# -*- coding: utf-8 -*-

# Copyright (c) 2019-2020 tecnovert
# Distributed under the MIT software license, see the accompanying
# file LICENSE or http://www.opensource.org/licenses/mit-license.php.

import struct
import time
import sqlalchemy as sa

from sqlalchemy.ext.declarative import declarative_base
from enum import IntEnum, auto


CURRENT_DB_VERSION = 5
Base = declarative_base()


class DBKVInt(Base):
    __tablename__ = 'kv_int'

    key = sa.Column(sa.String, primary_key=True)
    value = sa.Column(sa.Integer)


class DBKVString(Base):
    __tablename__ = 'kv_string'

    key = sa.Column(sa.String, primary_key=True)
    value = sa.Column(sa.String)


class Offer(Base):
    __tablename__ = 'offers'

    offer_id = sa.Column(sa.LargeBinary, primary_key=True)
    active_ind = sa.Column(sa.Integer)

    coin_from = sa.Column(sa.Integer)
    coin_to = sa.Column(sa.Integer)
    amount_from = sa.Column(sa.BigInteger)
    rate = sa.Column(sa.BigInteger)
    min_bid_amount = sa.Column(sa.BigInteger)
    time_valid = sa.Column(sa.BigInteger)
    lock_type = sa.Column(sa.Integer)
    lock_value = sa.Column(sa.Integer)
    swap_type = sa.Column(sa.Integer)

    proof_address = sa.Column(sa.String)
    proof_signature = sa.Column(sa.LargeBinary)
    pkhash_seller = sa.Column(sa.LargeBinary)
    secret_hash = sa.Column(sa.LargeBinary)

    addr_from = sa.Column(sa.String)
    created_at = sa.Column(sa.BigInteger)
    expire_at = sa.Column(sa.BigInteger)
    was_sent = sa.Column(sa.Boolean)

    from_feerate = sa.Column(sa.BigInteger)
    to_feerate = sa.Column(sa.BigInteger)

    # Local fields
    auto_accept_bids = sa.Column(sa.Boolean)
    withdraw_to_addr = sa.Column(sa.String)  # Address to spend lock tx to - address from wallet if empty TODO

    state = sa.Column(sa.Integer)
    states = sa.Column(sa.LargeBinary)  # Packed states and times

    def setState(self, new_state):
        now = int(time.time())
        self.state = new_state
        if self.states is None:
            self.states = struct.pack('<iq', new_state, now)
        else:
            self.states += struct.pack('<iq', new_state, now)


class Bid(Base):
    __tablename__ = 'bids'

    bid_id = sa.Column(sa.LargeBinary, primary_key=True)
    offer_id = sa.Column(sa.LargeBinary, sa.ForeignKey('offers.offer_id'))
    active_ind = sa.Column(sa.Integer)

    was_sent = sa.Column(sa.Boolean)
    was_received = sa.Column(sa.Boolean)
    contract_count = sa.Column(sa.Integer)
    created_at = sa.Column(sa.BigInteger)
    expire_at = sa.Column(sa.BigInteger)
    bid_addr = sa.Column(sa.String)
    proof_address = sa.Column(sa.String)
    withdraw_to_addr = sa.Column(sa.String)  # Address to spend lock tx to - address from wallet if empty TODO

    recovered_secret = sa.Column(sa.LargeBinary)
    amount_to = sa.Column(sa.BigInteger)  # amount * offer.rate

    pkhash_buyer = sa.Column(sa.LargeBinary)
    amount = sa.Column(sa.BigInteger)

    accept_msg_id = sa.Column(sa.LargeBinary)
    pkhash_seller = sa.Column(sa.LargeBinary)

    initiate_txn_redeem = sa.Column(sa.LargeBinary)
    initiate_txn_refund = sa.Column(sa.LargeBinary)

    participate_txn_redeem = sa.Column(sa.LargeBinary)
    participate_txn_refund = sa.Column(sa.LargeBinary)

    in_progress = sa.Column(sa.Integer)
    state = sa.Column(sa.Integer)
    state_time = sa.Column(sa.BigInteger)  # Timestamp of last state change
    states = sa.Column(sa.LargeBinary)  # Packed states and times

    state_note = sa.Column(sa.String)

    debug_ind = sa.Column(sa.Integer)

    initiate_tx = None
    participate_tx = None
    xmr_a_lock_tx = None
    xmr_a_lock_spend_tx = None
    xmr_b_lock_tx = None  # TODO: Can't move to txns due to error: Exception UPDATE statement on table expected to update 1 row(s); 0 were matched

