honeyDueAPI/docs/TASK_KANBAN_LOGIC.md

Task Kanban Board Categorization Logic

This document describes how tasks are categorized into kanban columns for display in the Casera mobile app.

Overview

Tasks are organized into 6 kanban columns based on their state and due date. The categorization logic is implemented in internal/repositories/task_repo.go in the GetKanbanData and GetKanbanDataForMultipleResidences functions.

Columns Summary

Column	Name	Color	Button Types	Description
1	Overdue	#FF3B30 (Red)	edit, complete, cancel, mark_in_progress	Tasks past their due date
2	Due Soon	#FF9500 (Orange)	edit, complete, cancel, mark_in_progress	Tasks due within the threshold (default 30 days)
3	Upcoming	#007AFF (Blue)	edit, complete, cancel, mark_in_progress	Tasks due beyond the threshold or with no due date
4	In Progress	#5856D6 (Purple)	edit, complete, cancel	Tasks with status "In Progress"
5	Completed	#34C759 (Green)	view	Tasks with at least one completion record
6	Cancelled	#8E8E93 (Gray)	uncancel, delete	Tasks marked as cancelled

Categorization Flow

The categorization follows this priority order (first match wins):

┌─────────────────────────────────────────────────────────────────┐
│                        START: Process Task                       │
└─────────────────────────────────────────────────────────────────┘
                                  │
                                  ▼
                    ┌─────────────────────────┐
                    │   Is task cancelled?    │
                    │   (is_cancelled = true) │
                    └─────────────────────────┘
                           │           │
                          YES          NO
                           │           │
                           ▼           ▼
                    ┌──────────┐  ┌─────────────────────────┐
                    │CANCELLED │  │ Has task completions?   │
                    │  column  │  │ (len(completions) > 0)  │
                    └──────────┘  └─────────────────────────┘
                                       │           │
                                      YES          NO
                                       │           │
                                       ▼           ▼
                                ┌──────────┐ ┌─────────────────────────┐
                                │COMPLETED │ │ Is status "In Progress"?│
                                │  column  │ │ (status.name = "In...)  │
                                └──────────┘ └─────────────────────────┘
                                                   │           │
                                                  YES          NO
                                                   │           │
                                                   ▼           ▼
                                            ┌───────────┐ ┌─────────────────┐
                                            │IN PROGRESS│ │ Has due date?   │
                                            │  column   │ └─────────────────┘
                                            └───────────┘      │         │
                                                              YES        NO
                                                               │         │
                                                               ▼         ▼
                                                    ┌──────────────┐ ┌────────┐
                                                    │Check due date│ │UPCOMING│
                                                    └──────────────┘ │ column │
                                                           │         └────────┘
                                              ┌────────────┼────────────┐
                                              ▼            ▼            ▼
                                    ┌─────────────┐ ┌──────────┐ ┌────────────┐
                                    │ due < now   │ │due < now │ │due >= now +│
                                    │             │ │+ threshold│ │ threshold  │
                                    └─────────────┘ └──────────┘ └────────────┘
                                           │              │             │
                                           ▼              ▼             ▼
                                    ┌─────────┐    ┌──────────┐  ┌────────┐
                                    │ OVERDUE │    │ DUE SOON │  │UPCOMING│
                                    │  column │    │  column  │  │ column │
                                    └─────────┘    └──────────┘  └────────┘

Detailed Rules

1. Cancelled (highest priority)

if task.IsCancelled {
    cancelled = append(cancelled, task)
    continue
}

• Condition: is_cancelled = true
• Button Types: uncancel, delete
• Rationale: Cancelled tasks can be restored (uncancel) or permanently removed (delete)

2. Completed

if len(task.Completions) > 0 {
    completed = append(completed, task)
    continue
}

• Condition: Task has at least one TaskCompletion record
• Note: A task is considered completed based on having completion records, NOT based on status
• Button Types: view
• Rationale: Completed tasks are read-only for historical purposes; users can view completion details and photos

3. In Progress

if task.InProgress {
    inProgress = append(inProgress, task)
    continue
}

• Condition: Task's in_progress boolean is true
• Button Types: edit, complete, cancel
• Rationale: In-progress tasks can be edited, marked complete, or cancelled if work is abandoned

4. Due Date Based Categories (only for tasks not cancelled, completed, or in progress)

Overdue

if task.DueDate.Before(now) {
    overdue = append(overdue, task)
}

• Condition: due_date < current_time
• Button Types: edit, complete, cancel, mark_in_progress
• Rationale: Overdue tasks need urgent attention - can complete immediately, start working on them, edit the due date, or cancel if no longer needed

Due Soon

if task.DueDate.Before(threshold) {
    dueSoon = append(dueSoon, task)
}

• Condition: current_time <= due_date < (current_time + days_threshold)
• Default threshold: 30 days
• Button Types: edit, complete, cancel, mark_in_progress
• Rationale: Due soon tasks are approaching their deadline - users can complete early, start working, reschedule, or cancel

Upcoming

upcoming = append(upcoming, task)

