Gamebanana Mod Downloader

banana.py

desc = "Simple script to download gamebanana mod categories."

import requests
import brotli
import argparse
from math import ceil
from time import sleep

def setUpArguments():
    parser = argparse.ArgumentParser(description=desc)
    parser.add_argument('-id', type=int, required=True, help="Mod Category ID")
    parser.add_argument('-p', '--per-page', type=int, default=50, help="Number of mods per page to download")
    return parser.parse_args()

def getModPage(page: int, mod_category: int, perPage: int):
    data = {
        "_nPage": f"{page}",
        "_nPerpage": {perPage},
        "_aFilters[Generic_Category]": f"{mod_category}"
    }
    
    res = requests.get("https://gamebanana.com/apiv10/Mod/Index", params=data, headers={'Accept-Encoding': 'br'})
    json = res.json()

    record_count = json['_aMetadata']['_nRecordCount']
    record_ids = [item['_idRow'] for item in json['_aRecords']]
    return record_count, record_ids

def getModCount(mod_category: int):
    return getModPage(1, mod_category, 1)[0]

def getModDownloads(ids: list):
    data = {
        'itemtype[]': ["Mod" for x in range(len(ids))],
        'itemid[]': ids,
        'fields[]': ["Files().aFiles()" for x in range(len(ids))]
    }
    res = requests.get("https://api.gamebanana.com/Core/Item/Data", params=data, headers={'Accept-Encoding': 'br'})
    json = res.json()

    # https://i.stack.imgur.com/0GoV5.gif
    flattened_json = [item for sublist in json for item in sublist]

    downloads_dict = {}
    for d in flattened_json:
        downloads_dict.update(d)

    return list(downloads_dict.keys())

if __name__ == "__main__":
    args = setUpArguments()

    mod_count = getModCount(args.id)
    print(f"The category has {mod_count} mods.")
    num_pages = ceil(mod_count / args.per_page)

    mod_downloads = []
    for cur_page in range(1, num_pages + 1):
        print(f"Page {cur_page}/{num_pages}")
        mod_ids = getModPage(cur_page, args.id, args.per_page)[1]
        sleep(1)
        print("Getting mod download links")
        cur_downloads = getModDownloads(mod_ids)
        mod_downloads += cur_downloads
        sleep(2)

    mod_downloads_2 = [f"gamebanana.com/dl/{id}" for id in mod_downloads]
    file = open("downloads.txt", "w")

    file.write("\r\n".join(mod_downloads_2))
    file.close()
    print("done")
    
    # afterwards, run wget --content-disposition -P ./mods -t 50 -i downloads.txt --wait 5 

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