module EhReport

# File lib/eh_report.rb, line 73
def build_detail(result)
  event = result[:item]
  index = result[:index]
  listed = result[:listed]

  IrcReply.card(
    tag: TAG,
    title: "##{index} \u00b7 #{event[:title]}",
    body_lines: detail_body_lines(event),
    footer_parts: [FOOTER_SOURCE, "##{index} of #{listed}"]
  )
end

# File lib/eh_report.rb, line 69
def build_error(message)
  IrcReply.error(tag: TAG, message: message)
end

# File lib/eh_report.rb, line 31
def build_list(result)
  items = Array(result[:items])
  if items.empty?
    return IrcReply.card(
      tag: TAG,
      title: TITLE,
      body_lines: [
        "No open challenges with prizes found.",
        "Browse: #{CTFTIME_URL}"
      ],
      footer_parts: [FOOTER_SOURCE, "sorted by prize"]
    )
  end

  body_lines = items.each_with_index.map { |event, index| format_line(index + 1, event) }
  footer_parts = [
    FOOTER_SOURCE,
    "#{TextUtil.format_count(result[:listed])} listed",
    "sorted by prize"
  ]

  IrcReply.card(
    tag: TAG,
    title: TITLE,
    body_lines: body_lines,
    footer_parts: footer_parts
  )
end

# File lib/eh_report.rb, line 86
def build_not_found(index, listed)
  IrcReply.card(
    tag: TAG,
    title: DETAIL_TITLE,
    body_lines: [
      "Challenge ##{index} not found.",
      "Pick a number from 1 to #{listed} after !eh list."
    ],
    footer_parts: [FOOTER_SOURCE]
  )
end

# File lib/eh_report.rb, line 60
def build_usage
  IrcReply.card(
    tag: TAG,
    title: TITLE,
    body_lines: [EhSearch.usage_message],
    footer_parts: [FOOTER_SOURCE]
  )
end

# File lib/eh_report.rb, line 98
def detail_body_lines(event)
  lines = []
  closing = event[:finish_at].utc.strftime("%d %b %Y UTC")
  meta = [
    event[:format].to_s.strip,
    event[:prize_label].to_s.strip,
    "closes #{closing}"
  ].reject(&:empty?)
  lines << meta.join(" \u00b7 ") unless meta.empty?

  start_line = detail_start_line(event)
  lines << start_line unless start_line.empty?

  prizes_line = detail_prizes_line(event)
  lines << prizes_line unless prizes_line.empty?

  description = event[:description].to_s.strip
  unless description.empty?
    lines << TextUtil.truncate(description, DESCRIPTION_LIMIT)
  end

  url_lines = detail_url_lines(event)
  lines.concat(url_lines)

  lines
end

# File lib/eh_report.rb, line 135
def detail_prizes_line(event)
  prizes_text = event[:prizes_text].to_s.strip
  prize_label = event[:prize_label].to_s.strip
  return "" if prizes_text.empty?
  return "" if prize_label.casecmp?(prizes_text)
  return "" if prizes_text.casecmp?(prize_label)

  prizes_text
end

# File lib/eh_report.rb, line 125
def detail_start_line(event)
  start_at = event[:start_at]
  host = event[:host].to_s.strip
  host = event[:url].to_s.strip if host.empty?
  parts = []
  parts << "Starts #{start_at.utc.strftime('%d %b %Y UTC')}" if start_at
  parts << host unless host.empty?
  parts.join(" \u00b7 ")
end

# File lib/eh_report.rb, line 145
def detail_url_lines(event)
  lines = []
  url = event[:url].to_s.strip
  ctftime_url = event[:ctftime_url].to_s.strip
  lines << url unless url.empty?
  lines << ctftime_url if !ctftime_url.empty? && ctftime_url != url
  lines
end

# File lib/eh_report.rb, line 154
def format(result)
  case result[:error]
  when :usage
    build_usage
  when :fetch
    build_error("CTFtime unavailable right now. Try again later or browse #{CTFTIME_URL}")
  when :not_found
    build_not_found(result[:index], result[:listed])
  when nil
    result[:item] ? build_detail(result) : build_list(result)
  else
    build_list(result)
  end
end

# File lib/eh_report.rb, line 24
def format_line(index, event)
  closing = event[:finish_at].utc.strftime("%d %b %Y UTC")
  host = event[:host].to_s.strip
  host = event[:url].to_s.strip if host.empty?
  "#{index}. #{event[:title]} \u2014 #{event[:prize_label]} \u2014 closes #{closing} \u2014 #{host}"
end