F8WebAI/backend/AgriculturalPlatform.Api/Data/DbSeeder.cs

using AgriculturalPlatform.Api.Models;

namespace AgriculturalPlatform.Api.Data;

/// <summary>初始化数据（仅在空库时执行）</summary>
public static class DbSeeder
{
    public static void Seed(AppDbContext db)
    {
        if (db.Users.Any()) return;

        var now = DateTime.Now;

        // ---------- 组织 ----------
        var company = new Organization
        {
            Type = OrgType.Company,
            Name = "绿源农产品收购有限公司",
            ContactPerson = "王建国",
            Phone = "13800000001",
            Address = "河南省郑州市中牟县官渡大道66号",
            TaxNo = "91410100MA3X8K7Q2B",
            CreatedAt = now
        };
        var stationEast = new Organization
        {
            Type = OrgType.Station,
            Name = "城东收购站",
            ContactPerson = "李强",
            Phone = "13800000002",
            Address = "中牟县官渡镇城东村",
            CreatedAt = now
        };
        var stationWest = new Organization
        {
            Type = OrgType.Station,
            Name = "城西收购站",
            ContactPerson = "赵敏",
            Phone = "13800000003",
            Address = "中牟县韩寺镇城西村",
            CreatedAt = now
        };
        var individual = new Organization
        {
            Type = OrgType.Individual,
            Name = "张伟（个体收购）",
            ContactPerson = "张伟",
            Phone = "13800000004",
            Address = "中牟县刁家乡",
            TaxNo = "410122197501011234",
            CreatedAt = now
        };

        db.Organizations.AddRange(company, stationEast, stationWest, individual);
        db.SaveChanges();
        stationEast.ParentId = company.Id;
        stationWest.ParentId = company.Id;
        db.SaveChanges();

        // ---------- 用户（默认密码均为 123456） ----------
        var users = new List<User>
        {
            new() { Username = "admin", PasswordHash = BCrypt.Net.BCrypt.HashPassword("123456"), RealName = "系统管理员", Phone = "13800000000", Role = UserRole.SuperAdmin, CreatedAt = now },
            new() { Username = "company", PasswordHash = BCrypt.Net.BCrypt.HashPassword("123456"), RealName = "王建国", Phone = "13800000001", Role = UserRole.CompanyAdmin, OrgId = company.Id, CreatedAt = now },
            new() { Username = "station1", PasswordHash = BCrypt.Net.BCrypt.HashPassword("123456"), RealName = "李强", Phone = "13800000002", Role = UserRole.StationStaff, OrgId = stationEast.Id, CreatedAt = now },
            new() { Username = "station2", PasswordHash = BCrypt.Net.BCrypt.HashPassword("123456"), RealName = "赵敏", Phone = "13800000003", Role = UserRole.StationStaff, OrgId = stationWest.Id, CreatedAt = now },
            new() { Username = "individual", PasswordHash = BCrypt.Net.BCrypt.HashPassword("123456"), RealName = "张伟", Phone = "13800000004", Role = UserRole.Individual, OrgId = individual.Id, CreatedAt = now }
        };
        db.Users.AddRange(users);
        db.SaveChanges();

        // ---------- 品种 ----------
        var products = new List<Product>
        {
            new() { Name = "小麦", Category = "粮食", Unit = "公斤", Spec = "水分≤13%，容重≥750g/L", Price = 2.42m },
            new() { Name = "玉米", Category = "粮食", Unit = "公斤", Spec = "水分≤14%，杂质≤1%", Price = 2.18m },
            new() { Name = "水稻", Category = "粮食", Unit = "公斤", Spec = "出糙率≥77%", Price = 2.68m },
            new() { Name = "花生", Category = "油料", Unit = "公斤", Spec = "果仁饱满，出仁率≥70%", Price = 7.80m },
            new() { Name = "大蒜", Category = "蔬菜", Unit = "公斤", Spec = "5cm以上，干度达标", Price = 4.50m },
            new() { Name = "西红柿", Category = "蔬菜", Unit = "公斤", Spec = "一级果，单果150g以上", Price = 2.60m },
            new() { Name = "苹果", Category = "水果", Unit = "公斤", Spec = "红富士，直径75mm以上", Price = 5.20m },
            new() { Name = "棉花", Category = "经济作物", Unit = "公斤", Spec = "衣分≥38%", Price = 15.60m }
        };
        db.Products.AddRange(products);
        db.SaveChanges();

        // ---------- 农户 ----------
        var farmers = new List<Farmer>
        {
            new() { Name = "刘老汉", IdCard = "410122197003120011", Gender = "男", Phone = "13911110001", Village = "城东村一组", Address = "城东村一组12号", BankName = "中牟农商银行", BankAccount = "6228480012345678901", CreditScore = 92 },
            new() { Name = "陈秀英", IdCard = "410122196806250022", Gender = "女", Phone = "13911110002", Village = "城东村二组", Address = "城东村二组8号", BankName = "中牟农商银行", BankAccount = "6228480012345678902", CreditScore = 88 },
            new() { Name = "张铁柱", IdCard = "410122198204170033", Gender = "男", Phone = "13911110003", Village = "城西村一组", Address = "城西村一组21号", BankName = "农业银行", BankAccount = "6228480012345678903", CreditScore = 85 },
            new() { Name = "王翠花", IdCard = "410122197512080044", Gender = "女", Phone = "13911110004", Village = "城西村三组", Address = "城西村三组5号", BankName = "邮政储蓄银行", BankAccount = "6228480012345678904", CreditScore = 90 },
            new() { Name = "赵大勇", IdCard = "410122199003300055", Gender = "男", Phone = "13911110005", Village = "官渡镇贾庄村", Address = "贾庄村16号", BankName = "中牟农商银行", BankAccount = "6228480012345678905", CreditScore = 82 },
            new() { Name = "孙秀兰", IdCard = "410122196511150066", Gender = "女", Phone = "13911110006", Village = "韩寺镇马家村", Address = "马家村9号", BankName = "农业银行", BankAccount = "6228480012345678906", CreditScore = 78 },
            new() { Name = "李保田", IdCard = "410122197807210077", Gender = "男", Phone = "13911110007", Village = "刁家乡水沱寨村", Address = "水沱寨村3号", BankName = "邮政储蓄银行", BankAccount = "6228480012345678907", CreditScore = 86 },
            new() { Name = "周桂芳", IdCard = "410122198906060088", Gender = "女", Phone = "13911110008", Village = "官渡镇前于村", Address = "前于村28号", BankName = "中牟农商银行", BankAccount = "6228480012345678908", CreditScore = 91 }
        };
        db.Farmers.AddRange(farmers);
        db.SaveChanges();

