#!/usr/bin/env python3
import os
import re
import argparse
from collections import defaultdict


style_properties_type = {
    "LV_STYLE_ANIM": "LV_PROPERTY_TYPE_POINTER",
    "LV_STYLE_ARC_COLOR": "LV_PROPERTY_TYPE_COLOR",
    "LV_STYLE_ARC_IMAGE_SRC": "LV_PROPERTY_TYPE_IMGSRC",
    "LV_STYLE_BG_COLOR": "LV_PROPERTY_TYPE_COLOR",
    "LV_STYLE_BG_GRAD": "LV_PROPERTY_TYPE_POINTER",
    "LV_STYLE_BG_GRAD_COLOR": "LV_PROPERTY_TYPE_COLOR",
    "LV_STYLE_BG_IMAGE_RECOLOR": "LV_PROPERTY_TYPE_COLOR",
    "LV_STYLE_BG_IMAGE_SRC": "LV_PROPERTY_TYPE_IMGSRC",
    "LV_STYLE_BITMAP_MASK_SRC": "LV_PROPERTY_TYPE_POINTER",
    "LV_STYLE_BORDER_COLOR": "LV_PROPERTY_TYPE_COLOR",
    "LV_STYLE_COLOR_FILTER_DSC": "LV_PROPERTY_TYPE_POINTER",
    "LV_STYLE_GRID_COLUMN_DSC_ARRAY": "LV_PROPERTY_TYPE_POINTER",
    "LV_STYLE_GRID_ROW_DSC_ARRAY": "LV_PROPERTY_TYPE_POINTER",
    "LV_STYLE_IMAGE_RECOLOR": "LV_PROPERTY_TYPE_COLOR",
    "LV_STYLE_LAST_BUILT_IN_PROP": "LV_PROPERTY_TYPE_INVALID",
    "LV_STYLE_LINE_COLOR": "LV_PROPERTY_TYPE_COLOR",
    "LV_STYLE_OUTLINE_COLOR": "LV_PROPERTY_TYPE_COLOR",
    "LV_STYLE_PROP_INV": "LV_PROPERTY_TYPE_INVALID",
    "LV_STYLE_RECOLOR": "LV_PROPERTY_TYPE_COLOR",
    "LV_STYLE_SHADOW_COLOR": "LV_PROPERTY_TYPE_COLOR",
    "LV_STYLE_TEXT_COLOR": "LV_PROPERTY_TYPE_COLOR",
    "LV_STYLE_TEXT_FONT": "LV_PROPERTY_TYPE_FONT",
    "LV_STYLE_TEXT_OUTLINE_STROKE_COLOR": "LV_PROPERTY_TYPE_COLOR",
    "LV_STYLE_TRANSITION": "LV_PROPERTY_TYPE_POINTER",
    "LV_STYLE_DROP_SHADOW_COLOR": "LV_PROPERTY_TYPE_COLOR",
}


class Property:
    def __init__(self, widget, name, type, index, id):
        self.widget = widget
        self.name = name
        self.type = type
        self.index = index
        self.id = id


def find_headers(directory):
    if os.path.isfile(directory):
        yield directory
        return

    for root, dirs, files in os.walk(directory):
        for file in files:
            if file.endswith('.h'):
                yield os.path.join(root, file)


def read_widget_properties(directory):

    def match_properties(file_path):
        pattern = r'^\s*LV_PROPERTY_ID2?\((\w+),\s*(\w+),\s*(\w+)(,\s*(\w+))?,\s*(\d+)\)'
        with open(file_path, 'r', encoding='utf-8') as file:
            for line in file.readlines():
                match = re.match(pattern, line)
                if match:
                    id = f"LV_PROPERTY_{match.group(1).upper()}_{match.group(2).upper()}"
                    yield Property(
                        match.group(1).lower(),
                        match.group(2).lower(), match.group(3), match.group(4),
                        id)

    def match_styles(file_path):
        pattern_with_value = r'^\s+LV_STYLE_(\w+)\s*=\s*(\d+),'
        pattern_name_only = r'^\s+LV_STYLE_(\w+)\s*,'
        last_value = 0
        process = False
        with open(file_path, 'r', encoding='utf-8') as file:
            for line in file.readlines():
                if re.match("enum _lv_style_id_t", line):
                    process = True
                    continue

                if process and re.match("};", line):
                    return

                if process == False: continue
                match = re.match(pattern_with_value, line)
                name = ""
                if match:
                    name = match.group(1).upper()
                    last_value = int(match.group(2))
                else:
                    match = re.match(pattern_name_only, line)
                    if match:
                        name = match.group(1).upper()
                        last_value += 1
                if name:
                    id = f"LV_PROPERTY_STYLE_{name}"
                    yield Property("style",
                                   match.group(1).lower(), "style",
                                   last_value, id)

