Caching .terraform (#56)

* Caching .terraform

* Update action.yml

* Use cloudposse-github-actions/install-gh-releases

* Consolidate settings action

action.yml

@@ -51,6 +51,11 @@ outputs:
 runs:
   using: "composite"
   steps:
+    - name: Install Node
+      uses: actions/setup-node@v4
+      with:
+        node-version: 20
+
     - name: Checkout
       uses: actions/checkout@v4
 
@@ -87,34 +92,38 @@ runs:
         terraform_version: ${{ steps.config.outputs.terraform-version }}
         terraform_wrapper: false
 
-    - name: Install OpenTofu
-      if: ${{ steps.config.outputs.opentofu-version != '' && steps.config.outputs.opentofu-version != 'null' }}
-      uses: opentofu/setup-opentofu@v1
+    - name: Install Dependencies
+      uses: cloudposse-github-actions/install-gh-releases@v1
       with:
-        tofu_version: ${{ steps.config.outputs.opentofu-version }}
-        tofu_wrapper: false
-
-    - name: Install Node
-      uses: actions/setup-node@v4
-      with:
-        node-version: 20
-
-    - name: Filter Atmos Settings Value
+        cache: true
+        config: |-
+          opentofu/opentofu: 
+            tag: ${{ startsWith(steps.config.outputs.opentofu-version, 'v') && steps.config.outputs.opentofu-version || format('v{0}', steps.config.outputs.opentofu-version) }}
+            skip: ${{ steps.config.outputs.opentofu-version == '' || steps.config.outputs.opentofu-version == 'null' }}
+          suzuki-shunsuke/tfcmt: v4.11.0
+          terraform-docs/terraform-docs: v0.18.0
+
+    - name: Get atmos settings
       uses: cloudposse/github-action-atmos-get-setting@v1
-      id: atmos-github-actions-enabled
+      id: component
       with:
-        component: ${{ inputs.component }}
-        stack: ${{ inputs.stack }}
-        settings-path: settings.github.actions_enabled
-
-    - name: Find command in config
-      if: ${{ steps.atmos-github-actions-enabled.outputs.value == 'true' }}
-      uses: cloudposse/github-action-atmos-get-setting@v1
-      id: command
-      with:
-        component: ${{ inputs.component }}
-        stack: ${{ inputs.stack }}
-        settings-path: command
+        settings: |
+          - component: ${{ inputs.component }}
+            stack: ${{ inputs.stack }}
+            settingsPath: settings.github.actions_enabled
+            outputPath: enabled
+          - component: ${{ inputs.component }}
+            stack: ${{ inputs.stack }}
+            settingsPath: component_info.component_path
+            outputPath: component-path
+          - component: ${{ inputs.component }}
+            stack: ${{ inputs.stack }}
+            settingsPath: atmos_cli_config.base_path
+            outputPath: base-path
+          - component: ${{ inputs.component }}
+            stack: ${{ inputs.stack }}
+            settingsPath: command
+            outputPath: command
 
     - name: Define Job Control State Variables
       shell: bash
@@ -126,68 +135,38 @@ runs:
     - name: Check If GitHub Actions is Enabled For Component
       shell: bash
       run: |
-        if [[ "${{ steps.atmos-github-actions-enabled.outputs.value }}" == "true" ]]; then
+        if [[ "${{ fromJson(steps.component.outputs.settings).enabled }}" == "true" ]]; then
           echo "ACTIONS_ENABLED=true" >> $GITHUB_ENV
         else
           echo "ACTIONS_ENABLED=false" >> $GITHUB_ENV
         fi
 
