import json
import tempfile
import unittest
from pathlib import Path

from scripts.generate_questions import build_questions, write_metadata_template
from scripts.verify_assets import (
    check_embedding_cache,
    check_metadata_cache,
    check_questions,
    sha256_file,
)


class ReleaseScriptTests(unittest.TestCase):
    def test_generate_questions_from_image_directory(self):
        with tempfile.TemporaryDirectory() as tmpdir:
            root = Path(tmpdir)
            images = root / "images"
            images.mkdir()
            (images / "123_4.jpg").write_bytes(b"fake")
            (images / "123_5.png").write_bytes(b"fake")
            (images / "123_10.png").write_bytes(b"fake")
            (images / "notes.txt").write_text("ignored", encoding="utf-8")

            questions = build_questions(images, "Prompt")
            metadata_template = root / "metadata.json"
            write_metadata_template(metadata_template, questions)

            metadata = json.loads(metadata_template.read_text(encoding="utf-8"))

        self.assertEqual([record["image_id"] for record in questions], [123004, 123005, 123010])
        self.assertEqual(questions[0]["text"], "Prompt")
        self.assertEqual(sorted(metadata), ["123"])

    def test_recursive_question_generation_uses_basename_for_app_id(self):
        with tempfile.TemporaryDirectory() as tmpdir:
            root = Path(tmpdir)
            images = root / "images"
            nested = images / "nested"
            nested.mkdir(parents=True)
            (nested / "123_4.jpg").write_bytes(b"fake")

            questions = build_questions(images, "Prompt", recursive=True)
            metadata_template = root / "metadata.json"
            write_metadata_template(metadata_template, questions)
            metadata = json.loads(metadata_template.read_text(encoding="utf-8"))

        self.assertEqual(questions[0]["image"], "nested/123_4.jpg")
        self.assertEqual(sorted(metadata), ["123"])

    def test_verify_questions_and_metadata_cache(self):
        with tempfile.TemporaryDirectory() as tmpdir:
            root = Path(tmpdir)
            images = root / "images"
            images.mkdir()
            (images / "123_4.jpg").write_bytes(b"fake")
            questions = root / "questions.jsonl"
            questions.write_text(
                json.dumps(
                    {
                        "question_id": 0,
                        "image": "123_4.jpg",
                        "image_id": 123004,
                        "text": "Prompt",
                    }
                )
                + "\n",
                encoding="utf-8",
            )
            metadata = root / "metadata.json"
            metadata.write_text(
                json.dumps(
                    {
                        "123": {
                            "app_name": "Test VR",
                            "app_description": "Description.",
                        }
                    }
                ),
                encoding="utf-8",
            )

            report = check_questions(questions, images)
            metadata_report = check_metadata_cache(metadata, report["app_ids"])

        self.assertEqual(report["questions"], 1)
        self.assertEqual(metadata_report["covered_app_ids"], 1)

    def test_verify_metadata_cache_rejects_duplicates_and_missing_fields(self):
        with tempfile.TemporaryDirectory() as tmpdir:
            root = Path(tmpdir)
            duplicate = root / "duplicate.jsonl"
            duplicate.write_text(
                "\n".join(
                    [
                        json.dumps(
                            {
                                "app_id": 123,
                                "app_name": "First",
                                "app_description": "Description.",
                            }
                        ),
                        json.dumps(
                            {
                                "app_id": "123",
                                "app_name": "Second",
                                "app_description": "Description.",
                            }
                        ),
                    ]
                )
                + "\n",
                encoding="utf-8",
            )
            missing_field = root / "missing_field.json"
            missing_field.write_text(
                json.dumps({"123": {"app_name": "Test VR"}}),
                encoding="utf-8",
            )

            with self.assertRaises(ValueError):
                check_metadata_cache(duplicate, ["123"])
            with self.assertRaises(ValueError):
                check_metadata_cache(missing_field, ["123"])

    def test_verify_external_embedding_cache_against_manifest(self):
        with tempfile.TemporaryDirectory() as tmpdir:
            root = Path(tmpdir)
            cache = root / "embedding_dict.json"
            cache.write_bytes(b"frozen-cache")
            manifest = root / "cache_manifest.json"
            manifest.write_text(
                json.dumps(
                    {
                        "artifact": "embedding_dict.json",
                        "size_bytes": cache.stat().st_size,
                        "sha256": sha256_file(cache),
                        "entry_count": 1,
                        "embedding_dimension": 2,
                    }
                ),
                encoding="utf-8",
            )

            report = check_embedding_cache(cache, manifest)

        self.assertEqual(report["entry_count"], 1)
        self.assertEqual(report["embedding_dimension"], 2)


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