"""Unit tests for domain management tools."""

import json
from unittest.mock import patch, MagicMock

import pytest

from haproxy_mcp.exceptions import HaproxyError
from haproxy_mcp.file_ops import add_domain_to_map


class TestHaproxyListDomains:
    """Tests for haproxy_list_domains tool function."""

    def test_list_empty_domains(self, mock_socket_class, mock_select, patch_config_paths, response_builder):
        """List domains when none configured."""
        mock_sock = mock_socket_class(responses={
            "show servers state": response_builder.servers_state([]),
        })

        with patch("socket.socket", return_value=mock_sock):
            # Import here to get patched config
            from haproxy_mcp.tools.domains import register_domain_tools
            mcp = MagicMock()
            registered_tools = {}

            def capture_tool():
                def decorator(func):
                    registered_tools[func.__name__] = func
                    return func
                return decorator

            mcp.tool = capture_tool
            register_domain_tools(mcp)

            result = registered_tools["haproxy_list_domains"](include_wildcards=False)

        assert result == "No domains configured"

    def test_list_domains_with_servers(self, mock_socket_class, mock_select, patch_config_paths, response_builder):
        """List domains with configured servers."""
        # Add domain to DB
        add_domain_to_map("example.com", "pool_1")

        mock_sock = mock_socket_class(responses={
            "show servers state": response_builder.servers_state([
                {"be_name": "pool_1", "srv_name": "pool_1_1", "srv_addr": "10.0.0.1", "srv_port": 80},
            ]),
        })

        with patch("socket.socket", return_value=mock_sock):
            from haproxy_mcp.tools.domains import register_domain_tools
            mcp = MagicMock()
            registered_tools = {}

            def capture_tool():
                def decorator(func):
                    registered_tools[func.__name__] = func
                    return func
                return decorator

            mcp.tool = capture_tool
            register_domain_tools(mcp)

            result = registered_tools["haproxy_list_domains"](include_wildcards=False)

        assert "example.com" in result
        assert "pool_1" in result
        assert "10.0.0.1" in result

    def test_list_domains_exclude_wildcards(self, mock_socket_class, mock_select, patch_config_paths, response_builder):
        """List domains excluding wildcards by default."""
        add_domain_to_map("example.com", "pool_1")
        add_domain_to_map(".example.com", "pool_1", is_wildcard=True)

        mock_sock = mock_socket_class(responses={
            "show servers state": response_builder.servers_state([]),
        })

        with patch("socket.socket", return_value=mock_sock):
            from haproxy_mcp.tools.domains import register_domain_tools
            mcp = MagicMock()
            registered_tools = {}

            def capture_tool():
                def decorator(func):
                    registered_tools[func.__name__] = func
                    return func
                return decorator

            mcp.tool = capture_tool
            register_domain_tools(mcp)

            result = registered_tools["haproxy_list_domains"](include_wildcards=False)

        assert "example.com" in result
        assert ".example.com" not in result

    def test_list_domains_include_wildcards(self, mock_socket_class, mock_select, patch_config_paths, response_builder):
        """List domains including wildcards when requested."""
        add_domain_to_map("example.com", "pool_1")
        add_domain_to_map(".example.com", "pool_1", is_wildcard=True)

        mock_sock = mock_socket_class(responses={
            "show servers state": response_builder.servers_state([]),
        })

        with patch("socket.socket", return_value=mock_sock):
            from haproxy_mcp.tools.domains import register_domain_tools
            mcp = MagicMock()
            registered_tools = {}

            def capture_tool():
                def decorator(func):
                    registered_tools[func.__name__] = func
                    return func
                return decorator

            mcp.tool = capture_tool
            register_domain_tools(mcp)

            result = registered_tools["haproxy_list_domains"](include_wildcards=True)

        assert "example.com" in result
        assert ".example.com" in result


class TestHaproxyAddDomain:
    """Tests for haproxy_add_domain tool function."""

