module TaskReport

# File lib/task_report.rb, line 56
def continue(task_id)
  return if no_gist?

  @report ||= Report.create_from_gist(report_gist)
  @report.continue(task_id)
  @report.save_to_gist!
rescue Report::TaskAlreadyOngoing, Task::TaskOngoing => e
  puts "Task already underway - #{e.message}"
end

# File lib/task_report.rb, line 92
def current
  return if no_gist?

  @report ||= Report.create_from_gist(report_gist)
  @report.print_current_task
rescue Report::MultipleOngoingTasks
  puts 'Something went wrong. There are multiple ongoing tasks.'
end

# File lib/task_report.rb, line 71
def delete(identifier)
  return if no_gist?

  @report ||= Report.create_from_gist(report_gist)

  case identifier
  when 'today'
    @report.delete_all
  when 'gist'
    puts "Deleting today's report gist"
    Gist.delete(@report.gist_id)
    return
  else
    @report.delete(identifier)
  end

  @report.save_to_gist!
rescue Report::TaskDNE
  puts "Task '#{identifier}' does not exist - nothing to do."
end

# File lib/task_report.rb, line 66
def list
  return if no_gist?
  (@report || Report.create_from_gist(report_gist)).print_tasks
end

# File lib/task_report.rb, line 138
def note(task_id, note)
  return if no_gist?

  @report ||= Report.create_from_gist(report_gist)
  @report.add_note(task_id, note)

  @report.save_to_gist!
rescue Report::TaskDNE
  puts "Task '#{identifier}' does not exist - nothing to do."
end

# File lib/task_report.rb, line 117
def print_range_summary_to_gist(reports, from, to)
  content = reports.map { |r| r.gist_summary_content }.compact.join("\n\n")
  file_name = "task_report_#{from}_-_#{to}.md"

  gist =
    Gist.create_or_update(
      {
        public: false,
        description: "Task Report: #{from} - #{to}",
        files: {
          file_name => {
            content: content
          }
        }
      },
      Time.parse(from)
    )

  puts gist['html_url']
end

# File lib/task_report.rb, line 10
def read_config
  config_path = File.expand_path('~/.task_report_config')
  config = YAML.load(File.read(config_path))
  TaskReport::User.name = config.fetch('user')
  TaskReport::User.api_token = config.fetch('personal_access_token')
rescue Errno::ENOENT
  puts 'Config file not found. It should be located at ~/.task_report_config.'
  puts 'See https://github.com/mpataki/task_report for help.'
  puts 'Exiting'
  exit 1
rescue Psych::SyntaxError
  puts 'The config file must be valid yaml syntax.'
  puts 'Exiting'
  exit 1
rescue KeyError
  puts 'Config key not found.'
  puts 'Required configuration keys are `user` and `personal_access_token`'
  puts 'See an example at https://github.com/mpataki/task_report'
  puts 'Exiting'
  exit 1
end

# File lib/task_report.rb, line 32
def start(new_task_description)
  if report_gist.nil?
    @report ||= Report.create(new_task_description: new_task_description)
  else
    @report ||= Report.create_from_gist(report_gist)
    @report.stop_all_tasks
  end

  @report.start_task(new_task_description)
  @report.save_to_gist!
rescue Report::TaskAlreadyTracked
  puts "Task '#{new_task_description}' is already being tracked. Continuing the task."
  continue(new_task_description)
end

# File lib/task_report.rb, line 47
def stop
  return if no_gist?

  @report ||= Report.create_from_gist(report_gist)
  @report.stop_all_tasks
  @report.save_to_gist!
  puts "All tasks stopped"
end

# File lib/task_report.rb, line 101
def summary(gist, from, to)
  if from
    return range_summary(gist, from, to || Time.now.strftime('%Y-%m-%d'))
  end

  return if no_gist?

  @report ||= Report.create_from_gist(report_gist)

  if gist
    @report.gist_summary
  else
    @report.print_summary
  end
end

# File lib/task_report.rb, line 149
def total
  return if no_gist?

  @report ||= Report.create_from_gist(report_gist)
  @report.total
end

# File lib/task_report.rb, line 174
def find_reports(from, to)
  from_time = Time.parse(from)
  from_epoch = from_time.to_i

  to_epoch =
    if to
      Time.parse(to).to_i
    else
      now = Time.now
      Time.new(now.year, now.month, now.day).to_i
    end

  seconds_in_a_day = 86400
  descriptions = []

  (from_epoch..to_epoch).step(seconds_in_a_day) do |epoch|
    descriptions << Report.gist_description(Time.at(epoch))
  end

  gists = Gist.find_gists_by_descriptions(descriptions, from_time)
  gists.map { |gist| Report.create_from_gist(gist) }
end

# File lib/task_report.rb, line 164
def no_gist?
  if report_gist.nil?
    puts 'No report exists for today - nothing to do.'
    puts 'See `task help` for usage info.'
    return true
  end

  false
end

# File lib/task_report.rb, line 197
def range_summary(gist, from, to)
  reports = find_reports(from, to).reverse

  if gist
    print_range_summary_to_gist(reports, from, to)
  else
    reports.map(&:print_summary)
  end
end

# File lib/task_report.rb, line 157
def report_gist
  @report_gist ||=
    Gist.find_gist_from_today_by_description(
      Report.gist_description
    )
end