# Walkthrough — Invitation Engine Foundation (PILOT-001)

We have successfully implemented the **Invitation Engine Foundation (PILOT-001)**. This feature enables couples to configure their display names, love story, wedding date and time, venue address, and cover asset parameters, preview the invitation using the default Klasik Putih styling layout, and publish the invitation to transition their workspace operational phase.

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## 1. Files Created and Modified

### New Files Created
* **[NEW]** [InvitationModel.php](file:///c:/xampp/htdocs/inveetaire/app/modules/Invitation/InvitationModel.php) — Database read/write logic isolated to `workspace_id`.
* **[NEW]** [InvitationValidator.php](file:///c:/xampp/htdocs/inveetaire/app/modules/Invitation/InvitationValidator.php) — Form input validation (URLs, lengths, and dates).
* **[NEW]** [InvitationService.php](file:///c:/xampp/htdocs/inveetaire/app/modules/Invitation/InvitationService.php) — Transactional coordinator managing saves and publishing state changes.
* **[NEW]** [InvitationController.php](file:///c:/xampp/htdocs/inveetaire/app/modules/Invitation/InvitationController.php) — Thin controller routing HTTP requests.
* **[NEW]** [routes.php](file:///c:/xampp/htdocs/inveetaire/app/modules/Invitation/routes.php) — Invitation routes mapping.
* **[NEW]** [edit.php](file:///c:/xampp/htdocs/inveetaire/app/views/invitation/edit.php) — Interactive configuration form.
* **[NEW]** [preview.php](file:///c:/xampp/htdocs/inveetaire/app/views/invitation/preview.php) — Elegant live mobile theme rendering view.

### Files Modified
* **[MODIFY]** [couple.php](file:///c:/xampp/htdocs/inveetaire/routes/couple.php) — Bound Invitation module routes to `/app/couple` group.

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## 2. Core Workflows Implemented

### 2.1 Invitation Data Storage
* **Groom & Bride Names**: Persisted to `invitations.groom_display_name` and `invitations.bride_display_name`.
* **Wedding Date**: Synergized across `workspaces.wedding_date` and the primary event row.
* **Wedding Time & Venue details**: Combined and updated inside a primary wedding event row (`is_primary = 1`) in `wedding_events` table.
* **Love Story**: Persisted in `invitations.love_story`.
* **Cover Image & Hero Quote**: Stored dynamically as a JSON object inside `section_config` of `invitation_sections` for the `hero` section slug.

### 2.2 Publication state & Lifecycle Integration
* Saving status as `'published'` updates `invitations.invitation_status` to `'published'` and sets `workspaces.activated_at` to the current timestamp.
* Post-transaction, `WorkspaceService::evaluatePhase()` is triggered, automatically transitioning the workspace operational phase from `'setup'` to `'active'`.

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## 3. Verification Results

All automated integration checks passed:
```
=== INVEETAIRE INVITATION ENGINE FOUNDATION TEST ===

  [PASS] Test 1: Fetching initial details verified
  [PASS] Test 2: Validation constraints verified
  [PASS] Test 3: Save draft configurations verified
  [PASS] Test 3b: Workspace attributes sync verified
  [PASS] Test 4: Publication workflow and lifecycle trigger verified

✅ ALL INVITATION FOUNDATION TESTS PASSED SUCCESSFULLY!
```

All modified files pass syntax check (`php -l`) with zero errors.