    properties_by_widget = defaultdict(list)
    for file_path in find_headers(directory):
        for property in match_properties(file_path):
            properties_by_widget[property.widget].append(property)

        for property in match_styles(file_path):
            properties_by_widget[property.widget].append(property)

        for widget, properties in properties_by_widget.items():
            # sort properties by property name
            properties.sort(key=lambda x: x.name)
            properties_by_widget[widget] = properties

    return properties_by_widget


def write_widget_properties(root_folder, properties_by_widget):
    # Open header file for update.
    pub_header = os.path.join(root_folder, 'include', 'lvgl', 'core', 'lv_obj_property_names.h')
    with open(pub_header, "w") as header:
        header.write(f'''
/**
 * @file lv_obj_property_names.h
 * GENERATED FILE, DO NOT EDIT IT!
 */
#ifndef LV_OBJ_PROPERTY_NAMES_H
#define LV_OBJ_PROPERTY_NAMES_H

#include "../lv_types.h"

#if LV_USE_OBJ_PROPERTY && LV_USE_OBJ_PROPERTY_NAME

''')

        for widget in sorted(properties_by_widget.keys()):
            properties = properties_by_widget[widget]
            file_name = f'lv_{widget}_properties.c'
            output_file = os.path.join(root_folder, 'src', 'widgets', 'property', file_name)

            count = len(properties)
            if widget != 'style' and widget != 'obj':
                guard = f"#if LV_USE_{widget.upper()}"
            else:
                guard = None

            include = "../../lv_public_api.h"

            with open(output_file, 'w') as f:
                f.write(f'''
/**
 * GENERATED FILE, DO NOT EDIT IT!
 * @file {file_name}
 */

#include "{include}"

#if LV_USE_OBJ_PROPERTY && LV_USE_OBJ_PROPERTY_NAME

{guard if guard else ""}
/**
 * {widget.capitalize() + ' widget' if widget != 'style' else 'Style'} property names, name must be in order.
 * Generated code from properties.py
 */
/* *INDENT-OFF* */
const lv_property_name_t lv_{widget}_property_names[{count}] = {{
''')

                for property in properties:
                    name = property.name
                    name_str = '"' + name + '",'
                    f.write(f"    {{{name_str :25} {property.id},}},\n")

                f.write('};\n')
                if guard:
                    f.write(f"#endif /*LV_USE_{widget.upper()}*/\n\n")
                f.write("/* *INDENT-ON* */\n")
                f.write('#endif\n')
            header.write(
                f'    extern const lv_property_name_t lv_{widget}_property_names[{count}];\n'
            )
        header.write('#endif\n')
        header.write('#endif\n')


def write_style_header(root_folder, properties_by_widget):
    properties = properties_by_widget['style']

    header = os.path.join(root_folder, 'include', 'lvgl', 'core', 'lv_style_properties.h')

    with open(header, 'w') as f:
        f.write(f'''
/**
 * GENERATED FILE, DO NOT EDIT IT!
 * @file lv_style_properties.h
 */
#ifndef LV_STYLE_PROPERTIES_H
#define LV_STYLE_PROPERTIES_H

#include "../config/lv_conf_internal.h"
#if LV_USE_OBJ_PROPERTY


/* *INDENT-OFF* */
enum _lv_property_style_id_t {{
''')

        for property in properties:
            name = property.name
            id_type = style_properties_type.get(f"LV_STYLE_{name.upper()}",
                                                "LV_PROPERTY_TYPE_INT")
            f.write(
                f"    LV_PROPERTY_ID(STYLE, {name.upper() + ',' :25} {id_type+',' :28} LV_STYLE_{name.upper()}),\n"
            )

        f.write('};\n\n')
        f.write('#endif\n')
        f.write('#endif\n')


def main(directory):
    """Generate property names"""
    property = read_widget_properties(directory)
    write_widget_properties(directory, property)
    write_style_header(directory, property)


if __name__ == "__main__":
    parser = argparse.ArgumentParser(
        description='Search files and filter lines.')
    parser.add_argument('-d', '--directory',
                        help='Directory to lvgl root path')
    args = parser.parse_args()

    # default directory is the lvgl root path of where this script sits
    if args.directory is None:
        args.directory = os.path.join(os.path.dirname(__file__), "../")

    property_folder = os.path.join(args.directory, 'src', 'widgets', 'property')
    
    # create output directory if it doesn't exist
    os.makedirs(property_folder, exist_ok=True)

    main(args.directory)