#!/usr/bin/env python
# vim:fileencoding=utf-8
# License: GPL v3 Copyright: 2016, Kovid Goyal <kovid at kovidgoyal.net>

from functools import partial

from . import BaseTest

from kitty.fast_data_types import parse_bytes, parse_bytes_dump


class CmdDump(list):

    def __call__(self, *a):
        if len(a) == 1:
            a = a[0]
        self.append(a)


class Callbacks:

    def __init__(self):
        self.clear()

    def write_to_child(self, data):
        self.wtcbuf += data

    def clear(self):
        self.wtcbuf = b''


class TestScreen(BaseTest):

    def parse_buytes_dump(self, s, x, *cmds):
        cd = CmdDump()
        if isinstance(x, str):
            x = x.encode('utf-8')
        parse_bytes_dump(s, x, cd)
        self.ae(tuple(cd), cmds)

    def test_simple_parsing(self):
        s = self.create_screen()
        pb = partial(self.parse_buytes_dump, s)

        pb('12')
        self.ae(str(s.line(0)), '12   ')
        pb('3456')
        self.ae(str(s.line(0)), '12345')
        self.ae(str(s.line(1)), '6    ')
        pb(b'\n123\n\r45', ('screen_linefeed', ord('\n')), ('screen_linefeed', ord('\n')), ('screen_carriage_return', ord('\r')))
        self.ae(str(s.line(1)), '6    ')
        self.ae(str(s.line(2)), ' 123 ')
        self.ae(str(s.line(3)), '45   ')
        parse_bytes(s, b'\rabcde')
        self.ae(str(s.line(3)), 'abcde')
        parse_bytes(s, '\rßxyz1'.encode('utf-8'))
        self.ae(str(s.line(3)), 'ßxyz1')
        pb('ニチ '.encode('utf-8'))
        self.ae(str(s.line(4)), 'ニチ ')

    def test_esc_codes(self):
        s = self.create_screen()
        pb = partial(self.parse_buytes_dump, s)
        pb('12\033Da', 'screen_index')
        self.ae(str(s.line(0)), '12   ')
        self.ae(str(s.line(1)), '  a  ')
        pb('\033x', 'Unknown char in escape_dispatch: %d' % ord('x'))
        pb('\033c123', 'screen_reset')
        self.ae(str(s.line(0)), '123  ')

    def test_csi_codes(self):
        s = self.create_screen()
        pb = partial(self.parse_buytes_dump, s)
        pb('abcde')
        s.cursor_back(5)
        pb('x\033[2@y', ('screen_insert_characters', 2))
        self.ae(str(s.line(0)), 'xy bc')
        pb('x\033[2;7@y', ('screen_insert_characters', 2))
        pb('x\033[@y', ('screen_insert_characters', 1))
        pb('x\033[345@y', ('screen_insert_characters', 345))
        pb('x\033[345;@y', ('screen_insert_characters', 345))
        pb('\033[H', ('screen_cursor_position', 1, 1))
        self.ae(s.cursor.x, 0), self.ae(s.cursor.y, 0)
        pb('\033[4H', ('screen_cursor_position', 4, 1))
        pb('\033[3;2H', ('screen_cursor_position', 3, 2))
        pb('\033[3;2;H', ('screen_cursor_position', 3, 2))
        self.ae(s.cursor.x, 1), self.ae(s.cursor.y, 2)
        pb('\033[J', ('screen_erase_in_display', 0, 0))
        pb('\033[?J', ('screen_erase_in_display', 0, 1))
        pb('\033[?2J', ('screen_erase_in_display', 2, 1))
        pb('\033[h')
        pb('\033[20;4h', ('screen_set_mode', 20), ('screen_set_mode', 4))
        pb('\033[?20;5h', ('screen_set_mode', 20 << 5), ('screen_set_mode', 5 << 5))
        pb('\033[20;4;145l', ('screen_reset_mode', 20), ('screen_reset_mode', 4), ('screen_reset_mode', 145))
        s.reset()
        pb('\033[1;3;4;7;9;34;44m', ('select_graphic_rendition', 7))
        for attr in 'bold italic reverse strikethrough'.split():
            self.assertTrue(getattr(s.cursor, attr))
        self.ae(s.cursor.decoration, 1)
        self.ae(s.cursor.fg, 34 << 8 | 1)
        self.ae(s.cursor.bg, 44 << 8 | 1)
        pb('\033[38;5;1;48;5;7m', ('select_graphic_rendition', 6))
        self.ae(s.cursor.fg, 1 << 8 | 2)
        self.ae(s.cursor.bg, 7 << 8 | 2)
        pb('\033[38;2;1;2;3;48;2;7;8;9m', ('select_graphic_rendition', 10))
        self.ae(s.cursor.fg, 1 << 24 | 2 << 16 | 3 << 8 | 3)
        self.ae(s.cursor.bg, 7 << 24 | 8 << 16 | 9 << 8 | 3)
        c = Callbacks()
        s.callbacks = c
        pb('\033[5n', ('report_device_status', 5, 0))
        self.ae(c.wtcbuf, b'\033[0n')
        c.clear()
        pb('\033[6n', ('report_device_status', 6, 0))
        self.ae(c.wtcbuf, b'\033[1;1R')
        pb('12345')
        c.clear()
        pb('\033[6n', ('report_device_status', 6, 0))
        self.ae(c.wtcbuf, b'\033[2;1R')