#!/usr/bin/env python3
#
# mmgen = Multi-Mode GENerator, command-line Bitcoin cold storage solution
# Copyright (C)2013-2023 The MMGen Project <mmgen@tuta.io>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

"""
test.cmdtest_py_d.ct_shared: Shared methods for the cmdtest.py test suite
"""

from mmgen.util import get_extension
from mmgen.wallet import get_wallet_cls

from ..include.common import cfg,cmp_or_die,strip_ansi_escapes,joinpath
from .common import ref_bw_file,ref_bw_hash_preset,ref_dir

class CmdTestShared:
	'shared methods for the cmdtest.py test suite'

	@property
	def segwit_mmtype(self):
		return ('segwit','bech32')[bool(cfg.bech32)] if self.segwit else None

	@property
	def segwit_arg(self):
		return ['--type=' + self.segwit_mmtype] if self.segwit_mmtype else []

	def txcreate_ui_common(
			self,
			t,
			caller             = None,
			menu               = [],
			inputs             = '1',
			file_desc          = 'Unsigned transaction',
			input_sels_prompt  = 'to spend',
			bad_input_sels     = False,
			interactive_fee    = '',
			fee_desc           = 'transaction fee',
			fee_info_pat       = None,
			add_comment        = '',
			view               = 't',
			save               = True,
			tweaks             = [],
			used_chg_addr_resp = None,
			auto_chg_addr      = None):

		txdo = (caller or self.test_name)[:4] == 'txdo'

		expect_pat = r'\[q\]uit menu, .*?:.'
		delete_pat = r'Enter account number .*:.'
		confirm_pat = r'Is this what you want.*:.'

		if used_chg_addr_resp is not None:
			t.expect('reuse harms your privacy.*:.*',used_chg_addr_resp,regex=True)

		if auto_chg_addr is not None:
			e1 = 'Choose a change address:.*Enter a number> '
			e2 = fr'Using .*{auto_chg_addr}.* as.*address'
			res = t.expect([e1,e2],regex=True)
			if res == 0:
				choice = [s.split(')')[0].lstrip() for s in t.p.match[0].split('\n') if auto_chg_addr in s][0]
				t.send(f'{choice}\n')
				t.expect(e2,regex=True)
			t.send('y')

		pat = expect_pat
		for choice in menu + ['q']:
			t.expect(pat,choice,regex=True)
			if self.proto.base_proto == 'Ethereum':
				pat = confirm_pat if pat == delete_pat else delete_pat if choice == 'D' else expect_pat

		if bad_input_sels:
			for r in ('x','3-1','9999'):
				t.expect(input_sels_prompt+': ',r+'\n')

		t.expect(input_sels_prompt+': ',inputs+'\n')

		have_est_fee = t.expect([f'{fee_desc}: ','OK? (Y/n): ']) == 1

		if have_est_fee and not interactive_fee:
			t.send('y')
		else:
			if have_est_fee:
				t.send('n')
				t.expect(f'{fee_desc}: ',interactive_fee+'\n')
			else:
				t.send(interactive_fee+'\n')
			if fee_info_pat:
				t.expect(fee_info_pat,regex=True)
			t.expect('OK? (Y/n): ','y')

		t.expect('(Y/n): ','\n') # chg amt OK prompt

		if 'confirm_non_mmgen' in tweaks:
			t.expect('Continue? (Y/n)','\n')

		t.do_comment(add_comment)
		t.view_tx(view)
		if not txdo:
			t.expect('(y/N): ',('n','y')[save])
			t.written_to_file(file_desc)

		return t

	def txsign_ui_common(
			self,
			t,
			caller      = None,
			view        = 't',
			add_comment = '',
			file_desc   = 'Signed transaction',
			ni          = False,
			save        = True,
			do_passwd   = False,
			has_label   = False):

		txdo = (caller or self.test_name)[:4] == 'txdo'

		if do_passwd:
			t.passphrase('MMGen wallet',self.wpasswd)

		if not ni and not txdo:
			t.view_tx(view)
			t.do_comment(add_comment,has_label=has_label)
			t.expect('(Y/n): ',('n','y')[save])

		t.written_to_file(file_desc)

		return t

	def txsend_ui_common(
			self,
			t,
			caller       = None,
			view         = 'n',
			add_comment  = '',
			file_desc    = 'Sent transaction',
			confirm_send = True,
			bogus_send   = True,
			quiet        = False,
			has_label    = False):

		txdo = (caller or self.test_name)[:4] == 'txdo'

		if not txdo:
			t.license() # MMGEN_NO_LICENSE is set, so does nothing
			t.view_tx(view)
			t.do_comment(add_comment,has_label=has_label)

		self._do_confirm_send(t,quiet=quiet,confirm_send=confirm_send)

		if bogus_send:
			txid = ''
			t.expect('BOGUS transaction NOT sent')
		else:
			txid = strip_ansi_escapes(t.expect_getend('Transaction sent: '))
			assert len(txid) == 64, f'{txid!r}: Incorrect txid length!'

