import json
import sys
import tempfile
import unittest
from pathlib import Path


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

import label_nucleic_prompts as base
import label_swe_chat_prompts
from purpose_data import prompt_hash


class LabelSWEChatPromptsTests(unittest.TestCase):
    def candidate(self):
        value = {
            "schemaVersion": 1,
            "repoID": "repo",
            "userID": "user",
            "sessionID": "session",
            "sourceTurnIDs": ["one", "two"],
            "prompt": "What is making this test fail?",
            "teacherResponse": "It fails only on CI.",
        }
        value["promptHash"] = prompt_hash(value["prompt"])
        value["teacherResponseHash"] = prompt_hash(value["teacherResponse"])
        line = base.SourceLine(1, json.dumps(value), "line-hash")
        return label_swe_chat_prompts.candidates([line])[0]

    def decision(self, candidate, recoverable):
        return {
            "items": [{
                "id": candidate.id, "keep": True, "junkReason": None,
                "purpose": "debugging", "secondary": None, "mixed": False,
                "difficulty": 0.6, "slice": "boundary", "lang": "en",
                "recoverableFromFirst": recoverable,
            }]
        }

    def test_response_hash_is_checked_and_context_dependent_labels_become_vague_eval(self):
        candidate = self.candidate()
        decisions = label_swe_chat_prompts.validate_decisions(
            [candidate], self.decision(candidate, False)
        )
        self.assertEqual("vague-eval", decisions[0][1]["slice"])
        self.assertNotIn("It fails only on CI.", candidate.prompt)

    def test_candidate_rejects_context_hash_mismatch(self):
        candidate = self.candidate()
        value = json.loads(candidate.line.raw)
        value["teacherResponseHash"] = "bad"
        with self.assertRaisesRegex(ValueError, "teacherResponseHash"):
            label_swe_chat_prompts.candidates(
                [base.SourceLine(1, json.dumps(value), "line-hash")]
            )

    def test_state_never_carries_later_text(self):
        candidate = self.candidate()
        state = label_swe_chat_prompts._state(
            candidate, status="labeled", record=None, reason=None, recoverable=True
        )
        encoded = json.dumps(state)
        self.assertNotIn("It fails only on CI.", encoded)

    def test_response_sanitizer_preserves_all_prose_and_removes_code_payloads(self):
        response = (
            "I found the likely cause.\n\n"
            "```swift\nlet secret = \"not teacher context\"\n```\n\n"
            "The fix is to await the task.\n"
            "<tool_use>{\"cmd\": \"rm -rf /\"}</tool_use>\n"
            "Then rerun the focused test."
        )
        sanitized = label_swe_chat_prompts.response_for_labeling(response, 2_000)
        self.assertIn("I found the likely cause.", sanitized)
        self.assertIn("The fix is to await the task.", sanitized)
        self.assertIn("Then rerun the focused test.", sanitized)
        self.assertNotIn("let secret", sanitized)
        self.assertNotIn("rm -rf", sanitized)

    def test_response_sanitizer_refuses_to_truncate_prose(self):
        with self.assertRaisesRegex(ValueError, "rather than truncating"):
            label_swe_chat_prompts.response_for_labeling("x" * 1_001, 1_000)


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