feat(backend): ✨ basic support for background tasks

mealie/schema/server/__init__.py

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+from .tasks import *

mealie/schema/server/tasks.py

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+import datetime
+import enum
+
+from fastapi_camelcase import CamelModel
+from pydantic import Field
+
+
+class ServerTaskNames(str, enum.Enum):
+    default = "Background Task"
+    backup_task = "Database Backup"
+
+
+class ServerTaskStatus(str, enum.Enum):
+    running = "running"
+    finished = "finished"
+    failed = "failed"
+
+
+class ServerTaskCreate(CamelModel):
+    group_id: int
+    name: ServerTaskNames = ServerTaskNames.default
+    created_at: datetime.datetime = Field(default_factory=datetime.datetime.now)
+    status: ServerTaskStatus = ServerTaskStatus.running
+    log: str = ""
+
+    def set_running(self) -> None:
+        self.status = ServerTaskStatus.running
+
+    def set_finished(self) -> None:
+        self.status = ServerTaskStatus.finished
+
+    def set_failed(self) -> None:
+        self.status = ServerTaskStatus.failed
+
+    def append_log(self, message: str) -> None:
+        # Prefix with Timestamp and append new line and join to log
+        self.log += f"{datetime.datetime.now()}: {message}\n"
+
+
+class ServerTask(ServerTaskCreate):
+    id: int
+
+    class Config:
+        orm_mode = True