"""Tests for deploy/hooks/capture_stop.py — Claude Code Stop hook."""

from __future__ import annotations

import json
import os
import sys
import tempfile
import textwrap
from io import StringIO
from pathlib import Path
from unittest import mock

import pytest

# The hook script lives outside of the normal package tree, so import
# it by manipulating sys.path.
_HOOK_DIR = str(Path(__file__).resolve().parent.parent / "deploy" / "hooks")
if _HOOK_DIR not in sys.path:
    sys.path.insert(0, _HOOK_DIR)

import capture_stop  # noqa: E402


# ---------------------------------------------------------------------------
# Helpers
# ---------------------------------------------------------------------------

def _write_transcript(tmp: Path, entries: list[dict]) -> str:
    """Write a JSONL transcript and return the path."""
    path = tmp / "transcript.jsonl"
    with open(path, "w", encoding="utf-8") as f:
        for entry in entries:
            f.write(json.dumps(entry, ensure_ascii=False) + "\n")
    return str(path)


def _user_entry(content: str, *, is_meta: bool = False) -> dict:
    return {
        "type": "user",
        "isMeta": is_meta,
        "message": {"role": "user", "content": content},
    }


def _assistant_entry() -> dict:
    return {
        "type": "assistant",
        "message": {
            "role": "assistant",
            "content": [{"type": "text", "text": "Sure, here's the answer."}],
        },
    }


def _system_entry() -> dict:
    return {"type": "system", "message": {"role": "system", "content": "system init"}}


# ---------------------------------------------------------------------------
# _extract_last_user_prompt
# ---------------------------------------------------------------------------

class TestExtractLastUserPrompt:
    def test_returns_last_real_prompt(self, tmp_path):
        path = _write_transcript(tmp_path, [
            _user_entry("First prompt that is long enough to capture"),
            _assistant_entry(),
            _user_entry("Second prompt that should be the one we capture"),
            _assistant_entry(),
        ])
        result = capture_stop._extract_last_user_prompt(path)
        assert result == "Second prompt that should be the one we capture"

    def test_skips_meta_messages(self, tmp_path):
        path = _write_transcript(tmp_path, [
            _user_entry("Real prompt that is definitely long enough"),
            _user_entry("<local-command>some system stuff</local-command>"),
            _user_entry("Meta message that looks real enough", is_meta=True),
        ])
        result = capture_stop._extract_last_user_prompt(path)
        assert result == "Real prompt that is definitely long enough"

    def test_skips_xml_content(self, tmp_path):
        path = _write_transcript(tmp_path, [
            _user_entry("Actual prompt from a real human user"),
            _user_entry("<command-name>/help</command-name>"),
        ])
        result = capture_stop._extract_last_user_prompt(path)
        assert result == "Actual prompt from a real human user"

    def test_skips_short_messages(self, tmp_path):
        path = _write_transcript(tmp_path, [
            _user_entry("This prompt is long enough to be captured"),
            _user_entry("yes"),  # too short
        ])
        result = capture_stop._extract_last_user_prompt(path)
        assert result == "This prompt is long enough to be captured"

    def test_handles_content_blocks(self, tmp_path):
        entry = {
            "type": "user",
            "message": {
                "role": "user",
                "content": [
                    {"type": "text", "text": "First paragraph of the prompt."},
                    {"type": "text", "text": "Second paragraph continues here."},
                ],
            },
        }
        path = _write_transcript(tmp_path, [entry])
        result = capture_stop._extract_last_user_prompt(path)
        assert "First paragraph" in result
        assert "Second paragraph" in result

    def test_empty_transcript(self, tmp_path):
        path = _write_transcript(tmp_path, [])
        result = capture_stop._extract_last_user_prompt(path)
        assert result == ""

    def test_missing_file(self):
        result = capture_stop._extract_last_user_prompt("/nonexistent/path.jsonl")
        assert result == ""

    def test_empty_path(self):
        result = capture_stop._extract_last_user_prompt("")
        assert result == ""


# ---------------------------------------------------------------------------
# _infer_project
# ---------------------------------------------------------------------------

class TestInferProject:
    def test_empty_cwd(self):
        assert capture_stop._infer_project("") == ""

    def test_unknown_path(self):
        assert capture_stop._infer_project("C:\\Users\\antoi\\random") == ""

    def test_mapped_path(self):
        with mock.patch.dict(capture_stop._PROJECT_PATH_MAP, {
            "C:\\Users\\antoi\\gigabit": "p04-gigabit",
        }):
            result = capture_stop._infer_project("C:\\Users\\antoi\\gigabit\\src")
            assert result == "p04-gigabit"


