docuseal/docs/architecture/enhancement-scope-and-integration-strategy.md

Enhancement Scope and Integration Strategy

Enhancement Overview

Enhancement Type: ✅ Major Feature Addition (3-Portal Cohort Management System)

Scope: Transform the single-portal DocuSeal platform into a specialized 3-portal cohort management system for South African private training institutions. The system will manage training cohorts (learnerships, internships, candidacies) through a coordinated workflow involving institution admins, students, and sponsors.

Integration Impact: ✅ Significant Impact (substantial existing code changes required)

Integration Approach

Code Integration Strategy:

• Additive Approach: All new functionality will be added as new models, controllers, and components without modifying existing DocuSeal core logic
• Extension Pattern: Extend existing authentication and authorization to support new role types
• Service Layer: Create new service objects in lib/cohorts/ directory for cohort-specific business logic
• Event-Driven: Leverage existing webhook infrastructure for cohort workflow notifications

Database Integration:

• New Tables: Create 5 new tables (cohorts, cohort_enrollments, institutions, sponsors, document_verifications) with foreign keys to existing tables
• No Schema Modifications: Existing tables remain unchanged, only new relationships added
• Migration Strategy: Sequential migrations with rollback capability, tested on production-like data
• Data Integrity: Use database transactions for cohort state transitions

API Integration:

• Endpoint Extension: New endpoints under /api/v1/cohorts/* following existing RESTful patterns
• Authentication Reuse: Leverage existing Devise + JWT authentication without modification
• Submission Integration: Use existing submission APIs for document signing workflows
• Versioning: No new API version needed, endpoints extend v1

UI Integration:

• Portal Architecture: Three separate Vue-based portals (Admin, Student, Sponsor) with custom TailwindCSS design
• Component Reuse: Embed existing DocuSeal form builder and signing components within new portal frameworks
• Navigation: Role-based portal switching via new navigation layer
• Design System: Custom TailwindCSS (replacing DaisyUI) for portals while maintaining mobile responsiveness

Compatibility Requirements

Existing API Compatibility: ✅ MAINTAINED

• All new endpoints follow existing DocuSeal API patterns
• No breaking changes to existing public APIs
• Existing authentication mechanisms remain unchanged

Database Schema Compatibility: ✅ MAINTAINED

• New tables only, no modifications to existing tables
• Foreign key relationships to existing tables (users, submissions, templates)
• Backward compatibility through additive schema changes

UI/UX Consistency: ✅ ADAPTED

• Challenge: PRD specifies custom UI/UX (not DaisyUI) for portals
• Solution: Maintain mobile-first responsive principles, consistent interaction patterns, but allow custom design system
• Existing UI: DocuSeal's existing DaisyUI interface remains unchanged for legacy features

Performance Impact: ✅ ACCEPTABLE

• Target: Not exceed current memory usage by more than 20%
• Mitigation: Pagination, lazy loading, background processing for large cohorts
• Monitoring: Extend existing metrics to track cohort-specific performance

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