    def test_add_domain_invalid_format(self, patch_config_paths):
        """Reject invalid domain format."""
        from haproxy_mcp.tools.domains import register_domain_tools
        mcp = MagicMock()
        registered_tools = {}

        def capture_tool():
            def decorator(func):
                registered_tools[func.__name__] = func
                return func
            return decorator

        mcp.tool = capture_tool
        register_domain_tools(mcp)

        result = registered_tools["haproxy_add_domain"](
            domain="-invalid.com",
            ip="",
            http_port=80
        )

        assert "Error" in result
        assert "Invalid domain" in result

    def test_add_domain_invalid_ip(self, patch_config_paths):
        """Reject invalid IP address."""
        from haproxy_mcp.tools.domains import register_domain_tools
        mcp = MagicMock()
        registered_tools = {}

        def capture_tool():
            def decorator(func):
                registered_tools[func.__name__] = func
                return func
            return decorator

        mcp.tool = capture_tool
        register_domain_tools(mcp)

        result = registered_tools["haproxy_add_domain"](
            domain="example.com",
            ip="not-an-ip",
            http_port=80
        )

        assert "Error" in result
        assert "Invalid IP" in result

    def test_add_domain_invalid_port(self, patch_config_paths):
        """Reject invalid port."""
        from haproxy_mcp.tools.domains import register_domain_tools
        mcp = MagicMock()
        registered_tools = {}

        def capture_tool():
            def decorator(func):
                registered_tools[func.__name__] = func
                return func
            return decorator

        mcp.tool = capture_tool
        register_domain_tools(mcp)

        result = registered_tools["haproxy_add_domain"](
            domain="example.com",
            ip="10.0.0.1",
            http_port=70000
        )

        assert "Error" in result
        assert "Port" in result

    def test_add_domain_starts_with_dot(self, patch_config_paths):
        """Reject domain starting with dot (wildcard)."""
        from haproxy_mcp.tools.domains import register_domain_tools
        mcp = MagicMock()
        registered_tools = {}

        def capture_tool():
            def decorator(func):
                registered_tools[func.__name__] = func
                return func
            return decorator

        mcp.tool = capture_tool
        register_domain_tools(mcp)

        result = registered_tools["haproxy_add_domain"](
            domain=".example.com",
            ip="",
            http_port=80
        )

        assert "Error" in result
        assert "cannot start with '.'" in result

    def test_add_domain_already_exists(self, mock_socket_class, mock_select, patch_config_paths, response_builder):
        """Reject adding domain that already exists."""
        add_domain_to_map("example.com", "pool_1")

        from haproxy_mcp.tools.domains import register_domain_tools
        mcp = MagicMock()
        registered_tools = {}

        def capture_tool():
            def decorator(func):
                registered_tools[func.__name__] = func
                return func
            return decorator

        mcp.tool = capture_tool
        register_domain_tools(mcp)

        result = registered_tools["haproxy_add_domain"](
            domain="example.com",
            ip="",
            http_port=80
        )

        assert "Error" in result
        assert "already exists" in result

    def test_add_domain_success_without_ip(self, mock_socket_class, mock_select, patch_config_paths, response_builder, mock_subprocess):
        """Successfully add domain without IP."""
        mock_sock = mock_socket_class(responses={
            "add map": "",
        })

        with patch("socket.socket", return_value=mock_sock):
            from haproxy_mcp.tools.domains import register_domain_tools
            mcp = MagicMock()
            registered_tools = {}

            def capture_tool():
                def decorator(func):
                    registered_tools[func.__name__] = func
                    return func
                return decorator

            mcp.tool = capture_tool
            register_domain_tools(mcp)

            result = registered_tools["haproxy_add_domain"](
                domain="newdomain.com",
                ip="",
                http_port=80
            )

        assert "newdomain.com" in result
        assert "pool_1" in result
        assert "no servers configured" in result

    def test_add_domain_success_with_ip(self, mock_socket_class, mock_select, patch_config_paths, response_builder, mock_subprocess):
        """Successfully add domain with IP."""
        mock_sock = mock_socket_class(responses={
            "add map": "",
            "set server": "",
        })

        with patch("socket.socket", return_value=mock_sock):
            from haproxy_mcp.tools.domains import register_domain_tools
            mcp = MagicMock()
            registered_tools = {}

            def capture_tool():
                def decorator(func):
                    registered_tools[func.__name__] = func
                    return func
                return decorator

            mcp.tool = capture_tool
            register_domain_tools(mcp)

            result = registered_tools["haproxy_add_domain"](
                domain="newdomain.com",
                ip="10.0.0.1",
                http_port=8080
            )

        assert "newdomain.com" in result
        assert "pool_1" in result
        assert "10.0.0.1:8080" in result


class TestHaproxyRemoveDomain:
    """Tests for haproxy_remove_domain tool function."""

