import json
import sys

import tqdm
from pydantic import BaseModel


class Sample(BaseModel):
    code: str
    size: int
    license: str


def is_chinese_char(char):
    """Check if the char is a Chinese character."""
    return char >= "\u4e00" and char <= "\u9fff"


def is_chinese(text: str):
    """Check if the text is Chinese. We consider a text as Chinese if >20% of
    the text is Chinese characters."""
    cn_count = 0

    for char in text:
        if is_chinese_char(char):
            cn_count += 1

    return True if cn_count * 50 > len(text) else False


with open(sys.argv[1], "r") as inp:
    with open(sys.argv[2], "wb") as out:
        for line in tqdm.tqdm(inp):
            try:
                data = json.loads(line)
            except json.JSONDecodeError as e:
                print(f"Error: {e}")
                continue

            code, size, license = (
                data["code"],
                data["size"],
                data["license"],
            )

            if license not in [
                "",
                "MIT",
                "Apache-2.0",
                "CC-BY-4.0",
                "CC-BY-3.0",
                "MIT-0",
                "CC0-1.0",
                "BSD-3-Clause",
                "BSD-2-Clause",
                "BSD-Source-Code",
                "EC",
                "Unlicense",
            ]:
                continue

            if is_chinese(code):
                encoded = Sample(
                    code=code,
                    size=size,
                    license=license,
                ).model_dump_json()
                out.write(encoded.encode("utf-8") + b"\n")