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integration-google-mail-tasklist-with-checkboxes

title: Google Mail Integration - Task Checklist type: reference component_type: reference version: 1.0.0 created: '2025-12-27' updated: '2025-12-27' status: active tags:

  • ai-ml
  • authentication
  • deployment
  • security
  • testing
  • api
  • architecture
  • automation summary: 'Google Mail Integration - Task Checklist Project: CODITECT Google Mail (Gmail) Integration Version: 1.0.0 Status: Planning Last Updated: December 17, 2025 Total Remaining --------------------- 23 23 Phase 1: Foundation 0 28 28 Phase 3: Push...' moe_confidence: 0.950 moe_classified: 2025-12-31

Google Mail Integration - Task Checklist

Project: CODITECT Google Mail (Gmail) Integration Version: 1.0.0 Status: Planning Last Updated: December 17, 2025

Quick Stats​

CategoryTotalCompletedRemaining
Phase 0: GCP Setup23023
Phase 1: Foundation42042
Phase 2: API Integration28028
Phase 3: Push Notifications12012
Phase 4: Template System707
Phase 5: Integration-Core10010
Phase 6: AI Pipeline12012
Phase 7: Testing & Docs25322
Success Criteria606
Acceptance: MVP707
Acceptance: Full707
TOTAL1793176

Success Criteria​

  • All free-tier APIs integrated and tested
  • 80%+ unit test coverage
  • Documentation complete (SDD, TDD, ADRs)
  • Component activation workflow functional
  • Push notifications working via Pub/Sub
  • Integration with meeting providers working

Phase 0: GCP Project Setup (Prerequisites)​

0.1 Google Cloud Project Configuration​

  • Create or select GCP project
  • Enable required APIs via GCP Console or CLI
    • Enable Gmail API: gcloud services enable gmail.googleapis.com
    • Enable Pub/Sub: gcloud services enable pubsub.googleapis.com
    • Enable IAM API: gcloud services enable iam.googleapis.com
    • Verify enabled APIs: gcloud services list --enabled

0.2 API Endpoints Verified​

  • Gmail API v1 endpoint accessible: https://gmail.googleapis.com/gmail/v1
  • Cloud Pub/Sub v1 endpoint accessible: https://pubsub.googleapis.com/v1
  • OAuth 2.0 endpoint accessible: https://oauth2.googleapis.com

0.3 OAuth 2.0 Credentials Setup​

  • Create OAuth 2.0 Client ID
    • Go to: APIs & Services → Credentials
    • Click "Create Credentials" → "OAuth client ID"
    • Application type: "Web application"
    • Add localhost redirect URI: http://localhost:8080/oauth/callback
    • Add production redirect URI: https://your-domain.com/oauth/callback
    • Download client credentials JSON
  • Configure OAuth Consent Screen
    • Go to: APIs & Services → OAuth consent screen
    • User type: External (or Internal for Workspace)
    • App name: "CODITECT Gmail Integration"
    • User support email configured
    • Add Gmail scopes
    • Add test users

0.4 Service Account Setup (Optional - Enterprise)​

  • Create Service Account
    • Run: gcloud iam service-accounts create gmail-integration
    • Download key file
  • Enable Domain-Wide Delegation (Workspace only)
    • Enable in IAM & Admin → Service Accounts
    • Copy Client ID
  • Configure in Google Workspace Admin Console
    • Add domain-wide delegation entry
    • Configure OAuth scopes

0.5 Cloud Pub/Sub Setup​

  • Create Pub/Sub Topic
    • Run: gcloud pubsub topics create gmail-push-notifications
    • Grant Gmail API permission to publish
  • Create Pub/Sub Subscription
    • Create push subscription (production)
    • Create pull subscription (development)
  • Verify Pub/Sub Permissions
    • List topic IAM policy verified

0.6 Environment Variables​

  • Create .env file with credentials
    • GMAIL_CLIENT_ID configured
    • GMAIL_CLIENT_SECRET configured
    • GMAIL_REDIRECT_URI configured
    • GOOGLE_CLOUD_PROJECT configured
    • GMAIL_PUBSUB_TOPIC configured
    • TOKEN_ENCRYPTION_KEY configured
  • Add .env to .gitignore
  • Create .env.example with placeholder values

