module Api
  module V1
    class AccountsController < ApplicationController
      def show
        render json: user_json(current_user)
      end

      def update
        name = params[:name].to_s.strip
        if name.blank?
          return render json: { error: "Name is required" }, status: :unprocessable_entity
        end

        if current_user.update(name: name)
          render json: user_json(current_user)
        else
          render json: { error: current_user.errors.full_messages.join(", ") }, status: :unprocessable_entity
        end
      end

      def password
        result = Users::ChangePassword.call(
          user: current_user,
          current_password: params[:current_password],
          password: params[:password],
          password_confirmation: params[:password_confirmation]
        )

        unless result.ok?
          return render json: { error: password_error_message(result.error) }, status: :unprocessable_entity
        end

        render json: { message: "Password updated" }
      end

      private

      def user_json(user)
        {
          id: user.id,
          email: user.email,
          name: user.name,
          role: user.role
        }
      end

      def password_error_message(code)
        case code
        when :current_incorrect then "Current password is incorrect"
        when :too_short then "Password must be at least 8 characters"
        when :too_long then "Password cannot exceed 72 characters"
        when :too_weak
          "Password must include at least 3 of: lowercase, uppercase, number, symbol"
        when :same_as_current then "New password must be different from the current password"
        when :mismatch then "Passwords do not match"
        else "Unable to update password"
        end
      end
    end
  end
end