#!/usr/bin/env python

'''
Copyright (c) 2014-2020, The Monero Project

All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.

3. Neither the name of the copyright holder nor the names of its contributors
may be used to endorse or promote products derived from this software without
specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Parts of the project are originally copyright (c) 2012-2013 The Cryptonote
developers.
'''

import argparse
import lmdb
from ctypes import *
from datetime import datetime

class share_t(Structure):
    _fields_ = [('height', c_longlong),
                ('difficulty', c_longlong),
                ('address', c_char*128),
                ('timestamp', c_longlong)]

class payment_t(Structure):
    _fields_ = [('amount', c_longlong),
                ('timestamp', c_longlong),
                ('address', c_char*128)]

class block_t(Structure):
    _fields_ = [('height', c_longlong),
                ('hash', c_char*64),
                ('prev_hash', c_char*64),
                ('difficulty', c_longlong),
                ('status', c_long),
                ('reward', c_longlong),
                ('timestamp', c_longlong)]

def format_block_hash(block_hash):
    return '{}...{}'.format(block_hash[:4], block_hash[-4:])

def format_block_status(status):
    s = ["LOCKED", "UNLOCKED", "ORPHANED"]
    return s[status]

def format_timestamp(timestamp):
    dt = datetime.fromtimestamp(timestamp)
    return dt.strftime('%Y-%m-%d %H:%M:%S')

def format_amount(amount):
    return '{0:.6f}'.format(amount/1e12)

def format_address(address):
    return '{}...{}'.format(address[:8], address[-8:])

def address_from_key(key):
    return key.decode('utf-8').rstrip('\0')

def print_balance(path):
    env = lmdb.open(path, readonly=True, max_dbs=1, create=False)
    balance = env.open_db('balance'.encode())
    with env.begin(db=balance) as txn:
        with txn.cursor() as curs:
            for key, value in curs:
                address = format_address(address_from_key(key))
                amount = c_longlong.from_buffer_copy(value).value
                amount = format_amount(amount)
                print('{}\t{}'.format(address, amount))
    env.close()

def print_payements(path):
    env = lmdb.open(path, readonly=True, max_dbs=1, create=False)
    payments = env.open_db('payments'.encode())
    with env.begin(db=payments) as txn:
        with txn.cursor() as curs:
            for key, value in curs:
                address = format_address(address_from_key(key))
                p = payment_t.from_buffer_copy(value)
                amount = format_amount(p.amount)
                dt = format_timestamp(p.timestamp)
                print('{}\t{}\t{}'.format(address, amount, dt))
    env.close()

def print_mined(path):
    env = lmdb.open(path, readonly=True, max_dbs=1, create=False)
    blocks = env.open_db('blocks'.encode())
    with env.begin(db=blocks) as txn:
        with txn.cursor() as curs:
            for key, value in curs:
                height = c_longlong.from_buffer_copy(key).value
                b = block_t.from_buffer_copy(value)
                bh = format_block_hash(b.hash.decode('utf-8'))
                dt = format_timestamp(b.timestamp)
                reward = format_amount(b.reward)
                status  = format_block_status(b.status)
                print('{}\t{}\t{}\t{}\t{}'.format(height, bh, status,
                    reward, dt))
    env.close()

def print_shares(path):
    env = lmdb.open(path, readonly=True, max_dbs=1, create=False)
    shares = env.open_db('shares'.encode(), dupsort=True)
    with env.begin(db=shares) as txn:
        with txn.cursor() as curs:
            curs.last()
            for i in range(25):
                key, value = curs.item()
                height = c_longlong.from_buffer_copy(key).value
                share = share_t.from_buffer_copy(value)
                address = format_address(address_from_key(share.address))
                dt = format_timestamp(share.timestamp)
                print('{}\t{}\t{}'.format(height, address, dt))
                if not curs.prev():
                    break
    env.close()

def main():
    parser = argparse.ArgumentParser()
    group = parser.add_mutually_exclusive_group(required=True)
    group.add_argument('-b', '--balances', action='store_true',
            help='list miner balances')
    group.add_argument('-p', '--payments', action='store_true',
            help='list payments made')
    group.add_argument('-m', '--mined', action='store_true',
            help='list mined blocks')
    group.add_argument('-s', '--shares', action='store_true',
            help='list recent shares')
    parser.add_argument('database', help='path to database')
    args = parser.parse_args()
    if args.balances:
        print_balance(args.database)
    elif args.payments:
        print_payements(args.database)
    elif args.mined:
        print_mined(args.database)
    elif args.shares:
        print_shares(args.database)

if __name__ == '__main__':
    main()