706 lines
26 KiB
Python
706 lines
26 KiB
Python
# 模板表 - PostgreSQL 版本
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import uuid
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import json
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from typing import Dict, List, Any, Optional
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from datetime import datetime
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from contextlib import contextmanager
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from python_core.config import settings
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from python_core.utils.logger import setup_logger
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from .types import TemplateInfo
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# 尝试导入 psycopg2，如果失败则提供友好的错误信息
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try:
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import psycopg2
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import psycopg2.extras
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PSYCOPG2_AVAILABLE = True
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except ImportError as e:
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PSYCOPG2_AVAILABLE = False
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PSYCOPG2_ERROR = str(e)
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logger = setup_logger(__name__)
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class TemplateTablePostgres:
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"""
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模板表类 - PostgreSQL 版本
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基于 PostgreSQL 数据库实现的模板管理功能
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"""
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def __init__(self):
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# 检查 psycopg2 是否可用
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if not PSYCOPG2_AVAILABLE:
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error_msg = f"""
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PostgreSQL 驱动 psycopg2 未安装。请安装：
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方案1（推荐）：
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pip install psycopg2-binary
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方案2：
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# Ubuntu/Debian
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sudo apt-get install postgresql libpq-dev python3-dev
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pip install psycopg2
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# CentOS/RHEL
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sudo yum install postgresql postgresql-devel python3-devel
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pip install psycopg2
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# macOS
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brew install postgresql
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pip install psycopg2
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原始错误: {PSYCOPG2_ERROR}
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"""
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logger.error(error_msg)
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raise ImportError(error_msg)
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self.db_url = settings.db
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self.table_name = "templates"
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# 初始化模板表
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self._init_template_table()
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@contextmanager
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def _get_connection(self):
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"""获取数据库连接的上下文管理器"""
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conn = None
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try:
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conn = psycopg2.connect(self.db_url)
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yield conn
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except Exception as e:
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if conn:
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conn.rollback()
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logger.error(f"Database connection error: {e}")
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raise e
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finally:
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if conn:
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conn.close()
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def _init_template_table(self):
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"""初始化模板表"""
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try:
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with self._get_connection() as conn:
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with conn.cursor() as cursor:
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# 创建模板表（如果不存在）
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create_table_sql = """
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CREATE TABLE IF NOT EXISTS templates (
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id VARCHAR(36) PRIMARY KEY,
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name VARCHAR(255) NOT NULL,
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description TEXT DEFAULT '',
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thumbnail_path TEXT DEFAULT '',
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draft_content_path TEXT DEFAULT '',
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draft_content JSONB DEFAULT '{}',
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resources_path TEXT DEFAULT '',
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canvas_config JSONB DEFAULT '{}',
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duration INTEGER DEFAULT 0,
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material_count INTEGER DEFAULT 0,
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track_count INTEGER DEFAULT 0,
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tags JSONB DEFAULT '[]',
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is_cloud BOOLEAN DEFAULT FALSE,
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user_id VARCHAR(36) NOT NULL,
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
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);
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"""
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cursor.execute(create_table_sql)
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# 创建索引
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indexes = [
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"CREATE INDEX IF NOT EXISTS idx_templates_name ON templates(name);",
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"CREATE INDEX IF NOT EXISTS idx_templates_user_id ON templates(user_id);",
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"CREATE INDEX IF NOT EXISTS idx_templates_is_cloud ON templates(is_cloud);",
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"CREATE INDEX IF NOT EXISTS idx_templates_created_at ON templates(created_at);",
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"CREATE INDEX IF NOT EXISTS idx_templates_tags ON templates USING GIN(tags);",
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"CREATE INDEX IF NOT EXISTS idx_templates_draft_content ON templates USING GIN(draft_content);",
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"CREATE INDEX IF NOT EXISTS idx_templates_user_name ON templates(user_id, name);"
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]
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for index_sql in indexes:
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cursor.execute(index_sql)
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conn.commit()
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logger.info("Template table initialized")
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except Exception as e:
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logger.error(f"Failed to initialize template table: {e}")
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raise e
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def create_template(self, template_info: TemplateInfo) -> str:
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"""
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创建模板
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Args:
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template_info: 模板信息
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Returns:
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模板ID
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"""
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try:
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with self._get_connection() as conn:
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with conn.cursor() as cursor:
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# 检查模板名称是否已存在（同一用户下）
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cursor.execute(
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"SELECT id FROM templates WHERE name = %s AND user_id = %s",
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(template_info.name, template_info.user_id)
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)
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if cursor.fetchone():
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raise ValueError(f"Template name '{template_info.name}' already exists for this user")
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# 生成模板ID（如果没有提供）
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template_id = template_info.id or str(uuid.uuid4())
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# 插入模板记录
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insert_sql = """
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INSERT INTO templates (
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id, name, description, thumbnail_path, draft_content_path,
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draft_content, resources_path, canvas_config, duration, material_count,
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track_count, tags, is_cloud, user_id, created_at, updated_at
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) VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s)
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"""
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now = datetime.now()
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# 处理 draft_content，如果 template_info 有 draft_content 属性则使用，否则为空对象
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draft_content = getattr(template_info, 'draft_content', {})
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cursor.execute(insert_sql, (
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template_id,
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template_info.name,
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template_info.description,
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template_info.thumbnail_path,
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template_info.draft_content_path,
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json.dumps(draft_content),
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template_info.resources_path,
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json.dumps(template_info.canvas_config),
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template_info.duration,
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template_info.material_count,
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template_info.track_count,
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json.dumps(template_info.tags),
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template_info.is_cloud,
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template_info.user_id,
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now,
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now
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))
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conn.commit()
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logger.info(f"Created template: {template_info.name} (ID: {template_id})")
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return template_id
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except Exception as e:
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logger.error(f"Failed to create template '{template_info.name}': {e}")
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raise e
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def get_template_by_id(self, template_id: str) -> Optional[TemplateInfo]:
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"""
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根据ID获取模板
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Args:
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template_id: 模板ID
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Returns:
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模板信息，如果不存在返回None
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"""
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try:
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with self._get_connection() as conn:
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with conn.cursor(cursor_factory=psycopg2.extras.RealDictCursor) as cursor:
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cursor.execute("SELECT * FROM templates WHERE id = %s", (template_id,))
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row = cursor.fetchone()
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if row:
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return self._row_to_template_info(row)
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return None
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except Exception as e:
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logger.error(f"Failed to get template by ID '{template_id}': {e}")
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return None
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def get_template_by_name(self, name: str, user_id: str = None) -> Optional[TemplateInfo]:
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"""
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根据名称获取模板
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Args:
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name: 模板名称
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user_id: 用户ID（可选，用于过滤用户模板）
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Returns:
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模板信息，如果不存在返回None
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"""
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try:
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with self._get_connection() as conn:
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with conn.cursor(cursor_factory=psycopg2.extras.RealDictCursor) as cursor:
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if user_id:
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cursor.execute(
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"SELECT * FROM templates WHERE name = %s AND user_id = %s LIMIT 1",
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(name, user_id)
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)
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else:
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cursor.execute("SELECT * FROM templates WHERE name = %s LIMIT 1", (name,))
