"""Round-trip + validation tests for the normalized schema (T01)."""

import os
import sys

import pytest

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

from session_memory.core.schema import (  # noqa: E402
    SCHEMA_VERSION,
    Cost,
    Session,
    SessionEvent,
)


def _sample_session() -> Session:
    return Session(
        session_uid=Session.make_uid("claude", "abc-123"),
        flavor="claude",
        native_session_id="abc-123",
        repo="agentic-resources",
        domain="helix_forge",
        cwd="/home/worsch/agentic-resources",
        git_branch="main",
        model="claude-opus-4-8",
        started_at="2026-06-06T10:00:00Z",
        ended_at="2026-06-06T10:15:00Z",
        outcome="success",
        cost=Cost(input_tokens=100, output_tokens=50, turns=3, retries=1),
        task_ref="AGENTIC-WP-0002-T01",
        source_path="~/.claude/projects/x/abc-123.jsonl",
        source_bytes=2048,
        ingested_at="2026-06-06T10:16:00Z",
    )


def test_session_round_trip():
    s = _sample_session()
    restored = Session.from_json(s.to_json())
    assert restored == s
    assert restored.cost == s.cost
    assert restored.schema_version == SCHEMA_VERSION


def test_session_uid_helper_and_prefix_enforced():
    assert Session.make_uid("grok", "z9") == "grok:z9"
    with pytest.raises(ValueError):
        Session(session_uid="codex:wrong", flavor="claude", native_session_id="wrong")


def test_unknown_flavor_and_outcome_rejected():
    with pytest.raises(ValueError):
        Session(session_uid="x:1", flavor="x", native_session_id="1")
    with pytest.raises(ValueError):
        Session(
            session_uid="claude:1",
            flavor="claude",
            native_session_id="1",
            outcome="bogus",
        )


def test_is_evictable_requires_analyzed_not_evicted():
    s = _sample_session()
    assert s.is_evictable is False  # not analyzed yet
    s.analyzed_at = "2026-06-06T10:17:00Z"
    assert s.is_evictable is True
    s.evicted_at = "2026-06-06T11:00:00Z"
    assert s.is_evictable is False  # already evicted


def test_event_round_trip_and_kind_validation():
    e = SessionEvent(
        session_uid="claude:abc-123",
        seq=4,
        parent_seq=3,
        ts="2026-06-06T10:01:00Z",
        kind="tool_call",
        role="assistant",
        tool="Bash",
        summary="ran pytest -q",
        payload_ref="blob://abc-123/4",
        tokens=12,
    )
    assert SessionEvent.from_json(e.to_json()) == e
    with pytest.raises(ValueError):
        SessionEvent(session_uid="claude:1", seq=0, kind="not_a_kind")


def test_from_dict_ignores_unknown_fields():
    d = _sample_session().to_dict()
    d["future_field"] = "ignored"
    d["cost"]["future_cost"] = 999
    restored = Session.from_dict(d)
    assert restored.repo == "agentic-resources"