Merge pull request #2281 from v1xingyue/character-from-url

feat: support load character from  character_url

Author: wtfsayo

.env.example

@@ -14,6 +14,10 @@ SERVER_PORT=3000
 SUPABASE_URL=
 SUPABASE_ANON_KEY=
 
+# Remote character url (optional)
+REMOTE_CHARACTER_URL=
+
+
 ###############################
 #### Client Configurations ####
 ###############################

agent/src/index.ts

@@ -184,12 +184,17 @@ function mergeCharacters(base: Character, child: Character): Character {
     };
     return mergeObjects(base, child);
 }
-async function loadCharacter(filePath: string): Promise<Character> {
-    const content = tryLoadFile(filePath);
-    if (!content) {
-        throw new Error(`Character file not found: ${filePath}`);
-    }
-    let character = JSON.parse(content);
+
+async function loadCharacterFromUrl(url: string): Promise<Character> {
+    const response = await fetch(url);
+    const character = await response.json();
+    return jsonToCharacter(url, character);
+}
+
+async function jsonToCharacter(
+    filePath: string,
+    character: any
+): Promise<Character> {
     validateCharacterConfig(character);
 
     // .id isn't really valid
@@ -227,6 +232,15 @@ async function loadCharacter(filePath: string): Promise<Character> {
     return character;
 }
 
+async function loadCharacter(filePath: string): Promise<Character> {
+    const content = tryLoadFile(filePath);
+    if (!content) {
+        throw new Error(`Character file not found: ${filePath}`);
+    }
+    let character = JSON.parse(content);
+    return jsonToCharacter(filePath, character);
+}
+
 export async function loadCharacters(
     charactersArg: string
 ): Promise<Character[]> {
@@ -305,6 +319,16 @@ export async function loadCharacters(
     }
 
     if (loadedCharacters.length === 0) {
+        if (
+            process.env.REMOTE_CHARACTER_URL != "" &&
+            process.env.REMOTE_CHARACTER_URL.startsWith("http")
+        ) {
+            const character = await loadCharacterFromUrl(
+                process.env.REMOTE_CHARACTER_URL
+            );
+            loadedCharacters.push(character);
+        }
+
         elizaLogger.info("No characters found, using default character");
         loadedCharacters.push(defaultCharacter);
     }
@@ -1116,14 +1140,17 @@ startAgents().catch((error) => {
 });
 
 // Prevent unhandled exceptions from crashing the process if desired
-if (process.env.PREVENT_UNHANDLED_EXIT && parseBooleanFromText(process.env.PREVENT_UNHANDLED_EXIT)) {
+if (
+    process.env.PREVENT_UNHANDLED_EXIT &&
+    parseBooleanFromText(process.env.PREVENT_UNHANDLED_EXIT)
+) {
     // Handle uncaught exceptions to prevent the process from crashing
-    process.on('uncaughtException', function(err) {
+    process.on("uncaughtException", function (err) {
         console.error("uncaughtException", err);
     });
 
     // Handle unhandled rejections to prevent the process from crashing
-    process.on('unhandledRejection', function(err) {
+    process.on("unhandledRejection", function (err) {
         console.error("unhandledRejection", err);
     });
 }