"""Tests for telemetry.py — fire-and-forget PostHog plugin telemetry."""

from __future__ import annotations

import json
import os
import sys
import urllib.error

SCRIPTS_DIR = os.path.join(os.path.dirname(__file__), "..", "scripts")
sys.path.insert(0, os.path.abspath(SCRIPTS_DIR))


def test_import_succeeds():
    import telemetry

    assert hasattr(telemetry, "emit")
    assert hasattr(telemetry, "main")


def test_opt_out_skips_send(monkeypatch):
    import telemetry

    monkeypatch.setenv("MEM0_TELEMETRY", "false")
    sent = []
    monkeypatch.setattr(telemetry, "send", lambda p: sent.append(p))
    telemetry.emit("session_start")
    assert sent == []


def test_opt_out_variants(monkeypatch):
    import telemetry

    for val in ("0", "no", "off", "FALSE", "No"):
        monkeypatch.setenv("MEM0_TELEMETRY", val)
        assert not telemetry.is_enabled()


def test_enabled_by_default(monkeypatch):
    import telemetry

    monkeypatch.delenv("MEM0_TELEMETRY", raising=False)
    assert telemetry.is_enabled()


def test_posthog_payload_structure(monkeypatch):
    import telemetry

    monkeypatch.setenv("MEM0_RESOLVED_USER_ID", "testuser")
    monkeypatch.setenv("MEM0_PROJECT_ID", "test-project")
    monkeypatch.delenv("MEM0_API_KEY", raising=False)
    monkeypatch.delenv("CLAUDE_PLUGIN_OPTION_MEM0_API_KEY", raising=False)

    payload = telemetry.build_posthog_payload("plugin.session_start", {"memory_count": 5})

    assert payload["api_key"] == telemetry.POSTHOG_API_KEY
    assert payload["event"] == "plugin.session_start"
    assert "distinct_id" in payload
    assert payload["properties"]["source"] == "plugin"
    assert isinstance(payload["properties"]["plugin_version"], str)
    assert payload["properties"]["plugin_version"] != ""
    assert payload["properties"]["memory_count"] == 5
    assert payload["properties"]["$process_person_profile"] is False

    raw = json.dumps(payload)
    assert "testuser" not in raw
    assert "test-project" not in raw


def test_system_props_override_caller_props(monkeypatch):
    """H8: system properties must win over caller-supplied properties."""
    import telemetry

    monkeypatch.setenv("MEM0_RESOLVED_USER_ID", "testuser")
    monkeypatch.setenv("MEM0_PROJECT_ID", "test-project")
    monkeypatch.delenv("MEM0_API_KEY", raising=False)
    monkeypatch.delenv("CLAUDE_PLUGIN_OPTION_MEM0_API_KEY", raising=False)

    # Caller tries to override system-controlled properties
    caller_props = {
        "source": "CALLER_OVERRIDE",
        "platform": "CALLER_OVERRIDE",
        "plugin_version": "CALLER_OVERRIDE",
        "memory_count": 42,
    }
    payload = telemetry.build_posthog_payload("plugin.test", caller_props)
    props = payload["properties"]

    # System props must win
    assert props["source"] == "plugin"
    assert props["platform"] == telemetry.detect_platform()
    assert props["plugin_version"] == telemetry._load_plugin_version(telemetry.detect_platform())
    # Caller-only props still present
    assert props["memory_count"] == 42


def test_distinct_id_from_api_key(monkeypatch):
    import hashlib

    import telemetry

    monkeypatch.setenv("MEM0_API_KEY", "m0-testkey123")
    expected = hashlib.sha256(b"m0-testkey123").hexdigest()[:32]
    assert telemetry._distinct_id() == expected


def test_distinct_id_fallback_no_key(monkeypatch):
    import telemetry

    monkeypatch.delenv("MEM0_API_KEY", raising=False)
    monkeypatch.delenv("CLAUDE_PLUGIN_OPTION_MEM0_API_KEY", raising=False)
    monkeypatch.setenv("MEM0_RESOLVED_USER_ID", "kartik")
    assert telemetry._distinct_id() == telemetry._sha256("kartik")


def test_hash_deterministic():
    import telemetry

    h1 = telemetry._sha256("same-value")
    h2 = telemetry._sha256("same-value")
    assert h1 == h2
    assert h1 != telemetry._sha256("different-value")


def test_platform_claude_code(monkeypatch):
    import telemetry

    monkeypatch.delenv("MEM0_PLATFORM", raising=False)
    monkeypatch.delenv("ANTIGRAVITY_PLUGIN_ROOT", raising=False)
    monkeypatch.delenv("PLUGIN_ROOT", raising=False)
    monkeypatch.delenv("CURSOR_PLUGIN_ROOT", raising=False)
    monkeypatch.setenv("CLAUDECODE", "1")
    assert telemetry.detect_platform() == "claude-code"


def test_platform_cursor(monkeypatch):
    import telemetry

    monkeypatch.delenv("MEM0_PLATFORM", raising=False)
    monkeypatch.delenv("ANTIGRAVITY_PLUGIN_ROOT", raising=False)
    monkeypatch.delenv("PLUGIN_ROOT", raising=False)
    monkeypatch.delenv("CLAUDECODE", raising=False)
    monkeypatch.delenv("CLAUDE_PLUGIN_ROOT", raising=False)
    monkeypatch.setenv("CURSOR_PLUGIN_ROOT", "/path")
    assert telemetry.detect_platform() == "cursor"


