#!/usr/bin/env python3

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# * (https://npcap.com) for packet capture and transmission. It is under
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# ***************************************************************************/

from os import access, R_OK, W_OK
from os.path import dirname
from zenmapCore.Paths import Path


class RecentScans(object):
    def __init__(self):
        self.temp_list = []

        try:
            self.recent_scans_file = Path.recent_scans
        except Exception:
            self.recent_scans_file = False

        if (self.recent_scans_file and
                (access(self.recent_scans_file, R_OK and W_OK) or
                    access(dirname(self.recent_scans_file), R_OK and W_OK))):
            self.using_file = True

            # Recovering saved targets
            for enc in ('utf-8', None):
                try:
                    with open(self.recent_scans_file, "r", encoding=enc) as recent_file:
                        self.temp_list = [
                                t for t in recent_file.read().split(";")
                                if t != "" and t != "\n"]
                except UnicodeDecodeError:
                    continue
                break
        else:
            self.using_file = False

    def save(self):
        if self.using_file:
            recent_file = open(self.recent_scans_file, "w", encoding="utf-8")
            recent_file.write(";".join(self.temp_list))
            recent_file.close()

    def add_recent_scan(self, recent_scan):
        if recent_scan in self.temp_list:
            return

        self.temp_list.append(recent_scan)
        self.save()

    def clean_list(self):
        del self.temp_list
        self.temp_list = []
        self.save()

    def get_recent_scans_list(self):
        t = self.temp_list[:]
        t.reverse()
        return t

recent_scans = RecentScans()

if __name__ == "__main__":
    r = RecentScans()
    print(">>> Getting empty list:", r.get_recent_scans_list())
    print(">>> Adding recent scan bla:", r.add_recent_scan("bla"))
    print(">>> Getting recent scan list:", r.get_recent_scans_list())
    del r
