"""A destination two systems declare with two hashes ships one file.

RetroDECK declares bios/disk.rom for pc88 (the N88SUB ROM) and for coco (the
CoCo disk ROM), and bios/cdibios.zip for two components with two md5. The
pack holds one file per path, but verify resolved each declaration to its own
file and counted both OK, so three green tools described a pack whose
frontend hashes bios/disk.rom for xroar and finds the PC-88 ROM.
"""

from __future__ import annotations

import hashlib
import os
import sys
import tempfile
import unittest
from pathlib import Path

REPO_ROOT = Path(__file__).resolve().parent.parent
sys.path.insert(0, str(REPO_ROOT / "scripts"))

import common  # noqa: E402
import generate_db  # noqa: E402
from verify import verify_platform  # noqa: E402


class TwinDeclarations(unittest.TestCase):
    def setUp(self):
        self._tmp = tempfile.TemporaryDirectory()
        self._cwd = os.getcwd()
        os.chdir(self._tmp.name)
        files, self.md5 = {}, {}
        for rel, payload in (
            ("bios/NEC/PC-98/N88SUB.ROM", b"pc88 disk rom"),
            ("bios/Tandy/CoCo/disk.rom", b"coco disk rom"),
        ):
            path = Path(rel)
            path.parent.mkdir(parents=True, exist_ok=True)
            path.write_bytes(payload)
            sha1 = hashlib.sha1(payload).hexdigest()
            self.md5[rel] = hashlib.md5(payload).hexdigest()
            files[sha1] = {
                "path": rel, "name": path.name, "size": len(payload), "sha1": sha1,
                "md5": self.md5[rel], "sha256": hashlib.sha256(payload).hexdigest(),
                "crc32": "00000001",
            }
        self.db = {"files": files, "indexes": generate_db.build_indexes(files, {})}
        self.emulators = Path(self._tmp.name) / "emulators"
        self.emulators.mkdir()
        common._emulator_profiles_cache.clear()

    def tearDown(self):
        common._emulator_profiles_cache.clear()
        os.chdir(self._cwd)
        self._tmp.cleanup()

    def test_the_losing_declaration_is_scored_against_the_shipped_file(self):
        config = {
            "platform": "Twins",
            "verification_mode": "md5",
            "base_destination": "bios",
            "cores": [],
            "systems": {
                "pc88": {"files": [{"name": "N88SUB.ROM", "destination": "disk.rom",
                                    "md5": self.md5["bios/NEC/PC-98/N88SUB.ROM"]}]},
                "coco": {"files": [{"name": "disk.rom", "destination": "disk.rom",
                                    "md5": self.md5["bios/Tandy/CoCo/disk.rom"]}]},
            },
        }
        report = verify_platform(
            config, self.db, str(self.emulators), {}
        )
        by_system = {d["system"]: d for d in report["details"] if d["name"] in ("N88SUB.ROM", "disk.rom")}
        statuses = sorted(d["status"] for d in by_system.values())
        self.assertEqual(statuses.count("ok"), 1, by_system)
        loser = next(d for d in by_system.values() if d["status"] != "ok")
        self.assertIn("is not met at the path", loser.get("discrepancy", ""))
        # The path counts once, for the file it ships. The loser is a detail.
        self.assertEqual(report["status_counts"], {"ok": 1})


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