class RedditImage

# 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

# 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'] 
        
        if Dir::exists?"#{@directory}"
                puts "The directory \"#{@directory}\" exists!"
                Dir::chdir("#{@directory}")
        else 
                Dir::mkdir("#{@directory}")
                Dir::chdir("#{@directory}")
        end 

        count_min = 0 
        #count_max = @qty % 100 ? @qty / 100 : "Sorry!"

        if @qty % 100 == 0 
                count_max = @qty / 100
        elsif @qty < 100
                count_max = 1
        else 
                puts "Sorry, not supported in this version"
        end 
        
        while count_min < count_max
                if @qty <= 100
                        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 = "#{@sub}-#{file_name_base}.jpg"
                                        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
                else
                        if count_min > 0
                                self.get_info
                                self.update_data
                        end
                        links = []
                        data.each do |datum|
                                datum = datum['data']
                                if datum['post_hint'] == "image"
                                        links << datum['url_overridden_by_dest']
                                end 
                        end

                        file_name_base = count_min > 0 ? count_min * 100 : 1
                
                        links.each do |link| 
                                if link != nil
                                        file_name = "#{@sub}-#{file_name_base}.jpg"
                                        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
                end 
                count_min += 1 
        end 
 
        Dir::chdir("..")

        return links
end

# 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

# File lib/reddit_junkie.rb, line 41
def update_data
        @after_pointer = @after_pointer_temporary
        #@index = @index + 1
        #@directory = @directory + @index.to_s
end