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#!/usr/bin/env python
from __future__ import annotations

import argparse
import os
import sys
from pathlib import Path

PROJECT_ROOT = Path(__file__).resolve().parents[1]
if str(PROJECT_ROOT) not in sys.path:
    sys.path.insert(0, str(PROJECT_ROOT))

from dovla_cil.tasks.predicates import SUPPORTED_PREDICATES  # noqa: E402
from dovla_cil.utils.io import write_jsonl
from dovla_cil.utils.seeding import seed_everything
from dovla_cil.vlm.client import VLMClient
from dovla_cil.vlm.task_generator import (
    TaskGenerationRequest,
    TaskGenerator,
    default_task_generation_request,
)


def main(argv: list[str] | None = None) -> int:
    parser = argparse.ArgumentParser(description="Generate VLM-assisted DoVLA-CIL task specs.")
    parser.add_argument("--num-tasks", type=int, default=8)
    parser.add_argument(
        "--families",
        nargs="*",
        default=None,
        help="Task families as space-separated or comma-separated values.",
    )
    parser.add_argument("--out", type=Path, default=Path("outputs/tasks.jsonl"))
    parser.add_argument("--mock", action="store_true", help="Use deterministic mock generation.")
    parser.add_argument("--seed", type=int, default=17)
    args = parser.parse_args(argv)

    seed_everything(args.seed)
    if args.mock:
        os.environ["OPENCLAUDE_MOCK"] = "1"

    defaults = default_task_generation_request(num_tasks=args.num_tasks)
    families = _parse_list(args.families) or defaults.families
    request = TaskGenerationRequest(
        num_tasks=args.num_tasks,
        families=families,
        object_categories=defaults.object_categories,
        relations=sorted(SUPPORTED_PREDICATES),
        constraints=[f"seed={args.seed}"],
    )
    generator = TaskGenerator(VLMClient())
    tasks = generator.generate_tasks(request)
    write_jsonl((task.to_dict() for task in tasks), args.out)
    print(f"Wrote {len(tasks)} tasks to {args.out}")
    return 0


def _parse_list(values: list[str] | None) -> list[str]:
    if not values:
        return []
    parsed: list[str] = []
    for value in values:
        parsed.extend(item.strip() for item in value.split(",") if item.strip())
    return parsed


if __name__ == "__main__":
    raise SystemExit(main())