"""Error-body mining into the digest (WP-0006 T01)."""

import os
import sys

sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

from session_memory.core.digest import (  # noqa: E402
    _error_fingerprint,
    _error_snippets,
    build_digest,
)
from session_memory.core.schema import SCHEMA_VERSION, Session, SessionEvent  # noqa: E402


def _ev(seq, kind, **kw):
    return SessionEvent(session_uid="claude:s", seq=seq, kind=kind, **kw)


def test_fingerprint_normalizes_paths_numbers_ids():
    a = _error_fingerprint("ModuleNotFoundError: No module named 'foo' at /home/x/a.py:42")
    b = _error_fingerprint("ModuleNotFoundError: No module named 'foo' at /srv/y/b.py:9991")
    assert a == b  # paths + line numbers stripped -> same fingerprint
    assert "<path>" in a and "<n>" in a


def test_fingerprint_uuid_and_addr():
    fp = _error_fingerprint("connection 0xDEADBEEF to 1972d1d9-fc35-4912-8126-1fe64cc51425 failed")
    assert "<addr>" in fp and "<uuid>" in fp


def test_snippets_dedup_and_count():
    blobs = {"b1": "Traceback...\nValueError: bad thing at /p/x.py:10",
             "b2": "Traceback...\nValueError: bad thing at /q/y.py:99",
             "b3": "KeyError: 'id'"}
    events = [
        _ev(0, "error", payload_ref="b1"),
        _ev(1, "error", payload_ref="b2"),       # same fingerprint as b1
        _ev(2, "error", payload_ref="b3"),
    ]
    snips = _error_snippets(events, blobs)
    assert len(snips) == 2
    top = snips[0]
    assert top["count"] == 2  # the ValueError collapsed
    assert "ValueError" in top["sample"]


def test_failed_tool_result_mined():
    blobs = {"b1": "npm ERR! something failed with non-zero exit"}
    events = [_ev(0, "tool_result", tool="Bash", payload_ref="b1")]
    snips = _error_snippets(events, blobs)
    assert len(snips) == 1
    assert snips[0]["tool"] == "Bash"


def test_clean_tool_result_not_mined():
    blobs = {"b1": "6 passed in 0.4s"}
    events = [_ev(0, "tool_result", tool="Bash", payload_ref="b1")]
    assert _error_snippets(events, blobs) == []


def test_build_digest_includes_error_snippets_and_v2():
    s = Session(session_uid="claude:s", flavor="claude", native_session_id="s", repo="r")
    events = [_ev(0, "user_msg"), _ev(1, "error", payload_ref="b1"), _ev(2, "assistant_msg")]
    d = build_digest(s, events, {"b1": "RuntimeError: kaboom at /a/b.py:3"})
    assert d["schema_version"] == SCHEMA_VERSION == 2
    assert d["error_snippets"][0]["count"] == 1
    assert "RuntimeError" in d["error_snippets"][0]["sample"]


def test_no_errors_empty_list():
    s = Session(session_uid="claude:s", flavor="claude", native_session_id="s", repo="r")
    d = build_digest(s, [_ev(0, "user_msg"), _ev(1, "assistant_msg")])
    assert d["error_snippets"] == []