import ast
import json
import logging
import os
import random


logger = logging.getLogger(__name__)


def walk_files(path, endpoint='.py'):
    file_list = []
    for root, dirs, files in os.walk(path):
        for file in files:
            file_path = os.path.join(root, file)
            if file_path.endswith(endpoint):
                file_list.append(file_path)
    return file_list


def write_to_json(file_path, output_path):
    types = os.listdir(file_path)
    json_input = list()
    for directory in types:
        for file_name in walk_files(file_path + "/" + directory):
            try:
                with open(file_name, 'r', encoding='utf-8') as file:
                    content = file.read()
            except Exception as e:
                logger.error("failed write: " + file_name)
                pass
            json_input.append({
                "func": content,
                "type": directory,
                "type_index": types.index(directory),
                "path": file_name
            })
    random.shuffle(json_input)
    length = len(json_input)
    with open(output_path + "train.jsonl", 'w+') as train_out:
        train_json = json.dumps(json_input[:int(7 * length / 10)])
        train_out.write(train_json)
    with open(output_path + "test.jsonl", 'w+') as test_out:
        test_json = json.dumps(json_input[int(7 * length / 10): int(9 * length / 10)])
        test_out.write(test_json)
    with open(output_path + "eval.jsonl", 'w+') as eval_out:
        eval_json = json.dumps(json_input[int(9 * length / 10):])
        eval_out.write(eval_json)


def write_content_to_file(content, file_path):
    if not os.path.exists(file_path[:file_path.rindex("/")]):
        os.makedirs(file_path[:file_path.rindex("/")])
    try:
        with open(file_path, 'w+') as file_out:
            file_out.write(content)
    except:
        print(file_path)
        pass


def split_file(file_dir, output_dir, endpoint=".py"):
    if not os.path.exists(output_dir):
        os.makedirs(output_dir)
    for file_path in walk_files(file_dir, endpoint):
        with open(file_path, 'r',encoding='utf8') as file:
            content = file.read()
        try:
            root = ast.parse(content)
        except Exception as e:
            print("错误明细：", e.__class__.__name__, e, file_path)
            continue
        file_id = 1
        for node in root.body:
            if isinstance(node, ast.FunctionDef):
                new_file_name = file_path.replace(file_dir, output_dir).replace(".py", "_" + str(file_id) + ".py")
                write_content_to_file(ast.get_source_segment(content, node), new_file_name)
                file_id += 1
            elif isinstance(node, ast.ClassDef):
                for son in node.body:
                    if isinstance(son, ast.FunctionDef):
                        new_file_name = file_path.replace(file_dir, output_dir).replace(".py",
                                                                                        "_" + str(file_id) + ".py")
                        write_content_to_file(ast.get_source_segment(content, son), new_file_name)
                        file_id += 1


def split_file_by_func(file_path):
    """

    :param file_path:
    :return: [func_name: (func_content, func_node of ast)]
    """
    with open(file_path, 'r',encoding='utf8') as file:
        content = file.read()
    root = None
    func_content = {}
    try:
        root = ast.parse(content)
        for node in root.body:
            if isinstance(node, ast.FunctionDef):
                func_content[node.name] = (ast.get_source_segment(content, node), node)
            elif isinstance(node, ast.ClassDef):
                class_name = node.name
                for son in node.body:
                    if isinstance(son, ast.FunctionDef):
                        func_name = class_name + '.' + node.name
                        func_content[func_name] = (ast.get_source_segment(content, son), son)
    except Exception as e:
        logger.error(e.__class__.__name__ + " " + file_path)
    return func_content


def load_json(json_file):
    with open(json_file, 'r') as load_f:
        load_dict = json.load(load_f)
    return load_dict


def write_json(json_file, data):
    with open(json_file, 'w') as file:
        file.write(json.dumps(data))


if __name__ == '__main__':
    write_to_json("dataset/origin", "dataset/")
    # for directory in os.listdir("dataset/origin"):
    #     print(directory, len(walk_files("dataset/origin/" + directory)))