refactor(cli): tidy config schema path helpers

src/cli/config-cli.test.ts

@@ -181,6 +181,27 @@ function createPluginMetadataSnapshot(
   };
 }
 
+function configRecordWithRequireMentionSchema() {
+  return {
+    type: "object",
+    additionalProperties: {
+      type: "object",
+      properties: {
+        requireMention: { type: "boolean" },
+      },
+    },
+  };
+}
+
+function configChannelSchemaWithRecord(recordKey: string) {
+  return {
+    type: "object",
+    properties: {
+      [recordKey]: configRecordWithRequireMentionSchema(),
+    },
+  };
+}
+
 function setConfigMutationShapeSchema() {
   mockReadBestEffortRuntimeConfigSchema.mockResolvedValue({
     schema: {
@@ -205,34 +226,8 @@ function setConfigMutationShapeSchema() {
         channels: {
           type: "object",
           properties: {
-            discord: {
-              type: "object",
-              properties: {
-                guilds: {
-                  type: "object",
-                  additionalProperties: {
-                    type: "object",
-                    properties: {
-                      requireMention: { type: "boolean" },
-                    },
-                  },
-                },
-              },
-            },
-            telegram: {
-              type: "object",
-              properties: {
-                groups: {
-                  type: "object",
-                  additionalProperties: {
-                    type: "object",
-                    properties: {
-                      requireMention: { type: "boolean" },
-                    },
-                  },
-                },
-              },
-            },
+            discord: configChannelSchemaWithRecord("guilds"),
+            telegram: configChannelSchemaWithRecord("groups"),
           },
         },
       },

src/cli/config-cli.ts

@@ -488,7 +488,14 @@ function schemaTypes(schema: JsonSchemaRecord): Set<string> {
   return new Set();
 }
 
-function schemaAlternatives(schema: JsonSchemaRecord): JsonSchemaRecord[] {
+function schemaAlternatives(
+  schema: JsonSchemaRecord,
+  seen = new Set<JsonSchemaRecord>(),
+): JsonSchemaRecord[] {
+  if (seen.has(schema)) {
+    return [];
+  }
+  seen.add(schema);
   const alternatives: JsonSchemaRecord[] = [schema];
   for (const key of ["anyOf", "oneOf", "allOf"] as const) {
     const entries = schema[key];
@@ -497,7 +504,7 @@ function schemaAlternatives(schema: JsonSchemaRecord): JsonSchemaRecord[] {
     }
     for (const entry of entries) {
       if (isSchemaRecord(entry)) {
-        alternatives.push(...schemaAlternatives(entry));
+        alternatives.push(...schemaAlternatives(entry, seen));
       }
     }
   }
@@ -505,7 +512,11 @@ function schemaAlternatives(schema: JsonSchemaRecord): JsonSchemaRecord[] {
 }
 
 function schemaLooksArray(schema: JsonSchemaRecord): boolean {
-  return schemaTypes(schema).has("array") || isSchemaRecord(schema.items);
+  return (
+    schemaTypes(schema).has("array") ||
+    isSchemaRecord(schema.items) ||
+    Array.isArray(schema.items)
+  );
 }
 
 function schemaLooksObject(schema: JsonSchemaRecord): boolean {
@@ -522,8 +533,14 @@ function propertySchema(schema: JsonSchemaRecord, segment: PathSegment): JsonSch
   const schemas: JsonSchemaRecord[] = [];
   for (const alternative of schemaAlternatives(schema)) {
     if (schemaLooksArray(alternative)) {
-      if (isIndexSegment(segment) && isSchemaRecord(alternative.items)) {
-        schemas.push(alternative.items);
+      if (isIndexSegment(segment)) {
+        const index = Number.parseInt(segment, 10);
+        const indexedItem = Array.isArray(alternative.items)
+          ? alternative.items[index]
+          : alternative.items;
+        if (isSchemaRecord(indexedItem)) {
+          schemas.push(indexedItem);
+        }
       }
       continue;
     }