"""图片 4K 高清放大 — upscale reference image to 4K.

    tripocli img-upscale -a <asset_id> --wait -o ./upscaled.png
    tripocli img-upscale (自动取最新一张参考图放大)

实测流程（页面上 4K 图标抓到的请求）：
    POST /v2/studio/image/upscale
    {"asset_id": "...", "resource_key": "generate-image/..."}
      → {"task_id": "...", "asset_id": "..."}

轮询：
    POST /v2/studio/image/get_image_asset  {"asset_id": "..."}
      → status == "success", type == "upscale_image", output.data[0].url
"""

import os
import time

from ..errors import TripoAPIError, TripoTimeout

NAME = "img-upscale"
HELP = "图片 4K 高清放大：提升参考图分辨率（对应网页端 4K 按钮）"


def add_arguments(parser):
    parser.add_argument("-a", "--asset", help="图片资产 ID（默认自动取最近生成的一张）")
    parser.add_argument("--key", help="指定图片 resource_key（默认自动解析）")
    parser.add_argument("-w", "--wait", action="store_true", default=True, help="等待放大完成（默认等待）")
    parser.add_argument("--no-wait", dest="wait", action="store_false", help="不等待，提交后直接退出")
    parser.add_argument("-o", "--output", help="放大后的图片保存路径")
    parser.add_argument("--timeout", type=int, default=180, help="等待超时秒数（默认 180）")


def resolve_asset_and_key(ctx, asset_id, resource_key):
    if not asset_id:
        # 取最新的一张图片资产
        data = ctx.client.get_data(
            "POST", "/v2/studio/image/image_assets",
            body={"page_num": 1, "page_size": 1},
        ) or {}
        assets = data.get("assets") or []
        if not assets:
            raise TripoAPIError("未找到任何图片资产，请用 -a 指定 asset_id")
        asset_id = assets[0].get("asset_id")

    if not resource_key:
        info = ctx.client.get_data("POST", "/v2/studio/image/get_image_asset", body={"asset_id": asset_id}) or {}
        out_data = (info.get("output") or {}).get("data") or []
        if out_data and out_data[0].get("key"):
            resource_key = out_data[0].get("key")
        else:
            in_imgs = (info.get("input") or {}).get("prompt_image") or []
            if in_imgs and in_imgs[0].get("key"):
                resource_key = in_imgs[0].get("key")

    if not resource_key:
        raise TripoAPIError(f"无法从图片资产 {asset_id} 解析 resource_key，请用 --key 显式传入")

    return asset_id, resource_key


def run(ctx):
    args = ctx.args
    asset_id, key = resolve_asset_and_key(ctx, args.asset, args.key)
    ctx.out.line(f"🔍 提交 4K 放大任务: asset={asset_id}")

    resp = ctx.client.get_data("POST", "/v2/studio/image/upscale", body={
        "asset_id": asset_id,
        "resource_key": key,
    }) or {}

    new_asset_id = resp.get("asset_id") or resp.get("task_id")
    if not new_asset_id:
        raise TripoAPIError(f"upscale 未返回 asset_id: {resp}")

    if not args.wait:
        ctx.out.data(resp, human=lambda: ctx.out.line(f"✅ 任务已提交，asset_id: {new_asset_id}"))
        return resp

    # 轮询直到完成
    ctx.out.line(f"⏳ 等待 4K 放大完成: {new_asset_id}")
    start = time.time()
    while time.time() - start < args.timeout:
        info = ctx.client.get_data("POST", "/v2/studio/image/get_image_asset", body={"asset_id": new_asset_id}) or {}
        status = info.get("status")
        if status == "success":
            ctx.out.line("🎉 4K 放大完成！")
            out_imgs = (info.get("output") or {}).get("data") or []
            url = out_imgs[0].get("url") if out_imgs else None
            if url:
                ctx.out.line(f"图片地址: {url}")
                if args.output:
                    save_path = args.output
                    if os.path.isdir(save_path):
                        save_path = os.path.join(save_path, f"{new_asset_id}_4k.png")
                    ctx.client.download_file(url, save_path)
                    ctx.out.line(f"💾 已保存到: {save_path}")
            return info
        if status in ("failed", "expired"):
            raise TripoAPIError(f"4K 放大失败: status={status}")
        time.sleep(2)

    raise TripoTimeout(f"4K 放大超时（超过 {args.timeout} 秒）")