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Contents
# frozen_string_literal: true
require 'json'
module Telegram
module Bot
class Client
# Encodes nested hashes and arrays as json and extract File objects from them
# to the top level. Top-level File objects are handled by httpclient.
# More details: https://core.telegram.org/bots/api#sending-files
module RequestBodyFormatter
extend self
def format(body, action)
body = body.dup
case action.to_s
when 'sendMediaGroup'
extract_files_from_array!(body, :media)
when 'editMessageMedia'
replace_field(body, :media) do |value|
files = {}
extract_files_from_hash(value, files).tap { body.merge!(files) }
end
end
body.each do |key, val|
body[key] = val.to_json if val.is_a?(Hash) || val.is_a?(Array)
end
end
private
# Detects field by symbol or string name and replaces it with mapped value.
def replace_field(hash, field_name)
field_name = [field_name.to_sym, field_name.to_s].find { |x| hash.key?(x) }
hash[field_name] = yield hash[field_name] if field_name
end
def extract_files_from_array!(hash, field_name)
replace_field(hash, field_name) do |value|
break value unless value.is_a?(Array)
files = {}
value.map { |x| extract_files_from_hash(x, files) }.
tap { hash.merge!(files) }
end
end
# Replace File objects with `attach` URIs. File objects are added into `files` hash.
def extract_files_from_hash(hash, files)
return hash unless hash.is_a?(Hash)
hash.transform_values do |value|
if value.is_a?(File)
arg_name = "_file#{files.size}"
files[arg_name] = value
"attach://#{arg_name}"
else
value
end
end
end
end
end
end
end
Version data entries
3 entries across 3 versions & 1 rubygems