e

M3U8/scrapers/utils/caching.py

@@ -0,0 +1,57 @@
+import json
+from pathlib import Path
+
+from .config import Time
+
+
+class Cache:
+    def __init__(self, file: str, exp: int | float) -> None:
+        self.file = Path(__file__).parent.parent / "caches" / file
+        self.exp = exp
+        self.now_ts = Time.now().timestamp()
+
+    def is_fresh(self, entry: dict) -> bool:
+        ts: float | int = entry.get("timestamp", Time.default_8())
+
+        dt_ts = Time.clean(Time.from_ts(ts)).timestamp()
+
+        return self.now_ts - dt_ts < self.exp
+
+    def write(self, data: dict) -> None:
+        self.file.parent.mkdir(parents=True, exist_ok=True)
+
+        self.file.write_text(
+            json.dumps(
+                data,
+                indent=2,
+                ensure_ascii=False,
+            ),
+            encoding="utf-8",
+        )
+
+    def load(
+        self,
+        per_entry: bool = True,
+        index: int | None = None,
+    ) -> dict[str, dict[str, str | float]]:
+
+        try:
+            data: dict = json.loads(self.file.read_text(encoding="utf-8"))
+        except (FileNotFoundError, json.JSONDecodeError):
+            return {}
+
+        if per_entry:
+            return {k: v for k, v in data.items() if self.is_fresh(v)}
+
+        if index:
+            ts: float | int = data[index].get("timestamp", Time.default_8())
+
+        else:
+            ts: float | int = data.get("timestamp", Time.default_8())
+
+        dt_ts = Time.clean(Time.from_ts(ts)).timestamp()
+
+        return data if self.is_fresh({"timestamp": dt_ts}) else {}
+
+
+__all__ = ["Cache"]