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row = cursor.fetchone()
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if row:
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return self._row_to_template_info(row)
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return None
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except Exception as e:
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logger.error(f"Failed to get template by name '{name}': {e}")
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return None
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def update_template(self, template_id: str, updates: Dict[str, Any]) -> bool:
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"""
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更新模板信息
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Args:
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template_id: 模板ID
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updates: 要更新的字段
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Returns:
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更新成功返回True
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"""
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try:
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with self._get_connection() as conn:
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with conn.cursor() as cursor:
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# 检查模板是否存在
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cursor.execute("SELECT id FROM templates WHERE id = %s", (template_id,))
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if not cursor.fetchone():
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logger.warning(f"Template not found: {template_id}")
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return False
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# 移除不应该直接更新的字段
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protected_fields = ["id", "created_at"]
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filtered_updates = {k: v for k, v in updates.items() if k not in protected_fields}
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if not filtered_updates:
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logger.warning("No valid fields to update")
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return False
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# 添加更新时间
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filtered_updates["updated_at"] = datetime.now()
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# 处理 JSON 字段
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if "canvas_config" in filtered_updates:
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filtered_updates["canvas_config"] = json.dumps(filtered_updates["canvas_config"])
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if "tags" in filtered_updates:
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filtered_updates["tags"] = json.dumps(filtered_updates["tags"])
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if "draft_content" in filtered_updates:
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filtered_updates["draft_content"] = json.dumps(filtered_updates["draft_content"])
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# 构建更新SQL
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set_clauses = []
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values = []
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for key, value in filtered_updates.items():
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set_clauses.append(f"{key} = %s")
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values.append(value)
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values.append(template_id) # WHERE条件的参数
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update_sql = f"UPDATE templates SET {', '.join(set_clauses)} WHERE id = %s"
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cursor.execute(update_sql, values)
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conn.commit()
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if cursor.rowcount > 0:
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logger.info(f"Updated template: {template_id}")
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return True
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else:
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logger.warning(f"No rows updated for template: {template_id}")
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return False
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except Exception as e:
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logger.error(f"Failed to update template '{template_id}': {e}")
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return False
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def delete_template(self, template_id: str) -> bool:
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"""
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删除模板
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Args:
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template_id: 模板ID
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Returns:
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删除成功返回True
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"""
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try:
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with self._get_connection() as conn:
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with conn.cursor() as cursor:
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cursor.execute("DELETE FROM templates WHERE id = %s", (template_id,))
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conn.commit()
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if cursor.rowcount > 0:
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logger.info(f"Deleted template: {template_id}")
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return True
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else:
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logger.warning(f"No template found to delete: {template_id}")
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return False
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except Exception as e:
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logger.error(f"Failed to delete template '{template_id}': {e}")
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return False
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def get_templates_by_user(self, user_id: str, include_cloud: bool = True, limit: int = 100) -> List[TemplateInfo]:
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"""
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获取用户的模板列表
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Args:
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user_id: 用户ID
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include_cloud: 是否包含云端公共模板
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limit: 最大返回数量
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Returns:
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模板列表
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"""
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try:
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with self._get_connection() as conn:
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with conn.cursor(cursor_factory=psycopg2.extras.RealDictCursor) as cursor:
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if include_cloud:
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sql = """
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SELECT * FROM templates
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WHERE user_id = %s OR is_cloud = TRUE
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ORDER BY created_at DESC
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LIMIT %s
