import re
import datetime
import shutil
import os.path
import re


def file_backup_time():
    now = datetime.datetime.now()
    return now.strftime("%Y%m%d%H%M%S")


def get_directory(file_path):
    return os.path.dirname(file_path)


def get_file_name_with_extention(file_path):
    dir_part = get_directory(file_path)
    file_name = file_path.replace(dir_part, "").replace("\\", "").replace(r"/", "")
    (name, ext) = file_name.split(".")
    return (name, ext)


class SFileObject:
    def __init__(self, file_path):
        self._content = []
        self.file_path = file_path
        self._read(file_path)
        pass

    def _read(self, file_path):
        with open(file_path) as f:
            for line in f:
                trimeed_line = line.strip()
                if trimeed_line == "":
                    continue
                norm_trimed_line = re.sub(r"(\s+)", ",", trimeed_line)
                sep = norm_trimed_line.split(",")
                self._content.append(sep)

    def _save_backup(self, back_file_path):
        shutil.copy(self.file_path, back_file_path)

    def write(self, target_file_path):
        (file_name, ext) = get_file_name_with_extention(self.file_path)
        src_file_dir = get_directory(self.file_path)
        self._save_backup(
            "{dir}/{file_name}-{time}.{ext}".format(
                dir=src_file_dir, file_name=file_name, time=file_backup_time(), ext=ext
            )
        )
        with open(target_file_path, "wt") as file:
            for content in self._content:
                _content=[str(x) for x in content]
                file.write("{content}\n".format(content=" ".join(_content)))

    def has(self, tower_number):  # 塔位号是否存在S文件中。
        for index, content in enumerate(self._content):
            if content[0] == tower_number:
                return index
        return 0

    def content(self):
        return self._content

    def update_height(self, index, new_height):  # 更新内存中S文件中的塔高
        content = self._content
        content[index][7] = new_height


# 把所有S文件当做一个来操作
class SFileAsSingle:
    def __init__(self, s_files):
        self._s_files = s_files

    # 考虑不同位置处出现塔号的情况
    def has(self, tower_number) -> [(SFileObject, int)]:
        s_file = self._s_files
        ret = []
        for s in s_file:
            d_file_obj = SFileObject(s)
            index = d_file_obj.has(tower_number)
            if index > 0:
                ret.append((d_file_obj, index))
        return ret

    def update_height(self, result: [(SFileObject, int)], new_height):
        s_changed_record = {}
        for s_file_obj, index in result:
            s_file_obj.update_height(index, new_height)
            s_changed_record[s_file_obj] = 1
        for s_file_obj in s_changed_record:
            s_output_file_path = s_file_obj.file_path
            s_file_obj.write(s_output_file_path)
            print("update S file {Ss}".format(Ss=s_output_file_path))


class TaFileObject:
    def __init__(self, file_path, SFile):
        # self._content = []
        self._file_path = file_path
        self._read(file_path)
        self._old_tower_height_record = None
        self._SFile = SFile
        pass

    def _read(self, file_path):
        contents = []
        with open(file_path) as f:
            for line in f:
                trimeed_line = line.strip()
                if trimeed_line == "":
                    continue
                norm_trimed_line = re.sub(r"(\s+)", "", trimeed_line)
                sep = norm_trimed_line.split(",")
                contents.append(sep)
        return contents

    def _make_tower_height_record(self, contents):  # 将TA文件读入内存字典中
        tower_height_record = {}
        for content in contents:
            sep = content
            if len(sep) > 9:
                tower_number = sep[0]
                tower_height = sep[9]
                tower_height_record[tower_number] = tower_height
        return tower_height_record

    def sync_tower_height_to_S(self, new_contents, old_tower_height_record):
        updated = False
        for content in new_contents:
            sep = content
            if len(sep) > 9:
                tower_number = sep[0]
                old_tower_height = float(old_tower_height_record[tower_number])
                new_tower_height = float(sep[9])
                if abs(old_tower_height - new_tower_height) > 1e-5:
                    print(
                        "{tower_number} height changes to {new_tower_height}".format(
                            tower_number=tower_number, new_tower_height=new_tower_height
                        )
                    )
                    SFile = self._SFile
                    s_as_single = SFileAsSingle(SFile)
                    result = s_as_single.has(tower_number)
                    if len(result) > 0:
                        s_as_single.update_height(result, new_tower_height)
                    updated = True
        return updated

    # 将S文件中的塔高同步到TA文件中。
    def sync_tower_height_from_S(self):
        pass

    def start(self):
        file_path = self._file_path
        while True:  # 检测文件是否有变化的循环
            new_contents = self._read(file_path)  # 每一次循环都会重新读一遍TA文件
            if self._old_tower_height_record is None:
                self._old_tower_height_record = self._make_tower_height_record(
                    new_contents
                )
            if self.sync_tower_height_to_S(new_contents, self._old_tower_height_record):
                self._old_tower_height_record = self._make_tower_height_record(
                    new_contents
                )
            while True:  # 接受输入的循环
                key = input("press Y to synchronize TA to S\n")
                if key == "y" or key == "Y":
                    break
                print("key invalid.")


class CordinationObject:
    def __init__(self, cord_file_path):
        content = []
        cord_dic = {}
        with open(cord_file_path) as cord_file:
            for line in cord_file:
                if line.strip() == "":
                    continue
                sep = line.split(",")
                J_or_Z = sep[0][0]
                pile = re.findall(r"[JZ]0*([0-9]+)", sep[0])[0]
                JZ_pile = J_or_Z + pile
                # pile = sep[0][1:len(sep[0])]
                altitude = sep[1]
                mileage = sep[2]
                content.append((JZ_pile, altitude, mileage))
                index = len(content) - 1
                cord_dic[pile] = index  # 字典是不带J或者Z的
        self._content = content
        self._cord_dic = cord_dic

    def get_altitude(self, pile):
        cord_dic = self._cord_dic
        if pile in cord_dic:
            index = cord_dic[pile]
            return self._content[index][1]
        return None

    def content(self):
        return self._content