Story 5.7: Conflict Resolution Modal - Slot Assignment
Story: Epic 5, Story 5.7 - Slot Assignment & Progressive Publishing
Last updated:
January 5, 2026
Reading time:
26 minutes
File size:
67.14 KB
Purpose
This wireframe documents the modal dialog that appears when an organizer attempts to assign a session timing that creates a conflict. The system detects three types of conflicts and provides resolution workflows.
Context: Triggered during drag-drop timing assignment on the dedicated slot assignment page.
Conflict Types
1. Room Overlap (ERROR - Must Resolve)
Trigger: Assigning a session to a room that is already occupied during the proposed time slot.
Severity: 🔴 Error - Assignment blocked, must be resolved
Example: Trying to assign “Workshop 2” to Room A from 14:00-15:30 when “Panel Discussion” already occupies Room A from 14:00-16:00.
2. Speaker Double-Booked (ERROR - Must Resolve)
Trigger: Assigning a session to a speaker who is already assigned to another session with overlapping timing.
Severity: 🔴 Error - Assignment blocked, must be resolved
Example: Trying to assign Dr. Sarah Miller to “Workshop 2” at 14:00-15:30 when she’s already assigned to “Keynote” at 13:00-14:30.
3. Speaker Preference Conflict (WARNING - Can Override)
Trigger: Assigning a session timing that conflicts with the speaker’s stated time preferences or avoid times.
Severity: ⚠️ Warning - Assignment allowed with explicit override
Example: Assigning a speaker who prefers afternoon sessions to an early morning 08:00-09:30 time slot.
Modal Structure
Header (All Conflict Types)
┌─────────────────────────────────────────────────────────────────────────┐
│ [Icon] Timing Conflict Detected [X] │
└─────────────────────────────────────────────────────────────────────────┘
Icons by Severity:
- 🔴 Error: Red circle with exclamation mark
- ⚠️ Warning: Yellow triangle with exclamation mark
Scenario 1: Room Overlap Conflict
Trigger: User drags “Workshop 2” (Dr. Sarah Miller) to Room A, 14:00-15:30 Conflict: “Panel Discussion” already occupies Room A from 14:00-16:00
┌─────────────────────────────────────────────────────────────────────────┐
│ 🔴 Timing Conflict Detected [X] │
├─────────────────────────────────────────────────────────────────────────┤
│ │
│ Conflict Type: Room Overlap │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ You are trying to assign: │ │
│ │ │ │
│ │ Session: "Workshop 2: Advanced Cloud Architecture" │ │
│ │ Speaker: Dr. Sarah Miller │ │
│ │ Time: 14:00 - 15:30, June 10, 2025 │ │
│ │ Room: Conference Room A │ │
│ │ Duration: 1.5 hours │ │
│ │ │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ But this room is already occupied: │ │
│ │ │ │
│ │ Session: "Panel Discussion: Industry Trends" │ │
│ │ Speakers: John Smith, Jane Doe, Robert Chen (3 panelists) │ │
│ │ Time: 14:00 - 16:00, June 10, 2025 │ │
│ │ Room: Conference Room A │ │
│ │ Duration: 2 hours │ │
│ │ │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ Overlap Duration: 1.5 hours (14:00 - 15:30) │
│ │
│ ┌─── Visual Timeline ──────────────────────────────────────────────┐ │
│ │ │ │
│ │ Conference Room A - June 10, 2025 │ │
│ │ │ │
│ │ 13:00 14:00 15:00 16:00 17:00 │ │
│ │ ──────────┬────────┬────────┬────────┬──────── │ │
│ │ │ │ │ │ │ │
│ │ ├────────┴────────┴────────┤ │ │
│ │ │ Panel Discussion │ ← Existing session │ │
│ │ │ (14:00 - 16:00) │ │ │
│ │ └─────────────────────────┘ │ │
│ │ │ │
│ │ ├────────┴────────┤ │ │
│ │ │ Workshop 2 │ ← Attempted assignment │ │
│ │ │ (14:00 - 15:30)│ │ │
│ │ └─────────────────┘ │ │
│ │ │ │
│ │ └─────────────────┘ │ │
│ │ OVERLAP: 1.5 hours (shown in red) │ │
│ │ │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ How would you like to resolve this conflict? │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ [1] Find Alternative Time Slot │ │
│ │ View available slots in Room A or other rooms that match │ │
│ │ Dr. Sarah Miller's preferences │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ [2] Assign to Different Room │ │
