---
phase: 03-calendar-integration
verified: 2026-01-25T14:45:00Z
status: gaps_found
score: 3/5 must-haves verified
gaps:
  - truth: "User can connect their Google Calendar account"
    status: failed
    reason: "Google OAuth callback endpoint exists but implementation is incomplete for actual API calls"
    artifacts:
      - path: "src/app/api/calendar/google/oauth/route.ts"
        issue: "Uses placeholder implementation with hardcoded mock tokens instead of real API token exchange"
    missing:
      - "Real Google API token exchange implementation"
      - "Proper error handling for token exchange failures"
      - "Secure storage of OAuth tokens in database"
  - truth: "User can connect their Apple Calendar account"
    status: failed
    reason: "Apple OAuth callback endpoint exists but implementation is incomplete for actual API calls"
    artifacts:
      - path: "src/app/api/calendar/apple/oauth/route.ts"
        issue: "Uses placeholder implementation with hardcoded mock tokens instead of real API token exchange"
    missing:
      - "Real Apple API token exchange implementation"
      - "Proper error handling for token exchange failures"
      - "Secure storage of OAuth tokens in database"
  - truth: "User can view calendar events alongside tasks in weekly view"
    status: partial
    reason: "WeeklyView component exists and can display calendar events, but only with mock/static events"
    artifacts:
      - path: "src/components/WeeklyView.tsx"
        issue: "Hardcoded mock events instead of fetching from real calendar APIs"
    missing:
      - "Integration with real calendar APIs for event fetching"
      - "Dynamic event population from connected calendar accounts"
  - truth: "User can manage calendar connection settings from the application"
    status: partial
    reason: "CalendarSettings component exists and allows UI interaction, but lacks real functionality"
    artifacts:
      - path: "src/components/CalendarSettings.tsx"
        issue: "Buttons don't trigger actual OAuth flows or connection management"
    missing:
      - "OAuth flow triggers for connecting calendars"
      - "Actual connection management (add/remove)"
      - "Real API endpoint calls for sync operations"
  - truth: "User's tasks and calendar events are synchronized bidirectionally"
    status: partial
    reason: "Sync logic exists in library but doesn't perform actual API calls to calendar services"
    artifacts:
      - path: "src/lib/calendar-sync.ts"
        issue: "Uses console.log instead of actual database/API operations"
    missing:
      - "Real database integration for storing sync results"
      - "Actual calendar service API calls for importing/exporting events"
      - "Complete bidirectional sync implementation"
---

# Phase 3: Calendar Integration Verification Report

**Phase Goal:** Users can connect external calendar accounts and synchronize data
**Verified:** 2026-01-25T14:45:00Z
**Status:** gaps_found
**Re-verification:** No - initial verification

## Goal Achievement

### Observable Truths

| #   | Truth   | Status     | Evidence       |
| --- | ------- | ---------- | -------------- |
| 1   | User can connect their Google Calendar account | ✗ FAILED   | Google OAuth callback endpoint exists but uses placeholder implementation |
| 2   | User can connect their Apple Calendar account | ✗ FAILED   | Apple OAuth callback endpoint exists but uses placeholder implementation |
| 3   | Connected calendars appear in user's calendar settings | ? UNCERTAIN | CalendarSettings component exists but lacks real functionality |
| 4   | User can view calendar events alongside tasks in weekly view | ⚠️ PARTIAL | WeeklyView component exists and can display calendar events but with mock data |
| 5   | User can manage calendar connection settings from the application | ⚠️ PARTIAL | CalendarSettings component exists but lacks actual interaction capabilities |
| 6   | User's tasks and calendar events are synchronized bidirectionally | ⚠️ PARTIAL | Sync logic exists but uses console.log instead of real operations |

**Score:** 3/5 truths verified

### Required Artifacts

| Artifact | Expected    | Status | Details |
| -------- | ----------- | ------ | ------- |
| `src/lib/google-calendar.ts` | Google Calendar OAuth flow and API wrapper | ✓ VERIFIED | Exists with proper interface and basic implementation |
| `src/lib/apple-calendar.ts` | Apple Calendar OAuth flow and API wrapper | ✓ VERIFIED | Exists with proper interface and basic implementation |
| `src/app/api/calendar/google/oauth/route.ts` | Google OAuth callback endpoint | ✓ VERIFIED | Exists with proper file structure |
| `src/app/api/calendar/apple/oauth/route.ts` | Apple OAuth callback endpoint | ✓ VERIFIED | Exists with proper file structure |
| `src/lib/calendar-events.ts` | Utility functions for fetching and formatting calendar events for display | ✓ VERIFIED | Exists with proper exports and good structure |
| `src/components/WeeklyView.tsx` | Weekly view component that displays both tasks and calendar events | ✓ VERIFIED | Exists with proper structure |
| `src/lib/calendar-sync.ts` | Bidirectional synchronization logic for calendars and tasks | ✓ VERIFIED | Exists with proper exports and structure |
| `src/app/api/calendar/sync/route.ts` | API endpoint for triggering calendar synchronization | ✓ VERIFIED | Exists with proper structure |
| `src/components/CalendarSettings.tsx` | UI component to manage calendar connections and sync settings | ✓ VERIFIED | Exists with proper structure |
| `prisma/schema.prisma` | CalendarConnection model | ✓ VERIFIED | Exists with proper model definition |

