# frozen_string_literal: true

require "json"
require "bloomy/utils/get_user_id"

# Class to handle all the operations related to scorecards
# @note
#   This class is already initialized via the client and usable as `client.scorecard.method`
class Scorecard
  include Bloomy::Utilities::UserIdUtility

  # Initializes a new Scorecard instance
  #
  # @param conn [Object] the connection object to interact with the API
  def initialize(conn)
    @conn = conn
  end

  # Retrieves the current week details
  #
  # @return [Hash] a hash containing current week details
  # @example
  #   client.scorecard.current_week
  #   #=> { id: 123, week_number: 24, week_start: "2024-06-10", week_end: "2024-06-16" }
  def current_week
    response = @conn.get("weeks/current").body
    {
      id: response["Id"],
      week_number: response["ForWeekNumber"],
      week_start: response["LocalDate"]["Date"],
      week_end: response["ForWeek"]
    }
  end

  # Retrieves the scorecards for a user or a meeting.
  #
  # @param user_id [Integer, nil] the ID of the user (defaults to initialized user_id)
  # @param meeting_id [Integer, nil] the ID of the meeting
  # @param show_empty [Boolean] whether to include scores with nil values (default: false)
  # @param week_offset [Integer, nil] offset for the week number to filter scores
  # @raise [ArgumentError] if both `user_id` and `meeting_id` are provided
  # @return [Array<Hash>] an array of hashes containing scorecard details
  # @example
  #   # Fetch scorecards for the current user
  #   client.scorecard.list
  #
  #   # Fetch scorecards for a specific user
  #   client.scorecard.list(user_id: 42)
  #
  #   # Fetch scorecards for a specific meeting
  #   client.scorecard.list(meeting_id: 99)
  # @note
  #  The `week_offset` parameter is useful when fetching scores for previous or future weeks.
  #  For example, to fetch scores for the previous week, you can set `week_offset` to -1.
  #  To fetch scores for a future week, you can set `week_offset` to a positive value.
  def list(user_id: nil, meeting_id: nil, show_empty: false, week_offset: nil)
    raise ArgumentError, "Please provide either `user_id` or `meeting_id`, not both." if user_id && meeting_id

    if meeting_id
      response = @conn.get("scorecard/meeting/#{meeting_id}").body
    else
      user_id ||= self.user_id
      response = @conn.get("scorecard/user/#{user_id}").body
    end

    scorecards = response["Scores"].map do |scorecard|
      {
        id: scorecard["Id"],
        measurable_id: scorecard["MeasurableId"],
        accountable_user_id: scorecard["AccountableUserId"],
        title: scorecard["MeasurableName"],
        target: scorecard["Target"],
        value: scorecard["Measured"],
        week: scorecard["Week"],
        week_id: scorecard["ForWeek"],
        updated_at: scorecard["DateEntered"]
      }
    end

    if week_offset
      week_data = current_week
      week_id = week_data[:week_number] + week_offset
      scorecards.select! { |scorecard| scorecard[:week_id] == week_id }
    end

    scorecards.select! { |scorecard| scorecard[:value] || show_empty } unless show_empty
    scorecards
  end

  # Updates the score for a measurable item for a specific week.
  #
  # @param measurable_id [Integer] the ID of the measurable item.
  # @param score [Numeric] the score to be assigned to the measurable item.
  # @param week_offset [Integer] the number of weeks to offset from the current week (default is 0).
  # @return [Boolean] true if the score was successfully updated, false otherwise.
  # @example
  #  client.scorecard.score(measurable_id: 123, score: 5)
  #  #=> true
  # @note
  #  The `week_offset` parameter is useful when updating scores for previous weeks.
  #  For example, to update the score for the previous week, you can set `week_offset` to -1.
  #  To update a future week's score, you can set `week_offset` to a positive value.
  def score(measurable_id:, score:, week_offset: 0)
    week_data = current_week
    week_id = week_data[:week_number] + week_offset

    response = @conn.put("measurables/#{measurable_id}/week/#{week_id}", {value: score}.to_json)
    response.success?
  end
end