From 7e9161de81c3d0934f9ad3a26ef2e4f75015dd84 Mon Sep 17 00:00:00 2001
From: Vahila <70003902+Vahila@users.noreply.github.com>
Date: Thu, 13 Feb 2025 13:58:30 +0530
Subject: [PATCH 1/3] Add check if mpm already exists

---
 src/mpm.ts | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/src/mpm.ts b/src/mpm.ts
index 5d3efec..24ecd12 100644
--- a/src/mpm.ts
+++ b/src/mpm.ts
@@ -4,6 +4,7 @@ import * as exec from "@actions/exec";
 import * as tc from "@actions/tool-cache";
 import {rmRF} from "@actions/io";
 import * as path from "path";
+import * as fs from 'fs';
 import * as matlab from "./matlab";
 import properties from "./properties.json";
 
@@ -37,15 +38,21 @@ export async function setup(platform: string, architecture: string): Promise<str
         return Promise.reject(Error("Unable to find runner temporary directory."));
     }
     let mpmDest = path.join(runner_temp, `mpm${ext}`);
-    let mpm: string = await tc.downloadTool(mpmUrl, mpmDest);
+    if (!fs.existsSync(mpmDest)){
+        let mpm: string = await tc.downloadTool(mpmUrl, mpmDest);
 
-    if (platform !== "win32") {
-        const exitCode = await exec.exec(`chmod +x "${mpm}"`);
-        if (exitCode !== 0) {
-            return Promise.reject(Error("Unable to set up mpm."));
+        if (platform !== "win32") {
+            const exitCode = await exec.exec(`chmod +x "${mpm}"`);
+            if (exitCode !== 0) {
+                return Promise.reject(Error("Unable to set up mpm."));
+            }
         }
+
+        return mpm;
+    }
+    else{
+        return mpmDest 
     }
-    return mpm
 }
 
 export async function install(mpmPath: string, release: matlab.Release, products: string[], destination: string) {

From 2b689a9925826239ebaec82eba9fd6f3be56f302 Mon Sep 17 00:00:00 2001
From: Vahila <70003902+Vahila@users.noreply.github.com>
Date: Thu, 13 Feb 2025 13:59:15 +0530
Subject: [PATCH 2/3] Add test for calling setup-matlab twice

---
 .github/workflows/bat.yml | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/.github/workflows/bat.yml b/.github/workflows/bat.yml
index 350a91f..69f0ba6 100644
--- a/.github/workflows/bat.yml
+++ b/.github/workflows/bat.yml
@@ -89,3 +89,12 @@ jobs:
         with:
           release: ${{ matrix.release }}
           products: ${{ matrix.products }}
+      - name: Call setup MATLAB again with different release # should not error as in issue 130
+        uses: ./
+        with:
+          release: R2023b
+      - name: Check MATLAB version
+        uses: matlab-actions/run-command@v2
+        with:
+          command: matlabVer = ver('matlab'); assert(strcmp(matlabVer.Release,'(R2023b)'));
+  
\ No newline at end of file

From f17c71c91e33a0b2f311853cfdc64c4da43b20c9 Mon Sep 17 00:00:00 2001
From: Vahila <70003902+Vahila@users.noreply.github.com>
Date: Tue, 18 Feb 2025 14:36:32 +0530
Subject: [PATCH 3/3] Delete mpm file if it exists

---
 src/mpm.ts | 26 +++++++++++++++-----------
 1 file changed, 15 insertions(+), 11 deletions(-)

diff --git a/src/mpm.ts b/src/mpm.ts
index 24ecd12..ccd502e 100644
--- a/src/mpm.ts
+++ b/src/mpm.ts
@@ -38,21 +38,25 @@ export async function setup(platform: string, architecture: string): Promise<str
         return Promise.reject(Error("Unable to find runner temporary directory."));
     }
     let mpmDest = path.join(runner_temp, `mpm${ext}`);
-    if (!fs.existsSync(mpmDest)){
-        let mpm: string = await tc.downloadTool(mpmUrl, mpmDest);
 
-        if (platform !== "win32") {
-            const exitCode = await exec.exec(`chmod +x "${mpm}"`);
-            if (exitCode !== 0) {
-                return Promise.reject(Error("Unable to set up mpm."));
-            }
+    // Delete mpm file if it exists
+    if (fs.existsSync(mpmDest)) {
+        try {
+            fs.unlinkSync(mpmDest);
+        } catch (err) {
+            return Promise.reject(Error(`Failed to delete existing mpm file: ${err}`));
         }
-
-        return mpm;
     }
-    else{
-        return mpmDest 
+
+    let mpm: string = await tc.downloadTool(mpmUrl, mpmDest);
+
+    if (platform !== "win32") {
+        const exitCode = await exec.exec(`chmod +x "${mpm}"`);
+        if (exitCode !== 0) {
+            return Promise.reject(Error("Unable to set up mpm."));
+        }
     }
+    return mpm
 }
 
 export async function install(mpmPath: string, release: matlab.Release, products: string[], destination: string) {