│ │ Keep timing (14:00-15:30) but assign to a different room │ │
│ │ Available rooms: Room B, Main Hall │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ [3] Reassign Panel Discussion │ │
│ │ Move "Panel Discussion" to a different time or room │ │
│ │ Warning: This affects 3 speakers │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ [Cancel] │ │
│ │ Abort this assignment and return to slot assignment view │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
└─────────────────────────────────────────────────────────────────────────┘
Resolution Flow for Option 1 (Find Alternative Slot):
User clicks [1] Find Alternative Time Slot → Modal transitions to suggestion view:
┌─────────────────────────────────────────────────────────────────────────┐
│ 🔍 Alternative Time Slots for Workshop 2 [X] │
├─────────────────────────────────────────────────────────────────────────┤
│ │
│ Showing available slots that match Dr. Sarah Miller's preferences: │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ 🟢 Strong Match (85%) │ │
│ │ │ │
│ │ June 10, 2025 | 11:00 - 12:30 | Conference Room B │ │
│ │ │ │
│ │ ✓ Afternoon slot (preferred) │ │
│ │ ✓ Room B has natural light (preferred) │ │
│ │ ✓ Projector and microphone available │ │
│ │ ✓ No conflicts with other sessions │ │
│ │ │ │
│ │ [Assign to This Slot] │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ 🟢 Strong Match (82%) │ │
│ │ │ │
│ │ June 10, 2025 | 16:00 - 17:30 | Conference Room A │ │
│ │ │ │
│ │ ✓ Afternoon slot (preferred) │ │
│ │ ✓ Same room as originally intended │ │
│ │ ✓ All A/V requirements met │ │
│ │ ⚠️ Slightly later than typical (4pm start) │ │
│ │ │ │
│ │ [Assign to This Slot] │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ 🟡 Acceptable Match (65%) │ │
│ │ │ │
│ │ June 11, 2025 | 09:00 - 10:30 | Main Hall │ │
│ │ │ │
│ │ ✓ Large room with excellent A/V setup │ │
│ │ ⚠️ Morning slot (speaker prefers afternoon) │ │
│ │ ⚠️ Different day than originally planned │ │
│ │ │ │
│ │ [Assign to This Slot] │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ Showing 3 of 8 available slots. [View All Slots] │
│ │
│ [← Back to Conflict Details] [Cancel] │
│ │
└─────────────────────────────────────────────────────────────────────────┘
User clicks [Assign to This Slot] → Modal shows confirmation:
┌─────────────────────────────────────────────────────────────────────────┐
│ ✓ Conflict Resolved [X] │
├─────────────────────────────────────────────────────────────────────────┤
│ │
│ Success! Workshop 2 has been assigned. │
│ │
│ Session: "Workshop 2: Advanced Cloud Architecture" │
│ Speaker: Dr. Sarah Miller │
│ Time: 11:00 - 12:30, June 10, 2025 │
│ Room: Conference Room B │
│ Match: 85% (Strong match with speaker preferences) │
│ │
│ [Return to Slot Assignment] │
│ │
└─────────────────────────────────────────────────────────────────────────┘
Resolution Flow for Option 2 (Assign to Different Room):
User clicks [2] Assign to Different Room → Modal transitions to room selection:
┌─────────────────────────────────────────────────────────────────────────┐
│ 🏢 Select Alternative Room [X] │
├─────────────────────────────────────────────────────────────────────────┤
│ │
│ Keep timing: 14:00 - 15:30, June 10, 2025 │
│ Speaker: Dr. Sarah Miller │
│ │
│ Available rooms during this time: │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ ● Conference Room B │ │
│ │ │ │
│ │ Capacity: 40 people │ │
│ │ A/V Setup: ✓ Projector, ✓ Microphone, ✓ Clicker │ │
│ │ Features: Natural light, Standing desk available │ │
│ │ Status: Available (no conflicts) │ │
│ │ │ │
│ │ Match Score: 90% 🟢 (Excellent match for speaker setup) │ │
│ │ │ │
│ │ [Assign to Room B] │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ ○ Main Hall │ │
│ │ │ │
│ │ Capacity: 200 people │ │
│ │ A/V Setup: ✓ Projector, ✓ Microphone, ✓ Recording │ │
│ │ Features: Stage, Theater seating │ │
│ │ Status: Available (no conflicts) │ │
│ │ │ │
│ │ Match Score: 60% 🟡 (Large room, may be oversized) │ │
│ │ │ │
│ │ [Assign to Main Hall] │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ [← Back to Conflict Details] [Cancel] │