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"""
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cursor.execute(sql, (user_id, limit))
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else:
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sql = """
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SELECT * FROM templates
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WHERE user_id = %s
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ORDER BY created_at DESC
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LIMIT %s
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"""
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cursor.execute(sql, (user_id, limit))
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rows = cursor.fetchall()
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templates = []
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for row in rows:
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template_info = self._row_to_template_info(row)
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templates.append(template_info)
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return templates
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except Exception as e:
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logger.error(f"Failed to get templates for user '{user_id}': {e}")
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return []
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def search_templates(self, query: str, user_id: str = None, include_cloud: bool = True, limit: int = 50) -> List[TemplateInfo]:
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"""
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搜索模板
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Args:
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query: 搜索关键词（匹配名称、描述、标签）
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user_id: 用户ID（可选，用于过滤用户模板）
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include_cloud: 是否包含云端公共模板
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limit: 最大返回数量
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Returns:
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匹配的模板列表
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"""
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try:
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with self._get_connection() as conn:
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with conn.cursor(cursor_factory=psycopg2.extras.RealDictCursor) as cursor:
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search_pattern = f"%{query}%"
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if user_id and include_cloud:
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sql = """
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SELECT * FROM templates
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WHERE (user_id = %s OR is_cloud = TRUE)
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AND (name ILIKE %s OR description ILIKE %s OR tags::text ILIKE %s)
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ORDER BY created_at DESC
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LIMIT %s
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"""
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cursor.execute(sql, (user_id, search_pattern, search_pattern, search_pattern, limit))
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elif user_id:
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sql = """
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SELECT * FROM templates
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WHERE user_id = %s
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AND (name ILIKE %s OR description ILIKE %s OR tags::text ILIKE %s)
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ORDER BY created_at DESC
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LIMIT %s
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"""
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cursor.execute(sql, (user_id, search_pattern, search_pattern, search_pattern, limit))
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else:
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sql = """
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SELECT * FROM templates
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WHERE name ILIKE %s OR description ILIKE %s OR tags::text ILIKE %s
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ORDER BY created_at DESC
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LIMIT %s
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"""
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cursor.execute(sql, (search_pattern, search_pattern, search_pattern, limit))
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rows = cursor.fetchall()
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templates = []
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for row in rows:
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template_info = self._row_to_template_info(row)
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templates.append(template_info)
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return templates
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except Exception as e:
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logger.error(f"Failed to search templates with query '{query}': {e}")
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return []
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def get_templates_by_tag(self, tag: str, user_id: str = None, include_cloud: bool = True, limit: int = 50) -> List[TemplateInfo]:
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"""
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根据标签获取模板
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Args:
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tag: 标签名称
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user_id: 用户ID（可选）
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include_cloud: 是否包含云端公共模板
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limit: 最大返回数量
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Returns:
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匹配的模板列表
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"""
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try:
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with self._get_connection() as conn:
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with conn.cursor(cursor_factory=psycopg2.extras.RealDictCursor) as cursor:
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tag_json = json.dumps(tag)
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if user_id and include_cloud:
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sql = """
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SELECT * FROM templates
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WHERE (user_id = %s OR is_cloud = TRUE)
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AND tags @> %s
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ORDER BY created_at DESC
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LIMIT %s
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"""
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cursor.execute(sql, (user_id, tag_json, limit))
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elif user_id:
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sql = """
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SELECT * FROM templates
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WHERE user_id = %s
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AND tags @> %s
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ORDER BY created_at DESC
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LIMIT %s
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"""
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cursor.execute(sql, (user_id, tag_json, limit))
