"""rawcli Phase 1 — session state, breadcrumb, trace rendering, CLI dispatch. Hardware-free."""
import re

import pytest

from pm3py.cli.main import build_parser, main
from pm3py.cli.rawcli.session import RawSession
from pm3py.cli.rawcli.trace_view import render_exchange
from pm3py.cli.rawcli.parser import parse_token, parse_bytes, parse_line
from pm3py.cli.rawcli.entry import byte_space
from pm3py.cli.rawcli.app import dispatch

_ANSI = re.compile(r"\x1b\[[0-9;]*m")


def _plain(s: str) -> str:
    return _ANSI.sub("", s)


class TestBreadcrumb:
    def test_default(self):
        assert RawSession().breadcrumb() == "[raw / 0x]"

    def test_toggle_to_binary(self):
        s = RawSession()
        assert s.toggle_entry_mode() == "bin"
        assert s.entry_prefix == "0b"
        assert s.breadcrumb() == "[raw / 0b]"
        assert s.toggle_entry_mode() == "hex"
        assert s.breadcrumb() == "[raw / 0x]"

    def test_identified_fills_segments(self):
        s = RawSession()
        s.field = "hf"
        s.transponder = "NTAG215"
        assert s.breadcrumb() == "[raw / hf / NTAG215 / 0x]"

    def test_field_only(self):
        s = RawSession()
        s.field = "lf"
        assert s.breadcrumb() == "[raw / lf / 0x]"


class TestTraceView:
    def test_command_and_response_lines(self):
        out = _plain(render_exchange(bytes([0x30, 0x04]),
                                     bytes([0x00, 0x01, 0x02, 0x03]),
                                     protocol="hf14a", is_tty=False))
        assert "Reader → Tag" in out
        assert "Tag → Reader" in out
        assert "30 04" in out            # command bytes shown

    def test_command_only_when_no_response(self):
        out = _plain(render_exchange(bytes([0x26]), None, protocol="hf14a", is_tty=False))
        assert "Reader → Tag" in out
        assert "Tag → Reader" not in out

    def test_annotation_present_for_known_command(self):
        # 0x30 = 14a READ; the decoder should annotate it (exact text may vary)
        out = _plain(render_exchange(bytes([0x30, 0x04]), None, protocol="hf14a", is_tty=False))
        assert "READ" in out.upper()


class TestCliDispatch:
    def test_rawcli_subcommand_parsed(self):
        args = build_parser().parse_args(["rawcli", "--port", "/dev/ttyACM0"])
        assert args.command == "rawcli" and args.port == "/dev/ttyACM0"

    def test_no_command_prints_help(self, capsys):
        rc = main([])
        assert rc == 1
        assert "rawcli" in capsys.readouterr().out


class TestParser:
    def test_hex_tokens(self):
        assert parse_token("30") == b"\x30"
        assert parse_token("0x3004") == b"\x30\x04"
        assert parse_bytes("30 04") == b"\x30\x04"
        assert parse_bytes("3004") == b"\x30\x04"       # default hex mode

    def test_binary_tokens(self):
        assert parse_token("0b00110000") == b"\x30"
        assert parse_token("00110000", "bin") == b"\x30"

    def test_intermixed(self):
        assert parse_bytes("0b00110000 0x04") == b"\x30\x04"
        assert parse_bytes("0x30 00000100", "bin") == b"\x30\x04"   # bare token uses mode

    def test_bad_tokens(self):
        with pytest.raises(ValueError):
            parse_token("303")          # odd hex
        with pytest.raises(ValueError):
            parse_token("0b0011")       # not a whole byte

    def test_classify_control(self):
        c = parse_line("identify")
        assert c.kind == "control" and c.name == "identify"
        assert parse_line("help ntag215").kind == "control"

    def test_classify_call(self):
        c = parse_line("READ(4)")
        assert c.kind == "call" and c.name == "READ" and c.args == ["4"]
        c = parse_line("WRITE(4, 0x00112233)")
        assert c.args == ["4", "0x00112233"]
        assert parse_line("GET_DATA()").kind == "call"

    def test_classify_raw(self):
        c = parse_line("30 04")
        assert c.kind == "raw" and c.payload == b"\x30\x04"


class TestByteSpace:
    def test_hex_grouping(self):
        assert byte_space("3004", "hex") == "30 04"
        assert byte_space("300", "hex") == "30 0"
        assert byte_space("30 04", "hex") == "30 04"     # idempotent

    def test_binary_grouping(self):
        assert byte_space("0011000000000100", "bin") == "00110000 00000100"

    def test_prefixed_left_alone(self):
        assert byte_space("0x3004", "hex") == "0x3004"   # explicit prefix not mangled


class TestDispatch:
    def test_quit_returns_false(self):
        assert dispatch(RawSession(), "quit") is False

    def test_help_prints(self, capsys):
        assert dispatch(RawSession(), "help") is True
        assert "rawcli" in capsys.readouterr().out

    def test_raw_renders_without_device(self, capsys):
        assert dispatch(RawSession(), "30 04") is True
        assert "30 04" in _plain(capsys.readouterr().out)

    def test_bad_hex_reports(self, capsys):
        assert dispatch(RawSession(), "0b0011") is True
        assert "whole number of bytes" in capsys.readouterr().out