│ │
└─────────────────────────────────────────────────────────────────────────┘
Resolution Flow for Option 3 (Reassign Panel Discussion):
User clicks [3] Reassign Panel Discussion → Modal shows warning:
┌─────────────────────────────────────────────────────────────────────────┐
│ ⚠️ Reassign Existing Session? [X] │
├─────────────────────────────────────────────────────────────────────────┤
│ │
│ You are about to move an existing session to resolve this conflict. │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ Session to Reassign: │ │
│ │ │ │
│ │ "Panel Discussion: Industry Trends" │ │
│ │ Current: 14:00 - 16:00, Room A │ │
│ │ Speakers: John Smith, Jane Doe, Robert Chen (3 panelists) │ │
│ │ │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ ⚠️ Warning: This will affect multiple speakers │
│ You will need to assign a new timing for the panel discussion that │
│ works for all 3 panelists. │
│ │
│ Alternative suggested timings for Panel Discussion: │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ June 10, 2025 | 16:30 - 18:30 | Conference Room A │ │
│ │ Match: 75% (all speakers available, Room A still free) │ │
│ │ [Move Panel to This Slot] │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ June 11, 2025 | 10:00 - 12:00 | Main Hall │ │
│ │ Match: 65% (different day, all speakers available) │ │
│ │ [Move Panel to This Slot] │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ [View More Alternatives] │
│ │
│ [← Back to Conflict Details] [Cancel] │
│ │
└─────────────────────────────────────────────────────────────────────────┘
Scenario 2: Speaker Double-Booked Conflict
Trigger: User drags “Workshop 2” to 14:00-15:30 time slot, assigning Dr. Sarah Miller Conflict: Dr. Sarah Miller already assigned to “Keynote” at 13:00-14:30
┌─────────────────────────────────────────────────────────────────────────┐
│ 🔴 Timing Conflict Detected [X] │
├─────────────────────────────────────────────────────────────────────────┤
│ │
│ Conflict Type: Speaker Double-Booked │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ You are trying to assign Dr. Sarah Miller to: │ │
│ │ │ │
│ │ Session: "Workshop 2: Advanced Cloud Architecture" │ │
│ │ Time: 14:00 - 15:30, June 10, 2025 │ │
│ │ Room: Conference Room B │ │
│ │ Duration: 1.5 hours │ │
│ │ │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ But Dr. Sarah Miller is already assigned to: │ │
│ │ │ │
│ │ Session: "Keynote: Future of Cloud Architecture" │ │
│ │ Time: 13:00 - 14:30, June 10, 2025 │ │
│ │ Room: Main Hall │ │
│ │ Duration: 1.5 hours │ │
│ │ Status: Already confirmed and published │ │
│ │ │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ Overlap Duration: 30 minutes (14:00 - 14:30) │
│ │
│ ┌─── Visual Timeline ──────────────────────────────────────────────┐ │
│ │ │ │
│ │ Dr. Sarah Miller's Schedule - June 10, 2025 │ │
│ │ │ │
│ │ 12:00 13:00 14:00 15:00 16:00 │ │
│ │ ──────────┬────────┬────────┬────────┬──────── │ │
│ │ │ │ │ │ │ │
│ │ ├────────┴────┤ │ │
│ │ │ Keynote │ ← Existing assignment │ │
│ │ │ 13:00-14:30│ │ │
│ │ └─────────────┘ │ │
│ │ │ │
│ │ ├────────┴────┤ │ │
│ │ │ Workshop 2 │ ← Attempted assignment │ │
│ │ │ 14:00-15:30│ │ │
│ │ └─────────────┘ │ │
│ │ │ │
│ │ └──┘ │ │
│ │ OVERLAP: 30 min (shown in red) │ │
│ │ │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ ⚠️ Note: Keynote is already published (Phase 2). Moving it would │
│ require unpublishing and notifying subscribers. │
│ │
│ How would you like to resolve this conflict? │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ [1] Find Alternative Time Slot │ │
│ │ View available slots for Workshop 2 that don't conflict │ │
│ │ with Dr. Sarah Miller's schedule │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ [2] Assign Different Speaker │ │
│ │ Keep Workshop 2 timing (14:00-15:30) but assign a │ │
│ │ different speaker from the available pool │ │
│ │ Available speakers: Prof. John Chen, Dr. Maria Lopez │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ [3] Reschedule Keynote (Not Recommended) │ │
