From afcc8d27acad6c0965ea0878304b1a89db450d09 Mon Sep 17 00:00:00 2001
From: Cedric Deege <cedric.deege@gmx.de>
Date: Mon, 2 Oct 2023 12:07:48 +0200
Subject: [PATCH] feat: Automatically detect nested functions organised in
 folders.

---
 src/discoverer/discoverer.spec.ts                |  1 +
 src/discoverer/discoverer.ts                     | 10 ++++++++--
 test-e2e/index.ts                                |  3 ++-
 test-e2e/nestedFunctions/deeplyNested.trigger.ts |  1 +
 test-e2e/nestedFunctions/index.ts                |  1 +
 5 files changed, 13 insertions(+), 3 deletions(-)
 create mode 100644 test-e2e/nestedFunctions/deeplyNested.trigger.ts
 create mode 100644 test-e2e/nestedFunctions/index.ts

diff --git a/src/discoverer/discoverer.spec.ts b/src/discoverer/discoverer.spec.ts
index 3e7c95b..8047dd8 100644
--- a/src/discoverer/discoverer.spec.ts
+++ b/src/discoverer/discoverer.spec.ts
@@ -8,6 +8,7 @@ describe("Function Discovery", function () {
             firstFunction: "test-e2e/firstFunctions/function.ts",
             secondFunctionHttpTrigger: "test-e2e/secondFunction/http.trigger.ts",
             secondFunctionPubSub: "test-e2e/secondFunction/pubsub.trigger.ts",
+            "nestedFunctions.deeplyNestedFunction": "test-e2e/nestedFunctions/deeplyNested.trigger.ts",
         };
         const indexFilePath = "test-e2e/index.ts";
         const result = getFirebaseFunctionsAndPaths(indexFilePath);
diff --git a/src/discoverer/discoverer.ts b/src/discoverer/discoverer.ts
index e9a42ce..e898826 100644
--- a/src/discoverer/discoverer.ts
+++ b/src/discoverer/discoverer.ts
@@ -28,8 +28,14 @@ const getExports = (indexFilePath = "src/index.ts"): Record<string, string> => {
         }
 
         const filePath = declaration.getSourceFile().getFilePath();
-
-        exports[exportName] = relative(cwd(), filePath);
+        if (declaration.getSymbolOrThrow().getExports().length > 0) {
+            const nestedExports = getExports(filePath);
+            for (const [nestedExportName, nestedFilePath] of Object.entries(nestedExports)) {
+                exports[`${exportName}.${nestedExportName}`] = nestedFilePath;
+            }
+        } else {
+            exports[exportName] = relative(cwd(), filePath);
+        }
     }
 
     return exports;
diff --git a/test-e2e/index.ts b/test-e2e/index.ts
index bf0caf0..8786630 100644
--- a/test-e2e/index.ts
+++ b/test-e2e/index.ts
@@ -1,4 +1,5 @@
 import { firstFunction } from "./firstFunctions/function";
 import { secondFunctionHttpTrigger, secondFunctionPubSub } from "./secondFunction";
+import * as nestedFunctions from "./nestedFunctions";
 
-export { firstFunction, secondFunctionHttpTrigger, secondFunctionPubSub };
+export { firstFunction, secondFunctionHttpTrigger, secondFunctionPubSub, nestedFunctions };
diff --git a/test-e2e/nestedFunctions/deeplyNested.trigger.ts b/test-e2e/nestedFunctions/deeplyNested.trigger.ts
new file mode 100644
index 0000000..9a1730a
--- /dev/null
+++ b/test-e2e/nestedFunctions/deeplyNested.trigger.ts
@@ -0,0 +1 @@
+export function deeplyNestedFunction() {}
diff --git a/test-e2e/nestedFunctions/index.ts b/test-e2e/nestedFunctions/index.ts
new file mode 100644
index 0000000..97ad447
--- /dev/null
+++ b/test-e2e/nestedFunctions/index.ts
@@ -0,0 +1 @@
+export { deeplyNestedFunction } from "./deeplyNested.trigger";