"""Tests for AI coding assistant detection in telemetry."""

import pytest

from crewai.telemetry.utils import KNOWN_CODING_AGENTS, detect_coding_agent


ALL_MARKERS = (
    "CLAUDECODE",
    "CLAUDE_CODE_ENTRYPOINT",
    "CURSOR_TRACE_ID",
    "CURSOR_AGENT",
    "CODEX_SANDBOX",
    "CODEX_SANDBOX_NETWORK_DISABLED",
    "GEMINI_CLI",
    "AIDER_MODEL",
    "WINDSURF_SESSION_ID",
    "DEVIN_SESSION_ID",
    "REPLIT_AGENT",
    "COPILOT_AGENT_ID",
    "GITHUB_COPILOT_CLI",
    "OPENHANDS_SESSION_ID",
    "CLINE_ACTIVE",
    "AMP_AGENT",
    "TERM_PROGRAM",
    "TERMINAL_EMULATOR",
)


@pytest.fixture
def clean_env(monkeypatch):
    """Remove every marker so each test starts from a known state."""
    for var in ALL_MARKERS:
        monkeypatch.delenv(var, raising=False)
    return monkeypatch


@pytest.mark.parametrize(
    ("env_var", "expected"),
    [
        ("CLAUDECODE", "claude_code"),
        ("CLAUDE_CODE_ENTRYPOINT", "claude_code"),
        ("CURSOR_TRACE_ID", "cursor"),
        ("CURSOR_AGENT", "cursor"),
        ("CODEX_SANDBOX", "codex"),
        ("GEMINI_CLI", "gemini_cli"),
        ("AIDER_MODEL", "aider"),
        ("WINDSURF_SESSION_ID", "windsurf"),
        ("DEVIN_SESSION_ID", "devin"),
        ("REPLIT_AGENT", "replit_agent"),
        ("COPILOT_AGENT_ID", "copilot"),
        ("OPENHANDS_SESSION_ID", "openhands"),
        ("CLINE_ACTIVE", "cline"),
        ("AMP_AGENT", "amp_code"),
    ],
)
def test_detects_each_coding_agent(clean_env, env_var, expected):
    clean_env.setenv(env_var, "1")
    assert detect_coding_agent() == expected


def test_editor_terminal_requires_exact_value(clean_env):
    clean_env.setenv("TERM_PROGRAM", "vscode")
    assert detect_coding_agent() == "vscode_terminal"

    clean_env.setenv("TERM_PROGRAM", "iTerm.app")
    assert detect_coding_agent() != "vscode_terminal"


def test_explicit_agent_marker_wins_over_editor_terminal(clean_env):
    clean_env.setenv("TERM_PROGRAM", "vscode")
    clean_env.setenv("CLAUDECODE", "1")
    assert detect_coding_agent() == "claude_code"


def test_empty_marker_value_is_ignored(clean_env):
    clean_env.setenv("CLAUDECODE", "")
    assert detect_coding_agent() != "claude_code"


def test_falls_back_to_non_interactive_without_tty(clean_env, monkeypatch):
    monkeypatch.setattr("sys.stdout", type("S", (), {"isatty": lambda self: False})())
    assert detect_coding_agent() == "non_interactive"


def test_falls_back_to_unknown_with_tty(clean_env, monkeypatch):
    monkeypatch.setattr("sys.stdout", type("S", (), {"isatty": lambda self: True})())
    assert detect_coding_agent() == "unknown"


def test_never_returns_env_var_value(clean_env):
    """The detected name must never leak the environment variable's contents."""
    secret = "sk-super-secret-token"
    clean_env.setenv("CURSOR_TRACE_ID", secret)
    assert secret not in detect_coding_agent()


def test_handles_broken_stdout(clean_env, monkeypatch):
    class BrokenStdout:
        def isatty(self):
            raise ValueError("detached")

    monkeypatch.setattr("sys.stdout", BrokenStdout())
    assert detect_coding_agent() == "unknown"


def test_result_is_always_a_known_literal(clean_env):
    """PII guarantee: the return value can only ever be a known literal.

    Every marker is set to a value that would be catastrophic to emit, and the
    result must still come from the fixed vocabulary.
    """
    sensitive = "/Users/jane.doe/secrets/api-key-sk-live-1234"

    for var in ALL_MARKERS:
        clean_env.setenv(var, sensitive)
        result = detect_coding_agent()
        assert result in KNOWN_CODING_AGENTS
        assert sensitive not in result
        clean_env.delenv(var, raising=False)


def test_known_agents_contains_no_pii_shaped_values():
    """Every possible emitted value is a short, opaque identifier."""
    for name in KNOWN_CODING_AGENTS:
        assert name.replace("_", "").isalnum(), name
        assert len(name) <= 32, name


def test_coding_agent_attached_to_telemetry_resource(clean_env, monkeypatch):
    """The attribute must land on the Resource, so it reaches every span."""
    import os
    from unittest.mock import patch

    from crewai.telemetry.telemetry import Telemetry

    clean_env.setenv("CLAUDECODE", "1")

    with (
        patch.dict(
            os.environ,
            {
                "CREWAI_DISABLE_TELEMETRY": "false",
                "CREWAI_DISABLE_TRACKING": "false",
                "OTEL_SDK_DISABLED": "false",
            },
        ),
        patch("crewai.telemetry.telemetry.TracerProvider"),
    ):
        telemetry = Telemetry()
        telemetry._initialized = False
        telemetry.__init__()

    assert telemetry.resource.attributes["coding_agent"] == "claude_code"


def test_coding_agent_span_emits_once(clean_env, monkeypatch):
    from crewai.telemetry.telemetry import Telemetry

    clean_env.setenv("CLAUDECODE", "1")

    telemetry = Telemetry()
    telemetry._coding_agent_reported = False

    emitted: list[str] = []
    monkeypatch.setattr(telemetry, "feature_usage_span", emitted.append)

    telemetry.coding_agent_span()
    telemetry.coding_agent_span()
    telemetry.coding_agent_span()

    assert emitted == ["coding_agent:claude_code"]