download_instagram_images

gistfile1.rb

# /usr/bin/ruby
# download_instagram_images.rb

require "open-uri"
require "json"

@uid = "260732811"
@access_token = "277504095.59c578a.6aed864be0794247a1c0318221b03d7b"

@url = "https://api.instagram.com/v1/users/#{@uid}/media/recent?access_token=#{@access_token}"
@image_count = 0
@images = []

# 150x150
@download_thumbnail = false

# 306x306
@download_low_resolution = false

# 640x640
@download_standard_resolution = true

def get_next_url
	if @uid.to_s == '' || @access_token.to_s == ''
		puts "URL Error!! #{@url}"
		return
	end

	if @url.to_s == ''
		return
	end

	content = open(@url).read
	json_data = JSON.parse(content)

	success = json_data["meta"]["code"] == 200
	if success
		data = json_data["data"]
		data.each do |dic|
			@images << dic["images"]
		end

		pagination = json_data["pagination"]
		@url = pagination["next_url"]
		@image_count += data.count
		puts "Current've got #{@image_count} images"

		get_next_url
	else
		puts "Finish parse!!"
	end
end

def download_images

	if !@download_thumbnail && !@download_low_resolution && !@download_standard_resolution
		puts "Nothing to download!"
		return
	end
	
	if not File.exist?("./instagram")
			Dir.mkdir("instagram")
	end

	@images.each do |dic|

		puts "There are #{@image_count} images need to download..."

		if @download_thumbnail
			thumbnail_path = "instagram/thumbnail"
			url = dic["thumbnail"]["url"]
			download(url, thumbnail_path)
		end

		if @download_low_resolution
			low_resolution_path = "instagram/lowResolution"
			url = dic["low_resolution"]["url"]
			download(url, low_resolution_path)
		end

		if @download_standard_resolution
			standard_resolution_path = "instagram/standardResolution"
			url = dic["standard_resolution"]["url"]
			download(url, standard_resolution_path)
		end
		@image_count -= 1
	end
end


def download(image_url, to_path)
	if image_url.to_s == '' || to_path.to_s == ''
		puts "Parameter error!!, skip it."
		return
	end

	if not File.exist?("./" + to_path)
		Dir.mkdir(to_path)
	end

	filename = File.basename(String(URI.parse(image_url)))

	begin
		File.write(to_path + "/" + filename, open(image_url).read)
	rescue Exception => e
		puts e
	end
end

def start
	puts "Parsing...."
	get_next_url

	puts "Downloading..."
	download_images

	puts "Finish!!"
end

start