From f21d6805048f4215b8be459e7b8c427ee2f4905a Mon Sep 17 00:00:00 2001
From: Robbie McKinstry <robbie@wack.run>
Date: Tue, 22 Jul 2025 12:56:45 -0400
Subject: [PATCH 1/2] Debugging missing SHA

---
 .github/workflows/on-push.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/on-push.yml b/.github/workflows/on-push.yml
index 59d7b4e..fcb31b0 100644
--- a/.github/workflows/on-push.yml
+++ b/.github/workflows/on-push.yml
@@ -13,6 +13,6 @@ jobs:
         uses: actions/checkout@v4
       
       - name: Test MultiTool Action
-        uses: wack/multitool-action@${{ github.sha }}
+        uses: "wack/multitool-action@${{ env.GITHUB_SHA }}"
         with:
-          input-string: "test input"
\ No newline at end of file
+          input-string: "test input"

From daf1adabaabac21d86992e3ee0d074f3e2863396 Mon Sep 17 00:00:00 2001
From: Robbie McKinstry <robbie@wack.run>
Date: Tue, 22 Jul 2025 12:58:05 -0400
Subject: [PATCH 2/2] Test login.

---
 .github/workflows/on-push.yml | 34 +++++++++++++++++++---
 action.yml                    | 53 ++++++++++++++++++++++++++++++-----
 2 files changed, 76 insertions(+), 11 deletions(-)

diff --git a/.github/workflows/on-push.yml b/.github/workflows/on-push.yml
index fcb31b0..55bbbae 100644
--- a/.github/workflows/on-push.yml
+++ b/.github/workflows/on-push.yml
@@ -11,8 +11,34 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-      
-      - name: Test MultiTool Action
-        uses: "wack/multitool-action@${{ env.GITHUB_SHA }}"
+
+      # Test whether the Action installs correctly.
+      - name: Install MultiTool via Action
+        uses: "./"
+        with:
+          install-only: true
+          version: "v0.3.0"
+
+      - name: "Test CLI is installed"
+        run: "which multi"
+
+      - name: "Test CLI help works"
+        run: "multi -h"
+
+      - name: "Test CLI version matches"
+        run: |
+          if [ $(multi version) = "v0.3.0" ]; then
+            echo "Version is correct."
+          else
+            echo "Version is incorrect."
+            exit 1
+          fi
+       
+      # Test whether the Action logs in correctly.
+      - name: Login
+        uses: "./"
         with:
-          input-string: "test input"
+          email: ${{ secrets.MULTITOOL_QA_EMAIL }}
+          password: ${{ secrets.MULTITOOL_QA_PASSWORD }}
+          dry-run: true
+          cache-binary: false
diff --git a/action.yml b/action.yml
index 9f03f6e..afbb5cb 100644
--- a/action.yml
+++ b/action.yml
@@ -1,10 +1,37 @@
 name: 'MultiTool'
+# TODO: Add an action description.
+# TODO: Run Taplo YAML checker over this file.
+# TODO: Change single quotes to double quotes
 description: ''
 
 inputs:
-  input-string:
-    description: 'Input string'
-    required: true
+  version:
+    description: 'Version string (e.g. v0.3.0). If none provided, defaults to latest'
+    required: false
+    default: "latest"
+
+  install-only:
+    description: "Whether to install the CLI and then exit"
+    required: false
+    default: false
+
+  dry-run:
+    description: "Skips running `multi run`. Useful for testing login credentials."
+    required: false
+    default: false
+
+  email:
+    description: "An email address to use when logging in."
+    required: false
+
+  password:
+    description: "The password to use when logging in. NB: Pass this as an environment secret."
+    required: false
+
+  cache-binary:
+    description: "When enabled (default), the `multi` binary will be added to the Actions cache and reused between runs"
+    required: false
+    default: true
 
 outputs:
   output-string:
@@ -14,8 +41,20 @@ outputs:
 runs:
   using: 'composite'
   steps:
-    - name: 'MultiTool Step'
-      id: multitool-step
+    - name: Install the MultiTool CLI
+      uses: jaxxstorm/action-install-gh-release@v2.1.0
+      with: # Grab the latest version
+        repo: wack/multitool
+        tag: ${{ inputs.version }}
+        cache: ${{ inputs.cache-binary && 'enable' }}
+
+    - name: Login
+      shell: bash
+      if: ${{ !inputs.install-only }}
+      run: "multi login --enable-colors=always --email=${{ inputs.email }} --password=${{ inputs.password }}"
+
+    - name: Multi Run
       shell: bash
-      run: |
-        echo "result=${{ inputs.input-string }}" >> $GITHUB_OUTPUT
\ No newline at end of file
+      if: ${{ !(inputs.install-only || inputs.dry-run) }}
+      run: "multi run --enable-colors=always"
+