def test_platform_codex(monkeypatch):
    import telemetry

    monkeypatch.delenv("MEM0_PLATFORM", raising=False)
    monkeypatch.delenv("ANTIGRAVITY_PLUGIN_ROOT", raising=False)
    monkeypatch.delenv("CLAUDECODE", raising=False)
    monkeypatch.delenv("CLAUDE_PLUGIN_ROOT", raising=False)
    monkeypatch.delenv("CURSOR_PLUGIN_ROOT", raising=False)
    monkeypatch.setenv("PLUGIN_ROOT", "/path")
    assert telemetry.detect_platform() == "codex"


def test_platform_explicit_override(monkeypatch):
    """MEM0_PLATFORM wins over auto-detection so each editor can label
    itself reliably even when host env vars are ambiguous or absent."""
    import telemetry

    monkeypatch.setenv("CLAUDE_PLUGIN_ROOT", "/path")  # conflicting auto-signal
    monkeypatch.setenv("MEM0_PLATFORM", "cursor")
    assert telemetry.detect_platform() == "cursor"


def test_platform_antigravity(monkeypatch):
    """Antigravity sets CLAUDE_PLUGIN_ROOT for compatibility but must be
    attributed to its own platform, not claude-code."""
    import telemetry

    monkeypatch.delenv("MEM0_PLATFORM", raising=False)
    monkeypatch.setenv("ANTIGRAVITY_PLUGIN_ROOT", "/ext")
    monkeypatch.setenv("CLAUDE_PLUGIN_ROOT", "/ext")  # antigravity sets both
    assert telemetry.detect_platform() == "antigravity"


def test_plugin_version_is_per_editor(monkeypatch):
    """Each editor reports the version from its OWN manifest. Antigravity is on
    a 0.1.x line while Claude/Cursor/Codex are on 0.2.x, so they must not all
    report the same shared version."""
    import telemetry

    plugin_dir = os.path.join(os.path.dirname(__file__), "..")
    manifests = {
        "antigravity": "plugin.json",
        "claude-code": os.path.join(".claude-plugin", "plugin.json"),
        "cursor": os.path.join(".cursor-plugin", "plugin.json"),
        "codex": os.path.join(".codex-plugin", "plugin.json"),
    }
    for plat, rel in manifests.items():
        monkeypatch.setenv("MEM0_PLATFORM", plat)
        with open(os.path.join(plugin_dir, rel)) as f:
            expected = json.load(f)["version"]
        payload = telemetry.build_posthog_payload("plugin.test")
        assert payload["properties"]["plugin_version"] == expected, f"{plat} should report {expected} from {rel}"


def test_send_fails_silently(monkeypatch):
    import telemetry

    def raise_error(req, timeout):
        raise urllib.error.URLError("connection refused")

    monkeypatch.setattr(telemetry.urllib.request, "urlopen", raise_error)
    telemetry.send({"event": "test"})


def test_cli_exits_zero_when_disabled(monkeypatch):
    import telemetry

    monkeypatch.setenv("MEM0_TELEMETRY", "false")
    monkeypatch.setattr(sys, "argv", ["telemetry.py", "session_start"])
    assert telemetry.main() == 0


def test_cli_no_args_exits_nonzero(monkeypatch):
    import telemetry

    monkeypatch.delenv("MEM0_TELEMETRY", raising=False)
    monkeypatch.setattr(sys, "argv", ["telemetry.py"])
    assert telemetry.main() == 1


def test_cursor_wrappers_pin_platform():
    """Cursor wrappers delegate to the shared scripts, which auto-detect the
    platform from host env vars. Since Cursor may not export CURSOR_PLUGIN_ROOT
    to the subprocess, each wrapper must pin MEM0_PLATFORM=cursor so the
    delegated telemetry is attributed to cursor, not the 'plugin' fallback."""
    scripts_dir = os.path.join(os.path.dirname(__file__), "..", "scripts")
    cursor_wrappers = [
        "on_session_start_cursor.sh",
        "on_user_prompt_cursor.sh",
        "on_post_tool_use_cursor.sh",
        "on_pre_compact_cursor.sh",
        "on_stop_cursor.sh",
    ]
    for name in cursor_wrappers:
        with open(os.path.join(scripts_dir, name)) as f:
            content = f.read()
        assert "export MEM0_PLATFORM=cursor" in content, f"{name} must `export MEM0_PLATFORM=cursor` before delegating"


def test_codex_hooks_pin_platform():
    """Codex installs standalone hooks (absolute paths) via install_codex_hooks.py,
    so PLUGIN_ROOT is not set at runtime and the platform falls back to 'plugin'.
    Codex runs hook commands through a shell, so every command pins
    MEM0_PLATFORM=codex inline for correct attribution."""
    hooks_path = os.path.join(os.path.dirname(__file__), "..", "hooks", "codex-hooks.json")
    with open(hooks_path) as f:
        config = json.load(f)

    commands = [
        h["command"] for entries in config["hooks"].values() for entry in entries for h in entry.get("hooks", [])
    ]
    assert commands, "expected at least one codex hook command"
    for cmd in commands:
        assert "MEM0_PLATFORM=codex" in cmd, f"codex hook command missing platform pin: {cmd}"