//go:build test
// +build test

package admin

import (
	"context"
	"net/http"
	"testing"
	"time"

	"crussell/db"
	"crussell/testutils"
	"crussell/handlers/bookings"
	"crussell/testutils/fixtures"
)

// TestGetOverlappingBookingsByTime verifies the new overlapping bookings endpoint
func TestGetOverlappingBookingsByTime(t *testing.T) {
	testutils.SetupTestDB(t)

	adminID, err := fixtures.CreateTestAdminUser(db.DB)
	if err != nil {
		t.Fatalf("failed to create admin user: %v", err)
	}
	defer fixtures.DeleteUser(db.DB, adminID)

	userID, err := fixtures.CreateTestUser(db.DB)
	if err != nil {
		t.Fatalf("failed to create test user: %v", err)
	}
	defer fixtures.DeleteUser(db.DB, userID)

	serviceID, err := fixtures.CreateTestService(db.DB)
	if err != nil {
		t.Fatalf("failed to create test service: %v", err)
	}
	defer fixtures.DeleteService(db.DB, serviceID)

	startTime := time.Date(2026, 3, 16, 10, 0, 0, 0, time.UTC)
	bookingID, err := fixtures.CreateTestBookingAtTime(db.DB, userID, serviceID, startTime)
	if err != nil {
		t.Fatalf("failed to create test booking: %v", err)
	}
	defer fixtures.DeleteBooking(db.DB, bookingID)

	handler := http.HandlerFunc(bookings.GetOverlappingBookingsByTimeHandler)
	w := makeAdminRequest(handler, "GET", "/api/admin/bookings/overlapping?start=2026-03-16T09:00:00Z&end=2026-03-16T11:00:00Z", nil)

	if w.Code != http.StatusOK {
		t.Errorf("expected status 200, got %d. body: %s", w.Code, w.Body.String())
	}

	var resp bookings.OverlappingBookingsResponse
	if err := parseResponseBody(w, &resp); err != nil {
		t.Fatalf("failed to parse response: %v", err)
	}

	if len(resp.Bookings) != 1 {
		t.Errorf("expected 1 overlapping booking, got %d", len(resp.Bookings))
	}
}

// TestGetBookingsByDateRange verifies the new bookings by date range endpoint
func TestGetBookingsByDateRange(t *testing.T) {
	testutils.SetupTestDB(t)

	adminID, err := fixtures.CreateTestAdminUser(db.DB)
	if err != nil {
		t.Fatalf("failed to create admin user: %v", err)
	}
	defer fixtures.DeleteUser(db.DB, adminID)

	userID, err := fixtures.CreateTestUser(db.DB)
	if err != nil {
		t.Fatalf("failed to create test user: %v", err)
	}
	defer fixtures.DeleteUser(db.DB, userID)

	serviceID, err := fixtures.CreateTestService(db.DB)
	if err != nil {
		t.Fatalf("failed to create test service: %v", err)
	}
	defer fixtures.DeleteService(db.DB, serviceID)

	startTime := time.Date(2026, 3, 16, 10, 0, 0, 0, time.UTC)
	bookingID, err := fixtures.CreateTestBookingAtTime(db.DB, userID, serviceID, startTime)
	if err != nil {
		t.Fatalf("failed to create test booking: %v", err)
	}
	defer fixtures.DeleteBooking(db.DB, bookingID)

	handler := http.HandlerFunc(bookings.GetBookingsByDateRangeHandler)
	w := makeAdminRequest(handler, "GET", "/api/admin/bookings/by-date-range?start=2026-03-16&end=2026-03-16", nil)

	if w.Code != http.StatusOK {
		t.Errorf("expected status 200, got %d. body: %s", w.Code, w.Body.String())
	}

	var resp bookings.OverlappingBookingsResponse
	if err := parseResponseBody(w, &resp); err != nil {
		t.Fatalf("failed to parse response: %v", err)
	}

	if len(resp.Bookings) != 1 {
		t.Errorf("expected 1 booking, got %d", len(resp.Bookings))
	}
}

// TestAdminRescheduleBooking verifies the new reschedule endpoint
func TestAdminRescheduleBooking(t *testing.T) {
	testutils.SetupTestDB(t)

	adminID, err := fixtures.CreateTestAdminUser(db.DB)
	if err != nil {
		t.Fatalf("failed to create admin user: %v", err)
	}
	defer fixtures.DeleteUser(db.DB, adminID)

	userID, err := fixtures.CreateTestUser(db.DB)
	if err != nil {
		t.Fatalf("failed to create test user: %v", err)
	}
	defer fixtures.DeleteUser(db.DB, userID)

	serviceID, err := fixtures.CreateTestService(db.DB)
	if err != nil {
		t.Fatalf("failed to create test service: %v", err)
	}
	defer fixtures.DeleteService(db.DB, serviceID)

	startTime := time.Now().Add(48 * time.Hour).Truncate(time.Second)
	bookingID, err := fixtures.CreateTestBookingAtTime(db.DB, userID, serviceID, startTime)
	if err != nil {
		t.Fatalf("failed to create test booking: %v", err)
	}
	defer fixtures.DeleteBooking(db.DB, bookingID)

	newStartTime := startTime.Add(2 * time.Hour)
	req := map[string]interface{}{
		"start_time": newStartTime.Format(time.RFC3339),
	}

	handler := http.HandlerFunc(bookings.AdminRescheduleBookingHandler)
	w := makeAdminRequest(handler, "PUT", "/api/admin/bookings/"+bookingID+"/reschedule", req)

	if w.Code != http.StatusOK {
		t.Errorf("expected status 200, got %d. body: %s", w.Code, w.Body.String())
	}

	var dbStartTime time.Time
	err = db.DB.QueryRow(context.Background(),
		"SELECT start_time FROM bookings WHERE id = $1", bookingID).Scan(&dbStartTime)
	if err != nil {
		t.Fatalf("failed to query booking: %v", err)
	}
	if !dbStartTime.Truncate(time.Second).Equal(newStartTime.Truncate(time.Second)) {
		t.Errorf("expected booking start_time %v, got %v", newStartTime, dbStartTime)
	}
}