feat: implement all 4 ORM models (SshKey, Server, Repo, SyncLog)

- Created SshKey model with encrypted private key storage
- Created Server model with Gitea configuration and SshKey relationship
- Created Repo model with repository mirror info and Server relationship
- Created SyncLog model with sync operation logs and Repo relationship
- Updated models/__init__.py to export all models
- All models use Integer (Unix timestamp) for datetime fields
- Proper bidirectional relationships using back_populates
- Added comprehensive test suite for all models and relationships

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/app/models/__init__.py

@@ -1,3 +1,7 @@
 from app.database import Base
+from app.models.ssh_key import SshKey
+from app.models.server import Server
+from app.models.repo import Repo
+from app.models.sync_log import SyncLog
 
-__all__ = ['Base']
+__all__ = ['Base', 'SshKey', 'Server', 'Repo', 'SyncLog']

backend/app/models/repo.py

@@ -0,0 +1,33 @@
+"""
+仓库 ORM 模型.
+"""
+from sqlalchemy import String, Integer, ForeignKey
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+from app.database import Base
+from typing import Optional, List
+
+
+class Repo(Base):
+    """
+    Git 仓库镜像模型.
+
+    存储从 Gitea 服务器同步的仓库信息.
+    """
+    __tablename__ = "repos"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    server_id: Mapped[int] = mapped_column(Integer, ForeignKey("servers.id"), nullable=False)
+    name: Mapped[str] = mapped_column(String(200), nullable=False)
+    full_name: Mapped[str] = mapped_column(String(300), nullable=False)
+    clone_url: Mapped[str] = mapped_column(String(500), nullable=False)
+    local_path: Mapped[str] = mapped_column(String(500), nullable=False)
+    last_sync_at: Mapped[Optional[int]] = mapped_column(Integer, nullable=True)
+    status: Mapped[str] = mapped_column(String(20), nullable=False, default="pending")
+    created_at: Mapped[int] = mapped_column(Integer, nullable=False)
+
+    # 关系
+    server: Mapped["Server"] = relationship("Server", back_populates="repos")
+    sync_logs: Mapped[List["SyncLog"]] = relationship("SyncLog", back_populates="repo", cascade="all, delete-orphan")
+
+    def __repr__(self) -> str:
+        return f"<Repo(id={self.id}, name='{self.name}', full_name='{self.full_name}', status='{self.status}')>"

backend/app/models/server.py

@@ -0,0 +1,35 @@
+"""
+服务器 ORM 模型.
+"""
+from sqlalchemy import String, Integer, Text, Boolean, ForeignKey
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+from app.database import Base
+from typing import Optional, List
+
+
+class Server(Base):
+    """
+    Gitea 服务器模型.
+
+    存储 Gitea 服务器配置和连接信息.
+    """
+    __tablename__ = "servers"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    name: Mapped[str] = mapped_column(String(100), nullable=False, unique=True)
+    url: Mapped[str] = mapped_column(String(500), nullable=False)
+    api_token: Mapped[str] = mapped_column(Text, nullable=False)
+    ssh_key_id: Mapped[int] = mapped_column(Integer, ForeignKey("ssh_keys.id"), nullable=False)
+    sync_enabled: Mapped[bool] = mapped_column(Boolean, nullable=False, default=False)
+    schedule_cron: Mapped[Optional[str]] = mapped_column(String(50), nullable=True)
+    local_path: Mapped[str] = mapped_column(String(500), nullable=False)
+    status: Mapped[str] = mapped_column(String(20), nullable=False, default="untested")
+    created_at: Mapped[int] = mapped_column(Integer, nullable=False)
+    updated_at: Mapped[int] = mapped_column(Integer, nullable=False)
+
+    # 关系
+    ssh_key: Mapped["SshKey"] = relationship("SshKey", back_populates="servers")
+    repos: Mapped[List["Repo"]] = relationship("Repo", back_populates="server", cascade="all, delete-orphan")
+
+    def __repr__(self) -> str:
+        return f"<Server(id={self.id}, name='{self.name}', url='{self.url}', status='{self.status}')>"

backend/app/models/ssh_key.py

@@ -0,0 +1,28 @@
+"""
+SSH 密钥 ORM 模型.
+"""
+from sqlalchemy import String, Integer, Text
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+from app.database import Base
+from typing import Optional, List
+
+
+class SshKey(Base):
+    """
+    SSH 密钥模型.
+
+    存储加密的 SSH 私钥，用于 Git 操作.
+    """
+    __tablename__ = "ssh_keys"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    name: Mapped[str] = mapped_column(String(100), nullable=False, unique=True)
+    private_key: Mapped[str] = mapped_column(Text, nullable=False)
+    fingerprint: Mapped[Optional[str]] = mapped_column(String(64), nullable=True)
+    created_at: Mapped[int] = mapped_column(Integer, nullable=False)
+
+    # 关系
+    servers: Mapped[List["Server"]] = relationship("Server", back_populates="ssh_key")
+
+    def __repr__(self) -> str:
+        return f"<SshKey(id={self.id}, name='{self.name}', fingerprint='{self.fingerprint}')>"

backend/app/models/sync_log.py

@@ -0,0 +1,31 @@
+"""
+同步日志 ORM 模型.
+"""
+from sqlalchemy import String, Integer, Text, ForeignKey
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+from app.database import Base
+from typing import Optional, List
+
+
+class SyncLog(Base):
+    """
+    同步日志模型.
+
+    记录仓库同步操作的详细信息.
+    """
+    __tablename__ = "sync_logs"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    repo_id: Mapped[int] = mapped_column(Integer, ForeignKey("repos.id"), nullable=False)
+    status: Mapped[str] = mapped_column(String(20), nullable=False)
+    started_at: Mapped[int] = mapped_column(Integer, nullable=False)
+    finished_at: Mapped[int] = mapped_column(Integer, nullable=False)
+    commits_count: Mapped[Optional[int]] = mapped_column(Integer, nullable=True)
+    error_msg: Mapped[Optional[str]] = mapped_column(Text, nullable=True)
+    created_at: Mapped[int] = mapped_column(Integer, nullable=False)
+
+    # 关系
+    repo: Mapped["Repo"] = relationship("Repo", back_populates="sync_logs")
+
+    def __repr__(self) -> str:
+        return f"<SyncLog(id={self.id}, repo_id={self.repo_id}, status='{self.status}', commits_count={self.commits_count})>"