        // ---------- 历史收购单（近30天，用于报表与大屏演示） ----------
        var rnd = new Random(20260812);
        var purchaserIds = new[] { company.Id, stationEast.Id, stationWest.Id, individual.Id };
        var productIds = products.Select(p => p.Id).ToArray();
        var farmerIds = farmers.Select(f => f.Id).ToArray();
        var userIds = users.Select(u => u.Id).ToArray();

        var orders = new List<PurchaseOrder>();
        for (int day = 29; day >= 0; day--)
        {
            int count = rnd.Next(3, 8);
            for (int i = 0; i < count; i++)
            {
                var createAt = now.Date.AddDays(-day).AddHours(rnd.Next(7, 18)).AddMinutes(rnd.Next(0, 59));
                var productId = productIds[rnd.Next(productIds.Length)];
                var gross = rnd.Next(5000, 32000);
                var tare = rnd.Next(3200, 9000);
                var net = gross - tare;
                if (net <= 0) continue;
                var price = products.First(p => p.Id == productId).Price + (decimal)rnd.Next(-10, 10) / 10m;

                orders.Add(new PurchaseOrder
                {
                    OrderNo = $"CG{createAt:yyyyMMdd}-{(day * 10 + i):D4}",
                    FarmerId = farmerIds[rnd.Next(farmerIds.Length)],
                    ProductId = productId,
                    PurchaserOrgId = purchaserIds[rnd.Next(purchaserIds.Length)],
                    Grade = new[] { "一等", "二等", "三等" }[rnd.Next(3)],
                    Unit = "公斤",
                    UnitPrice = price,
                    GrossWeight = gross,
                    TareWeight = tare,
                    NetWeight = net,
                    Amount = Math.Round(net * price, 2),
                    WeighCount = 2,
                    Status = PurchaseStatus.Completed,
                    OperatorId = userIds[rnd.Next(userIds.Length)],
                    WeighInAt = createAt,
                    WeighOutAt = createAt.AddMinutes(rnd.Next(15, 50)),
                    CreatedAt = createAt,
                    UpdatedAt = createAt
                });
            }
        }
        db.PurchaseOrders.AddRange(orders);
        db.SaveChanges();

        // ---------- 历史付款（对应部分订单） ----------
        var payOrders = orders.Where(o => o.Status == PurchaseStatus.Completed)
            .OrderBy(o => o.CreatedAt).Take(120).ToList();
        var methods = new[] { PayMethod.Wechat, PayMethod.Alipay, PayMethod.BankTransfer, PayMethod.Cash };
        var payments = payOrders.Select((o, idx) => new PaymentRecord
        {
            PayNo = $"ZF{o.CreatedAt:yyyyMMdd}-{idx + 1:D4}",
            PurchaseOrderId = o.Id,
            FarmerId = o.FarmerId,
            Amount = o.Amount,
            Method = methods[rnd.Next(methods.Length)],
            Status = PayStatus.Success,
            TradeNo = $"TRADE{rnd.Next(100000000, 999999999)}",
            OperatorId = o.OperatorId,
            PaidAt = o.WeighOutAt,
            CreatedAt = o.WeighOutAt!.Value,
            Notes = $"收购单 {o.OrderNo} 货款结算"
        }).ToList();
        db.PaymentRecords.AddRange(payments);
        db.SaveChanges();

        // ---------- 历史发票（对应部分订单，反向开票） ----------
        var invoiceOrders = orders.Where(o => o.Status == PurchaseStatus.Completed)
            .OrderByDescending(o => o.CreatedAt).Take(80).ToList();
        var invoices = invoiceOrders.Select((o, idx) => new Invoice
        {
            InvoiceNo = $"FP{o.CreatedAt:yyyyMMdd}-{idx + 1:D4}",
            InvoiceKind = "农产品收购发票",
            FarmerId = o.FarmerId,
            PurchaserOrgId = o.PurchaserOrgId,
            PurchaseOrderId = o.Id,
            ProductId = o.ProductId,
            Quantity = o.NetWeight,
            Unit = o.Unit,
            UnitPrice = o.UnitPrice,
            Amount = o.Amount,
            TaxRate = 0m,
            TaxAmount = 0m,
            IssueDate = o.WeighOutAt ?? o.CreatedAt,
            Status = InvoiceStatus.Issued,
            OperatorId = o.OperatorId,
            CreatedAt = o.WeighOutAt ?? o.CreatedAt
        }).ToList();
        db.Invoices.AddRange(invoices);
        db.SaveChanges();
    }
}