move imgserver to app/api folder

+ add sqlite methods to configure custom root directories
+ add sqlite.settings module
+ remove date and app name from logger messages
+ add api route to browse directories

app/api/imgserver.py

@@ -0,0 +1,114 @@
+import os
+from pathlib import Path
+
+from flask import Blueprint, send_from_directory
+
+imgbp = Blueprint("imgserver", __name__, url_prefix="/img")
+SUPPORTED_IMAGES = (".jpg", ".png", ".webp", ".jpeg")
+
+HOME = os.path.expanduser("~")
+
+APP_DIR = Path(HOME) / ".swing"
+IMG_PATH = APP_DIR / "images"
+ASSETS_PATH = APP_DIR / "assets"
+
+THUMB_PATH = IMG_PATH / "thumbnails"
+LG_THUMB_PATH = THUMB_PATH / "large"
+SM_THUMB_PATH = THUMB_PATH / "small"
+
+ARTIST_PATH = IMG_PATH / "artists"
+ARTIST_LG_PATH = ARTIST_PATH / "large"
+ARTIST_SM_PATH = ARTIST_PATH / "small"
+
+PLAYLIST_PATH = IMG_PATH / "playlists"
+
+
+@imgbp.route("/")
+def hello():
+    return "<h1>Image Server</h1>"
+
+
+def send_fallback_img(filename: str = "default.webp"):
+    img = ASSETS_PATH / filename
+
+    if not img.exists():
+        return "", 404
+
+    return send_from_directory(ASSETS_PATH, filename)
+
+
+@imgbp.route("/t/<imgpath>")
+def send_lg_thumbnail(imgpath: str):
+    fpath = LG_THUMB_PATH / imgpath
+
+    if fpath.exists():
+        return send_from_directory(LG_THUMB_PATH, imgpath)
+
+    return send_fallback_img()
+
+
+@imgbp.route("/t/s/<imgpath>")
+def send_sm_thumbnail(imgpath: str):
+    fpath = SM_THUMB_PATH / imgpath
+
+    if fpath.exists():
+        return send_from_directory(SM_THUMB_PATH, imgpath)
+
+    return send_fallback_img()
+
+
+@imgbp.route("/a/<imgpath>")
+def send_lg_artist_image(imgpath: str):
+    fpath = ARTIST_LG_PATH / imgpath
+
+    if fpath.exists():
+        return send_from_directory(ARTIST_LG_PATH, imgpath)
+
+    return send_fallback_img("artist.webp")
+
+
+@imgbp.route("/a/s/<imgpath>")
+def send_sm_artist_image(imgpath: str):
+    fpath = ARTIST_SM_PATH / imgpath
+
+    if fpath.exists():
+        return send_from_directory(ARTIST_SM_PATH, imgpath)
+
+    return send_fallback_img("artist.webp")
+
+
+@imgbp.route("/p/<imgpath>")
+def send_playlist_image(imgpath: str):
+    fpath = PLAYLIST_PATH / imgpath
+
+    if fpath.exists():
+        return send_from_directory(PLAYLIST_PATH, imgpath)
+
+    return send_fallback_img("playlist.svg")
+
+
+# @app.route("/raw")
+# @app.route("/raw/<path:imgpath>")
+# def send_from_filepath(imgpath: str = ""):
+#     imgpath = "/" + imgpath
+#     filename = path.basename(imgpath)
+
+#     def verify_is_image():
+#         _, ext = path.splitext(filename)
+#         return ext in SUPPORTED_IMAGES
+
+#     verified = verify_is_image()
+
+#     if not verified:
+#         return imgpath, 404
+
+#     exists = path.exists(imgpath)
+
+#     if verified and exists:
+#         return send_from_directory(path.dirname(imgpath), filename)
+
+#     return imgpath, 404
+
+
+# def serve_imgs():
+#     app.run(threaded=True, port=1971, host="0.0.0.0", debug=True)