blazor-swm/Infrastructure/Database/Demo/VendorSeeder.cs

using Indotalent.ConfigBackEnd.Extensions;
using Indotalent.Data.Entities;
using Microsoft.EntityFrameworkCore;

namespace Indotalent.Infrastructure.Database.Demo;

public static class VendorSeeder
{
    public static async Task GenerateDataAsync(AppDbContext context)
    {
        if (await context.Vendor.AnyAsync()) return;

        var groups = await context.VendorGroup.Select(x => x.Id).ToArrayAsync();
        var categories = await context.VendorCategory.Select(x => x.Id).ToArrayAsync();

        var cities = new string[] { "New York", "Los Angeles", "Chicago", "Houston", "Phoenix", "Philadelphia", "Miami", "San Francisco", "Seattle", "Austin" };
        var streets = new string[] { "Broadway", "Main Street", "Sunset Blvd", "Fifth Avenue", "Market Street", "Peachtree Street", "Washington Blvd", "Wall Street", "Cedar Road", "Oak Street" };
        var states = new string[] { "NY", "CA", "IL", "TX", "AZ", "PA", "FL", "GA", "WA", "MA" };
        var zipCodes = new string[] { "10001", "90210", "60601", "77001", "85001", "19101", "33101", "94102", "98101", "73301" };
        var phoneNumbers = new string[] { "212-555-0199", "310-555-0188", "312-555-0177", "713-555-0166", "602-555-0155", "305-555-0144" };
        var emails = new string[] { "sales@wellness-us.com", "info@fitness-pro.net", "contact@spa-direct.com", "support@organic-supplies.us", "wholesale@gym-factory.com" };

        var random = new Random();
        var entityName = nameof(Vendor);

        var vendors = new List<Vendor>
        {
            new Vendor { Name = "Pacific Coast Skincare" },
            new Vendor { Name = "Midwest Gym Equipment" },
            new Vendor { Name = "Evergreen Holistic Labs" },
            new Vendor { Name = "Atlantic Spa & Beauty" },
            new Vendor { Name = "Sunshine State Nutriments" },
            new Vendor { Name = "Mountain Peak Fitness" },
            new Vendor { Name = "Empire State Linen" },
            new Vendor { Name = "Silicon Valley Wellness Tech" },
            new Vendor { Name = "Lone Star Spa Supplies" },
            new Vendor { Name = "Golden Gate Aromatherapy" },
            new Vendor { Name = "Liberty Fitness Machines" },
            new Vendor { Name = "Canyon Creek Supplements" },
            new Vendor { Name = "Gulf Coast Wellness Group" },
            new Vendor { Name = "Great Lakes Spa Textiles" },
            new Vendor { Name = "Blue Ridge Herbal Remedies" },
            new Vendor { Name = "Windy City Gym Solutions" },
            new Vendor { Name = "Desert Oasis Wellness" },
            new Vendor { Name = "Big Apple Fitness Distribution" },
            new Vendor { Name = "Cascade Organic Oils" },
            new Vendor { Name = "National Wellness Marketing" }
        };

        foreach (var vendor in vendors)
        {
            var autoNo = await context.GenerateAutoNumberAsync(
                entityName: entityName,
                prefixTemplate: $"{entityName.ToShortNameConsonant(3)}/{{Year}}/"
            );

            vendor.AutoNumber = autoNo;
            vendor.VendorGroupId = GetRandomValue(groups, random);
            vendor.VendorCategoryId = GetRandomValue(categories, random);
            vendor.City = GetRandomString(cities, random);
            vendor.Street = GetRandomString(streets, random);
            vendor.State = GetRandomString(states, random);
            vendor.ZipCode = GetRandomString(zipCodes, random);
            vendor.PhoneNumber = GetRandomString(phoneNumbers, random);
            vendor.EmailAddress = GetRandomString(emails, random);

            await context.Vendor.AddAsync(vendor);
        }

        await context.SaveChangesAsync();
    }

    private static T GetRandomValue<T>(T[] array, Random random)
    {
        return array[random.Next(array.Length)];
    }

    private static string GetRandomString(string[] array, Random random)
    {
        return array[random.Next(array.Length)];
    }
}