github_commit_graph.rb

module Plugins
 class GithubCommitGraph < Base
 def locals
 { username:, contributions:, stats: }
 end

 private

 def username = settings['username']

 def contributions
 @contributions ||= begin
 query = "query($userName:String!) {
 user(login: $userName){
 contributionsCollection {
 contributionCalendar {
 totalContributions
 weeks {
 contributionDays {
 contributionCount
 date
 }
 }
 }
 }
 }
 }"
 body = { query: query, variables: { userName: username } }
 resp = post('https://api.github.com/graphql', body: body.to_json, headers: headers)
 data = resp.dig('data', 'user', 'contributionsCollection', 'contributionCalendar')

 if data.nil?
 { errors: "Cannot fetch data for #{username}" }
 else
 {
 total: data['totalContributions'],
 commits: data['weeks'].map(&:deep_symbolize_keys)
 }
 end
 end
 end

 def headers
 { 'authorization' => "Bearer #{Rails.application.credentials.plugins.github_commit_graph_token}" }
 end

 # re "Streak" calculations, these may be wrong for some users
 # either A), the 'time-zone' header does not work (https://github.com/orgs/community/discussions/20898)
 # or B), the time zone is only inferred by the token's owner, us! (https://docs.github.com/en/rest/metrics/statistics?apiVersion=2022-11-28#get-the-hourly-commit-count-for-each-day)
 def stats
 return {} if contributions[:commits].nil?

 days = contributions[:commits].flat_map { |week| week[:contributionDays] }
 sorted_days = days.sort_by { |day| Date.parse(day[:date]) }

 {
 longest_streak: longest_streak(sorted_days),
 current_streak: current_streak(sorted_days),
 max_contributions: days.map { |day| day[:contributionCount] }.max,
 average_contributions: average_contributions(days)
 }
 end

 def average_contributions(days)
 total_contributions = days.sum { |day| day[:contributionCount] }
 (total_contributions.to_f / days.size).round(2)
 end

 def longest_streak(days)
 longest = current = 0
 days.each do |day|
 if day[:contributionCount].positive?
 current += 1
 longest = [longest, current].max
 else
 current = 0
 end
 end
 longest
 end

 def current_streak(days)
 streak = 0
 streak += 1 if days.last[:contributionCount].positive?

 days[0..-2].reverse_each do |day|
 break if day[:contributionCount].zero?

 streak += 1
 end
 streak
 end
 end
end