feat: add party-size queueing and call modes

server/internal/httpapi/queue_counts.go

@@ -0,0 +1,29 @@
+package httpapi
+
+import (
+	"calllinesystem/server/internal/model"
+
+	"gorm.io/gorm"
+)
+
+type ticketPeopleTotals struct {
+	TicketCount int64 `gorm:"column:ticket_count"`
+	PeopleCount int64 `gorm:"column:people_count"`
+}
+
+func queueTotals(db *gorm.DB, projectID, sessionID, status string) (ticketPeopleTotals, error) {
+	var totals ticketPeopleTotals
+	err := db.Model(&model.QueueTicket{}).
+		Select("count(*) AS ticket_count, COALESCE(sum(party_size), 0) AS people_count").
+		Where("project_id = ? AND queue_session_id = ? AND status = ?", projectID, sessionID, status).
+		Scan(&totals).Error
+	return totals, err
+}
+
+func ticketsPartySize(tickets []model.QueueTicket) int {
+	total := 0
+	for _, ticket := range tickets {
+		total += ticket.PartySize
+	}
+	return total
+}