Phase 1: Foundation​

1.1 Project Setup​

  • Create project structure
    • src/ directory with __init__.py
    • tests/ directory with __init__.py
    • config/ directory with default.yaml
    • docs/ directory (already created)
  • Set up pyproject.toml with dependencies
  • Configure pytest and coverage
  • Set up pre-commit hooks
  • Create .gitignore for secrets

1.2 Email Provider Interface​

  • Define EmailProviderInterface abstract base class
    • Import: from coditect_integrations.email import EmailProviderInterface
    • authenticate() method
    • send_email() method
    • get_message() method
    • list_messages() method
    • search() method
    • get_thread() method
    • watch_inbox() method
    • stop_watch() method
    • add_label() / remove_label() methods
  • Create data models
    • EmailMessage dataclass
    • EmailThread dataclass
    • Attachment dataclass
    • EmailLabel dataclass
  • Define exception hierarchy
    • EmailIntegrationError base
    • EmailAuthenticationError
    • EmailRateLimitError
    • EmailNotFoundError
    • EmailSendError

1.3 OAuth Implementation​

  • Implement GmailOAuthManager
    • Authorization URL generation (https://accounts.google.com/o/oauth2/auth)
    • Code exchange for tokens (https://oauth2.googleapis.com/token)
    • Token refresh logic
    • Token revocation (https://oauth2.googleapis.com/revoke)
  • Implement GmailServiceAccountAuth
    • Load service account credentials
    • Domain-wide delegation support
    • User impersonation
  • Create token storage abstraction
    • Secure storage interface
    • File-based implementation (encrypted)
    • Encryption at rest (AES-256)
  • Write unit tests for OAuth
    • Test authorization URL generation
    • Test token exchange
    • Test token refresh
    • Test error handling

1.4 Rate Limiting​

  • Implement TokenBucket class
    • Async support
    • Configurable rate and burst
    • Token refill logic
  • Implement GmailRateLimiter
    • Per-operation rate limits
    • Default: 250 req/100s per user
    • Send: 100 req/100s (conservative)
    • Batch: 50 req/100s
  • Implement daily quota tracker
    • Track sends per day (limit: 2000)
    • Track queries per day
    • Warning on approaching limits (80%)
  • Write unit tests
    • Test rate limiting behavior
    • Test quota tracking

Phase 2: API Integration​

2.1 Gmail API Client​

  • Implement GmailAPIClient
    • Base URL: https://gmail.googleapis.com/gmail/v1
    • Authenticated requests via google-api-python-client
    • Response handling and error mapping
    • Rate limit header parsing
  • Implement message operations
    • send_message() → POST /users/me/messages/send
    • get_message() → GET /users/me/messages/{id}
    • list_messages() → GET /users/me/messages
    • modify_message() → POST /users/me/messages/{id}/modify
    • trash_message() → POST /users/me/messages/{id}/trash
    • delete_message() → DELETE /users/me/messages/{id}
  • Implement thread operations
    • get_thread() → GET /users/me/threads/{id}
    • list_threads() → GET /users/me/threads
  • Implement label operations
    • list_labels() → GET /users/me/labels
    • create_label() → POST /users/me/labels
  • Write unit tests

2.2 Email Composer​

  • Implement EmailComposer
    • Build MIME messages
    • Plain text body
    • HTML body (multipart/alternative)
    • Attachments (multipart/mixed)
    • Inline images (Content-ID)
    • Reply threading (In-Reply-To, References)
  • Base64url encoding for Gmail API
  • Write unit tests

2.3 Email Parser​

  • Implement EmailParser
    • Parse Gmail API response → EmailMessage
    • Parse headers
    • Parse addresses
    • Extract body (plain + HTML)
    • Extract attachments
    • Parse dates
  • Implement thread parsing
    • Parse thread response → EmailThread
    • Extract participants
  • Write unit tests

2.4 Gmail Provider​

  • Implement GmailProvider(EmailProviderInterface)
    • Implement all interface methods
    • Coordinate auth, API client, rate limiter
    • Handle authentication modes (OAuth vs Service Account)
  • Create configuration loader
    • YAML configuration parsing
    • Environment variable support
    • Validation
  • Write integration tests
    • Test full send/receive workflow
    • Test error scenarios

Phase 3: Push Notifications​

3.1 Inbox Watcher​

  • Implement GmailInboxWatcher
    • Gmail watch API integration (POST /users/me/watch)
    • Pub/Sub subscriber setup
    • History API for message retrieval (GET /users/me/history)
  • Implement notification handling
    • Parse Pub/Sub message
    • Fetch new messages via history
    • Route to registered handlers
  • Implement watch renewal
    • Track watch expiration (7 days)
    • Automatic renewal before expiry
    • Stop watch cleanup (POST /users/me/stop)
  • Write unit tests