│ │ Move Keynote to a different time │ │
│ │ ⚠️ Requires unpublishing Phase 2 and notifying subscribers │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ [Cancel] │ │
│ │ Abort this assignment and return to slot assignment view │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
└─────────────────────────────────────────────────────────────────────────┘
Resolution Flow for Option 2 (Assign Different Speaker):
User clicks [2] Assign Different Speaker → Modal transitions to speaker selection:
┌─────────────────────────────────────────────────────────────────────────┐
│ 👤 Select Alternative Speaker [X] │
├─────────────────────────────────────────────────────────────────────────┤
│ │
│ Session: "Workshop 2: Advanced Cloud Architecture" │
│ Keep timing: 14:00 - 15:30, June 10, 2025 │
│ Room: Conference Room B │
│ │
│ Available speakers (no conflicts during this time): │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ ● Prof. John Chen │ │
│ │ │ │
│ │ Topic Expertise: Cloud Architecture, Microservices │ │
│ │ Availability: Available all day June 10 │ │
│ │ Time Preference: ☀️ Prefers afternoon (14:00-15:30 ideal) │ │
│ │ A/V Requirements: Projector, Microphone (met by Room B) │ │
│ │ Current Sessions: 1 assigned (Morning workshop) │ │
│ │ │ │
│ │ Match Score: 92% 🟢 (Excellent match for this workshop) │ │
│ │ │ │
│ │ [Assign Prof. Chen to Workshop 2] │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ ○ Dr. Maria Lopez │ │
│ │ │ │
│ │ Topic Expertise: DevOps, Infrastructure │ │
│ │ Availability: Available (no conflicts) │ │
│ │ Time Preference: ⚪ Neutral about afternoon slots │ │
│ │ A/V Requirements: Projector, Whiteboard (Room B has both) │ │
│ │ Current Sessions: 2 assigned (Morning + Evening) │ │
│ │ │ │
│ │ Match Score: 75% 🟢 (Good match, slightly off-topic) │ │
│ │ │ │
│ │ [Assign Dr. Lopez to Workshop 2] │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ Showing 2 of 3 available speakers. [View All Speakers] │
│ │
│ [← Back to Conflict Details] [Cancel] │
│ │
└─────────────────────────────────────────────────────────────────────────┘
Scenario 3: Speaker Preference Conflict (Warning)
Trigger: User drags “Early Morning Workshop” to 08:00-09:30, assigning Dr. Sarah Miller Conflict: Dr. Sarah Miller has marked “Morning before 09:00” as “Avoid” in preferences
┌─────────────────────────────────────────────────────────────────────────┐
│ ⚠️ Preference Mismatch Warning [X] │
├─────────────────────────────────────────────────────────────────────────┤
│ │
│ Conflict Type: Speaker Preference Conflict │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ You are assigning Dr. Sarah Miller to: │ │
│ │ │ │
│ │ Session: "Early Morning Workshop: Getting Started" │ │
│ │ Time: 08:00 - 09:30, June 10, 2025 │ │
│ │ Room: Conference Room A │ │
│ │ Duration: 1.5 hours │ │
│ │ │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ Speaker preferences indicate: │ │
│ │ │ │
│ │ Time Preferences: │ │
│ │ ⊘ Morning (6:00 - 12:00) Avoid (especially before 9am) │ │
│ │ ☀️ Afternoon (12:00 - 18:00) Preferred │ │
│ │ ⊘ Evening (18:00 - 22:00) Avoid │ │
│ │ │ │
│ │ Specific Avoid Time: │ │
│ │ 🔴 June 10, 08:00 - 09:00 (Morning commute) │ │
│ │ │ │
│ │ Additional Notes: │ │
│ │ "I prefer afternoon sessions due to morning family │ │
│ │ commitments. Early morning (before 9am) is very difficult." │ │
│ │ │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ Match Score: 25% 🔴 (Poor match - conflicts with stated preferences) │
│ │
│ ┌─── Preference Comparison ─────────────────────────────────────────┐ │
│ │ │ │
│ │ Criteria Preference Actual Status │ │
│ │ ───────────────────────────────────────────────────────────── │ │
│ │ Time of Day Afternoon Morning ✗ Mismatch │ │
│ │ Specific Avoid Time 08:00-09:00 08:00-09:30 ✗ Conflicts │ │
│ │ Room Setup Natural light Available ✓ Match │ │
│ │ A/V Requirements Projector Available ✓ Match │ │
│ │ │ │
│ └────────────────────────────────────────────────────────────────────┘ │
