"""Tests for network namespace encoding/decoding."""

from bouncer.irc import IRCMessage
from bouncer.namespace import (
    decode_channel,
    decode_target,
    encode_channel,
    encode_message,
    encode_nick,
    encode_prefix,
)

OWN = {"libera": "mybot", "oftc": "mybot2"}


class TestEncodeChannel:
    def test_basic(self):
        assert encode_channel("#libera", "libera") == "#libera/libera"

    def test_preserves_prefix(self):
        assert encode_channel("&local", "net") == "&local/net"


class TestDecodeChannel:
    def test_basic(self):
        assert decode_channel("#libera/libera") == ("#libera", "libera")

    def test_no_separator(self):
        assert decode_channel("#libera") == ("#libera", None)

    def test_channel_with_slash_in_name(self):
        # Edge: channel name itself contains slash -- rfind picks the last one
        assert decode_channel("#a/b/net") == ("#a/b", "net")


class TestEncodeNick:
    def test_foreign_nick(self):
        assert encode_nick("user123", "libera", OWN) == "user123/libera"

    def test_own_nick_bare(self):
        assert encode_nick("mybot", "libera", OWN) == "mybot"

    def test_own_nick_other_network(self):
        # Own nick on another network still shown bare
        assert encode_nick("mybot2", "libera", OWN) == "mybot2"

    def test_own_nick_rewritten_to_client_nick(self):
        assert encode_nick("mybot", "libera", OWN, client_nick="tester") == "tester"

    def test_foreign_nick_unaffected_by_client_nick(self):
        assert encode_nick("user123", "libera", OWN, client_nick="tester") == "user123/libera"


class TestEncodePrefix:
    def test_full_prefix(self):
        result = encode_prefix("user!ident@host", "libera", OWN)
        assert result == "user/libera!ident@host"

    def test_own_prefix(self):
        result = encode_prefix("mybot!ident@host", "libera", OWN)
        assert result == "mybot!ident@host"

    def test_nick_only(self):
        result = encode_prefix("server.example.com", "libera", OWN)
        assert result == "server.example.com/libera"


class TestDecodeTarget:
    def test_channel(self):
        assert decode_target("#libera/libera") == ("#libera", "libera")

    def test_nick(self):
        assert decode_target("user123/libera") == ("user123", "libera")

    def test_bare(self):
        assert decode_target("#libera") == ("#libera", None)


class TestEncodeMessage:
    def test_privmsg_channel(self):
        msg = IRCMessage(
            command="PRIVMSG",
            params=["#test", "hello"],
            prefix="user!ident@host",
        )
        out = encode_message(msg, "libera", OWN)
        assert out.params[0] == "#test/libera"
        assert out.prefix == "user/libera!ident@host"

    def test_privmsg_own_prefix(self):
        msg = IRCMessage(
            command="PRIVMSG",
            params=["#test", "hello"],
            prefix="mybot!ident@host",
        )
        out = encode_message(msg, "libera", OWN)
        assert out.prefix == "mybot!ident@host"

    def test_namreply(self):
        msg = IRCMessage(
            command="353",
            params=["mybot", "=", "#test", "@op +voice regular mybot"],
        )
        out = encode_message(msg, "libera", OWN)
        assert out.params[2] == "#test/libera"
        names = out.params[3].split()
        assert names[0] == "@op/libera"
        assert names[1] == "+voice/libera"
        assert names[2] == "regular/libera"
        assert names[3] == "mybot"  # own nick stays bare

    def test_nick_change(self):
        msg = IRCMessage(
            command="NICK",
            params=["newnick"],
            prefix="oldnick!user@host",
        )
        out = encode_message(msg, "libera", OWN)
        assert out.params[0] == "newnick/libera"
        assert out.prefix == "oldnick/libera!user@host"

    def test_join(self):
        msg = IRCMessage(
            command="JOIN",
            params=["#test"],
            prefix="user!ident@host",
        )
        out = encode_message(msg, "libera", OWN)
        assert out.params[0] == "#test/libera"

    def test_non_channel_target_untouched(self):
        msg = IRCMessage(
            command="PRIVMSG",
            params=["someuser", "hi"],
            prefix="other!ident@host",
        )
        out = encode_message(msg, "libera", OWN)
        # Private message to a nick -- params[0] is not a channel, left as-is
        assert out.params[0] == "someuser"

    def test_no_raw_preserved(self):
        msg = IRCMessage(
            command="PRIVMSG",
            params=["#test", "hello"],
            prefix="user!ident@host",
            raw=b":user!ident@host PRIVMSG #test :hello\r\n",
        )
        out = encode_message(msg, "libera", OWN)
        assert out.raw is None  # raw must not carry over

    def test_own_prefix_rewritten_to_client_nick(self):
        msg = IRCMessage(
            command="PRIVMSG",
            params=["#test", "hello"],
            prefix="mybot!ident@host",
        )
        out = encode_message(msg, "libera", OWN, client_nick="tester")
        assert out.prefix == "tester!ident@host"

    def test_namreply_own_nick_rewritten(self):
        msg = IRCMessage(
            command="353",
            params=["mybot", "=", "#test", "@op mybot"],
        )
        out = encode_message(msg, "libera", OWN, client_nick="tester")
        names = out.params[3].split()
        assert names[0] == "@op/libera"
        assert names[1] == "tester"