class Candid

# File lib/candid.rb, line 7
    def self.snapshot(scripts = [], styles = [], include_js = [], options = {})
  
    options[:id]    ||= 'svg'
    options[:ext]   ||= 'png'
    options[:save]  ||= 'tmp'
    options[:rails] ||= 'false'

    if options[:save] == 'local'
        options[:file_dest] ||= "."
        options[:file_name] ||= File.basename Tempfile.new('candid')
    else # save in tmp
        tmp_file = Tempfile.new('candid')
        if options[:rails] == 'true'
            options[:file_dest] = 'public/tmp'
        else
            options[:file_dest] = File.dirname tmp_file
        end
        options[:file_name] = File.basename tmp_file
    end

    options[:file_name] = options[:file_name] + '.' + options[:ext] 

    new_path  = options[:file_dest] +'/'+ options[:file_name]  
    new_path  = ""  
    file_name = options[:file_name] 
    
    options =  hash_to_s(options)
    tmp_vars = include_js.map { |data| store_tmp_var(data[0], data[1]) }

    system 'phantomjs', candid_gem_root_path+'/lib/candid.js', 
                        candid_gem_root_path,
                        scripts.to_s, 
                        styles.to_s, 
                        tmp_vars.to_s, 
                        options

    { path: new_path, name: file_name }
end

# File lib/candid.rb, line 75
def self.candid_gem_root_path
  File.join(File.dirname(File.expand_path(__FILE__)), '..')
end

# File lib/candid.rb, line 66
def self.hash_to_s(h)
    if h == {}
        "{}"
    else
        "{" + (h.map {|k, v| "\"" + k.to_s + "\"" + ":\""+v+"\""   }).join(",") + "}"
    end
end

# File lib/candid.rb, line 48
def self.store_tmp_var(k, v)
    data = v.to_json
    ref  = k.to_s

    file = Tempfile.new('candid')
    file.write "var #{ref} = #{data};"
    file.close
    
    file.path
end

# File lib/candid.rb, line 59
def self.tmp_img_path
    file = Tempfile.new('candid')
    file.close 
    file.path
end