#!/usr/bin/env python3

import argparse
import logging
import os
import os.path
import sys
import traceback

from decimal import Decimal
from solana.publickey import PublicKey
from solana.system_program import TransferParams, transfer
from solana.transaction import Transaction

sys.path.insert(0, os.path.abspath(
    os.path.join(os.path.dirname(__file__), "..")))
import mango  # nopep8

# We explicitly want argument parsing to be outside the main try-except block because some arguments
# (like --help) will cause an exit, which our except: block traps.
parser = argparse.ArgumentParser(description="Sends SOL to a different address.")
mango.ContextBuilder.add_command_line_parameters(parser)
mango.Wallet.add_command_line_parameters(parser)
parser.add_argument("--address", type=PublicKey,
                    help="Destination address for the SPL token - can be either the actual token address or the address of the owner of the token address")
parser.add_argument("--quantity", type=Decimal, required=True, help="quantity of token to send")
parser.add_argument("--dry-run", action="store_true", default=False,
                    help="runs as read-only and does not perform any transactions")
args: argparse.Namespace = mango.parse_args(parser)

try:
    context = mango.ContextBuilder.from_command_line_parameters(args)
    wallet = mango.Wallet.from_command_line_parameters_or_raise(args)

    logging.info(f"Wallet address: {wallet.address}")

    sol_balance = context.client.get_balance(wallet.address)
    print(f"Balance: {sol_balance} SOL")

    # "A lamport has a value of 0.000000001 SOL." from https://docs.solana.com/introduction
    lamports = int(args.quantity * mango.SOL_DECIMAL_DIVISOR)
    source = wallet.address
    destination = args.address

    text_amount = f"{lamports} lamports (SOL @ 9 decimal places)"
    print(f"Sending {text_amount}")
    print(f"    From: {source}")
    print(f"      To: {destination}")

    if args.dry_run:
        print("Skipping actual transfer - dry run.")
    else:
        transaction = Transaction()
        params = TransferParams(from_pubkey=source, to_pubkey=destination, lamports=lamports)
        transaction.add(transfer(params))

        transaction_id = context.client.send_transaction(transaction, wallet.keypair)
        print(f"Waiting on transaction ID: {transaction_id}")
        context.client.wait_for_confirmation([transaction_id])

    updated_balance = context.client.get_balance(wallet.address)
    print(f"{text_amount} sent. Balance now: {updated_balance} SOL")
except Exception as exception:
    logging.critical(f"send-sols stopped because of exception: {exception} - {traceback.format_exc()}")
except:
    logging.critical(f"send-sols stopped because of uncatchable error: {traceback.format_exc()}")