		t.written_to_file(file_desc)

		return txid

	def txsign_end(self,t,tnum=None,has_label=False):
		t.expect('Signing transaction')
		t.do_comment(False,has_label=has_label)
		t.expect(r'Save signed transaction.*?\? \(Y/n\): ','y',regex=True)
		t.written_to_file('Signed transaction' + (' #' + tnum if tnum else ''))
		return t

	def txsign(
			self,
			wf,
			txfile,
			save       = True,
			has_label  = False,
			extra_opts = [],
			extra_desc = '',
			view       = 'n',
			dfl_wallet = False):
		opts = extra_opts + ['-d',self.tmpdir,txfile] + ([wf] if wf else [])
		t = self.spawn('mmgen-txsign', opts, extra_desc)
		t.license()
		t.view_tx(view)
		wcls = get_wallet_cls( ext = 'mmdat' if dfl_wallet else get_extension(wf) )
		if wcls.enc and wcls.type != 'brain':
			t.passphrase(wcls.desc,self.wpasswd)
		if save:
			self.txsign_end(t,has_label=has_label)
		else:
			t.do_comment(False,has_label=has_label)
			t.expect('Save signed transaction? (Y/n): ','n')
			t.expect('not saved')
			t.req_exit_val = 1
		return t

	def ref_brain_chk(self,bw_file=ref_bw_file):
		wf = joinpath(ref_dir,bw_file)
		add_args = [f'-l{self.seed_len}', f'-p{ref_bw_hash_preset}']
		return self.walletchk(wf,add_args=add_args,sid=self.ref_bw_seed_id)

	def walletchk(
			self,
			wf,
			wcls       = None,
			add_args   = [],
			sid        = None,
			extra_desc = '',
			dfl_wallet = False):
		hp = self.hash_preset if hasattr(self,'hash_preset') else '1'
		wcls = wcls or get_wallet_cls(ext=get_extension(wf))
		t = self.spawn('mmgen-walletchk',
				([] if dfl_wallet else ['-i',wcls.fmt_codes[0]])
				+ add_args + ['-p',hp]
				+ ([wf] if wf else []),
				extra_desc=extra_desc)
		if wcls.type != 'incog_hidden':
			t.expect(f"Getting {wcls.desc} from file '")
		if wcls.enc and wcls.type != 'brain':
			t.passphrase(wcls.desc,self.wpasswd)
			t.expect(['Passphrase is OK', 'Passphrase.* are correct'],regex=True)
		chk = t.expect_getend(f'Valid {wcls.desc} for Seed ID ')[:8]
		if sid:
			cmp_or_die(chk,sid)
		return t

	def addrgen(
			self,
			wf,
			check_ref  = False,
			ftype      = 'addr',
			id_str     = None,
			extra_args = [],
			mmtype     = None,
			stdout     = False,
			dfl_wallet = False):
		passgen = ftype[:4] == 'pass'
		if not mmtype and not passgen:
			mmtype = self.segwit_mmtype
		cmd_pfx = (ftype,'pass')[passgen]
		t = self.spawn(
				f'mmgen-{cmd_pfx}gen',
				['-d',self.tmpdir] + extra_args +
				([],['--type='+str(mmtype)])[bool(mmtype)] +
				([],['--stdout'])[stdout] +
				([],[wf])[bool(wf)] +
				([],[id_str])[bool(id_str)] +
				[getattr(self,f'{cmd_pfx}_idx_list')],
				extra_desc=f'({mmtype})' if mmtype in ('segwit','bech32') else '')
		t.license()
		wcls = get_wallet_cls( ext = 'mmdat' if dfl_wallet else get_extension(wf) )
		t.passphrase(wcls.desc,self.wpasswd)
		t.expect('Passphrase is OK')
		desc = ('address','password')[passgen]
		chk = t.expect_getend(rf'Checksum for {desc} data .*?: ',regex=True)
		if passgen:
			t.expect('Encrypt password list? (y/N): ','N')
		t.read() if stdout else t.written_to_file(('Addresses','Password list')[passgen])
		if check_ref:
			chk_ref = (
				self.chk_data[self.test_name] if passgen else
				self.chk_data[self.test_name][self.fork][self.proto.testnet])
			cmp_or_die(chk,chk_ref,desc=f'{ftype}list data checksum')
		return t

	def keyaddrgen(self,wf,check_ref=False,mmtype=None):
		if not mmtype:
			mmtype = self.segwit_mmtype
		args = ['-d',self.tmpdir,self.usr_rand_arg,wf,self.addr_idx_list]
		t = self.spawn('mmgen-keygen',
				([],['--type='+str(mmtype)])[bool(mmtype)] + args,
				extra_desc=f'({mmtype})' if mmtype in ('segwit','bech32') else '')
		t.license()
		wcls = get_wallet_cls(ext=get_extension(wf))
		t.passphrase(wcls.desc,self.wpasswd)
		chk = t.expect_getend(r'Checksum for key-address data .*?: ',regex=True)
		if check_ref:
			chk_ref = self.chk_data[self.test_name][self.fork][self.proto.testnet]
			cmp_or_die(chk,chk_ref,desc='key-address list data checksum')
		t.expect('Encrypt key list? (y/N): ','y')
		t.usr_rand(self.usr_rand_chars)
		t.hash_preset('new key-address list','1')
		t.passphrase_new('new key-address list',self.kapasswd)
		t.written_to_file('Encrypted secret keys')
		return t

	def _do_confirm_send(self,t,quiet=False,confirm_send=True,sure=True):
		if sure:
			t.expect('Are you sure you want to broadcast this')
		m = ('YES, I REALLY WANT TO DO THIS','YES')[quiet]
		t.expect(f'{m!r} to confirm: ',('',m)[confirm_send]+'\n')