│ │
│ ⚠️ This is a warning, not an error. You can proceed if needed, but │
│ the speaker may request a time change or decline the assignment. │
│ │
│ How would you like to proceed? │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ [Find Better Matching Slot] (Recommended) │ │
│ │ View alternative time slots that better match │ │
│ │ Dr. Sarah Miller's preferences (afternoon slots) │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ [Assign Different Speaker] │ │
│ │ Keep early morning timing but assign a speaker who │ │
│ │ prefers or is available for morning sessions │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ [Override & Assign Anyway] │ │
│ │ Proceed with this assignment despite preference mismatch │ │
│ │ ⚠️ You may need to contact the speaker to confirm │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ [Cancel] │ │
│ │ Abort this assignment and return to slot assignment view │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
└─────────────────────────────────────────────────────────────────────────┘
Unique Features for Preference Conflict (vs. Hard Conflicts):
- Warning Severity: Yellow ⚠️ icon instead of red 🔴 error
- Override Option: [Override & Assign Anyway] button available (not present in hard conflicts)
- Match Score Display: Shows percentage match with color coding
- Preference Comparison Table: Detailed breakdown of criteria match/mismatch
- Advisory Language: “You can proceed if needed” vs. “Assignment blocked”
Override Confirmation Flow:
User clicks [Override & Assign Anyway] → Modal shows confirmation:
┌─────────────────────────────────────────────────────────────────────────┐
│ ⚠️ Confirm Override [X] │
├─────────────────────────────────────────────────────────────────────────┤
│ │
│ You are about to override speaker preferences. │
│ │
│ This assignment has a match score of only 25% (Poor match). │
│ │
│ ┌──────────────────────────────────────────────────────────────────┐ │
│ │ Recommendation: │ │
│ │ │ │
│ │ We recommend contacting Dr. Sarah Miller before confirming │ │
│ │ this timing to ensure she can accommodate the early morning │ │
│ │ slot despite her stated preferences. │ │
│ │ │ │
│ │ Contact: sarah.miller@example.com │ │
│ │ │ │
│ └──────────────────────────────────────────────────────────────────┘ │
│ │
│ ☑ I understand the speaker may request a time change │
│ ☑ I will contact the speaker to confirm availability │
│ │
│ [Proceed with Assignment] [Cancel] │
│ │
└─────────────────────────────────────────────────────────────────────────┘
After clicking [Proceed with Assignment] → Success with warning flag:
┌─────────────────────────────────────────────────────────────────────────┐
│ ⚠️ Assignment Confirmed with Override [X] │
├─────────────────────────────────────────────────────────────────────────┤
│ │
│ Session assigned successfully, but marked for follow-up. │
│ │
│ Session: "Early Morning Workshop: Getting Started" │
│ Speaker: Dr. Sarah Miller │
│ Time: 08:00 - 09:30, June 10, 2025 │
│ Room: Conference Room A │
│ Match: 25% (Poor match - override applied) │
│ │
│ ⚠️ Action Required: │
│ Contact Dr. Sarah Miller to confirm availability for this timing. │
│ │
│ [Send Email to Speaker] [Add to Follow-Up List] │
│ │
│ [Return to Slot Assignment] │
│ │
└─────────────────────────────────────────────────────────────────────────┘
Conflict Detection Logic
Room Overlap Detection
Trigger Conditions:
- Proposed session has
room = XANDstart_time = T1ANDend_time = T2 - Existing session in database has
room = XAND time range overlaps with[T1, T2)
SQL Query:
sql
SELECT * FROM sessions
WHERE room = :proposedRoom
AND event_id = :eventId
AND session_id != :proposedSessionId
AND (
(start_time < :proposedEndTime AND end_time > :proposedStartTime)
)
Conflict Severity: 🔴 Error (blocking - must resolve)
Speaker Double-Booking Detection
Trigger Conditions:
- Proposed session assigns
speaker_id = SANDstart_time = T1ANDend_time = T2 - Existing session has same
speaker_id = SAND time range overlaps with[T1, T2)