    txns = {}

    def getITxState(self):
        if self.initiate_tx is None:
            return None
        return self.initiate_tx.state

    def setITxState(self, new_state):
        if self.initiate_tx is not None:
            self.initiate_tx.setState(new_state)

    def getPTxState(self):
        if self.participate_tx is None:
            return None
        return self.participate_tx.state

    def setPTxState(self, new_state):
        if self.participate_tx is not None:
            self.participate_tx.setState(new_state)

    def setState(self, new_state, state_note=None):
        now = int(time.time())
        self.state = new_state
        self.state_time = now

        if state_note is not None:
            self.state_note = state_note
        if self.states is None:
            self.states = struct.pack('<iq', new_state, now)
        else:
            self.states += struct.pack('<iq', new_state, now)


class SwapTx(Base):
    __tablename__ = 'transactions'

    bid_id = sa.Column(sa.LargeBinary, sa.ForeignKey('bids.bid_id'))
    tx_type = sa.Column(sa.Integer)  # TxTypes
    __table_args__ = (
        sa.PrimaryKeyConstraint('bid_id', 'tx_type'),
        {},
    )

    txid = sa.Column(sa.LargeBinary)
    vout = sa.Column(sa.Integer)

    script = sa.Column(sa.LargeBinary)

    tx_fee = sa.Column(sa.BigInteger)
    chain_height = sa.Column(sa.Integer)
    conf = sa.Column(sa.Integer)

    spend_txid = sa.Column(sa.LargeBinary)
    spend_n = sa.Column(sa.Integer)

    state = sa.Column(sa.Integer)
    states = sa.Column(sa.LargeBinary)  # Packed states and times

    def setState(self, new_state):
        self.state = new_state
        self.states = (self.states if self.states is not None else bytes()) + struct.pack('<iq', new_state, int(time.time()))


class PooledAddress(Base):
    __tablename__ = 'addresspool'

    addr_id = sa.Column(sa.Integer, primary_key=True, autoincrement=True)
    coin_type = sa.Column(sa.Integer)
    addr = sa.Column(sa.String)
    bid_id = sa.Column(sa.LargeBinary)
    tx_type = sa.Column(sa.Integer)


class SentOffer(Base):
    __tablename__ = 'sentoffers'

    offer_id = sa.Column(sa.LargeBinary, primary_key=True)


class SmsgAddress(Base):
    __tablename__ = 'smsgaddresses'

    addr_id = sa.Column(sa.Integer, primary_key=True, autoincrement=True)
    addr = sa.Column(sa.String)
    use_type = sa.Column(sa.Integer)


class EventQueue(Base):
    __tablename__ = 'eventqueue'

    event_id = sa.Column(sa.Integer, primary_key=True, autoincrement=True)
    active_ind = sa.Column(sa.Integer)
    created_at = sa.Column(sa.BigInteger)
    trigger_at = sa.Column(sa.BigInteger)
    linked_id = sa.Column(sa.LargeBinary)
    event_type = sa.Column(sa.Integer)
    event_data = sa.Column(sa.LargeBinary)


class EventLog(Base):
    __tablename__ = 'eventlog'

    event_id = sa.Column(sa.Integer, primary_key=True, autoincrement=True)
    active_ind = sa.Column(sa.Integer)
    created_at = sa.Column(sa.BigInteger)
    linked_type = sa.Column(sa.Integer)
    linked_id = sa.Column(sa.LargeBinary)
    event_type = sa.Column(sa.Integer)
    event_msg = sa.Column(sa.String)

    __table_args__ = (sa.Index('main_index', 'linked_type', 'linked_id'), )


class XmrOffer(Base):
    __tablename__ = 'xmr_offers'

    swap_id = sa.Column(sa.Integer, primary_key=True, autoincrement=True)
    offer_id = sa.Column(sa.LargeBinary, sa.ForeignKey('offers.offer_id'))

    a_fee_rate = sa.Column(sa.BigInteger)
    b_fee_rate = sa.Column(sa.BigInteger)

    lock_time_1 = sa.Column(sa.Integer)  # Delay before the chain a lock refund tx can be mined
    lock_time_2 = sa.Column(sa.Integer)  # Delay before the follower can spend from the chain a lock refund tx


class XmrSwap(Base):
    __tablename__ = 'xmr_swaps'

    swap_id = sa.Column(sa.Integer, primary_key=True, autoincrement=True)
    bid_id = sa.Column(sa.LargeBinary, sa.ForeignKey('bids.bid_id'))
    bid_msg_id2 = sa.Column(sa.LargeBinary)
    bid_msg_id3 = sa.Column(sa.LargeBinary)

