import sys
import unittest
from pathlib import Path


MODULE_DIR = Path(__file__).resolve().parents[1]
sys.path.insert(0, str(MODULE_DIR))

import eval as purpose_eval


class CoreMLComputeUnitTests(unittest.TestCase):
    class CoreMLTools:
        class ComputeUnit:
            ALL = "all-value"
            CPU_ONLY = "cpu-value"
            CPU_AND_GPU = "gpu-value"
            CPU_AND_NE = "ne-value"

    def test_maps_cli_compute_policies(self):
        expected = {
            "all": "all-value",
            "cpu-only": "cpu-value",
            "cpu-and-gpu": "gpu-value",
            "cpu-and-ne": "ne-value",
        }
        for requested, value in expected.items():
            with self.subTest(requested=requested):
                self.assertEqual(
                    value,
                    purpose_eval._coreml_compute_unit(self.CoreMLTools, requested),
                )


class TierDriftTests(unittest.TestCase):
    def test_current_routing_matrix_bounds_every_label_pair(self):
        records = [{"prompt": f"prompt {index}"} for index in range(8 * 8)]
        actual = []
        predicted = []
        for expected in range(8):
            for got in range(8):
                actual.append(expected)
                predicted.append(got)
        report = purpose_eval.routing_tier_drift(records, actual, predicted)
        self.assertTrue(report["passed"])
        self.assertLessEqual(report["maximumTierDrift"], 1)


class PredictionAgreementTests(unittest.TestCase):
    def test_reports_accuracy_transitions_and_scorable_agreement(self):
        records = [
            {"prompt": "one", "slice": "core"},
            {"prompt": "two", "slice": "boundary"},
            {"prompt": "three", "slice": "vague-eval"},
            {"prompt": "four", "slice": "core"},
        ]
        report = purpose_eval.prediction_agreement(
            records,
            actual=[0, 1, 2, 3],
            reference=[0, 0, 3, 4],
            candidate=[1, 1, 4, 5],
        )
        self.assertEqual(0.0, report["labelAgreement"])
        self.assertEqual(0.0, report["scoredLabelAgreement"])
        self.assertEqual(
            {
                "correctToIncorrect": 1,
                "differentIncorrectLabel": 2,
                "incorrectToCorrect": 1,
            },
            report["transitionCounts"],
        )
        self.assertEqual(2, report["bySlice"]["core"]["records"])
        self.assertEqual(4, len(report["disagreements"]))


if __name__ == "__main__":
    unittest.main()