121 lines
4.7 KiB
Markdown
121 lines
4.7 KiB
Markdown
# GovOPlaN Calendar Integration Concept
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## Module Boundary
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`govoplan-calendar` owns calendar primitives:
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- calendar collections
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- VEVENT storage and iCalendar import/export
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- event recurrence data, recurrence exceptions, and future recurrence expansion
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- availability and free/busy semantics
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- resources such as rooms, shared equipment, and service desks
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- groupware calendar adapter boundaries, including CalDAV and Open-Xchange
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Calendar does not own meeting-poll decisions, bookable service appointments, task lifecycle, mail transport, or document lifecycle. Those modules should reference calendar events through stable IDs, iCalendar UIDs, capabilities, or API contracts.
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## First Implementation
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The first standalone module provides:
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- `CalendarCollection` records for tenant calendars
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- `CalendarEvent` records for VEVENT data
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- normalized query fields: start, end, summary, location, all-day flag, status, transparency, classification, calendar ID, UID, recurrence ID, sequence, source, and ETag
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- iCalendar preservation: raw VEVENT properties, parameters, and generated `text/calendar` export
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- API endpoints for listing calendars, creating/updating/deleting events, importing iCalendar, and exporting event ICS
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- WebUI views: month, week, workweek, day, and continuous week-row scrolling
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The first implementation is not yet a full CalDAV network server. It is the internal calendar storage and UI foundation on which CalDAV sync, Open-Xchange integration, recurrence expansion, and free/busy endpoints can be built.
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## Integration Points
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### Scheduling
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`govoplan-scheduling` should use calendar for:
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- organizer availability lookup
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- candidate slot conflict checks
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- final event creation after a poll decision
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- participant invitation state as VEVENT attendees when a meeting becomes real
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Scheduling remains owner of polls, candidate ranking, external participation links, and decision audit.
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### Appointments
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`govoplan-appointments` should use calendar for:
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- confirmed appointment placement
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- staff/resource conflict checks
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- room and desk calendars
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- cancellation or rescheduling events
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Appointments remains owner of public booking flows, service definitions, capacity rules, queues, and no-show handling.
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### Tasks And Workflow
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`govoplan-tasks` and `govoplan-workflow` should use calendar for:
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- due-date and reminder calendar overlays
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- workflow deadlines
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- escalation dates
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- optional event creation for hearings, reviews, inspections, and internal meetings
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Tasks/workflow remain owners of assignment, status, SLA logic, and completion semantics.
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### Mail And Notifications
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`govoplan-mail` and `govoplan-notifications` should use calendar for:
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- outbound iCalendar invites and updates
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- inbound invite parsing from messages
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- RSVP state changes
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- reminders and digest notifications
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Mail remains owner of SMTP/IMAP profiles and mailbox transport. Notifications remains owner of delivery channels and delivery policy.
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### Documents And DMS
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`govoplan-dms` can link documents to events for:
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- agendas
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- minutes
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- attachments
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- legal deadlines
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- retention and audit context
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DMS remains owner of versions, locks, approvals, collaboration, legal hold, and document retention.
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### Cases, Campaigns, Forms, And Portal
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Domain modules may attach calendar references to domain objects:
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- cases: hearings, inspections, review meetings
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- campaigns: send windows and review deadlines
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- forms: submission windows and office-hour sessions
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- portal: citizen-facing event or appointment visibility
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Calendar should expose reusable event and availability APIs instead of importing those modules.
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### Connectors And Public-Sector Groupware
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`govoplan-connectors` should own generic connector catalogue behavior, connection setup patterns, and external-system inventory. Calendar owns the actual calendar semantics for:
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- CalDAV
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- Open-Xchange calendar
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- OpenDesk calendar stack integration
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- resource-calendar mapping
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- free/busy sync
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- recurrence and exception mapping
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- conflict handling
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The connector boundary should hand calendar a configured profile and credentials reference, not a domain-specific event model.
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## Follow-Up Work
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- Full recurrence expansion for RRULE, RDATE, EXDATE, RECURRENCE-ID, overridden instances, and detached instances.
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- Free/busy endpoint and capability for scheduling, appointments, and resource checks.
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- CalDAV sync adapter with collection sync tokens, ETags, REPORT handling, and conflict resolution.
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- Open-Xchange adapter that maps OX calendars, attendees, resources, recurrence, and free/busy to the internal calendar model.
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- Attendee RSVP workflow and mail/notification bridge.
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- Resource calendars for rooms, equipment, counters, and service desks.
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- Calendar ACLs beyond tenant-wide permissions.
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