    bid_accept_msg_id = sa.Column(sa.LargeBinary)
    bid_accept_msg_id2 = sa.Column(sa.LargeBinary)
    bid_accept_msg_id3 = sa.Column(sa.LargeBinary)

    coin_a_lock_tx_sigs_l_msg_id = sa.Column(sa.LargeBinary)  # MSG3L F -> L
    coin_a_lock_refund_spend_tx_msg_id = sa.Column(sa.LargeBinary)  # MSG4F L -> F

    contract_count = sa.Column(sa.Integer)

    sv = sa.Column(sa.LargeBinary)  # Secret value
    sh = sa.Column(sa.LargeBinary)  # Secret hash

    dest_af = sa.Column(sa.LargeBinary)  # Destination for coin A amount to follower when swap completes successfully

    pkal = sa.Column(sa.LargeBinary)
    pkarl = sa.Column(sa.LargeBinary)
    pkasl = sa.Column(sa.LargeBinary)

    pkaf = sa.Column(sa.LargeBinary)
    pkarf = sa.Column(sa.LargeBinary)
    pkasf = sa.Column(sa.LargeBinary)

    vkbvl = sa.Column(sa.LargeBinary)
    vkbsl = sa.Column(sa.LargeBinary)
    pkbvl = sa.Column(sa.LargeBinary)
    pkbsl = sa.Column(sa.LargeBinary)

    vkbvf = sa.Column(sa.LargeBinary)
    vkbsf = sa.Column(sa.LargeBinary)
    pkbvf = sa.Column(sa.LargeBinary)
    pkbsf = sa.Column(sa.LargeBinary)

    kbsl_dleag = sa.Column(sa.LargeBinary)
    kbsf_dleag = sa.Column(sa.LargeBinary)

    vkbv = sa.Column(sa.LargeBinary)
    pkbv = sa.Column(sa.LargeBinary)
    pkbs = sa.Column(sa.LargeBinary)

    a_lock_tx = sa.Column(sa.LargeBinary)
    a_lock_tx_script = sa.Column(sa.LargeBinary)
    a_lock_tx_id = sa.Column(sa.LargeBinary)
    a_lock_tx_vout = sa.Column(sa.Integer)

    a_lock_refund_tx = sa.Column(sa.LargeBinary)
    a_lock_refund_tx_script = sa.Column(sa.LargeBinary)
    a_lock_refund_tx_id = sa.Column(sa.LargeBinary)
    a_swap_refund_value = sa.Column(sa.BigInteger)
    al_lock_refund_tx_sig = sa.Column(sa.LargeBinary)
    af_lock_refund_tx_sig = sa.Column(sa.LargeBinary)

    a_lock_refund_spend_tx = sa.Column(sa.LargeBinary)
    a_lock_refund_spend_tx_id = sa.Column(sa.LargeBinary)

    af_lock_refund_spend_tx_esig = sa.Column(sa.LargeBinary)
    af_lock_refund_spend_tx_sig = sa.Column(sa.LargeBinary)

    a_lock_spend_tx = sa.Column(sa.LargeBinary)
    a_lock_spend_tx_id = sa.Column(sa.LargeBinary)
    al_lock_spend_tx_esig = sa.Column(sa.LargeBinary)

    a_lock_refund_swipe_tx = sa.Column(sa.LargeBinary)  # Follower spends script coin lock refund tx

    b_lock_tx_id = sa.Column(sa.LargeBinary)

    start_chain_a_height = sa.Column(sa.Integer)  # Height of script chain before the swap
    b_restore_height = sa.Column(sa.Integer)  # Height of scriptless chain before the swap


class XmrSplitData(Base):
    __tablename__ = 'xmr_split_data'

    record_id = sa.Column(sa.Integer, primary_key=True, autoincrement=True)
    bid_id = sa.Column(sa.LargeBinary)
    msg_type = sa.Column(sa.Integer)
    msg_sequence = sa.Column(sa.Integer)
    dleag = sa.Column(sa.LargeBinary)
    created_at = sa.Column(sa.BigInteger)


class RevokedMessage(Base):
    __tablename__ = 'revoked_messages'

    record_id = sa.Column(sa.Integer, primary_key=True, autoincrement=True)
    active_ind = sa.Column(sa.Integer)
    msg_id = sa.Column(sa.LargeBinary)
    created_at = sa.Column(sa.BigInteger)
    expires_at = sa.Column(sa.BigInteger)


class TableTypes(IntEnum):
    OFFER = auto()
    BID = auto()