Class: RedditImage

Inherits:
Object
  • Object
show all
Defined in:
lib/reddit_junkie.rb

Instance Method Summary collapse

Constructor Details

#initialize(sub, qty = 25, directory = "images", endpoint = nil, after_pointer = nil) ⇒ RedditImage

Returns a new instance of RedditImage.



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# File 'lib/reddit_junkie.rb', line 6

def initialize(sub, qty=25, directory="images", endpoint=nil, after_pointer=nil)
	@sub = sub
	@qty = qty
	@directory = directory
	@endpoint = endpoint 
	@after_pointer = after_pointer
	@after_pointer_temporary = nil 
	@index = 0
end

Instance Method Details

#download_images ⇒ Object 



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# File 'lib/reddit_junkie.rb', line 47

def download_images 
	if @endpoint == nil
		if @after_pointer == nil
			response = HTTParty.get("https://reddit.com/r/#{@sub}.json?limit=#{@qty}", headers: {"User-agent" => "Reddit Image Downloader 1.0"})
		else 
			response = HTTParty.get("https://reddit.com/r/#{@sub}.json?limit=#{@qty}&after=#{@after_pointer}", headers: {"User-agent" => "Reddit Image Downloader 1.0"})
		end 
	else 
		if @after_pointer == nil 
			response = HTTParty.get("https://reddit.com/r/#{@sub}/#{@endpoint}.json?limit=#{@qty}", headers: {"User-agent" => "Reddit Image Downloader 1.0"})
		else 
			response = HTTParty.get("https://reddit.com/r/#{@sub}/#{@endpoint}.json?limit=#{@qty}&after=#{@after_pointer}", headers: {"User-agent" => "Reddit Image Downloader 1.0"})
		end
	end

	json_response = JSON.parse(response.body)
	data = json_response['data']['children'] 
		
	Dir::mkdir("#{@directory}")
	Dir::chdir("#{@directory}")

	links = []
	data.each do |datum|
		datum = datum['data']
		if datum['post_hint'] == "image"
			links << datum['url_overridden_by_dest']
		end 
	end

	file_name_base = 1

	links.each do |link| 
		if link != nil
			file_name = "#{file_name_base}"
			final_image = File.open(file_name, "wb")
			final_image.write(HTTParty.get(link))
			puts "Wrote on #{file_name}"
			file_name_base += 1
			sleep 0.5
			final_image.close 
		end 
	end 

	Dir::chdir("..")

	return links
end

#get_info ⇒ Object 



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# File 'lib/reddit_junkie.rb', line 16

def get_info
	puts "Going to crawl: "
	puts "https://reddit.com/r/#{@sub}"

	if @endpoint == nil
		if @after_pointer == nil
			response = HTTParty.get("https://reddit.com/r/#{@sub}.json?limit=#{@qty}", headers: {"User-agent" => "Reddit Image Downloader 1.0"})
		else 
			response = HTTParty.get("https://reddit.com/r/#{@sub}.json?limit=#{@qty}&after=#{@after_pointer}", headers: {"User-agent" => "Reddit Image Downloader 1.0"})
		end 
	else 
		if @after_pointer == nil 
			response = HTTParty.get("https://reddit.com/r/#{@sub}/#{@endpoint}.json?limit=#{@qty}", headers: {"User-agent" => "Reddit Image Downloader 1.0"})
		else 
			response = HTTParty.get("https://reddit.com/r/#{@sub}/#{@endpoint}.json?limit=#{@qty}&after=#{@after_pointer}", headers: {"User-agent" => "Reddit Image Downloader 1.0"})
		end
	end

	after_pointer = JSON.parse(response.body)
	after_pointer = after_pointer['data']['after']

	puts "The value of \"after\" pointer is: #{after_pointer}"
	@after_pointer_temporary = after_pointer
end

#update_data ⇒ Object 



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# File 'lib/reddit_junkie.rb', line 41

def update_data
	@after_pointer = @after_pointer_temporary
	@index = @index + 1
	@directory = @directory + @index.to_s 
end