    def test_remove_domain_invalid_format(self, patch_config_paths):
        """Reject invalid domain format."""
        from haproxy_mcp.tools.domains import register_domain_tools
        mcp = MagicMock()
        registered_tools = {}

        def capture_tool():
            def decorator(func):
                registered_tools[func.__name__] = func
                return func
            return decorator

        mcp.tool = capture_tool
        register_domain_tools(mcp)

        result = registered_tools["haproxy_remove_domain"](domain="-invalid.com")

        assert "Error" in result
        assert "Invalid domain" in result

    def test_remove_domain_not_found(self, patch_config_paths):
        """Reject removing domain that doesn't exist."""
        from haproxy_mcp.tools.domains import register_domain_tools
        mcp = MagicMock()
        registered_tools = {}

        def capture_tool():
            def decorator(func):
                registered_tools[func.__name__] = func
                return func
            return decorator

        mcp.tool = capture_tool
        register_domain_tools(mcp)

        result = registered_tools["haproxy_remove_domain"](domain="nonexistent.com")

        assert "Error" in result
        assert "not found" in result

    def test_remove_legacy_domain_rejected(self, patch_config_paths):
        """Reject removing legacy (non-pool) domain."""
        add_domain_to_map("example.com", "legacy_backend")

        from haproxy_mcp.tools.domains import register_domain_tools
        mcp = MagicMock()
        registered_tools = {}

        def capture_tool():
            def decorator(func):
                registered_tools[func.__name__] = func
                return func
            return decorator

        mcp.tool = capture_tool
        register_domain_tools(mcp)

        result = registered_tools["haproxy_remove_domain"](domain="example.com")

        assert "Error" in result
        assert "legacy" in result.lower()

    def test_remove_domain_success(self, mock_socket_class, mock_select, patch_config_paths, response_builder):
        """Successfully remove domain."""
        add_domain_to_map("example.com", "pool_1")
        add_domain_to_map(".example.com", "pool_1", is_wildcard=True)

        mock_sock = mock_socket_class(responses={
            "del map": "",
            "set server": "",
        })

        with patch("socket.socket", return_value=mock_sock):
            from haproxy_mcp.tools.domains import register_domain_tools
            mcp = MagicMock()
            registered_tools = {}

            def capture_tool():
                def decorator(func):
                    registered_tools[func.__name__] = func
                    return func
                return decorator

            mcp.tool = capture_tool
            register_domain_tools(mcp)

            result = registered_tools["haproxy_remove_domain"](domain="example.com")

        assert "example.com" in result
        assert "removed" in result.lower()


class TestCheckCertificateCoverage:
    """Tests for check_certificate_coverage function."""

    def test_no_cert_directory(self, tmp_path):
        """No certificate coverage when directory doesn't exist."""
        from haproxy_mcp.tools.domains import check_certificate_coverage

        with patch("haproxy_mcp.tools.domains.CERTS_DIR", str(tmp_path / "nonexistent")):
            covered, info = check_certificate_coverage("example.com")

        assert covered is False
        assert "not found" in info.lower()

    def test_exact_cert_match(self, tmp_path):
        """Exact certificate match."""
        from haproxy_mcp.tools.domains import check_certificate_coverage

        certs_dir = tmp_path / "certs"
        certs_dir.mkdir()
        (certs_dir / "example.com.pem").write_text("cert content")

        with patch("haproxy_mcp.tools.domains.CERTS_DIR", str(certs_dir)):
            covered, info = check_certificate_coverage("example.com")

        assert covered is True
        assert info == "example.com"

    def test_wildcard_cert_coverage(self, tmp_path, mock_subprocess):
        """Wildcard certificate covers subdomain."""
        from haproxy_mcp.tools.domains import check_certificate_coverage

        certs_dir = tmp_path / "certs"
        certs_dir.mkdir()
        (certs_dir / "example.com.pem").write_text("cert content")

        # Mock openssl output showing wildcard SAN
        mock_subprocess.return_value = MagicMock(
            returncode=0,
            stdout="X509v3 Subject Alternative Name:\n    DNS:example.com, DNS:*.example.com"
        )

        with patch("haproxy_mcp.tools.domains.CERTS_DIR", str(certs_dir)):
            covered, info = check_certificate_coverage("api.example.com")

        assert covered is True
        assert "wildcard" in info

    def test_no_matching_cert(self, tmp_path):
        """No matching certificate."""
        from haproxy_mcp.tools.domains import check_certificate_coverage

        certs_dir = tmp_path / "certs"
        certs_dir.mkdir()

        with patch("haproxy_mcp.tools.domains.CERTS_DIR", str(certs_dir)):
            covered, info = check_certificate_coverage("example.com")

        assert covered is False
        assert "No matching" in info