#!/usr/bin/env python3
"""Check the four-task SnD Floaters suite layout and canonical assets."""

from __future__ import annotations

import json
import subprocess
import tomllib
from pathlib import Path


SHARED = Path(__file__).resolve().parents[1]
SUITE = SHARED.parent
ROOT = SUITE.parent

TASKS = [
    ("snd-floaters-01-vessel-recon", "01-vessel-recon"),
    ("snd-floaters-02-cargo-reconciliation", "02-cargo-reconciliation"),
    ("snd-floaters-03-schedule-update", "03-schedule-update"),
    ("snd-floaters-04-full-update", "04-full-update"),
]


def fail(message: str) -> None:
    raise SystemExit(message)


def tracked_files() -> list[str]:
    result = subprocess.run(
        ["git", "ls-files"],
        cwd=ROOT,
        check=True,
        capture_output=True,
        text=True,
    )
    return [line for line in result.stdout.splitlines() if line]


def main() -> None:
    for retired in (ROOT / "harbor", ROOT / "snd-floaters-eval"):
        if retired.exists():
            fail(f"retired directory still exists: {retired.relative_to(ROOT)}")

    registry = json.loads((ROOT / "registry.json").read_text())
    entries = [entry for entry in registry if entry.get("name") == "snd-floaters"]
    if len(entries) != 1:
        fail("registry.json must contain exactly one snd-floaters dataset")
    expected_registry_tasks = [
        {"name": name, "path": f"snd-floaters/{directory}"}
        for name, directory in TASKS
    ]
    if entries[0].get("tasks") != expected_registry_tasks:
        fail("snd-floaters must list the four original tasks in order")

    for expected_name, directory in TASKS:
        task_dir = SUITE / directory
        for required in ("instruction.md", "task.toml", "tests/test.sh", "solution/solve.sh"):
            if not (task_dir / required).is_file():
                fail(f"missing {directory}/{required}")
        if not (task_dir / "environment").is_dir():
            fail(f"missing {directory}/environment/")
        config = tomllib.loads((task_dir / "task.toml").read_text())
        if config.get("task", {}).get("name") != f"qrlow/{expected_name}":
            fail(f"unexpected task name in {directory}/task.toml")

    tracked = tracked_files()
    expected_by_name = {
        "European_Gas_SnD_Start.xlsx": [
            "snd-floaters/01-vessel-recon/environment/candidate/European_Gas_SnD_Start.xlsx",
            "snd-floaters/02-cargo-reconciliation/environment/candidate/European_Gas_SnD_Start.xlsx",
            "snd-floaters/03-schedule-update/environment/candidate/European_Gas_SnD_Start.xlsx",
            "snd-floaters/04-full-update/environment/candidate/European_Gas_SnD_Start.xlsx",
            "snd-floaters/shared/candidate/European_Gas_SnD_Start.xlsx",
        ],
        "score_submission.py": [
            "snd-floaters/03-schedule-update/tests/score_submission.py",
            "snd-floaters/04-full-update/tests/score_submission.py",
            "snd-floaters/shared/scripts/score_submission.py",
        ],
        "answer_key.json": [
            "snd-floaters/03-schedule-update/tests/answer_key.json",
            "snd-floaters/04-full-update/tests/answer_key.json",
            "snd-floaters/shared/private/answer_key.json",
        ],
        "European_Gas_SnD_Answer.xlsx": [
            "snd-floaters/03-schedule-update/solution/European_Gas_SnD_Answer.xlsx",
            "snd-floaters/04-full-update/solution/European_Gas_SnD_Answer.xlsx",
            "snd-floaters/shared/private/European_Gas_SnD_Answer.xlsx",
        ],
    }
    suite_files = [path for path in tracked if path.startswith("snd-floaters/")]
    for basename, expected in expected_by_name.items():
        found = sorted(path for path in suite_files if Path(path).name == basename)
        if found != sorted(expected):
            fail(f"unexpected {basename} files: {found}")

    generated_download = (
        "snd-floaters/shared/portal/public/downloads/European_Gas_SnD_Start.xlsx"
    )
    if generated_download in tracked:
        fail("the generated portal workbook download must not be tracked")

    print("SnD Floaters structure OK: one suite with four original tasks")


if __name__ == "__main__":
    main()