"""Tests for `tht session list --json` and `tht session show --json` (Task 7)."""
import json

import pytest
from typer.testing import CliRunner

from tht.cli.session_cmd import _list_sessions, session_app
from tht.session.store import create_session


def _make_db():
    from tht.config import DatabaseConfig

    return DatabaseConfig(
        database="testdb",
        user="testuser",
        password="testpass",  # noqa: S106
        **{"schema": "public"},
    )


# ---------------------------------------------------------------------------
# Unit: _list_sessions helper
# ---------------------------------------------------------------------------


def test_list_sessions_returns_all_created(tmp_path):
    db = _make_db()
    m1 = create_session("prima domanda", db, tmp_path)
    m2 = create_session("seconda domanda", db, tmp_path)
    rows = _list_sessions(tmp_path)
    ids = [r["id"] for r in rows]
    assert m1.id in ids
    assert m2.id in ids


def test_list_sessions_required_keys(tmp_path):
    db = _make_db()
    create_session("qualsiasi domanda", db, tmp_path)
    rows = _list_sessions(tmp_path)
    assert len(rows) >= 1
    required = {"id", "status", "question", "summary", "created_at", "updated_at", "author"}
    assert required.issubset(rows[0].keys())


def test_list_sessions_sorted_desc(tmp_path):
    db = _make_db()
    create_session("prima", db, tmp_path)
    create_session("seconda", db, tmp_path)
    rows = _list_sessions(tmp_path)
    dates = [r["created_at"] for r in rows]
    assert dates == sorted(dates, reverse=True)


def test_list_sessions_empty_dir(tmp_path):
    rows = _list_sessions(tmp_path)
    assert rows == []


# ---------------------------------------------------------------------------
# CLI: tht session list --json
# ---------------------------------------------------------------------------


def test_cli_list_json_valid(tmp_path, monkeypatch):
    db = _make_db()
    m = create_session("test question", db, tmp_path)

    # Patch _load_config_or_exit so we don't need a real config file
    from tht.cli import session_cmd

    class FakePaths:
        sessions = tmp_path

    class FakeCfg:
        paths = FakePaths()

    monkeypatch.setattr(session_cmd, "_load_config_or_exit", lambda _: FakeCfg())

    runner = CliRunner()
    result = runner.invoke(session_app, ["list", "--json"])
    assert result.exit_code == 0, result.output
    rows = json.loads(result.output)
    assert isinstance(rows, list)
    ids = [r["id"] for r in rows]
    assert m.id in ids


def test_cli_list_human_no_json_noise(tmp_path, monkeypatch):
    """Human mode must not emit JSON."""
    db = _make_db()
    create_session("human question", db, tmp_path)

    from tht.cli import session_cmd

    class FakePaths:
        sessions = tmp_path

    class FakeCfg:
        paths = FakePaths()

    monkeypatch.setattr(session_cmd, "_load_config_or_exit", lambda _: FakeCfg())

    runner = CliRunner()
    result = runner.invoke(session_app, ["list"])
    assert result.exit_code == 0
    # Must not be parseable as JSON array
    with pytest.raises(json.JSONDecodeError):
        json.loads(result.output)


# ---------------------------------------------------------------------------
# CLI: tht session show --json
# ---------------------------------------------------------------------------


def test_cli_show_json_valid(tmp_path, monkeypatch):
    db = _make_db()
    m = create_session("domanda show json", db, tmp_path)

    from tht.cli import session_cmd

    class FakePaths:
        sessions = tmp_path

    class FakeCfg:
        paths = FakePaths()
        database = db

    monkeypatch.setattr(session_cmd, "_load_config_or_exit", lambda _: FakeCfg())

    runner = CliRunner()
    result = runner.invoke(session_app, ["show", m.id, "--json"])
    assert result.exit_code == 0, result.output
    data = json.loads(result.output)
    assert data["id"] == m.id
    assert "phase" in data
    assert "has_schema_linking" in data
    # Pin by_alias=True: the alias-sensitive field must serialize as "schema", not "db_schema".
    assert "schema" in data
    assert "db_schema" not in data


def test_cli_show_json_stdout_pristine(tmp_path, monkeypatch):
    """--json must produce only valid JSON on stdout (no ANSI color codes or extra lines)."""
    db = _make_db()
    m = create_session("pristine stdout test", db, tmp_path)

    from tht.cli import session_cmd

    class FakePaths:
        sessions = tmp_path

    class FakeCfg:
        paths = FakePaths()
        database = db

    monkeypatch.setattr(session_cmd, "_load_config_or_exit", lambda _: FakeCfg())

    runner = CliRunner()
    result = runner.invoke(session_app, ["show", m.id, "--json"])
    assert result.exit_code == 0, result.output
    # stdout must parse cleanly as JSON
    data = json.loads(result.output)
    assert isinstance(data, dict)


def test_cli_retrieval_pack_emits_persisted_content(tmp_path, monkeypatch):
    db = _make_db()
    manifest = create_session("test question", db, tmp_path)
    expected = "# Retrieval pack\n\ncontenuto già pronto\n"
    (tmp_path / manifest.id / "retrieval_pack.md").write_text(expected)

    from tht.cli import session_cmd

    class FakePaths:
        sessions = tmp_path

    class FakeCfg:
        paths = FakePaths()

    monkeypatch.setattr(session_cmd, "_load_config_or_exit", lambda _: FakeCfg())
    result = CliRunner().invoke(session_app, ["retrieval-pack", manifest.id])

    assert result.exit_code == 0, result.output
    assert result.output == expected


def test_cli_retrieval_pack_missing_is_clear_error(tmp_path, monkeypatch):
    db = _make_db()
    manifest = create_session("test question", db, tmp_path)

    from tht.cli import session_cmd

    class FakePaths:
        sessions = tmp_path

    class FakeCfg:
        paths = FakePaths()

    monkeypatch.setattr(session_cmd, "_load_config_or_exit", lambda _: FakeCfg())
    result = CliRunner().invoke(session_app, ["retrieval-pack", manifest.id])

    assert result.exit_code == 1
    assert "retrieval pack non disponibile" in result.output