module Lookbook
  class ConfigStore
    CONFIG_FILE = "config/app.yml"

    delegate_missing_to :store
    attr_reader :store

    def initialize(config = nil)
      @store = Store.new(config, recursive: true)
    end

    def project_name=(name)
      store[:project_name] = name == false ? nil : name
    end

    def page_paths=(paths = nil)
      store[:page_paths] ||= []
      store[:page_paths] += paths.to_a
    end

    def preview_paths=(paths = nil)
      store[:preview_paths] ||= []
      store[:preview_paths] += paths.to_a
    end

    def preview_display_params
      Lookbook.logger.warn "The `preview_display_params` config option has been renamed to `preview_display_options` and will be removed in v2.0"
      store[:preview_display_options]
    end

    def preview_display_params=(options)
      Lookbook.logger.warn "The `preview_display_params` config option has been renamed to `preview_display_options` and will be removed in v2.0"
      store[:preview_display_options] = options.to_h
    end

    def listen_extensions=(extensions = nil)
      store[:listen_extensions] ||= []
      store[:listen_extensions] += extensions.to_a
      store[:listen_extensions].uniq!
    end

    def markdown_options=(options = nil)
      store[:markdown_options] ||= {}
      store[:markdown_options].merge!(options.to_h)
    end

    def ui_theme=(name)
      name = name.to_s
      if Theme.valid_theme?(name)
        store[:ui_theme] = name
      else
        raise ConfigError.new("'#{name}' is not a valid Lookbook theme. ", scope: "app.config")
      end
    end

    def ui_theme_overrides(&block)
      if block
        yield store[:ui_theme_overrides]
      else
        store[:ui_theme_overrides]
      end
    end

    def runtime_parsing=(value)
      Lookbook.logger.warn "The `runtime_parsing` config option has been deprecated and will be removed in v2.0"
    end

    def preview_srcdoc=(enable)
      Lookbook.logger.warn "The `preview_srcdoc` config option is deprecated and will be removed in v2.0"
    end

    def self.init_from_config(env: Rails.env)
      new(default_config(env: env))
    end

    def self.default_config(env: Rails.env)
      ConfigLoader.call(CONFIG_FILE, env: env)
    end
  end
end