#!/usr/bin/env python
# -*- coding: utf-8 -*-

import os
import sys

from xml.dom import minidom

from jinja2 import Environment, FileSystemLoader

from gen_view_code.class_type import class_type

PY3 = sys.version_info[0] > '3'


class class_member(object):

    def __init__(self, name, ct):
        self.name = name
        self.class_type = ct


def get_plain_actors(root, res):
    for node in root.childNodes:
        if node.nodeType == node.TEXT_NODE:
            continue
        res.append(node)
        get_plain_actors(node, res)


def save_if_changed(name, content):
    try:
        with open(name, "r") as rd:
            data = rd.read()
            if data == content:
                return
    except IOError:
        pass

    with open(name, "w") as rd:
        rd.write(content)


mp_actor = class_type("spActor", "Actor", "Actor.h")
mp_button = class_type("spButton", "Button", "Button.h")
mp_text = class_type("spTextField", "TextField", "TextField.h")
mp_bar = class_type("spProgressBar", "ProgressBar", "ProgressBar.h")
mp_clip = class_type("spClipRectActor", "ClipRectActor", "ClipRectActor.h")
mp_sprite = class_type("spSprite", "Sprite", "Sprite.h")
mp_sliding = class_type("spSlidingActor", "SlidingActor", "SlidingActor.h")
mp_color = class_type("spColorRectSprite",
                      "ColorRectSprite", "ColorRectSprite.h")
mp_box9sprite = class_type("spBox9Sprite", "Box9Sprite", "Box9Sprite.h")
mp_polygon = class_type("spPolygon", "Polygon", "Polygon.h")
mp_msprite = class_type("spMaskedSprite", "MaskedSprite", "MaskedSprite.h")
mp_view = class_type("spView", "View", "View.h")

def_mappings = (mp_bar,
                mp_clip,
                mp_button,
                mp_text,
                mp_actor,
                mp_sprite,
                mp_sliding,
                mp_color,
                mp_box9sprite,
                mp_polygon,
                mp_msprite)


def get_mapping(lst, name):
    for m in lst:
        if m.className == name:
            return m

    return None

user_mp = None


def find_mapping(name, classes):
    if user_mp:
        mp = get_mapping(user_mp, name)
        if mp:
            return mp

    mp = get_mapping(def_mappings, name)
    if mp:
        return mp

    mp = get_mapping(classes, name)
    if mp:
        return mp

    return None


def gen_classes(nodes, ct, classes):
    classes.add(ct)

    for child in nodes:
        class_mapping = mp_actor

        member = child.attrib["member"]

        res_id = ""
        if "id" in child.attrib:
            res_id = child.attrib["id"]

        if not res_id:
            res_id = os.path.splitext(child.attrib["file"])[0]
            class_mapping = mp_sprite

        if "ref" in child.attrib:
            class_mapping = mp_sprite

        try:
            # print res_id

            class_name = child.attrib["class"]
            class_mapping = find_mapping(class_name, classes)

            if not class_mapping:
                if class_name.endswith("<"):
                    class_name = class_name.rstrip("<")
                    class_mapping = class_type(
                        class_name, "sp" + class_name, class_name,
                        class_name + ".h", ns="", member=res_id,
                        parent=mp_sprite, generated=True)
                    gen_classes(nodes, class_mapping, classes)
                elif class_name.startswith(">"):
                    return
                else:
                    class_mapping = class_type(
                        class_name, "sp" + class_name, class_name,
                        class_name + ".h", ns="")

        except KeyError:
            pass

        classes.add(class_mapping)

        # note: unused variable
        index = child.attrib["order"]
        ct.members.append(class_member(member, class_mapping, res_id))


def gen2(xml_res_file, dest_folder, mappings):
    global user_mp
    user_mp = mappings

    if not os.path.exists(dest_folder):
        os.makedirs(dest_folder)

    xml_res_file = os.path.normpath(xml_res_file)
    xml_res_file = xml_res_file.replace("\\", "/")

    doc = minidom.parse(xml_res_file)
    root = doc.documentElement

    folder = os.path.dirname(os.path.abspath(__file__)) + "/gen_view_code/templates"
    print(folder)

    env = Environment(trim_blocks=True, lstrip_blocks=True,
                      loader=FileSystemLoader(folder))

    class_h_template = env.get_template("class.h")
    class_cpp_template = env.get_template("class.cpp")

    import io

    classes_node = root.getElementsByTagName("class")[0]

    classes = set()

    for class_node in classes_node.childNodes:
        if class_node.nodeType == class_node.TEXT_NODE:
            continue
        res = []
        get_plain_actors(class_node, res)

        class_name = class_node.getAttribute("class")

        local_classes = set()

        parent = find_mapping(class_node.nodeName, classes)

        custom_class = class_type(
            "sp" + class_name, class_name, class_name +
            ".h", ns="", member="", parent=parent, generated=True)

        classes.add(custom_class)
        local_classes.add(custom_class)

        header = io.StringIO()
        cpp = io.StringIO()

        for node in res:
            name = node.getAttribute("name")
            ct = find_mapping(node.nodeName, classes)
            custom_class.members.append(class_member(name, ct))
            classes.add(ct)
            local_classes.add(ct)

        cls = list(local_classes)
        q = 0

        def ff(a, b):
            def cmp(a, b):
                if a < b:
                    return -1
                if a > b:
                    return 1
                return 0
            return cmp(b.ns, a.ns) or cmp(b.primary, a.primary) or cmp(a.className, b.className)

        import functools
        cls.sort(key=functools.cmp_to_key(ff))

        includes = [inc for inc in cls if inc.header]

        args = {"types": cls,
                "ct": custom_class,
                "includes": includes}

        header.write(env.get_template("header.h").render(**args))
        cpp.write(env.get_template("header.cpp").render(**args))

        args = {"ct": custom_class,
                "xml": xml_res_file,
                "members": custom_class.members}

        header.write(class_h_template.render(**args))
        cpp.write(class_cpp_template.render(**args))

        header_name = class_name + ".h"
        cpp_name = class_name + ".cpp"

        gen_code = class_node.getAttribute("gencode")
        if gen_code == "false":
            continue
        save_if_changed(dest_folder + header_name, header.getvalue())
        save_if_changed(dest_folder + cpp_name, cpp.getvalue())


if __name__ == "__main__":
    import argparse
    parser = argparse.ArgumentParser(
        description="generates h/cpp files from oxygine xml")
    parser.add_argument("xml", help="xml file to process")
    parser.add_argument(
        "-d", "--dest", help="destination folder for generated classes", default=".")
    

    args = parser.parse_args()
    gen2(args.xml, args.dest + "/", None)