3.2 Polling Fallback​

  • Implement PollingFallback
    • Configurable poll interval
    • Track seen message IDs
    • Same handler interface as push
  • Automatic fallback on Pub/Sub failure
  • Write unit tests

Phase 4: Template System​

4.1 Email Template Engine​

  • Implement EmailTemplateEngine
    • Jinja2 integration
    • Default templates (meeting invitation, reminder, cancellation)
    • Custom template registration
    • Template caching
  • Create default templates
    • meeting_invitation.html
    • meeting_reminder.html
    • meeting_cancellation.html
    • meeting_update.html
  • Write unit tests

Phase 5: Integration-Core Email Modules​

5.1 Email Interface in integration-core​

  • Create coditect_integrations/email/ module
    • interface.py - EmailProviderInterface
    • orchestrator.py - EmailOrchestrator
    • exceptions.py - Email exceptions
  • Add email models to coditect_integrations/models/
    • email.py - EmailMessage, EmailThread, Attachment

5.2 Notification Channel Integration​

  • Create GmailNotificationChannel(NotificationChannel)
    • Implement send() method
    • Template rendering for meeting notifications
  • Register with ReminderService
  • Register with AttendeeManager

5.3 Meeting Provider Integration​

  • Implement EmailOrchestrator meeting methods
    • send_meeting_invitation(meeting, attendees)
    • send_meeting_reminder(meeting, attendee)
    • send_meeting_cancellation(meeting, attendees)
    • send_meeting_update(meeting, attendees, changes)
  • Connect to Google Meet provider
  • Connect to Zoom provider
  • Write integration tests

Phase 6: AI Pipeline Integration​

6.1 Email Analysis​

  • Implement EmailAnalyzer
    • Thread analysis for action items
    • Sentiment analysis
    • Summary generation
    • Meeting follow-up detection
  • Create AI prompt templates
    • Summarization prompt
    • Action items extraction prompt
    • Decision extraction prompt
  • Connect to CODITECT AI service
  • Write integration tests

6.2 Context Database Integration​

  • Implement EmailContextStore
    • Store email metadata
    • Store thread summaries
    • Store AI-generated insights
  • Create search capabilities
    • Full-text search on emails
    • Filter by date range
    • Filter by sender/recipient
    • Filter by related meeting
  • Write integration tests

Phase 7: Testing & Documentation​

7.1 Comprehensive Testing​

  • Unit tests (80%+ coverage)
    • OAuth tests
    • Rate limiter tests
    • API client tests
    • Composer tests
    • Parser tests
    • Provider tests
    • Template tests
  • Integration tests
    • End-to-end send/receive
    • Push notification flow
    • Error handling scenarios
  • Performance tests
    • Rate limiting effectiveness
    • Response times

7.2 Documentation​

  • Complete SDD (done)
  • Complete TDD (done)
  • Complete ADRs (done)
  • Create user guide
    • GCP setup instructions
    • OAuth configuration
    • Pub/Sub setup
    • Troubleshooting guide
  • Create API reference
    • Python API documentation
    • Code examples
  • Update README.md
    • Quick start
    • Feature list
    • Requirements

7.3 Component Activation​

  • Create component activation entry
    • Add to component-activation-status.json
    • Define dependencies
    • Set default to disabled
  • Create activation script
    • Validate GCP project
    • Validate OAuth credentials
    • Validate Pub/Sub setup
    • Test connectivity

7.4 Final Review​

  • Code review
  • Documentation review
  • Security review
  • Performance review
  • Final testing

Acceptance Criteria​

MVP (Minimum Viable Product)​

  • GCP project configured with all APIs enabled
  • Can authenticate with Gmail OAuth
  • Can send email via Gmail API
  • Can receive/read emails
  • Push notifications working
  • Component activation works
  • Documentation complete

Full Release​

  • All MVP criteria met
  • Template system working
  • AI analysis integration
  • Meeting provider integration
  • Context database storage
  • Performance targets met
  • Security review passed

Progress Log​

DatePhaseTasks CompletedNotes
2025-12-17Setup3SDD, TDD, ADRs created

Document Control:

  • Created: December 17, 2025
  • Owner: CODITECT Engineering Team
  • Review Cycle: Weekly during development