• Condition: due_date >= (current_time + days_threshold) OR due_date IS NULL
• Button Types: edit, complete, cancel, mark_in_progress
• Rationale: Future tasks may need to be completed early (ahead of schedule), started, rescheduled, or cancelled

Button Types Reference

Button Type	Action	Description
edit	Update task	Modify task details (title, description, due date, category, etc.)
complete	Create completion	Mark task as done with optional notes and photos
cancel	Cancel task	Mark task as cancelled (soft delete, can be uncancelled)
mark_in_progress	Start work	Change status to "In Progress" to indicate work has begun
view	View details	View task and completion details (read-only)
uncancel	Restore task	Restore a cancelled task to its previous state
delete	Hard delete	Permanently remove task (only for cancelled tasks)

Column Metadata

Each column includes metadata for the mobile clients:

{
    Name:        "overdue_tasks",          // Internal identifier
    DisplayName: "Overdue",                // User-facing label
    ButtonTypes: []string{"edit", "complete", "cancel", "mark_in_progress"},
    Icons:       map[string]string{        // Platform-specific icons
        "ios": "exclamationmark.triangle",
        "android": "Warning"
    },
    Color:       "#FF3B30",                // Display color
    Tasks:       []Task{...},              // Tasks in this column
    Count:       int,                      // Number of tasks
}

Icons by Column

Column	iOS Icon	Android Icon
Overdue	exclamationmark.triangle	Warning
Due Soon	clock	Schedule
Upcoming	calendar	Event
In Progress	hammer	Build
Completed	checkmark.circle	CheckCircle
Cancelled	xmark.circle	Cancel

Days Threshold Parameter

The daysThreshold parameter (default: 30) determines the boundary between "Due Soon" and "Upcoming":

• Tasks due within daysThreshold days from now → Due Soon
• Tasks due beyond daysThreshold days from now → Upcoming

This can be customized per request via query parameter.

Sorting

Tasks within each column are sorted by:

1. due_date ASC NULLS LAST (earliest due date first, tasks without due dates at end)
2. priority_id DESC (higher priority first)
3. created_at DESC (newest first)

Excluded Tasks

The following tasks are excluded from the kanban board entirely:

• Archived tasks: is_archived = true

API Response Example

{
  "columns": [
    {
      "name": "overdue_tasks",
      "display_name": "Overdue",
      "button_types": ["edit", "complete", "cancel", "mark_in_progress"],
      "icons": {
        "ios": "exclamationmark.triangle",
        "android": "Warning"
      },
      "color": "#FF3B30",
      "tasks": [...],
      "count": 2
    },
    {
      "name": "due_soon_tasks",
      "display_name": "Due Soon",
      "button_types": ["edit", "complete", "cancel", "mark_in_progress"],
      "icons": {
        "ios": "clock",
        "android": "Schedule"
      },
      "color": "#FF9500",
      "tasks": [...],
      "count": 5
    },
    {
      "name": "upcoming_tasks",
      "display_name": "Upcoming",
      "button_types": ["edit", "complete", "cancel", "mark_in_progress"],
      "icons": {
        "ios": "calendar",
        "android": "Event"
      },
      "color": "#007AFF",
      "tasks": [...],
      "count": 10
    },
    {
      "name": "in_progress_tasks",
      "display_name": "In Progress",
      "button_types": ["edit", "complete", "cancel"],
      "icons": {
        "ios": "hammer",
        "android": "Build"
      },
      "color": "#5856D6",
      "tasks": [...],
      "count": 3
    },
    {
      "name": "completed_tasks",
      "display_name": "Completed",
      "button_types": ["view"],
      "icons": {
        "ios": "checkmark.circle",
        "android": "CheckCircle"
      },
      "color": "#34C759",
      "tasks": [...],
      "count": 15
    },
    {
      "name": "cancelled_tasks",
      "display_name": "Cancelled",
      "button_types": ["uncancel", "delete"],
      "icons": {
        "ios": "xmark.circle",
        "android": "Cancel"
      },
      "color": "#8E8E93",
      "tasks": [...],
      "count": 1
    }
  ],
  "days_threshold": 30,
  "residence_id": "123"
}

Design Decisions

Why "In Progress" doesn't have "mark_in_progress"

Tasks already in the "In Progress" column are already marked as in progress, so this action doesn't make sense.

Why "Completed" only has "view"

Completed tasks represent historical records. Users can view them but shouldn't be able to uncomplete or modify them. If a task was completed incorrectly, the user should delete the completion record through the completion detail view.

Why "Cancelled" has "delete" but others don't

Hard deletion is only available for cancelled tasks as a final cleanup action. For active tasks, users should cancel first (soft delete), then delete if truly needed. This prevents accidental data loss.

Why all active columns have "cancel"

Users should always be able to abandon a task they no longer need, regardless of its due date or progress state.

Code Location

• Repository: internal/repositories/task_repo.go
  • GetKanbanData() - Single residence
  • GetKanbanDataForMultipleResidences() - Multiple residences (all user's properties)
• Service: internal/services/task_service.go
  • ListTasks() - All tasks for user
  • GetTasksByResidence() - Tasks for specific residence
• Response DTOs: internal/dto/responses/task.go
  • KanbanBoardResponse
  • KanbanColumnResponse