SQL Query:
sql
SELECT s.* FROM sessions s
JOIN speaker_pool sp ON s.id = sp.session_id
WHERE sp.speaker_id = :proposedSpeakerId
AND s.event_id = :eventId
AND s.session_id != :proposedSessionId
AND (
(s.start_time < :proposedEndTime AND s.end_time > :proposedStartTime)
)
Conflict Severity: 🔴 Error (blocking - must resolve)
Speaker Preference Conflict Detection
Trigger Conditions:
- Proposed session timing falls outside speaker’s preferred time ranges
- Proposed session overlaps with speaker’s specific avoid times
- Match score calculated based on preferences falls below threshold (e.g., <50%)
Preference Match Algorithm:
typescript
interface PreferenceMatch {
score: number; // 0-100
severity: 'strong' | 'acceptable' | 'poor';
conflicts: string[];
}
function calculatePreferenceMatch(
sessionTiming: { start: Date, end: Date, room: Room },
preferences: SpeakerPreferences
): PreferenceMatch {
let score = 100;
const conflicts: string[] = [];
// Time of day preference (30 points)
if (isInPreferredTimeRange(sessionTiming, preferences.preferredTimes)) {
// No penalty
} else if (isInAvoidTimeRange(sessionTiming, preferences.avoidTimes)) {
score -= 30;
conflicts.push('Time of day conflicts with avoid preference');
} else {
score -= 15; // Neutral time
}
// Specific avoid times (40 points)
if (overlapsSpecificAvoidTime(sessionTiming, preferences.specificAvoidTimes)) {
score -= 40;
conflicts.push(`Conflicts with specific avoid time: ${formatAvoidTime(...)}`);
}
// Room setup preferences (15 points)
if (!roomMeetsRequirements(sessionTiming.room, preferences.roomSetup)) {
score -= 15;
conflicts.push('Room setup does not meet preferences');
}
// A/V requirements (15 points)
if (!roomHasAVSetup(sessionTiming.room, preferences.avRequirements)) {
score -= 15;
conflicts.push('Room lacks required A/V equipment');
}
// Determine severity
let severity: 'strong' | 'acceptable' | 'poor';
if (score >= 80) severity = 'strong';
else if (score >= 50) severity = 'acceptable';
else severity = 'poor';
return { score, severity, conflicts };
}
Conflict Severity: ⚠️ Warning (non-blocking - can override)
Warning Threshold: Match score < 50% triggers preference conflict modal
Modal Behavior
Trigger Timing
When Conflicts Are Detected:
- During Drag: Real-time validation highlights potential conflicts (slot border color changes)
- On Drop: Modal appears immediately when drop action is attempted
- Before Save: Final validation before saving assignment to database
Modal Dismiss Behavior
Close Button [X]:
- Same as [Cancel] button
- Does NOT save any changes
- Returns to slot assignment page with no assignment made
[Cancel] Button:
- Abort assignment
- Return to slot assignment page
- Dragged speaker returns to speaker pool sidebar
- No changes saved
Background Click:
- Modal does NOT close (prevent accidental dismissal)
- User must use [X] or [Cancel] to close
Escape Key:
- Same as [Cancel] button
- Keyboard shortcut for quick dismissal
Success States
After successful resolution (any option):
- Modal transitions to success confirmation (green checkmark)
- Shows assignment details with match score
- Auto-dismisses after 2 seconds OR user clicks [Return to Slot Assignment]
- Toast notification appears in slot assignment page: “✓ Session assigned successfully”
- Session grid updates to show new assignment
- Speaker card moves to “Assigned” section in pool
Accessibility
Keyboard Navigation
Tab Order:
- Close button [X]
- Resolution option buttons ([1], [2], [3], etc.)
- [Cancel] button (always last)
Keyboard Shortcuts:
Escape: Close modal (same as [Cancel])1,2,3: Activate corresponding resolution optionEnter: Confirm currently focused buttonTab: Navigate between buttonsShift+Tab: Navigate backwards
ARIA Attributes
html
<div role="dialog" aria-labelledby="conflict-title" aria-modal="true">
<h2 id="conflict-title">🔴 Timing Conflict Detected</h2>
<!-- Conflict type announcement -->
<div role="alert" aria-live="assertive">
Conflict Type: Room Overlap. This assignment is blocked.
