!(other_hash, yield(block))
    end

    # rubocop:disable Metrics/MethodLength
    def deep_merge!(other_hash, &block)
      other_hash.each_pair do |current_key, other_value|
        this_value = self[current_key]

        self[current_key] = if this_value.is_a?(Hash) && other_value.is_a?(Hash)
                              this_value.deep_merge(other_value, yield(block))
                            elsif block_given? && key?(current_key)
                              yield(current_key, this_value, other_value)
                            else
                              other_value
                            end
      end

      self
    end
    # rubocop:enable Metrics/MethodLength

    def demote(key)
      return self unless key?(key)

      merge(key => delete(key))
    end

    def demote!(key)
      replace(demote(key))
    end

    def denillify(value = 0)
      each { |key, val| self[key] = val.nil? ? value : val }
    end

    def denillify!(value = 0)
      replace(denillify(value))
    end

    def dig(key, *rest)
      value = (self[key] rescue nil)

      return if value.nil?
      return value if rest.empty?
      return value.dig(*rest) if value.respond_to?(:dig)
    end

    def except(*keys)
      dup.except!(*keys)
    end

    def except!(*keys)
      keys.flatten.each { |key| delete(key) }
      self
    end

    def extract!(*keys)
      keys.each_with_object({}) { |key, hash| hash[key] = delete(key) if key?(key) }
    end

    def hmap(&block)
      dup.hmap!(&block)
    end

    # rubocop:disable Lint/UnusedMethodArgument
    def hmap!(&block)
      inject({}) { |hash, (key, val)| hash.merge(yield(key, val)) }
    end
    # rubocop:enable Lint/UnusedMethodArgument

    def nillify
      dup.nillify!
    end

    def nillify!
      each do |key, val|
        self[key] = nil if !val.nil? && (val.try(:blank?) || val.try(:to_s).blank?)
      end
    end

    def only(*keys)
      dup.only!(*keys)
    end

    def only!(*keys)
      hash = {}
      keys.flatten.each { |key| hash[key] = self[key] if key?(key) }
      replace(hash)
    end

    def only_fill(*keys, placeholder: nil)
      dup.only_fill!(*keys, placeholder: placeholder)
    end

    def only_fill!(*keys, placeholder: nil)
      hash = {}
      keys.flatten.each { |key| hash[key] = key?(key) ? self[key] : placeholder }
      replace(hash)
    end

    def pair?(key, value)
      self[key] == value
    end

    def promote(key)
      return self unless key?(key)

      { key => delete(key) }.merge(self)
    end

    def promote!(key)
      replace(promote(key))
    end

    def rename_keys(*keys)
      dup.rename_keys!(*keys)
    end

    def rename_keys!(*keys)
      keys = ::Hash[*keys.flatten]
      keys.each { |key, val| self[val] = delete(key) if self[key] }
      self
    end

    def reverse_merge(other_hash)
      other_hash.merge(self)
    end

    def reverse_merge!(other_hash)
      replace(reverse_merge(other_hash))
    end

    def sample
      key = sample_key
      [key, fetch(key)]
    end

    def sample!
      key, value = sample
      delete(key)
      [key, value]
    end

    def sample_key
      hash_keys = keys
      hash_keys.at(::Random.rand(hash_keys.length - 1))
    end

    def sample_key!
      key, = sample
      delete(key)
      key
    end

    def sample_value
      fetch(sample_key)
    end

    def sample_value!
      key, value = sample
      delete(key)
      value
    end

    def shuffle
      ::Hash[to_a.sample(length)]
    end

    def shuffle!
      replace(shuffle)
    end

    def slice(*keys)
      keys.flatten.each_with_object({}) { |key, hsh| hsh[key] = self[key] if key?(key) }
    end

    def slice!(*keys)
      omit = slice(*self.keys - keys)
      hash = slice(*keys)

      hash.default = default
      hash.default_proc = default_proc if default_proc

      replace(hash)
      omit
    end

    def stringify_keys
      dup.stringify_keys!
    end

    def stringify_keys!
      each_with_object({}) { |(key, val), options| options[key.to_s] = val }
    end

    def strip
      select { |_, val| !val.blank? }
    end

    def strip!
      reject! { |_, val| val.blank? }
    end

    def symbolize_keys
      dup.symbolize_keys!
    end

    def symbolize_keys!
      each_with_object({}) { |(key, val), options| options[(key.to_sym rescue key) || key] = val }
    end

    def symbolize_and_underscore_keys
      dup.symbolize_and_underscore_keys!
    end

    def symbolize_and_underscore_keys!
      each_with_object({}) do |(key, val), options|
        options[(key.to_s.tr(' ', '_').underscore.to_sym rescue key) || key] = val
      end
    end

    def to_o
      JSON.parse(to_json, object_class: OpenStruct)
    end

    def transform_keys(&block)
      dup.transform_keys!(&block)
    end

    # rubocop:disable Lint/UnusedMethodArgument
    def transform_keys!(&block)
      return enum_for(:transform_keys!) unless block_given?

      each_key { |key| self[yield(key)] = delete(key) }
      self
    end
    # rubocop:enable Lint/UnusedMethodArgument

    def transform_values(&block)
      dup.transform_values!(&block)
    end

    # rubocop:disable Lint/UnusedMethodArgument
    def transform_values!(&block)
      return enum_for(:transform_values!) unless block_given?

      each { |key, val| self[key] = yield(val) }
    end
    # rubocop:enable Lint/UnusedMethodArgument

    def vacant?(key)
      self[key].blank?
    end

  end
end

Hash.include(ActiveObject::Hash) if ActiveObject.configuration.autoload_hash