feat(core): allow sending fully custom payloads

packages/tl/README.md

@@ -2,7 +2,7 @@
 
 TL schema and related utils used for mtcute.
 
-Generated from TL layer **182** (last updated on 25.06.2024).
+Generated from TL layer **182** (last updated on 26.06.2024).
 
 ## About
 

packages/tl/data/custom.tl

@@ -5,3 +5,10 @@
 mtcute.dummyUpdate pts:int pts_count:int channel_id:int53 = Update;
 mtcute.dummyInputPeerMinUser user_id:int = InputPeer;
 mtcute.dummyInputPeerMinChannel channel_id:int = InputPeer;
+
+
+---functions---
+// temporary solution to allow users to call arbitrary methods not present in the schema,
+// without having to override client's schema readers/writers map.
+// will become redundant after esm tl rewrite
+mtcute.customMethod bytes:bytes = bytes;

packages/tl/scripts/gen-code.ts

@@ -28,7 +28,8 @@ async function generateTypings(apiSchema: TlFullSchema, apiLayer: number, mtpSch
     await writeFile(OUT_TYPINGS_JS_FILE, ESM_PRELUDE + apiJs + '\n\n' + mtpJs)
 }
 
-const removeInternalEntries = (entries: TlEntry[]) => entries.filter((it) => !it.name.startsWith('mtcute.'))
+const removeInternalEntries = (entries: TlEntry[]) =>
+    entries.filter((it) => !it.name.startsWith('mtcute.') || it.name === 'mtcute.customMethod')
 
 async function generateReaders(apiSchema: TlFullSchema, mtpSchema: TlFullSchema) {
     console.log('Generating readers...')
@@ -56,6 +57,18 @@ async function generateWriters(apiSchema: TlFullSchema, mtpSchema: TlFullSchema)
         includeStaticSizes: true,
     })
 
+    // for mtcute.customMethod we want to generate a writer that writes obj.bytes directly
+    const newCode = code.replace(
+        /^('mtcute.customMethod':function\(w,v\){)w.uint\(2440218877\);w.bytes\(h\(v,'bytes'\)\)/m,
+        "$1w.raw(h(v,'bytes'))",
+    )
+
+    if (newCode === code) {
+        throw new Error('Failed to replace customMethod writer')
+    }
+
+    code = newCode
+
     code += '\nexports.__tlWriterMap = m;'
 
     await writeFile(OUT_WRITERS_FILE, ESM_PRELUDE + code)