Created Turnpike, event attendee and volunteer management

Built after prototype, Traverse, an attendee and volunteer list
maintainer.

handle_kiosk.go

@@ -0,0 +1,132 @@
+package main
+
+import (
+	"net/http"
+	"strconv"
+)
+
+// handleKioskGet returns the volunteer's profile, current shift assignments, and
+// available open shifts in their department. Authenticated by volunteer token only —
+// no JWT required.
+func (app *App) handleKioskGet(w http.ResponseWriter, r *http.Request) {
+	token := r.PathValue("token")
+	a, err := app.getAttendeeByToken(token)
+	if err != nil || a == nil {
+		writeError(w, "not found", http.StatusNotFound)
+		return
+	}
+
+	v, _ := app.getVolunteerByAttendeeID(a.ID)
+	if v == nil {
+		writeError(w, "no volunteer record linked to this token", http.StatusNotFound)
+		return
+	}
+
+	assigned, _ := app.listShiftsForVolunteer(v.ID)
+	if assigned == nil {
+		assigned = []Shift{}
+	}
+
+	var available []Shift
+	if v.DepartmentID != nil {
+		available, _ = app.listOpenShiftsForDept(*v.DepartmentID)
+	}
+	if available == nil {
+		available = []Shift{}
+	}
+
+	writeJSON(w, map[string]any{
+		"volunteer": v,
+		"shifts":    assigned,
+		"available": available,
+	})
+}
+
+// handleKioskClaim assigns the volunteer to a shift.
+// Without ?force=true it returns 409 with conflicting shifts on overlap.
+func (app *App) handleKioskClaim(w http.ResponseWriter, r *http.Request) {
+	token := r.PathValue("token")
+	shiftID, err := strconv.Atoi(r.PathValue("id"))
+	if err != nil {
+		writeError(w, "invalid shift id", http.StatusBadRequest)
+		return
+	}
+
+	a, err := app.getAttendeeByToken(token)
+	if err != nil || a == nil {
+		writeError(w, "not found", http.StatusNotFound)
+		return
+	}
+	v, _ := app.getVolunteerByAttendeeID(a.ID)
+	if v == nil {
+		writeError(w, "no volunteer linked to this token", http.StatusNotFound)
+		return
+	}
+
+	force := r.URL.Query().Get("force") == "true"
+
+	if !force {
+		conflicts, err := app.checkShiftConflict(v.ID, shiftID)
+		if err != nil {
+			writeError(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+		if len(conflicts) > 0 {
+			w.Header().Set("Content-Type", "application/json")
+			w.WriteHeader(http.StatusConflict)
+			writeJSON(w, map[string]any{
+				"conflict":           true,
+				"conflicting_shifts": conflicts,
+			})
+			return
+		}
+	}
+
+	shift, err := app.getShift(shiftID)
+	if err != nil || shift == nil {
+		writeError(w, "shift not found", http.StatusNotFound)
+		return
+	}
+	if shift.Capacity > 0 {
+		count, _ := app.shiftAssignedCount(shiftID)
+		if count >= shift.Capacity {
+			writeError(w, "shift is full", http.StatusConflict)
+			return
+		}
+	}
+
+	if err := app.assignShift(v.ID, shiftID); err != nil {
+		writeError(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	app.handleKioskGet(w, r)
+}
+
+// handleKioskUnclaim removes the volunteer from a shift.
+func (app *App) handleKioskUnclaim(w http.ResponseWriter, r *http.Request) {
+	token := r.PathValue("token")
+	shiftID, err := strconv.Atoi(r.PathValue("id"))
+	if err != nil {
+		writeError(w, "invalid shift id", http.StatusBadRequest)
+		return
+	}
+
+	a, err := app.getAttendeeByToken(token)
+	if err != nil || a == nil {
+		writeError(w, "not found", http.StatusNotFound)
+		return
+	}
+	v, _ := app.getVolunteerByAttendeeID(a.ID)
+	if v == nil {
+		writeError(w, "no volunteer linked to this token", http.StatusNotFound)
+		return
+	}
+
+	if err := app.unassignShift(v.ID, shiftID); err != nil {
+		writeError(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	app.handleKioskGet(w, r)
+}