import hashlib
import json
from pathlib import Path

BENCHMARK_NAME = "TurkishDecisionBenchmark"
BENCHMARK_VERSION = "0.2"

ROOT = Path(__file__).resolve().parent.parent
DATASET_DIR = ROOT / "dataset"
RESULTS_DIR = ROOT / "results"

# Per version: task file and one JSONL per split. "hidden" is git-ignored.
VERSIONS = {
    "0.2": {
        "tasks": DATASET_DIR / "v0.2" / "tasks.json",
        "splits": {
            "public": DATASET_DIR / "v0.2" / "public.jsonl",
            "hidden": DATASET_DIR / "v0.2" / "hidden.jsonl",
        },
    },
}

DATASET_PATH = VERSIONS[BENCHMARK_VERSION]["splits"]["public"]
TASKS_PATH = VERSIONS[BENCHMARK_VERSION]["tasks"]


def version_paths(version, split="public"):
    spec = VERSIONS[version]
    if split not in spec["splits"]:
        raise ValueError(f"v{version} has no split {split!r}; choose from {list(spec['splits'])}")
    return spec["splits"][split], spec["tasks"]


def results_dir(version):
    return RESULTS_DIR / f"v{version}"


def load_tasks(path=TASKS_PATH):
    return json.loads(Path(path).read_text(encoding="utf-8"))


def load_cases(path=DATASET_PATH):
    path = Path(path)
    if not path.exists():
        return []
    with path.open("r", encoding="utf-8") as f:
        return [json.loads(line) for line in f if line.strip()]


def sha256_file(path):
    return hashlib.sha256(Path(path).read_bytes()).hexdigest()


def display_path(path):
    path = Path(path).resolve()
    try:
        return str(path.relative_to(ROOT))
    except ValueError:
        return str(path)