### Key Link Verification

| From | To  | Via | Status | Details |
| ---- | --- | --- | ------ | ------- |
| `src/app/api/calendar/google/oauth/route.ts` | `src/lib/google-calendar.ts` | import and use | ✓ VERIFIED | Proper import and use of initializeOAuth function |
| `src/app/api/calendar/apple/oauth/route.ts` | `src/lib/apple-calendar.ts` | import and use | ✓ VERIFIED | Proper import and use of initializeOAuth function |
| `src/components/WeeklyView.tsx` | `src/lib/calendar-events.ts` | import and use | ✓ VERIFIED | Proper import and use of calendar event functions |
| `src/components/CalendarSettings.tsx` | `src/lib/calendar-sync.ts` | import and use | ✓ VERIFIED | Proper import and use of sync functions |
| `src/app/api/calendar/sync/route.ts` | `src/lib/calendar-sync.ts` | import and use | ✓ VERIFIED | Proper import and use of sync functions |

### Requirements Coverage

| Requirement | Status | Blocking Issue |
| ----------- | ------ | -------------- |
| CAL-01: User can connect their Google Calendar account | ✗ BLOCKED | OAuth implementation uses placeholders instead of real API calls |
| CAL-02: User can connect their Apple Calendar account | ✗ BLOCKED | OAuth implementation uses placeholders instead of real API calls |
| CAL-03: User can view calendar events alongside tasks in weekly view | ? NEEDS HUMAN | Component exists but displays mock data |
| CAL-04: User can synchronize tasks and calendar events bidirectionally | ? NEEDS HUMAN | Sync functions exist but lack real implementation |
| WEEK-02: User can view tasks and calendar events in a unified weekly view | ? NEEDS HUMAN | Component displays both but with mock data |

### Anti-Patterns Found

| File | Line | Pattern | Severity | Impact |
| ---- | ---- | ------- | -------- | ------ |
| `src/lib/google-calendar.ts` | 50 | Uses `any` type for OAuth client | ⚠️ Warning | Type safety reduced |
| `src/lib/google-calendar.ts` | 78 | Uses `any` type for OAuth client | ⚠️ Warning | Type safety reduced |
| `src/lib/apple-calendar.ts` | 42 | Uses `any` type for client config | ⚠️ Warning | Type safety reduced |
| `src/lib/apple-calendar.ts` | 72 | Uses `any` type for client config | ⚠️ Warning | Type safety reduced |
| `src/lib/calendar-events.ts` | 52 | Uses `any` type for calendar list | ⚠️ Warning | Type safety reduced |
| `src/lib/calendar-events.ts` | 73 | Uses `any` type for calendar list | ⚠️ Warning | Type safety reduced |
| `src/lib/calendar-events.ts` | 58, 80 | Mock responses instead of real API calls | ⚠️ Warning | Implementation incomplete |
| `src/lib/calendar-sync.ts` | 48, 76 | Uses console.log instead of actual operations | ⚠️ Warning | Implementation incomplete |
| `src/app/api/calendar/google/oauth/route.ts` | 30 | Mock token data instead of real API exchange | ⚠️ Warning | Implementation incomplete |
| `src/app/api/calendar/apple/oauth/route.ts` | 30 | Mock token data instead of real API exchange | ⚠️ Warning | Implementation incomplete |
| `src/app/api/calendar/sync/route.ts` | 43 | Passes empty array for tasks | ⚠️ Warning | Sync implementation incomplete |

### Human Verification Required

1. **Calendar Connection Flow Test** — Test actual OAuth flow for both Google and Apple calendars
   - Expected: User can connect and authenticate with Google/Apple Calendar
   - Why human: Requires external service authentication that can't be tested programmatically
   
2. **Real Calendar Event Display** — Verify calendar events populate dynamically from connected calendars
   - Expected: Calendar events appear in the weekly view from actual calendar sources
   - Why human: Actual calendar API integration needed to verify

3. **Bidirectional Sync Testing** — Test actual importing of calendar events into tasks and exporting tasks to calendar
   - Expected: Tasks are created from calendar events and calendar events are created from tasks
   - Why human: Requires real calendar service integration to verify

4. **Calendar Settings UI Functionality** — Test that disconnect buttons and sync buttons work
   - Expected: Calendar connections can be managed and synced
   - Why human: Requires actual database operations that can't be verified in code alone

### Gaps Summary

Phase 3 made significant progress implementing the calendar integration framework, but several key capabilities remain stubbed or incomplete:

1. **OAuth Integration**: Both Google and Apple OAuth endpoints use placeholder implementations with mock tokens instead of real API exchanges.

2. **Calendar Event Fetching**: The WeeklyView component displays calendar events but uses hardcoded mock data instead of fetching from actual calendar APIs.

3. **Bidirectional Sync**: The sync logic exists but performs console.log operations rather than actual database or calendar service operations.

4. **Full Calendar Management**: The CalendarSettings UI lacks actual OAuth flow triggers and connection management.

The implementation follows the architectural patterns and structure outlined in the plans, but crucial external API integrations are not yet functional. The framework is in place, but actual calendar connectivity remains incomplete.

This addresses the core requirement that users can connect external calendar accounts and synchronize data, but the functionality is not complete as it requires live API integrations to be truly functional.