Add image caching logic for show posters

ikinuki_client/__main__.py

@@ -1,8 +1,9 @@
 from typing import Type
 
 import os
+import shutil
 import sys
-from urllib import parse
+import urllib.parse
 
 from collections import defaultdict
 
@@ -14,7 +15,6 @@ from PyQt5.QtCore import QObject, pyqtProperty, pyqtSlot
 
 from PyQt5.QtGui import QImage
 
-
 from .qtmpv import MpvObject
 
 import requests
@@ -92,13 +92,13 @@ class ProviderImageProvider(QQuickImageProvider):
 
 
 def getUrl(base: str, path: str) -> dict:
-    url: str = parse.urljoin(base, path)
+    url: str = urllib.parse.urljoin(base, path)
     r: requests.Response = requests.get(url)
     return r.json()
 
 
 class Provider(QObject):
-    def __init__(self, url: str, parent=None):
+    def __init__(self, url: str, data_dir: str, parent=None):
         super().__init__(parent)
         self.url: str = url
 
@@ -108,17 +108,44 @@ class Provider(QObject):
             describe["icon"]
         )
 
-        def default_val():
-            return []
-
+        # Create dictionary of show episodes
         episodes: dict = getUrl(self.url, "episodes")
-        _episodes: defaultdict[str, list[Episode]] = defaultdict(default_val)
+        _episodes: defaultdict[str, list[Episode]] = defaultdict(lambda: [])
 
         for e in episodes["episodes"]:
             _episodes[e["ShowTitle"]].append(Episode(e))
 
         shows: dict = getUrl(self.url, "shows")
 
+        # Create image_cache directory
+        provider_data_dir: str = os.path.join(
+            data_dir, "image_cache", "providers", self._name
+        )
+        os.makedirs(provider_data_dir, exist_ok=True)
+
+        # Cache show posters
+        for s in shows["data"]:
+            # Get local cache path
+            poster_url: str = s["poster"]
+            poster_path: str = urllib.parse.urlparse(poster_url).path
+            poster_ext: str = os.path.splitext(poster_path)[1]
+            download_path: str = os.path.join(
+                provider_data_dir, str(s["id"]) + poster_ext
+            )
+
+            # Download poster
+            try:
+                with open(download_path, "xb") as f:
+                    r = requests.get(poster_url, stream=True)
+                    if r.status_code == 200:
+                        r.raw.decode_content = True
+                        shutil.copyfileobj(r.raw, f)
+            except FileExistsError:
+                pass
+
+            # Overwrite poster URL with local path
+            s["poster"] = download_path
+
         self._shows: dict[int, Show] = {
             e["id"]: Show(e, _episodes[e["title"]]) for e in shows["data"]
         }
@@ -161,8 +188,8 @@ class Provider(QObject):
 
 
 class DataSource:
-    def __init__(self, providers=[]):
-        self.providers: list[Provider] = [Provider(url) for url in providers]
+    def __init__(self, providers: list[str], data_dir: str):
+        self.providers: list[Provider] = [Provider(url, data_dir) for url in providers]
 
 
 def DatabaseType(data_source) -> Type:
@@ -204,6 +231,17 @@ def load_config() -> list[str]:
     return [f'http://{b["address"]}:{b["port"]}/' for b in config["backends"]]
 
 
+def get_data_dir() -> str:
+    try:
+        data_dir: str = os.path.join(os.environ["XDG_DATA_HOME"], "ikinuki")
+    except:
+        data_dir: str = os.path.join(os.environ["HOME"], ".local", "share", "ikinuki")
+
+    os.makedirs(data_dir, exist_ok=True)
+
+    return data_dir
+
+
 def main():
     app = QApplication(sys.argv)
 
@@ -218,7 +256,9 @@ def main():
         print(f"ERROR: Could not load config file: {repr(e)}")
         sys.exit(-1)
 
-    data_source = DataSource(backends)
+    data_dir: str = get_data_dir()
+
+    data_source = DataSource(backends, data_dir)
 
     qmlRegisterType(DatabaseType(data_source), "Ikinuki.Client", 1, 0, "Database")