import json
import requests
import gradio as gr
from utils import is_valid_url, HEADER, EN_US, API_URL

ZH2EN = {
    "输入长链接": "Input a long URL",
    "输出短链接": "Output short URL",
    "预览短链接": "Preview short URL",
    "将长链接转换为短的、易于共享的链接": "Convert long urls into short, easy-to-share links",
    "状态栏": "Status",
}


def _L(zh_txt: str):
    return ZH2EN[zh_txt] if EN_US else zh_txt


# outer func
def infer(longUrl: str):
    status = "Success"
    shortUrl = preview = None
    try:
        response = requests.post(API_URL, json={"url": longUrl}, headers=HEADER)
        if response.status_code == 200:
            shortUrl = json.loads(response.text)["shortUrl"]
        else:
            raise ConnectionError(response.text)

        if is_valid_url(shortUrl):
            preview = f'<a href="{shortUrl}" target="_blank">{shortUrl}</a>'

    except Exception as e:
        status = f"{e}"

    return status, shortUrl, preview


def url_shortner():
    return gr.Interface(
        fn=infer,
        inputs=gr.Textbox(
            label=_L("输入长链接"),
            placeholder=_L("将长链接转换为短的、易于共享的链接"),
        ),
        outputs=[
            gr.Textbox(label=_L("状态栏"), show_copy_button=True),
            gr.Textbox(label=_L("输出短链接"), show_copy_button=True),
            gr.HTML(
                container=True,
                show_label=True,
                label=_L("预览短链接"),
            ),
        ],
        flagging_mode="never",
        examples=["https://www.bing.com", "https://www.baidu.com"],
        cache_examples=False,
    )