import urllib.request
import urllib.error
import json

url = "http://localhost:8000/api/templates?machine_model=x11&device_type=wash&template_type=common"

try:
    req = urllib.request.Request(url)
    with urllib.request.urlopen(req) as response:
        templates = json.loads(response.read().decode('utf-8'))
        print(f"获取到 {len(templates)} 个模板")
        
        if templates:
            tpl = templates[0]
            print(f"测试: {tpl['name']}")
            
            # 测试预览
            preview_url = "http://localhost:8000/api/templates/preview"
            payload = json.dumps({
                "template_body": tpl['template_body'],
                "parameters": {}
            }).encode('utf-8')
            
            req2 = urllib.request.Request(preview_url, data=payload, headers={'Content-Type': 'application/json'})
            with urllib.request.urlopen(req2) as response2:
                result = json.loads(response2.read().decode('utf-8'))
                text = result.get('rendered_text', '')
                print(f"✅ 预览成功: {len(text)}字")
                print(f"结果: {text[:200]}")
except Exception as e:
    print(f"❌ 错误: {e}")