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else:
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sql = """
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SELECT * FROM templates
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WHERE tags @> %s
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ORDER BY created_at DESC
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LIMIT %s
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"""
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cursor.execute(sql, (tag_json, limit))
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rows = cursor.fetchall()
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templates = []
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for row in rows:
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template_info = self._row_to_template_info(row)
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templates.append(template_info)
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return templates
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except Exception as e:
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logger.error(f"Failed to get templates by tag '{tag}': {e}")
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return []
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def get_cloud_templates(self, limit: int = 100) -> List[TemplateInfo]:
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"""
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获取云端公共模板
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Args:
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limit: 最大返回数量
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Returns:
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云端模板列表
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"""
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try:
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with self._get_connection() as conn:
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with conn.cursor(cursor_factory=psycopg2.extras.RealDictCursor) as cursor:
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sql = """
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SELECT * FROM templates
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WHERE is_cloud = TRUE
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ORDER BY created_at DESC
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LIMIT %s
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"""
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cursor.execute(sql, (limit,))
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rows = cursor.fetchall()
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templates = []
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for row in rows:
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template_info = self._row_to_template_info(row)
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templates.append(template_info)
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return templates
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except Exception as e:
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logger.error(f"Failed to get cloud templates: {e}")
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return []
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def get_template_count(self, user_id: str = None, include_cloud: bool = True) -> int:
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"""
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获取模板数量
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||
Args:
|
||
user_id: 用户ID（可选）
|
||
include_cloud: 是否包含云端公共模板
|
||
|
||
Returns:
|
||
模板数量
|
||
"""
|
||
try:
|
||
with self._get_connection() as conn:
|
||
with conn.cursor() as cursor:
|
||
if user_id is None:
|
||
cursor.execute("SELECT COUNT(*) FROM templates")
|
||
elif include_cloud:
|
||
cursor.execute(
|
||
"SELECT COUNT(*) FROM templates WHERE user_id = %s OR is_cloud = TRUE",
|
||
(user_id,)
|
||
)
|
||
else:
|
||
cursor.execute("SELECT COUNT(*) FROM templates WHERE user_id = %s", (user_id,))
|
||
|
||
result = cursor.fetchone()
|
||
return result[0] if result else 0
|
||
|
||
except Exception as e:
|
||
logger.error(f"Failed to get template count: {e}")
|
||
return 0
|
||
|
||
def batch_import_templates(self, templates: List[TemplateInfo]) -> Dict[str, Any]:
|
||
"""
|
||
批量导入模板
|
||
|
||
Args:
|
||
templates: 模板列表
|
||
|
||
Returns:
|
||
导入结果统计
|
||
"""
|
||
try:
|
||
success_count = 0
|
||
failed_count = 0
|
||
failed_templates = []
|
||
|
||
for template in templates:
|
||
try:
|
||
# 检查是否已存在（根据unique id属性）
|
||
existing = self.get_template_by_id(template.id)
|
||
if existing:
|
||
logger.warning(f"Template already exists, skipping: {template.name}")
|
||
continue
|
||
|
||
# 创建模板
|
||
self.create_template(template)
|
||
success_count += 1
|
||
|
||
except Exception as e:
|
||
logger.error(f"Failed to import template '{template.name}': {e}")
|
||
failed_count += 1
|
||
failed_templates.append({
|
||
"name": template.name,
|
||
"error": str(e)
|
||
})
|
||
|
||
result = {
|
||
"total": len(templates),
|
||
"success": success_count,
|
||
"failed": failed_count,
|
||
"failed_templates": failed_templates
|
||
}
|
||
|
||
logger.info(f"Batch import completed: {success_count} success, {failed_count} failed")
|
||
return result
|
||
|
||
except Exception as e:
|
||
logger.error(f"Failed to batch import templates: {e}")
|
||
return {
|
||
"total": len(templates),
|
||
"success": 0,
|
||
"failed": len(templates),
|
||
"error": str(e)
|
||
}
|
||
|
||
def get_popular_tags(self, user_id: str = None, limit: int = 20) -> List[Dict[str, Any]]:
|
||
"""
|
||
获取热门标签
|
||
|
||
Args:
|
||
user_id: 用户ID（可选）
|
||
limit: 最大返回数量
|
||
|
||
Returns:
|
||
标签列表，包含标签名称和使用次数
|
||
"""
|
||
try:
|
||
with self._get_connection() as conn:
|
||
with conn.cursor() as cursor:
|
||
if user_id:
|
||
sql = """
|
||
SELECT tag, COUNT(*) as count
|
||
FROM (
|
||
SELECT jsonb_array_elements_text(tags) as tag
|
||
FROM templates
|
||
WHERE user_id = %s OR is_cloud = TRUE
|
||
) t
|
||
GROUP BY tag
|
||
ORDER BY count DESC
|
||
LIMIT %s
|
||
"""
|
||
cursor.execute(sql, (user_id, limit))
|
||
else:
|
||
sql = """
|
||
SELECT tag, COUNT(*) as count
|
||
FROM (
|
||
SELECT jsonb_array_elements_text(tags) as tag
|
||
FROM templates
|
||
) t
|
||
GROUP BY tag
|
||
ORDER BY count DESC
|
||
LIMIT %s
|
||
"""
|
||
cursor.execute(sql, (limit,))
|
||
|
||
rows = cursor.fetchall()
|
||
popular_tags = []
|
||
|
||
for row in rows:
|
||
popular_tags.append({
|
||
"tag": row[0],
|
||
"count": row[1]
|
||
})
|
||
|
||
return popular_tags
|
||
|
||
except Exception as e:
|
||
logger.error(f"Failed to get popular tags: {e}")
|
||
return []
|
||
|
||
# 辅助方法
|
||
def _row_to_template_info(self, row: Dict[str, Any]) -> TemplateInfo:
|
||
"""将数据库行转换为TemplateInfo对象"""
|
||
template_info = TemplateInfo(
|
||
id=row['id'],
|
||
name=row['name'],
|
||
description=row['description'],
|
||
thumbnail_path=row['thumbnail_path'],
|
||
draft_content_path=row['draft_content_path'],
|
||
resources_path=row['resources_path'],
|
||
canvas_config=row['canvas_config'] if isinstance(row['canvas_config'], dict) else {},
|
||
duration=row['duration'],
|
||
material_count=row['material_count'],
|
||
track_count=row['track_count'],
|
||
tags=row['tags'] if isinstance(row['tags'], list) else [],
|
||
is_cloud=row['is_cloud'],
|
||
user_id=row['user_id'],
|
||
created_at=row['created_at'].isoformat() if row['created_at'] else "",
|
||
updated_at=row['updated_at'].isoformat() if row['updated_at'] else ""
|
||
)
|
||
|
||
# 添加 draft_content 属性（动态添加）
|
||
draft_content = row.get('draft_content', {})
|
||
if isinstance(draft_content, dict):
|
||
template_info.draft_content = draft_content
|
||
else:
|
||
template_info.draft_content = {}
|
||
|
||
return template_info
|
||
|
||
|
||
# 创建全局模板表实例
|
||
template_table = TemplateTablePostgres()
|