class RetroWaveImage

# File lib/photofunia_retro-wave.rb, line 13
def initialize(h)

        assert h[:text1].to_s.length<=15 , "Length of text1 exceeds 15 characters"
        assert h[:text2].to_s.length<=12 , "Length of text2 exceeds 12 characters"
        assert h[:text3].to_s.length<=25 , "Length of text3 exceeds 25 characters"
        assert h[:bcg].to_i.between?(1,5), "Background ID is not between 1 and 5"
        assert h[:txt].to_i.between?(1,4), "Text style ID is not between 1 and 4"

        @content = {
                bcg: h[:bcg].to_i,
                txt: h[:txt].to_i,
                text1: h[:text1].to_s,
                text2: h[:text2].to_s,
                text3: h[:text3].to_s
        }

end

# File lib/photofunia_retro-wave.rb, line 31
def generate
        conn = Faraday.new "https://photofunia.com"
        resp = conn.post("/categories/all_effects/retro-wave?server=2",{"current-category": "all_effects"}.merge(@content))
        @location = resp.headers["location"]
        result = conn.get @location
        @raw_url = result.body.match(%r{<a[^<>]*href="([^"]+)"[^<>]*>\s*Large\s*</a>}m)[1]
        @raw = Faraday.get(@raw_url).body
end

# File lib/photofunia_retro-wave.rb, line 40
def inspect
        return "#<RetroWaveImage content=#{@content.inspect}>"
end

# File lib/photofunia_retro-wave.rb, line 46
def save(location="")

        unless @raw
                puts "Content not generated yet, doing that now"
                generate
        end

        if File.directory?(location)
                fname = sprintf "%s/%s.photofunia.80s.jpg", File.expand_path(location), @location.split(?/)[-1]
                File.write(fname,@raw)
                return fname
        else
                if location==""
                        location = sprintf "%s/%s.photofunia.80s.jpg", File.expand_path(location), @location.split(?/)[-1]
                end
                location.end_with?(".jpg") || location+=".jpg"
                #p location
                File.write(location,@raw)
                return location
        end
end

# File lib/photofunia_retro-wave.rb, line 7
def assert(x,t=nil)
        x || raise(ArgumentError, "Assertion failed#{t ? ": #{t}" : ""}")
end