"""Round-trip + validation tests for the Solution Pattern 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.curate.schema import (  # noqa: E402
    Provenance,
    Resolution,
    Scope,
    SolutionPattern,
)


def _sample() -> SolutionPattern:
    src = "success:clean_pass:outcome"
    return SolutionPattern(
        id=SolutionPattern.make_id(src),
        name="Run tests before declaring success",
        version="1.0.0",
        polarity="success",
        problem="Sessions that run tests and finish with no retries resolve cheaply.",
        resolutions=[Resolution(summary="Always run the suite", steps=["edit", "test", "commit"])],
        scope=Scope(flavors=["claude", "grok"]),
        provenance=Provenance(source_key=src, evidence={"frequency": 18, "cross_flavor": True}),
        rendering_hints={"claude": {"target": "CLAUDE.md"}, "codex": {"target": "AGENTS.md"}},
        status="approved",
        distribution_ready=True,
    )


def test_round_trip_is_lossless():
    p = _sample()
    again = SolutionPattern.from_json(p.to_json())
    assert again.to_dict() == p.to_dict()
    assert again.resolutions[0].steps == ["edit", "test", "commit"]
    assert again.scope.flavors == ["claude", "grok"]
    assert again.provenance.evidence["cross_flavor"] is True


def test_serialization_is_deterministic():
    p = _sample()
    assert p.to_json() == p.to_json()
    assert SolutionPattern.from_json(p.to_json()).to_json() == p.to_json()


def test_make_id_is_stable_and_slugged():
    assert SolutionPattern.make_id("success:clean_pass:outcome") == "sp-success-clean_pass-outcome"
    # same source key -> same id regardless of later wording
    assert SolutionPattern.make_id("problem:abandoned:outcome") == SolutionPattern.make_id(
        "problem:abandoned:outcome"
    )


def test_bump_version():
    assert SolutionPattern.bump_version("1.0.0") == "1.0.1"
    assert SolutionPattern.bump_version("1.2.3", "minor") == "1.3.0"
    assert SolutionPattern.bump_version("1.2.3", "major") == "2.0.0"


def test_rejects_unknown_polarity():
    with pytest.raises(ValueError):
        SolutionPattern(id="x", name="n", version="1.0.0", polarity="meh", problem="p")


def test_rejects_unknown_status():
    with pytest.raises(ValueError):
        SolutionPattern(id="x", name="n", version="1.0.0", polarity="problem",
                        problem="p", status="bogus")


def test_rejects_unknown_flavor_in_hints_and_scope():
    with pytest.raises(ValueError):
        SolutionPattern(id="x", name="n", version="1.0.0", polarity="problem",
                        problem="p", rendering_hints={"gpt": {}})
    with pytest.raises(ValueError):
        Scope(flavors=["gpt"])