feat: 🚧 add libravatar options

.env.example

@@ -26,6 +26,19 @@ IMAGES__DEFAULT_RESOLUTION=512
 # Comma-separated list of permitted image mimetypes
 IMAGES__ALLOWED_INPUT_FORMATS=image/jpg,image/jpeg,image/png,image/webp,image/gif
 
+# Whether or not to enable the libravatar API. Default false.
+LIBRAVATAR__ENABLED=false
+
+# Either jpeg or png. The type of image the libravatar API serves. Default png.
+LIBRAVATAR__FORMAT=png
+
+# What to do when libravatar requests a resolution that is not a valid output resolution. Default round.
+# Modes:
+# round - Round to the nearest image size.
+# nocache - Render the image at the requested size without saving it to disk.
+# cache - Render the image at the requested size and save it to disk.
+LIBRAVATAR__GENERATION_MODE=round
+
 # Prisma database URL
 DATABASE_URL=file:../.data/data.db
 

src/lib/configuration.ts

@@ -1,32 +1,83 @@
-import Sharp, { type FormatEnum } from 'sharp';
+import Sharp, { type FormatEnum } from "sharp"
-import { env } from '$env/dynamic/private';
+import { env } from "$env/dynamic/private"
+const stbool = (s: string) => {
+    switch (s.toLowerCase()) {
+        case "1":
+        case "y":
+        case "yes":
+        case "true":
+            return true
+
+        case "0":
+        case "n":
+        case "no":
+        case "false":
+            return false
+
+        default:
+            return undefined
+    }
+}
 const configuration = {
     oauth2: {
         endpoints: {
             authenticate: env.OAUTH2__AUTHENTICATE!,
             logout: env.OAUTH2__LOGOUT,
-			token: env.OAUTH2__GET_TOKEN!
+            token: env.OAUTH2__GET_TOKEN!,
         },
         client: {
             id: env.OAUTH2__CLIENT_ID!,
             secret: env.OAUTH2__CLIENT_SECRET!,
-			scopes: env.OAUTH2__SCOPES!
+            scopes: env.OAUTH2__SCOPES!,
-		}
+        },
     },
     userinfo: {
         route: env.USERINFO__ROUTE!,
-		identifier: env.USERINFO__IDENTIFIER!
+        identifier: env.USERINFO__IDENTIFIER!,
     },
     images: {
-		permitted_input: (env.ALLOWED_TYPES || env.IMAGES__ALLOWED_INPUT_FORMATS)?.split(',') || [],
+        permitted_input:
-		default_resolution: parseInt((env.IMAGES__DEFAULT_RESOLUTION || '').toString(), 10) || 512,
+            (env.ALLOWED_TYPES || env.IMAGES__ALLOWED_INPUT_FORMATS)?.split(
+                ","
+            ) || [],
+        default_resolution:
+            parseInt((env.IMAGES__DEFAULT_RESOLUTION || "").toString(), 10) ||
+            512,
         extra_output_types:
-			(env.IMAGES__EXTRA_OUTPUT_FORMATS?.split(',').filter(
+            (env.IMAGES__EXTRA_OUTPUT_FORMATS?.split(",").filter(
-				(e) => e in Sharp.format
+                e => e in Sharp.format
             ) as (keyof FormatEnum)[]) || [],
-		output_resolutions: env.IMAGES__OUTPUT_RESOLUTIONS?.split(',').map((e) => parseInt(e, 10)) || [
+        output_resolutions: env.IMAGES__OUTPUT_RESOLUTIONS?.split(",").map(e =>
-			1024, 512, 256, 128, 64, 32
+            parseInt(e, 10)
-		]
+        ) || [1024, 512, 256, 128, 64, 32],
+    },
+    ...(stbool(env.LIBRAVATAR__ENABLED) ?? false
+        ? {
+              libravatar: {
+                  output_format: (["png", "jpeg"].includes(
+                      env.LIBRAVATAR__FORMAT
+                  )
+                      ? env.LIBRAVATAR__FORMAT
+                      : "jpeg") as keyof FormatEnum,
+                  resize_mode: ["round", "nocache", "cache"].includes(
+                      env.LIBRAVATAR__GENERATION_MODE
+                  )
+                      ? env.LIBRAVATAR__GENERATION_MODE
+                      : "round",
+              },
           }
-};
+        : {}),
-export default configuration;
+}
+
+// add extra output format if required
+if (
+    configuration.libravatar &&
+    !configuration.images.extra_output_types.includes(
+        configuration.libravatar.output_format
+    )
+)
+    configuration.images.extra_output_types.push(
+        configuration.libravatar.output_format
+    )
+
+export default configuration