import json, sys

def convert(src, dst):
    with open(src, encoding="utf-8") as f, open(dst, "w", encoding="utf-8") as g:
        for line in f:
            rec = json.loads(line)
            conv = rec["conversations"]
            human = [c["value"] for c in conv if c["from"] == "human"]
            gpt = [c["value"] for c in conv if c["from"] == "gpt"]
            if not human or not gpt:
                continue
            out = {"instruction": human[0],
                   "input": "\n\n".join(human[1:]) if len(human) > 1 else "",
                   "output": "\n\n".join(gpt)}
            g.write(json.dumps(out, ensure_ascii=False) + "\n")

if __name__ == "__main__":
    for split in ("train", "val", "test"):
        convert(f"data/{split}.jsonl", f"data/{split}_alpaca.jsonl")
    print("done")