</div>
<!-- Resolution options -->
<button aria-label="Option 1: Find alternative time slot that matches speaker preferences">
[1] Find Alternative Time Slot
</button>
<!-- Close button -->
<button aria-label="Close conflict resolution modal and cancel assignment">
[X]
</button>
</div>
Screen Reader Announcements
On Modal Open:
"Timing conflict detected. Room overlap. The assignment is blocked and must be resolved. 3 resolution options available. Press 1, 2, or 3 to select an option, or press Escape to cancel."
On Resolution Selection:
"Finding alternative time slots. 3 slots found. Press Enter to assign to a slot, or Tab to review options."
On Success:
"Conflict resolved. Workshop 2 has been assigned to Conference Room B from 11:00 to 12:30. Match score: 85 percent, strong match. Returning to slot assignment page."
Responsive Design
Desktop (≥1200px)
- Modal width: 800px (fixed)
- Visual timeline: Full horizontal layout
- All resolution options visible simultaneously
- Two-column layout for alternative slot suggestions
Tablet (768px - 1199px)
- Modal width: 90% viewport width (max 700px)
- Visual timeline: Condensed horizontal layout
- Resolution options: Single column, full width
- Alternative slots: Single column
Mobile (<768px)
- Modal: Full-screen overlay
- Header: Sticky at top
- Visual timeline: Simplified vertical timeline
- Resolution options: Large touch-friendly buttons (min 44px height)
- Scrollable content area
- Sticky footer with [Cancel] button
Edge Cases
Multiple Simultaneous Conflicts
Scenario: Proposed assignment violates BOTH room overlap AND speaker preference
Behavior:
- Modal shows MOST SEVERE conflict first (room overlap)
- After resolving room conflict, if new assignment still has preference conflict → second modal appears
- Conflicts are chained (resolve one at a time)
Example Flow:
- User drags speaker to conflicting room slot
- Modal shows: “🔴 Room Overlap” (error - blocking)
- User selects “Assign to Different Room” → chooses Room B
- Room conflict resolved
- Modal transitions to: “⚠️ Preference Mismatch” (warning - non-blocking)
- User can now choose to override or find better slot
Published Session Conflicts
Scenario: Conflict involves a session already published (Phase 2 or 3)
Behavior:
- Modal shows special warning badge: “⚠️ Published Session”
- Additional context: “This session is already published. Moving it requires unpublishing.”
- Reassignment option labeled: “[Reschedule Keynote (Requires Unpublish)]”
- If user selects reassignment → additional confirmation modal:
⚠️ Unpublish Confirmation Required This action will: • Unpublish Phase 2 (Speakers) from the public site • Send notification to 247 active subscribers • Revert event to Phase 1 (Topic Only) Are you sure you want to proceed? [Yes, Unpublish & Reschedule] [Cancel]
Zero Alternative Slots
Scenario: User clicks [Find Alternative Time Slot] but no available slots exist that match preferences
Behavior:
┌─────────────────────────────────────────────────────────────────────────┐
│ 🔍 Alternative Time Slots [X] │
├─────────────────────────────────────────────────────────────────────────┤
│ │
│ No available time slots found. │
│ │
│ We searched for slots matching Dr. Sarah Miller's preferences but │
│ found no available options that: │
│ • Are during afternoon (preferred time) │
│ • Have no room conflicts │
│ • Have no speaker conflicts │
│ • Meet A/V requirements │
│ │
│ Suggestions: │
│ 1. Expand search to include neutral time slots (morning/evening) │
│ 2. Assign a different speaker to this session │
│ 3. Create a new time slot by extending event schedule │
│ │
│ [Expand Search Criteria] [Assign Different Speaker] │
│ │
│ [← Back to Conflict Details] [Cancel] │
│ │
└─────────────────────────────────────────────────────────────────────────┘
Testing Checklist
Room Overlap Conflict
Speaker Double-Booked Conflict
Speaker Preference Conflict
Multiple Conflicts
Edge Cases
Accessibility
Related Wireframes
- story-5.7-slot-assignment-page.md: Main slot assignment interface where conflicts are triggered
- story-5.7-speaker-preference-panel.md: Detailed speaker preferences used for match scoring
- story-5.7-navigation-integration.md: Navigation flows to/from slot assignment page
Change Log
| Date | Version | Description | Author |
|---|---|---|---|
| 2025-12-25 | 1.0 | Initial conflict resolution wireframe | Sally (UX Expert) |