module MovieMasher::FilterHelpers

# File lib/graphs/filter_helpers.rb, line 9
def mm_cmp(param_string, _mash, _scope)
  params = __params_from_str(param_string)
  param0 = Evaluate.equation(params[0], true)
  param1 = Evaluate.equation(params[0], true)
  (param0 > param1 ? params[2] : params[3])
end

# File lib/graphs/filter_helpers.rb, line 16
def mm_dir_horz(param_string, _mash, _scope)
  if param_string.empty?
    raise(Error::JobInput, "mm_dir_horz no parameters #{param_string}")
  end

  params = __params_from_str(param_string)
  # puts "mm_dir_horz #{param_string}} #{params.join ','}"
  case params[0].to_i # direction value
  when 0, 2 # center with no change
    '((in_w-out_w)/2)'
  when 1, 4, 5
    "((#{params[2]}-#{params[1]})*#{params[3]})"
  when 3, 6, 7
    "((#{params[1]}-#{params[2]})*#{params[3]})"
  else
    raise(Error::JobInput, "unknown direction #{params[0]}")
  end
end

# File lib/graphs/filter_helpers.rb, line 35
def mm_dir_vert(param_string, _mash, _scope)
  if param_string.empty?
    raise(Error::JobInput, "mm_dir_vert no parameters #{param_string}")
  end

  params = __params_from_str(param_string)
  # puts "mm_dir_vert #{param_string} #{params.join ','}"
  case params[0].to_i # direction value
  when 1, 3 # center with no change
    '((in_h-out_h)/2)'
  when 0, 4, 7
    "((#{params[1]}-#{params[2]})*#{params[3]})"
  when 2, 5, 6
    "((#{params[2]}-#{params[1]})*#{params[3]})"
  else
    raise(Error::JobInput, "unknown direction #{params[0]}")
  end
end

# File lib/graphs/filter_helpers.rb, line 65
def mm_fontfamily(param_string, mash, _scope)
  params = __params_from_str(param_string)
  font_id = params.join(',')
  font = __find_font(font_id, mash)
  raise(Error::JobInput, 'font has no family') unless font[:family]

  font[:family]
end

# File lib/graphs/filter_helpers.rb, line 54
def mm_fontfile(param_string, mash, _scope)
  params = __params_from_str(param_string)
  font_id = params.join ','
  font = __find_font(font_id, mash)
  unless font[:cached_file]
    raise(Error::JobInput, "font has not been cached #{font}")
  end

  font[:cached_file]
end

# File lib/graphs/filter_helpers.rb, line 74
def mm_horz(param_string, mash = nil, scope = nil)
  __horz_vert(:mm_width, param_string, mash, scope)
end

# File lib/graphs/filter_helpers.rb, line 78
def mm_max(param_string, mash, scope)
  __max_min(:max, param_string, mash, scope)
end

# File lib/graphs/filter_helpers.rb, line 82
def mm_min(param_string, mash, scope)
  __max_min(:min, param_string, mash, scope)
end

# File lib/graphs/filter_helpers.rb, line 86
def mm_paren(param_string, _mash, _scope)
  params = __params_from_str(param_string)
  "(#{params.join ','})"
end

# File lib/graphs/filter_helpers.rb, line 91
def mm_textfile(param_string, _mash, scope)
  job = scope[:mm_job]
  output = scope[:mm_output]
  path = Path.concat(job.output_path(output), "#{SecureRandom.uuid}.txt")
  params = __params_from_str(param_string)
  output[:commands] << { content: params.join(','), file: path }
  path
end

# File lib/graphs/filter_helpers.rb, line 100
def mm_vert(param_string, mash = nil, scope = nil)
  __horz_vert(:mm_height, param_string, mash, scope)
end

# File lib/graphs/filter_helpers.rb, line 104
def rgb(param_string, _mash = nil, _scope = nil)
  params = __params_from_str(param_string)
  format(RGB_FORMAT, *params)
end

# File lib/graphs/filter_helpers.rb, line 109
def rgba(param_string, _mash = nil, _scope = nil)
  params = __params_from_str(param_string)
  alpha = params.pop.to_f
  result = format(RGB_FORMAT, *params)
  "#{result}@#{alpha}"
end