-    - name: Find component path
-      if: env.ACTIONS_ENABLED == 'true'
-      uses: cloudposse/github-action-atmos-get-setting@v1
-      id: component-path
-      with:
-        component: ${{ inputs.component }}
-        stack: ${{ inputs.stack }}
-        settings-path: component_info.component_path
-
-    - name: Find atmos cli base path
-      if: env.ACTIONS_ENABLED == 'true'
-      uses: cloudposse/github-action-atmos-get-setting@v1
-      id: base-path
-      with:
-        component: ${{ inputs.component }}
-        stack: ${{ inputs.stack }}
-        settings-path: atmos_cli_config.base_path
-
     - name: Set atmos cli base path vars
       if: env.ACTIONS_ENABLED == 'true'
       shell: bash
       run: |-
         # Set ATMOS_BASE_PATH allow `cloudposse/utils` provider to read atmos config from the correct path 
-        ATMOS_BASE_PATH="${{ steps.base-path.outputs.value }}"
+        ATMOS_BASE_PATH="${{ fromJson(steps.component.outputs.settings).base-path }}"
         echo "ATMOS_BASE_PATH=$(realpath ${ATMOS_BASE_PATH:-./})" >> $GITHUB_ENV
 
-    - name: Install tfcmt
-      if: env.ACTIONS_ENABLED == 'true'    
-      uses: jaxxstorm/[email protected]
-      with:
-        repo: suzuki-shunsuke/tfcmt
-        tag: v4.11.0
-
-    - name: Install terraform-docs
-      if: env.ACTIONS_ENABLED == 'true'
-      uses: jaxxstorm/[email protected]
-      with:
-        repo: terraform-docs/terraform-docs
-        tag: v0.18.0
-
     - name: Define Job Variables
       if: env.ACTIONS_ENABLED == 'true'
       id: vars
       shell: bash
       run: |
         STACK_NAME=$(echo "${{ inputs.stack }}" | sed 's#/#_#g')
-        COMPONENT_PATH=$( realpath ${{ steps.component-path.outputs.value }})
+        COMPONENT_PATH=$( realpath ${{ fromJson(steps.component.outputs.settings).component-path }})
         COMPONENT_NAME=$(echo "${{ inputs.component }}" | sed 's#/#_#g')
         COMPONENT_SLUG="$STACK_NAME-$COMPONENT_NAME"
+        COMPONENT_CACHE_KEY=$(basename "${{ fromJson(steps.component.outputs.settings).component-path }}")
         PLAN_FILE="${COMPONENT_PATH}/$COMPONENT_SLUG-${{ inputs.sha }}.planfile"
         LOCK_FILE="${COMPONENT_PATH}/.terraform.lock.hcl"
 
         echo "stack_name=$STACK_NAME" >> $GITHUB_OUTPUT
         echo "component_name=$COMPONENT_NAME" >> $GITHUB_OUTPUT
         echo "component_slug=$COMPONENT_SLUG" >> $GITHUB_OUTPUT
         echo "component_path=${COMPONENT_PATH}" >> $GITHUB_OUTPUT
+        echo "cache-key=${COMPONENT_CACHE_KEY}" >> $GITHUB_OUTPUT
         echo "plan_file=$PLAN_FILE" >> $GITHUB_OUTPUT
         echo "lock_file=$LOCK_FILE" >> $GITHUB_OUTPUT
 
@@ -257,7 +236,7 @@ runs:
       shell: bash
       working-directory: ${{ steps.vars.outputs.component_path }}
       run: |
-        ${{ steps.command.outputs.value }} show -json "${{ steps.vars.outputs.plan_file }}" > "${{ steps.vars.outputs.plan_file }}.json"
+        ${{ fromJson(steps.component.outputs.settings).command }} show -json "${{ steps.vars.outputs.plan_file }}" > "${{ steps.vars.outputs.plan_file }}.json"
 
     - name: Generate Infracost Diff
       if: env.INFRACOST_ENABLED == 'true'
@@ -298,6 +277,15 @@ runs:
         echo "infracost_details_diff_breakdown=$INFRACOST_DETAILS_DIFF_BREAKDOWN" >> "$GITHUB_OUTPUT"
         echo "infracost_diff_total_monthly_cost=$INFRACOST_DIFF_TOTAL_MONTHLY_COST" >> "$GITHUB_OUTPUT"
 
+    - name: Cache .terraform
+      id: cache
+      uses: actions/cache@v4
+      if: ${{ fromJson(steps.component.outputs.settings).enabled }}
+      with:
+        path: |
+          ${{ steps.vars.outputs.component_path }}/.terraform
+        key: ${{ steps.vars.outputs.cache-key }}
+
     - name: Terraform Apply
       if: env.ACTIONS_ENABLED == 'true'
       id: apply