Module: Tempest::Commands::Feed

Defined in:
lib/tempest/commands/feed.rb

Constant Summary collapse

DEFAULT_LIMIT = 
50
MAX_LIMIT = 
100

Class Method Summary collapse

Class Method Details

.call(argv:, session:, client:, stdout:, stderr:) ⇒ Object 



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# File 'lib/tempest/commands/feed.rb', line 18

def call(argv:, session:, client:, stdout:, stderr:)
  subcommand, rest = argv.first, argv.drop(1)
  unless %w[me timeline author].include?(subcommand)
    stderr.puts "usage: tempest feed me|timeline|author <handle> [opts]"
    return 64
  end

  opts, positional = parse(rest, stderr: stderr)
  return 64 if opts.nil?

  nsid, base_query = endpoint_for(subcommand, session: session, positional: positional, client: client)
  if nsid.nil?
    stderr.puts "error: feed author requires a handle or DID"
    return 64
  end
  if opts[:limit] > MAX_LIMIT
    stderr.puts "error: --limit must be <= #{MAX_LIMIT}"
    return 64
  end

  items = []
  cursor = nil
  max_pages = 5
  pages = 0
  loop do
    query = base_query.merge("limit" => opts[:limit])
    query["cursor"] = cursor if cursor
    response = client.get(nsid, query: query)
    page_items = Array(response["feed"]).map { |entry| entry["post"] }
    items.concat(page_items)
    pages += 1
    cursor = response["cursor"]
    break if cursor.nil? || cursor.empty?
    break if pages >= max_pages
    break unless opts[:since]
    oldest = page_items.last && page_items.last.dig("record", "createdAt")
    break if oldest.nil?
    break if Time.iso8601(oldest) < opts[:since]
  end
  stderr.puts "warning: pagination cap of #{max_pages} pages reached; result truncated" if pages >= max_pages && !cursor.nil? && !cursor.empty?

  items = filter_by_date(items, opts)
  emit(items, format: opts[:format], stdout: stdout)
  0
end

.emit(items, format:, stdout:) ⇒ Object 



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# File 'lib/tempest/commands/feed.rb', line 122

def emit(items, format:, stdout:)
  format ||= stdout.respond_to?(:tty?) && stdout.tty? ? :line : :json
  case format
  when :json
    views = items.map { |i| Tempest::PostView.from_feed_view(i) }
    Tempest::Output::JsonWriter.new(stdout).write_posts(views)
  when :line
    posts = items.map { |i| Tempest::Post.from_feed_view(i) }
    Tempest::Output::LineWriter.new(stdout).write_posts(posts)
  when :raw
    Tempest::Output::JsonWriter.new(stdout).write_raw({ "feed" => items.map { |i| { "post" => i } } })
  end
end

.endpoint_for(subcommand, session:, positional:, client:) ⇒ Object 



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# File 'lib/tempest/commands/feed.rb', line 97

def endpoint_for(subcommand, session:, positional:, client:)
  case subcommand
  when "me"
    ["app.bsky.feed.getAuthorFeed", { "actor" => session.did }]
  when "timeline"
    ["app.bsky.feed.getTimeline", {}]
  when "author"
    actor = positional.first
    if actor.nil? || actor.empty?
      return [nil, nil]
    end
    did = Tempest::HandleLookup.resolve(actor, client: client)
    ["app.bsky.feed.getAuthorFeed", { "actor" => did }]
  end
end

.filter_by_date(items, opts) ⇒ Object 



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# File 'lib/tempest/commands/feed.rb', line 113

def filter_by_date(items, opts)
  return items if opts[:since].nil? && opts[:until_at].nil?
  items.select do |it|
    ts = it.dig("record", "createdAt")
    t = Time.iso8601(ts)
    (opts[:since].nil? || t >= opts[:since]) && (opts[:until_at].nil? || t < opts[:until_at])
  end
end

.parse(argv, stderr:) ⇒ Object 



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# File 'lib/tempest/commands/feed.rb', line 64

def parse(argv, stderr:)
  opts = { limit: DEFAULT_LIMIT, since: nil, until_at: nil, format: nil }
  positional = []
  i = 0
  while i < argv.length
    case argv[i]
    when /\A--limit=(\d+)\z/ then opts[:limit] = Regexp.last_match(1).to_i; i += 1
    when "--limit"           then opts[:limit] = argv[i + 1].to_i; i += 2
    when /\A--since=(.+)\z/  then opts[:since] = Tempest::DateFilter.parse(Regexp.last_match(1)); i += 1
    when "--since"           then opts[:since] = Tempest::DateFilter.parse(argv[i + 1]); i += 2
    when /\A--until=(.+)\z/  then opts[:until_at] = Tempest::DateFilter.parse(Regexp.last_match(1)); i += 1
    when "--until"           then opts[:until_at] = Tempest::DateFilter.parse(argv[i + 1]); i += 2
    when /\A--format=(\S+)\z/
      sym = Regexp.last_match(1).to_sym
      unless %i[line json raw].include?(sym)
        stderr.puts "error: invalid --format: #{Regexp.last_match(1).inspect}"
        return [nil, nil]
      end
      opts[:format] = sym
      i += 1
    when "--no-color"
      Tempest::REPL::Formatter.color = false if defined?(Tempest::REPL::Formatter)
      i += 1
    else
      positional << argv[i]; i += 1
    end
  end
  [opts, positional]
rescue ArgumentError => e
  stderr.puts "error: #{e.message}"
  [nil, nil]
end