1 files changed, 50 insertions, 0 deletions
diff --git a/plugins/ConcatPlugin.py b/plugins/ConcatPlugin.py
new file mode 100644
index 0000000..43d7db2
--- /dev/null
+++ b/plugins/ConcatPlugin.py
@@ -0,0 +1,50 @@
+from typing import Any
+import time
+
+from tinydb import Query
+from app.Item import Item
+from app.PluginInterface import Params, PluginInterface
+from app.DatabaseManager import database_manager
+from app.utils import ItemDict, dict_to_item, item_to_dict
+
+
+class Plugin(PluginInterface):
+    def __init__(self, id: str, params: Params) -> None:
+        super().__init__(id, params)
+        print(f"[ConcatPlugin#{self.id}] initialized")
+
+    def item_sort_key(self, item: Item) -> time.struct_time:
+        if item.pub_date is None:
+            return time.localtime()
+
+        return item.pub_date
+
+    def process(self, source_id: str | None, items: list[Item]) -> list[Item]:
+        print(f"[ConcatPlugin#{self.id}] process called, n={len(items)}")
+        if source_id is None:
+            raise Exception(f"[ConcatPlugin#{self.id}] can not be scheduled")
+
+        plugin_state_q = Query().plugin_id == self.id
+        _d: Any = database_manager.plugin_states.get(plugin_state_q)  # type: ignore
+        data: dict[str, Any] = (
+            _d if _d is not None else {"plugin_id": self.id, "state": {}}
+        )
+        state = data["state"]
+
+        items_as_dicts = list(map(item_to_dict, items))
+        state[source_id] = items_as_dicts
+
+        database_manager.plugin_states.upsert(  # type: ignore
+            {"plugin_id": self.id, "state": state}, plugin_state_q
+        )
+
+        aggregated_item_dicts: list[ItemDict] = []
+        for data_source_id in state:
+            item_dicts = state[data_source_id]
+            aggregated_item_dicts += item_dicts
+
+        ret_items = list(map(dict_to_item, aggregated_item_dicts))
+        ret = sorted(ret_items, key=self.item_sort_key)
+
+        print(f"[ConcatPlugin#{self.id}] process returning items, n={len(ret)}")
+        return ret