# ---------------------------------------------------------------------------
# _capture (integration-style, mocking HTTP)
# ---------------------------------------------------------------------------

class TestCapture:
    def _hook_input(self, *, transcript_path: str = "", **overrides) -> str:
        data = {
            "session_id": "test-session-123",
            "transcript_path": transcript_path,
            "cwd": "C:\\Users\\antoi\\ATOCore",
            "permission_mode": "default",
            "hook_event_name": "Stop",
            "last_assistant_message": "Here is the answer to your question about the code.",
            "turn_number": 3,
        }
        data.update(overrides)
        return json.dumps(data)

    @mock.patch("capture_stop.urllib.request.urlopen")
    def test_posts_to_atocore(self, mock_urlopen, tmp_path):
        transcript = _write_transcript(tmp_path, [
            _user_entry("Please explain how the backup system works in detail"),
            _assistant_entry(),
        ])
        mock_resp = mock.MagicMock()
        mock_resp.read.return_value = json.dumps({"id": "int-001", "status": "recorded"}).encode()
        mock_urlopen.return_value = mock_resp

        with mock.patch("sys.stdin", StringIO(self._hook_input(transcript_path=transcript))):
            capture_stop._capture()

        mock_urlopen.assert_called_once()
        req = mock_urlopen.call_args[0][0]
        body = json.loads(req.data.decode())
        assert body["prompt"] == "Please explain how the backup system works in detail"
        assert body["client"] == "claude-code"
        assert body["session_id"] == "test-session-123"
        assert body["reinforce"] is True

    @mock.patch("capture_stop.urllib.request.urlopen")
    def test_skips_when_disabled(self, mock_urlopen, tmp_path):
        transcript = _write_transcript(tmp_path, [
            _user_entry("A prompt that would normally be captured"),
        ])
        with mock.patch.dict(os.environ, {"ATOCORE_CAPTURE_DISABLED": "1"}):
            with mock.patch("sys.stdin", StringIO(self._hook_input(transcript_path=transcript))):
                capture_stop._capture()
        mock_urlopen.assert_not_called()

    @mock.patch("capture_stop.urllib.request.urlopen")
    def test_skips_short_prompt(self, mock_urlopen, tmp_path):
        transcript = _write_transcript(tmp_path, [
            _user_entry("yes"),
        ])
        with mock.patch("sys.stdin", StringIO(self._hook_input(transcript_path=transcript))):
            capture_stop._capture()
        mock_urlopen.assert_not_called()

    @mock.patch("capture_stop.urllib.request.urlopen")
    def test_truncates_long_response(self, mock_urlopen, tmp_path):
        transcript = _write_transcript(tmp_path, [
            _user_entry("Tell me everything about the entire codebase architecture"),
        ])
        long_response = "x" * 60_000
        mock_resp = mock.MagicMock()
        mock_resp.read.return_value = json.dumps({"id": "int-002"}).encode()
        mock_urlopen.return_value = mock_resp

        with mock.patch("sys.stdin", StringIO(
            self._hook_input(transcript_path=transcript, last_assistant_message=long_response)
        )):
            capture_stop._capture()

        req = mock_urlopen.call_args[0][0]
        body = json.loads(req.data.decode())
        assert len(body["response"]) <= capture_stop.MAX_RESPONSE_LENGTH + 20
        assert body["response"].endswith("[truncated]")

    def test_main_never_raises(self):
        """main() must always exit 0, even on garbage input."""
        with mock.patch("sys.stdin", StringIO("not json at all")):
            # Should not raise
            capture_stop.main()

    @mock.patch("capture_stop.urllib.request.urlopen")
    def test_uses_atocore_url_env(self, mock_urlopen, tmp_path):
        transcript = _write_transcript(tmp_path, [
            _user_entry("Please help me with this particular problem in the code"),
        ])
        mock_resp = mock.MagicMock()
        mock_resp.read.return_value = json.dumps({"id": "int-003"}).encode()
        mock_urlopen.return_value = mock_resp

        with mock.patch.dict(os.environ, {"ATOCORE_URL": "http://localhost:9999"}):
            # Re-read the env var
            with mock.patch.object(capture_stop, "ATOCORE_URL", "http://localhost:9999"):
                with mock.patch("sys.stdin", StringIO(self._hook_input(transcript_path=transcript))):
                    capture_stop._capture()

        req = mock_urlopen.call_args[0][0]
        assert req.full_url == "http://localhost:9999/interactions"