#!/usr/bin/env python3
import subprocess
import os
import sqlite3


def download(url, base_dir):
    file_dir = os.path.join(base_dir, "/".join(url.split("/")[:-1]))
    if not os.path.exists(file_dir):
        os.makedirs(file_dir)
    file_path = os.path.join(base_dir, url.split("?")[0])
    # 用 curl 模拟 apt 下载文件，User-Agent 来自 Debian 12
    subprocess.run(
        [
            "curl",
            "-H",
            "User-Agent: Debian APT-HTTP/1.3 (2.6.1)",
            "-fsLo",
            file_path,
            url,
        ]
    )


def check_download(name, version, url, arch, base_dir="deb"):
    conn = sqlite3.connect(f"data/{base_dir}.db")
    cur = conn.cursor()

    res = cur.execute(
        "SELECT version, url FROM " + arch + " WHERE name = ?", (name,)
    ).fetchall()
    if len(res):
        local_version = res[0][0]
        local_url = res[0][1]
        print(name + ": " + local_version)
        if local_version != version:
            print("└  Update: " + local_version + " -> " + version)
            download(url, base_dir)
            # wirte to db
            cur.execute(
                "UPDATE " + arch + " SET version = ?, url = ? WHERE name = ?",
                (version, url, name),
            )
            # remove old version
            if local_url != url: # 针对固定下载链接
                old_file_path = os.path.join(base_dir, local_url.split("?")[0])
                if os.path.exists(old_file_path):
                    os.remove(old_file_path)
    else:
        print(name + "\n└  Add: " + version)
        download(url, base_dir)
        # wirte to db
        cur.execute(
            "INSERT INTO " + arch + "(name, version, url) VALUES (?, ?, ?)",
            (name, version, url),
        )

    cur.close()
    conn.commit()
    conn.close()


if __name__ == "__main__":
    args = os.sys.argv
    if len(args) == 5:
        check_download(args[1], args[2], args[3], args[4])
    elif len(args) == 4:
        check_download(args[1], args[2], args[3], "x86_64")
    else:
        print(f"Usage: {args[0]} <package_name> <version> <url> [arch]")
        print("options:")
        print("    arch: x86_64, arm64. default is x86_64")