include "primitives.alh"
include "modelling.alh"
include "object_operations.alh"

Boolean function main(model : Element):
	Element elements
	String class
	Element attrs
	Element attr_keys
	String attr_key
	String group
	String elem
	Integer loc
	Integer text_loc
	loc = 10

	Element locations_x
	Element locations_y
	locations_x = dict_create()
	locations_y = dict_create()

	elements = allInstances(model, "abstract/Class")
	while (set_len(elements) > 0):
		class = set_pop(elements)
		attr_keys = dict_keys(getAttributeList(model, class))
		text_loc = 5

		group = instantiate_node(model, "rendered/Group", "")
		instantiate_attribute(model, group, "x", loc)
		instantiate_attribute(model, group, "y", 10)
		dict_add(locations_x, class, loc)
		dict_add(locations_y, class, 10)
		loc = loc + 200

		elem = instantiate_node(model, "rendered/Rectangle", "")
		instantiate_attribute(model, elem, "x", 0)
		instantiate_attribute(model, elem, "y", 0)
		instantiate_attribute(model, elem, "height", 40 + set_len(getInstantiatableAttributes(model, class, "abstract/AttributeLink")) * 20)
		instantiate_attribute(model, elem, "width", 150)
		instantiate_attribute(model, elem, "lineWidth", 2) 
		instantiate_attribute(model, elem, "lineColour", "black")
		instantiate_attribute(model, elem, "fillColour", "white")
		instantiate_link(model, "rendered/contains", "", group, elem)

		String multiplicities
		String lower_card
		String upper_card
		if (element_eq(read_attribute(model, class, "lower_cardinality"), read_root())):
			lower_card = "*"
		else:
			lower_card = cast_v2s(read_attribute(model, class, "lower_cardinality"))
		if (element_eq(read_attribute(model, class, "upper_cardinality"), read_root())):
			upper_card = "*"
		else:
			upper_card = cast_v2s(read_attribute(model, class, "upper_cardinality"))
		multiplicities = ((("[" + lower_card) + "..") + upper_card) + "]"

		elem = instantiate_node(model, "rendered/Text", "")
		instantiate_attribute(model, elem, "x", 5)
		instantiate_attribute(model, elem, "y", 3)
		instantiate_attribute(model, elem, "lineWidth", 1)
		instantiate_attribute(model, elem, "lineColour", "black")
		instantiate_attribute(model, elem, "text", string_join(list_read(string_split(class, "/"), 1), "  " + multiplicities))
		instantiate_link(model, "rendered/contains", "", group, elem)

		elem = instantiate_node(model, "rendered/Line", "")
		instantiate_attribute(model, elem, "x", 0)
		instantiate_attribute(model, elem, "y", 20)
		instantiate_attribute(model, elem, "targetX", 150)
		instantiate_attribute(model, elem, "targetY", 20)
		instantiate_attribute(model, elem, "lineWidth", 1)
		instantiate_attribute(model, elem, "lineColour", "black")
		instantiate_attribute(model, elem, "arrow", False)
		instantiate_link(model, "rendered/contains", "", group, elem)

		attrs = getInstantiatableAttributes(model, class, "abstract/AttributeLink")
		attr_keys = dict_keys(attrs)
		while (dict_len(attr_keys) > 0):
			attr_key = set_pop(attr_keys)
			elem = instantiate_node(model, "rendered/Text", "")
			instantiate_attribute(model, elem, "x", 5)
			instantiate_attribute(model, elem, "y", text_loc + 20)
			instantiate_attribute(model, elem, "lineWidth", 1)
			instantiate_attribute(model, elem, "lineColour", "black")
			instantiate_attribute(model, elem, "text", (attr_key + " : ") + cast_v2s(list_read(string_split(attrs[attr_key], "/"), 1)))
			instantiate_link(model, "rendered/contains", "", group, elem)
			text_loc = text_loc + 15

	elements = allInstances(model, "abstract/Association")
	while (set_len(elements) > 0):
		class = set_pop(elements)
		attr_keys = dict_keys(getAttributeList(model, class))

		group = instantiate_node(model, "rendered/Group", "")
		instantiate_attribute(model, group, "x", 0)
		instantiate_attribute(model, group, "y", 0)

		elem = instantiate_node(model, "rendered/Line", "")
		instantiate_attribute(model, elem, "x", locations_x[readAssociationSource(model, class)])
		instantiate_attribute(model, elem, "y", locations_y[readAssociationSource(model, class)])
		instantiate_attribute(model, elem, "targetX", locations_x[readAssociationSource(model, class)])
		instantiate_attribute(model, elem, "targetY", locations_y[readAssociationDestination(model, class)])
		instantiate_attribute(model, elem, "lineWidth", 1)
		instantiate_attribute(model, elem, "lineColour", "black")
		instantiate_attribute(model, elem, "arrow", False)
		instantiate_link(model, "rendered/contains", "", group, elem)

		elem = instantiate_node(model, "rendered/Line", "")
		instantiate_attribute(model, elem, "x", locations_x[readAssociationSource(model, class)])
		instantiate_attribute(model, elem, "y", locations_y[readAssociationDestination(model, class)])
		instantiate_attribute(model, elem, "targetX", locations_x[readAssociationDestination(model, class)])
		instantiate_attribute(model, elem, "targetY", locations_y[readAssociationDestination(model, class)])
		instantiate_attribute(model, elem, "lineWidth", 1)
		instantiate_attribute(model, elem, "lineColour", "black")
		instantiate_attribute(model, elem, "arrow", True)
		instantiate_link(model, "rendered/contains", "", group, elem)

		while (set_len(attr_keys) > 0):
			attr_key = set_pop(attr_keys)
			log((("  " + attr_key) + " = ") + cast_v2s(read_attribute(model, class, attr_key)))

	return True!