import csv
import re
import datetime
import os

# read_dddd_data:读取弹道导弹轨迹
def read_dddd_data(filedir=".", filename="./dddd1.csv"):
    filepath = os.path.join(filedir, filename)
    data = []
    pattern = r"(\d+\s\w+\s\d+\s\d{2}:\d{2}:\d{2}.\d{3})\s+(-?\d+\.\d+)\s+(-?\d+\.\d+)\s+(-?\d+\.\d+)"
    # pattern = r'\s+(\d+\s\w+\s\d+\s\d{2}:\d{2}:\d{2}\.\d{3})\s+(-?\d+\.\d+)\s+(-?\d+\.\d+)\s+(-?\d+\.\d+)\s+(-?\d+\.\d+)\s+(-?\d+\.\d+)\s+(-?\d+\.\d+)'

    # 打开CSV文件并读取内容
    with open(filepath, newline="") as csvfile:
        reader = csv.reader(csvfile)
        # 跳过CSV文件的第一行，即标题行
        next(reader)
        next(reader)
        next(reader)
        next(reader)
        next(reader)
        next(reader)
        next(reader)
        # 逐行读取CSV文件内容并添加到data列表中
        for row in reader:
            match = re.match(pattern, row[0])
            split_data = row[0].split("   ")
            if match:
                # 将匹配的内容存储到result_array中
                data.append(
                    [match.group(1), match.group(2), match.group(3), match.group(4)]
                )
    return data

# read_satellite_data:读取卫星轨迹
def read_satellite_data(filedir="", filename="./dddd1.csv"):
    filepath = os.path.join(filedir, filename)
    data = []
    # pattern = r'(\d+\s\w+\s\d+\s\d{2}:\d{2}:\d{2}.\d{3})\s+(-?\d+\.\d+)\s+(-?\d+\.\d+)\s+(-?\d+\.\d+)'
    pattern = r"\s+(\d+\s\w+\s\d+\s\d{2}:\d{2}:\d{2}\.\d{3})\s+(-?\d+\.\d+)\s+(-?\d+\.\d+)\s+(-?\d+\.\d+)\s+(-?\d+\.\d+)\s+(-?\d+\.\d+)\s+(-?\d+\.\d+)"

    # 打开CSV文件并读取内容
    with open(filepath, newline="") as csvfile:
        reader = csv.reader(csvfile)
        # 跳过CSV文件的第一行，即标题行
        next(reader)
        next(reader)
        next(reader)
        next(reader)
        next(reader)
        next(reader)
        next(reader)
        # 逐行读取CSV文件内容并添加到data列表中
        for row in reader:
            match = re.match(pattern, row[0])
            split_data = row[0].split("   ")
            if match:
                # 将匹配的内容存储到result_array中
                data.append(
                    [match.group(1), match.group(2), match.group(3), match.group(4)]
                )
    return data

# read_satellite_data:返回全部轨迹
def get_position_by_time(
    starttime, stoptime, dddd_array, satellite_array, timestep, redunit, satellite
):
    
    # microseconds = ".000"
    # starttime = starttime + microseconds
    # stoptime = stoptime + microseconds
    start_time_obj = datetime.datetime.strptime(starttime, "%d %B %Y %H:%M:%S.%f")
    stop_time_obj = datetime.datetime.strptime(stoptime, "%d %B %Y %H:%M:%S.%f")
    
    # 使用timedelta增加时间
    current_time = start_time_obj
    index = 0
    final_data = []
    # while current_time + microseconds != stoptime:
    while current_time <= stop_time_obj:
        obj = {}
        for i in range(len(dddd_array)):
            if index < len(dddd_array[i]):
                item = dddd_array[i][index]
                obj["dateTime"] = item[0]
                obj[redunit[i].get("name")] = {
                    "time": item[0],
                    "x": item[1],
                    "y": item[2],
                    "z": item[3],
                }
        for j in range(len(satellite_array)):
            if index < len(satellite_array[j]):
                obj["dateTime"] = item[0]
                item = satellite_array[j][index]
                obj[satellite[j].get("name")] = {
                    "time": item[0],
                    "x": item[1],
                    "y": item[2],
                    "z": item[3],
                }
        final_data.append(obj)

        current_time  = current_time + datetime.timedelta(seconds=int(timestep))
        index = index + 1

    return final_data