import json
import uuid
import hashlib

from datetime import datetime

from .db import Database


def parse_traceroute_output(data: str, origin: str):
    lines = data.strip().split("\n")
    target = lines[0].split()[2]

    created = datetime.now().isoformat()

    trace = {"target": target, "created": created, "origin": origin, "hops": []}

    prev_latency = 0

    for line in lines[1:]:
        hop_info = line.split()
        print("LINE:", hop_info)
        try:
            number, name, ip, latency, _ = hop_info
            hop = {
                "created": created,
                "number": number,
                "name": name,
                "ip": ip.strip("()"),
                "latency": float(latency),
            }
        except ValueError:
            number, name = hop_info
            hop = {
                "created": created,
                "number": number,
                "name": name,
                "ip": None,
                "latency": None,
            }

        trace["hops"].append(hop)

    return trace


def store_traceroute(trace):
    db = Database()

    # hops_json = json.dumps(trace['hops'])

    path_ids = {}

    previous_hop_ip = None
    previous_hop_latency = None
    for hop in trace["hops"]:
        hop_number = hop["number"]
        hop_name = hop.get("name")
        hop_ip = hop.get("ip")
        hop_latency = hop.get("latency")
        link_id = None

        # insert links and get their id's
        if previous_hop_ip:
            link_id = db.create_link(previous_hop_ip, hop_ip)
            path_ids[hop_number] = link_id

        previous_hop_ip = hop_ip

        # Save hop details
        db.create_hop(hop_name, hop_ip, hop_latency)

        # calculate link latency if possible and store it
        if link_id and previous_hop_latency:
            link_latency = hop_latency - previous_hop_latency
            db.create_latency(link_id, trace["created"], link_latency)

    # make entry to "Paths" table
    if path_ids:
        json_path_ids = json.dumps(path_ids)
        db.create_path(node, trace["target"], json_path_ids)

    db.end()


def generate_node_id():
    mac = uuid.getnode()
    mac_str = ":".join(
        ["{:02x}".format((mac >> ele) & 0xFF) for ele in range(0, 8 * 6, 8)][::-1]
    )

    # Hash the MAC address using SHA-256 to generate a unique ID
    unique_id = hashlib.sha256(mac_str.encode()).hexdigest()

    return unique_id