update to volunteer

app/internal/handlers/admin_addresses.go

@@ -4,6 +4,7 @@ import (
 	"log"
 	"net/http"
 	"strconv"
+	"time"
 
 	"github.com/patel-mann/poll-system/app/internal/models"
 	"github.com/patel-mann/poll-system/app/internal/utils"
@@ -262,12 +263,19 @@ func AssignAddressHandler(w http.ResponseWriter, r *http.Request) {
 
 	userIDStr := r.FormValue("user_id")
 	addressIDStr := r.FormValue("address_id")
+	appointmentDate := r.FormValue("appointment_date")
+	startTime := r.FormValue("time")
 
 	if userIDStr == "" || addressIDStr == "" {
 		http.Error(w, "User ID and Address ID are required", http.StatusBadRequest)
 		return
 	}
 
+	if appointmentDate == "" || startTime == "" {
+		http.Error(w, "Appointment date and start time are required", http.StatusBadRequest)
+		return
+	}
+
 	userID, err := strconv.Atoi(userIDStr)
 	if err != nil {
 		http.Error(w, "Invalid user ID", http.StatusBadRequest)
@@ -280,6 +288,27 @@ func AssignAddressHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	// Parse and validate the appointment date
+	parsedDate, err := time.Parse("2006-01-02", appointmentDate)
+	if err != nil {
+		http.Error(w, "Invalid appointment date format", http.StatusBadRequest)
+		return
+	}
+
+	// Validate that the appointment date is not in the past
+	today := time.Now().Truncate(24 * time.Hour)
+	if parsedDate.Before(today) {
+		http.Error(w, "Appointment date cannot be in the past", http.StatusBadRequest)
+		return
+	}
+
+	// Parse and validate the start time
+	_, err = time.Parse("15:04", startTime)
+	if err != nil {
+		http.Error(w, "Invalid start time format", http.StatusBadRequest)
+		return
+	}
+
 	// Verify the user exists and is associated with the current admin
 	currentAdminID := r.Context().Value("user_id").(int)
 	var userExists int
@@ -314,11 +343,27 @@ func AssignAddressHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	// Assign the address - create appointment
+	// Check if the user already has an appointment at the same date and time
+	var timeConflict int
+	err = models.DB.QueryRow(`
+		SELECT COUNT(*) FROM appointment 
+		WHERE user_id = $1 AND appointment_date = $2 AND appointment_time = $3
+	`, userID, appointmentDate, startTime).Scan(&timeConflict)
+	if err != nil {
+		log.Println("Time conflict check error:", err)
+		http.Error(w, "Database error", http.StatusInternalServerError)
+		return
+	}
+	if timeConflict > 0 {
+		http.Error(w, "User already has an appointment at this date and time", http.StatusBadRequest)
+		return
+	}
+
+	// Assign the address - create appointment with specific date and time
 	_, err = models.DB.Exec(`
 		INSERT INTO appointment (user_id, address_id, appointment_date, appointment_time, created_at, updated_at)
-		VALUES ($1, $2, CURRENT_DATE, CURRENT_TIME, NOW(), NOW())
-	`, userID, addressID)
+		VALUES ($1, $2, $3, $4, NOW(), NOW())
+	`, userID, addressID, appointmentDate, startTime)
 	if err != nil {
 		log.Println("Assignment error:", err)
 		http.Error(w, "Failed to assign address", http.StatusInternalServerError)