WaniKani Stats

Displays user details & review + lesson tracking for WaniKani.

Image preview of WaniKani Stats plugin.

waniKaniStats.5m.rb

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#!/usr/bin/env ruby
# frozen_string_literal: true

# <xbar.title>WaniKani Stats</xbar.title>
# <xbar.version>v0.2.0</xbar.version>
# <xbar.author>Nzebo</xbar.author>
# <xbar.author.github>Nzebo</xbar.author.github>
# <xbar.desc>Displays user details & review + lesson tracking for WaniKani.</xbar.desc>
# <xbar.image>https://i.imgur.com/orRd3Ga.png</xbar.image>
# <xbar.dependencies>ruby</xbar.dependencies>

require 'net/http'
require 'json'
require 'time'
require 'date'


# WaniKani API Token v2 - Retrieved from https://www.wanikani.com/settings/personal_access_tokens
API_TOKEN = ''

COLORS = {
  Radicals: '#00AAFF',
  Kanji: '#FF00AA',
  Vocabulary: '#7c04b7'
}.freeze


##
# Base64 encoded icon for the menu
IMG_BASE64 = 'iVBORw0KGgoAAAANSUhEUgAAACoAAAAgCAYAAABkWOo9AAAKx2lDQ1BJQ0MgUHJv' \
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# class holding all of the user's WaniKani information
class WaniKani
  def initialize(api_token)
    @api_token = api_token
    @reviews = wanikani_api('https://api.wanikani.com/v2/assignments?immediately_available_for_review')
    @lessons = wanikani_api('https://api.wanikani.com/v2/assignments?immediately_available_for_lessons')
    @user = wanikani_api('https://api.wanikani.com/v2/user')
    @summary = wanikani_api('https://api.wanikani.com/v2/summary')
  end

  # method for making API calls to WaniKani
  def wanikani_api(resource)
    uri = URI.parse(resource)
    http = Net::HTTP.new(uri.host, uri.port)
    http.use_ssl = true
    request = Net::HTTP::Get.new uri.request_uri
    request.add_field('Authorization', "Token #{API_TOKEN}")
    response = http.request(request)

    JSON.parse(response.body)
  end

  # calculate the next time a review is available
  def calc_next_review_time
    next_review_time = Time.parse(@summary['data']['next_reviews_at']).localtime

    if next_review_time < Time.now.localtime
      ' Now! | href = https://www.wanikani.com/'
    else
      next_review_time.strftime(' %l %p')
    end

  end

  # calculates the details (such as # of items per category) for assignments
  def calc_assignment_details(type)
    assignment_details = {
        Radicals: 0,
        Kanji: 0,
        Vocabulary: 0
    }

    if type == 'reviews'
      next_review_time = Time.parse(@summary['data']['next_reviews_at']) + 1
      next_review_time = next_review_time.to_datetime.rfc3339.to_s.gsub(/\+[0-9:]+/, 'Z')

      now = Time.now.utc.to_datetime.rfc3339.gsub(/\+[0-9:]+/, 'Z')

      if next_review_time > now
        assignment_data = wanikani_api("https://api.wanikani.com/v2/assignments?available_after=#{now}&available_before=#{next_review_time}")
      else
        assignment_data = @reviews
      end
    elsif type == 'lessons'
      assignment_data = @lessons
    end



    assignment_data['data'].each do |assignment|
      case assignment['data']['subject_type']
      when 'radical'
        assignment_details[:Radicals] += 1
      when 'kanji'
        assignment_details[:Kanji] += 1
      when 'vocabulary'
        assignment_details[:Vocabulary] += 1
      else
        puts "Unknown assignment type: #{assignment['data']['subject_type']}"
      end

    end

    assignment_details

  end

  # calculate how long the user has been on their current level
  def calc_level_duration

    level_data = wanikani_api('https://api.wanikani.com/v2/level_progressions')

    if level_data['data'][level_data['data'].length - 1]['data']['started_at'].nil?
      return 0
    end

    level_start_time = Time.parse(level_data['data'][level_data['data'].length - 1]['data']['started_at'])

    now = Time.now

    ((now - level_start_time) / 3600 / 24).round(2)

  end

  # calculate the percentages of each category for the current level
  def calc_level_percentage

    subject_items = []
    totals = {
      Radical: {
        total: 0,
        passed: 0,
        items: []
      },
      Kanji: {
        total: 0,
        passed: 0,
        items: []
      },
      Vocabulary: {
        total: 0,
        passed: 0,
        items: []
      }
    }

