Timeslot Generation Logic

This is the engine behind availability.

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System checks all layers:

Order of priority:

✔ 1. Staff working hours

✔ 2. Staff breaks

✔ 3. Staff time-off

✔ 4. ServiceConfig rules

✔ 5. Staff–Service mapping rules

✔ 6. Lead time

✔ 7. Max advance days

✔ 8. Disabled dates

✔ 9. Existing appointments

✔ 10. Holds (not expired)

If ANY layer blocks → timeslot not shown.

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Flow Summary

Customer selects date →
  Load staff list →
    For each staff:
        Check weekly availability
        Remove breaks
        Remove time-off
        Apply serviceConfig rules
        Apply mapping rules
        Cut by lead time
        Cut by max advance days
        Remove disabled dates
        Remove conflicting appointments
        Remove valid holds
Generate clean list of timeslots