"""
一键部署到 Hugging Face Spaces（永久免费在线）

使用方法:
  1. 注册 Hugging Face: https://huggingface.co/join
  2. 创建 Access Token: https://huggingface.co/settings/tokens
  3. 运行: python deploy.py

前提条件:
  - Git 已安装
  - huggingface_hub 已安装（已预装）
  - 一个 Hugging Face 账号
"""

import os
import sys
import subprocess
import json
from pathlib import Path

BASE_DIR = Path(__file__).parent

def run_cmd(cmd, cwd=None, capture=True):
    """运行命令并返回结果"""
    try:
        r = subprocess.run(
            cmd, shell=True, cwd=cwd or BASE_DIR,
            capture_output=capture, text=True, timeout=120
        )
        return r.returncode, r.stdout.strip() if capture else "", r.stderr.strip() if capture else ""
    except subprocess.TimeoutExpired:
        return -1, "", "超时"
    except Exception as e:
        return -1, "", str(e)


def check_prerequisites():
    """检查前置条件"""
    print("=" * 50)
    print("  检查前置条件...")
    print("=" * 50)

    # 检查 Git
    code, out, _ = run_cmd("git --version")
    if code != 0 or not out:
        print("  ❌ Git 未安装！请先安装 Git: https://git-scm.com/")
        return False
    print(f"  ✅ Git: {out}")

    # 检查 huggingface_hub
    try:
        import huggingface_hub
        print(f"  ✅ huggingface_hub: {huggingface_hub.__version__}")
    except ImportError:
        print("  ❌ huggingface_hub 未安装！")
        return False

    # 检查 Git LFS（用于大文件，非必需）
    code, out, _ = run_cmd("git lfs version")
    if code == 0:
        print(f"  ✅ Git LFS: {out.split()[2] if out else '已安装'}")
    else:
        print("  ℹ️  Git LFS 未安装（非必需，已忽略）")

    return True


def get_hf_token():
    """获取 Hugging Face Token"""
    token = os.environ.get("HF_TOKEN") or os.environ.get("HUGGINGFACE_TOKEN")
    if token:
        return token

    print()
    print("=" * 50)
    print("  Hugging Face Token 设置")
    print("=" * 50)
    print()
    print("  请前往 https://huggingface.co/settings/tokens")
    print("  创建一个 Access Token（选 write 权限）")
    print()
    token = input("  输入你的 HF Token: ").strip()
    return token if token else None


def deploy_to_hf_spaces(token, space_name="garbage-classifier"):
    """部署到 Hugging Face Spaces"""
    username = None
    try:
        from huggingface_hub import HfApi, login, create_repo, get_full_repo_name
        api = HfApi(token=token)

        # 获取用户名
        user_info = api.whoami()
        username = user_info["name"]
        repo_id = f"{username}/{space_name}"
        full_url = f"https://huggingface.co/spaces/{repo_id}"

        print()
        print("=" * 50)
        print(f"  部署到 Hugging Face Spaces")
        print("=" * 50)
        print(f"  用户名: {username}")
        print(f"  Space: {space_name}")
        print(f"  地址: {full_url}")
        print()

        # 登录
        login(token=token, add_to_git_credential=True)

        # 创建 Space（如果不存在）
        print("  创建 Space...")
        try:
            create_repo(
                repo_id=repo_id,
                repo_type="space",
                space_sdk="docker",
                token=token,
                exist_ok=True,
            )
            print("  ✅ Space 创建/确认成功")
        except Exception as e:
            print(f"  ⚠️  创建 Space 时遇到问题: {e}")
            print(f"  请手动创建 Space: https://huggingface.co/new-space")
            print(f"     Space Name: {space_name}")
            print(f"     SDK: Docker")
            return False

        # 初始化 Git 仓库并推送
        print()
        print("  初始化 Git 并推送代码...")
        print("  （首次推送会安装依赖，约需 10-15 分钟）")
        print()

        # 初始化 git
        run_cmd("git init", capture=False)
        run_cmd("git checkout -b main", capture=False)

        # 配置 git
        run_cmd(f'git config user.name "{username}"', capture=False)
        run_cmd(f'git config user.email "{username}@users.noreply.huggingface.co"', capture=False)

        # 添加文件
        run_cmd("git add -A", capture=False)

        # 提交
        code, out, err = run_cmd('git commit -m "Initial deploy: garbage classifier"')
        if code != 0:
            if "nothing to commit" in err.lower() or "nothing to commit" in out.lower():
                print("  ℹ️  没有新文件需要提交")
            else:
                print(f"  ⚠️  Commit 警告: {err[:100] if err else out[:100]}")

        # 设置 remote
        space_url = f"https://huggingface.co/spaces/{repo_id}"
        run_cmd(f"git remote add space {space_url}", capture=False)

        # 推送
        print("  正在推送代码到 Hugging Face Spaces...")
        print("  (这可能需要几分钟)...")
        code, out, err = run_cmd(
            f"git push --force space main",
            capture=False
        )

        if code == 0:
            print()
            print("=" * 50)
            print(f"  ✅ 部署成功！".center(50))
            print("=" * 50)
            print()
            print(f"  🌐 访问地址:")
            print(f"     https://huggingface.co/spaces/{repo_id}")
            print()
            print(f"  ⏳ 首次启动需要 5-10 分钟安装依赖")
            print(f"     页面显示 Building 属于正常现象")
            print()
            print(f"  🚀 构建完成后直接打开即可使用！")
            print()
            return True
        else:
            print(f"  ❌ 推送失败")
            print(f"  {err[:200] if err else out[:200]}")
            return False

    except Exception as e:
        print(f"  ❌ 部署失败: {e}")
        return False


def main():
    print()
    print(" 🌱 智能垃圾分类系统 - 一键部署")
    print(" ====================================")
    print()

    if not check_prerequisites():
        sys.exit(1)

    token = get_hf_token()
    if not token:
        print("❌ 未提供 Token，部署取消")
        sys.exit(1)

    # 可选自定义 Space 名称
    name = input(f"  Space 名称 (回车默认: garbage-classifier): ").strip()
    if not name:
        name = "garbage-classifier"

    success = deploy_to_hf_spaces(token, name)
    if not success:
        print()
        print("  💡 你也可以手动部署：")
        print("  1. 打开 https://huggingface.co/new-space")
        print("  2. Space Name: garbage-classifier")
        print("  3. SDK: Docker")
        print("  4. 创建后，将项目代码 push 上去即可")
        sys.exit(1)


if __name__ == "__main__":
    main()