    level_subject_data = wanikani_api("https://api.wanikani.com/v2/assignments?levels=#{@user['data']['level']}")

    reset_time = Time.parse(latest_reset)

    level_subject_data['data'].each do |assignment|

      start_time = assignment['data']['started_at']

      if start_time.nil?
        totals[assignment['data']['subject_type'].capitalize.to_sym][:total] += 1
        next
      end

      next if Time.parse(start_time) < reset_time

      totals[assignment['data']['subject_type'].capitalize.to_sym][:total] += 1
      subject_items.push(
        id: assignment['data']['subject_id'],
        type: assignment['data']['subject_type'].capitalize,
        character: '',
        srs_stage: assignment['data']['srs_stage_name'],
        srs_stage_id: assignment['data']['srs_stage'],
        document_url: ''
      )

      if assignment['data']['passed']
        totals[assignment['data']['subject_type'].capitalize.to_sym][:passed] += 1
      end

    end

    totals = get_assignment_subjects(totals, subject_items)

    totals

  end

  # get subjects data using the provided subject IDs
  def get_assignment_subjects(subject_items, subject_items_array)

    subject_data = wanikani_api("https://api.wanikani.com/v2/subjects?ids=#{subject_items_array.map{|item| item[:id]}.join(',')}")


    subject_items_array.each_with_index do |item, idx|

      match = subject_data['data'].find { |subject| subject['id'] == item[:id] }

      subject_items_array[idx][:character] = match['data']['characters']
      subject_items_array[idx][:document_url] = match['data']['document_url']

      subject_items[match['object'].capitalize.to_sym][:items].push(subject_items_array[idx])

    end

    subject_items

  end

  def latest_reset

    reset_data = wanikani_api("https://api.wanikani.com/v2/resets")

    latest_reset_time = ''

    unless reset_data['data'].empty?
      latest_reset = reset_data['data'][reset_data['data'].length - 1]

      latest_reset_time = Time.parse(latest_reset['data']['created_at']).to_s

    end

    latest_reset_time
  end

  # print all of the data to stdout for bitbar
  def print_data
    if API_TOKEN == ''
      puts 'ERROR'
      puts '---'
      puts 'Please edit the plugin script and add your WaniKani API token to the API_TOKEN variable at the top'
      return
    end
    puts "L: #{@lessons['total_count']} R: #{@reviews['total_count']}"
    puts '---'
    puts "  WaniKani Stats | size=14 color=#BFBFBF trim=false image=#{IMG_BASE64}"
    puts "---"
    puts 'User Profile | size=12 color=#BFBFBF'
    puts "#{@user['data']['username']} - Level: #{@user['data']['level']}"
    puts "Level duration: #{calc_level_duration} days"
    puts '---'
    puts 'Current Level Progress | size=12 color=#BFBFBF'
    level_percentage = calc_level_percentage
    unless level_percentage == 0
      level_percentage.each do |key, val|
        puts "#{key} [#{val[:passed]}/#{val[:total]}] - #{((val[:passed].to_f / val[:total].to_f) * 100).round(0)}%"

        header = ''
        level_percentage[key.to_sym][:items].sort_by!{|obj| obj[:srs_stage_id]}.each do |item|
          if item[:srs_stage] != header
            header = item[:srs_stage]
            color = if header.include? 'Apprentice'
                      '#FF00AA'
                    elsif header.include? 'Guru'
                      '#7c04b7'
                    else
                      '#BFBFBF'
                    end
            puts "-- #{header} | size=12 color=#{color}"
          end
          if !item[:character].nil?
            puts "--  #{item[:character]} | href=#{item[:document_url]}"
          else
            puts "--  Non UTF-8 character | href=#{item[:document_url]}"
          end
        end

      end
    end
    puts '---'
    puts 'Lessons | size=12 color=#BFBFBF'
    calc_assignment_details('lessons').each do |key, val|
      puts "#{key}: #{val} | color=#{COLORS[key]}"
    end
    puts '---'
    puts 'Reviews | size=12 color=#BFBFBF'
    puts "Next reviews:#{calc_next_review_time}"
    calc_assignment_details('reviews').each do |key, val|
      puts "#{key}: #{val} | color=#{COLORS[key]}"
    end

  end
end

w = WaniKani.new(API_TOKEN)
w.print_data