"""Verify `hermes -c` picks the session the user most recently used."""

from __future__ import annotations

from hermes_cli.main import _resolve_last_session


class _FakeDB:
    def __init__(self, rows):
        self._rows = rows
        self.closed = False

    def search_sessions(self, source=None, limit=20, **_kw):
        rows = [r for r in self._rows if r.get("source") == source] if source else list(self._rows)
        rows.sort(
            key=lambda r: float(r.get("last_active") or r.get("started_at") or 0),
            reverse=True,
        )
        return rows[:limit]

    def close(self):
        self.closed = True




def test_search_sessions_exposes_last_active_column(tmp_path, monkeypatch):
    # End-to-end: SessionDB must surface last_active and order by MRU.
    monkeypatch.setenv("HERMES_HOME", str(tmp_path))
    monkeypatch.setattr("pathlib.Path.home", lambda: tmp_path)

    import hermes_state

    from pathlib import Path

    db = hermes_state.SessionDB(db_path=Path(tmp_path / "state.db"))
    try:
        db.create_session("s_started_later", source="cli")
        db.create_session("s_active_later", source="cli")
        # Force started_at ordering so the test is deterministic regardless
        # of how quickly the two inserts land.
        with db._lock:
            db._conn.execute("UPDATE sessions SET started_at=? WHERE id=?", (2000.0, "s_started_later"))
            db._conn.execute("UPDATE sessions SET started_at=? WHERE id=?", (1000.0, "s_active_later"))
            db._conn.commit()

        db.append_message("s_active_later", role="user", content="hi")
        with db._lock:
            db._conn.execute(
                "UPDATE messages SET timestamp=? WHERE session_id=?",
                (3000.0, "s_active_later"),
            )
            db._conn.commit()

        rows = db.search_sessions(source="cli", limit=5)
        ids = {r["id"]: r.get("last_active") for r in rows}

        assert ids["s_started_later"] == 2000.0
        assert ids["s_active_later"] == 3000.0
        assert rows[0]["id"] == "s_active_later"
    finally:
        db.close()




# ---------------------------------------------------------------------------
# cwd-scoped resume: -c prefers the last session in the current workspace.
# ---------------------------------------------------------------------------


class _WorkspaceAwareDB:
    """Fake SessionDB whose ``search_sessions`` honors ``workspace_key`` the
    same way the real ``_workspace_key_clause`` does: a row matches the key
    when its ``git_repo_root`` equals it, or (no repo root recorded) when its
    ``cwd`` is at or under it."""

    def __init__(self, rows):
        self._rows = rows
        self.closed = False

    def search_sessions(self, source=None, limit=20, workspace_key=None, **_kw):
        rows = [r for r in self._rows if r.get("source") == source] if source else list(self._rows)
        if workspace_key:
            key = workspace_key.rstrip("/")
            def _in_ws(r):
                grr = (r.get("git_repo_root") or "").rstrip("/")
                if grr:
                    return grr == key
                cwd = (r.get("cwd") or "").rstrip("/")
                return cwd == key or cwd.startswith(key + "/")
            rows = [r for r in rows if _in_ws(r)]
        rows.sort(
            key=lambda r: float(r.get("last_active") or r.get("started_at") or 0),
            reverse=True,
        )
        return rows[:limit]

    def close(self):
        self.closed = True


def test_resolve_last_session_real_db_prefers_workspace(monkeypatch, tmp_path):
    # End-to-end through the real SessionDB + _resolve_last_session: -c from
    # repo A picks repo A's session even though repo B is globally newer.
    monkeypatch.setenv("HERMES_HOME", str(tmp_path))
    monkeypatch.setattr("pathlib.Path.home", lambda: tmp_path)

    import hermes_state
    from pathlib import Path

    repo_a = tmp_path / "repo-a"
    repo_a.mkdir()
    state_db = Path(tmp_path / "state.db")
    real_db = hermes_state.SessionDB
    db = real_db(db_path=state_db)
    try:
        db.create_session("repo_a", source="cli", cwd=str(repo_a), git_repo_root=str(repo_a))
        db.create_session("repo_b", source="cli", cwd="/other/repo-b", git_repo_root="/other/repo-b")
        with db._lock:
            db._conn.execute("UPDATE sessions SET started_at=? WHERE id=?", (100.0, "repo_a"))
            db._conn.execute("UPDATE sessions SET started_at=? WHERE id=?", (9000.0, "repo_b"))
            db._conn.commit()
    finally:
        db.close()

    monkeypatch.chdir(repo_a)
    monkeypatch.setattr(
        "hermes_cli.main.subprocess.run",
        lambda cmd, **kw: __import__("subprocess").CompletedProcess(
            cmd, 0, stdout=str(repo_a), stderr=""
        ),
    )
    monkeypatch.setattr("hermes_state.SessionDB", lambda: real_db(db_path=state_db))
    assert _resolve_last_session("cli") == "repo_a"