using Microsoft.EntityFrameworkCore;
using PowderCoating.Core.Entities;
using PowderCoating.Core.Enums;

namespace PowderCoating.Infrastructure.Services;

public partial class SeedDataService
{
    /// <summary>
    /// Seeds ten realistic pieces of powder coating shop equipment for the given company:
    /// two curing ovens, two spray booths, two blast units, an air compressor, an overhead
    /// conveyor, a parts washer, and a powder reclaim system.
    /// </summary>
    /// <remarks>
    /// <para>
    /// Idempotency is enforced by checking for the sentinel equipment number
    /// <c>{CompanyCode}-OVN-001</c> before inserting. If that record already exists the
    /// method returns 0 without touching the database.
    /// </para>
    /// <para>
    /// <c>IgnoreQueryFilters()</c> is used on the existence check so that a previously
    /// soft-deleted seed record is still detected and does not cause duplicate inserts.
    /// </para>
    /// <para>
    /// One equipment record is intentionally set to <see cref="EquipmentStatus.NeedsMaintenance"/>
    /// (the media blast room) to provide a realistic demo that includes equipment in a degraded
    /// state, triggering the maintenance alert banner.
    /// </para>
    /// <para>
    /// Throws <see cref="InvalidOperationException"/> if <paramref name="company"/> has no
    /// <c>CompanyCode</c> because all equipment numbers and serial-number fingerprints depend
    /// on that value.
    /// </para>
    /// </remarks>
    /// <param name="company">The tenant company to seed equipment for.</param>
    /// <returns>Number of equipment records inserted, or 0 if already seeded.</returns>
    private async Task<int> SeedEquipmentAsync(Company company)
    {
        // Validate company code
        if (string.IsNullOrWhiteSpace(company.CompanyCode))
        {
            throw new InvalidOperationException($"Company {company.CompanyName} (ID: {company.Id}) has no CompanyCode.");
        }

        // Check if seed equipment already exists by looking for specific equipment number
        var seedEquipmentNumber = $"{company.CompanyCode}-OVN-001";
        var seedEquipmentExists = await _context.Set<Equipment>()
            .IgnoreQueryFilters()
            .AnyAsync(e => e.CompanyId == company.Id && e.EquipmentNumber == seedEquipmentNumber && !e.IsDeleted);

        if (seedEquipmentExists)
        {
            return 0;
        }

        var equipment = new List<Equipment>
        {
            new Equipment
            {
                EquipmentName = "Batch Powder Coating Oven #1",
                EquipmentNumber = $"{company.CompanyCode}-OVN-001",
                EquipmentType = "Oven",
                Manufacturer = "Reliant Finishing Systems",
                Model = "RFS-2400",
                SerialNumber = "RFS240023456",
                PurchaseDate = DateTime.UtcNow.AddYears(-3),
                PurchasePrice = 45000m,
                WarrantyExpiration = DateTime.UtcNow.AddYears(-1),
                Status = EquipmentStatus.Operational,
                Location = "Bay 1",
                RecommendedMaintenanceIntervalDays = 90,
                LastMaintenanceDate = DateTime.UtcNow.AddDays(-45),
                NextScheduledMaintenance = DateTime.UtcNow.AddDays(45),
                Notes = "24'x8'x8' gas-fired batch oven, max temp 450°F",
                IsActive = true,
                CompanyId = company.Id,
                CreatedAt = DateTime.UtcNow.AddYears(-3)
            },
            new Equipment
            {
                EquipmentName = "Batch Powder Coating Oven #2",
                EquipmentNumber = $"{company.CompanyCode}-OVN-002",
                EquipmentType = "Oven",
                Manufacturer = "Reliant Finishing Systems",
                Model = "RFS-1800",
                SerialNumber = "RFS180012789",
                PurchaseDate = DateTime.UtcNow.AddYears(-5),
                PurchasePrice = 38000m,
                WarrantyExpiration = DateTime.UtcNow.AddYears(-3),
                Status = EquipmentStatus.Operational,
                Location = "Bay 2",
                RecommendedMaintenanceIntervalDays = 90,
                LastMaintenanceDate = DateTime.UtcNow.AddDays(-30),
                NextScheduledMaintenance = DateTime.UtcNow.AddDays(60),
                Notes = "18'x8'x8' gas-fired batch oven",
                IsActive = true,
                CompanyId = company.Id,
                CreatedAt = DateTime.UtcNow.AddYears(-5)
            },
            new Equipment
            {
                EquipmentName = "Automated Powder Coating Booth #1",
                EquipmentNumber = $"{company.CompanyCode}-BOOTH-001",
                EquipmentType = "Spray Booth",
                Manufacturer = "Nordson Corporation",
                Model = "Nordson ProBooth 1200",
                SerialNumber = "NOR120045678",
                PurchaseDate = DateTime.UtcNow.AddYears(-2),
                PurchasePrice = 65000m,
                WarrantyExpiration = DateTime.UtcNow.AddMonths(6),
                Status = EquipmentStatus.Operational,
                Location = "Coating Line A",
                RecommendedMaintenanceIntervalDays = 30,
                LastMaintenanceDate = DateTime.UtcNow.AddDays(-15),
                NextScheduledMaintenance = DateTime.UtcNow.AddDays(15),
                Notes = "Fully automated booth with cyclone recovery system",
                IsActive = true,
                CompanyId = company.Id,
                CreatedAt = DateTime.UtcNow.AddYears(-2)
            },
            new Equipment
            {
                EquipmentName = "Manual Powder Coating Booth #2",
                EquipmentNumber = $"{company.CompanyCode}-BOOTH-002",
                EquipmentType = "Spray Booth",
                Manufacturer = "Columbia Coatings",
                Model = "CC-Manual-800",
                SerialNumber = "CC800034512",
                PurchaseDate = DateTime.UtcNow.AddYears(-6),
                PurchasePrice = 28000m,
                WarrantyExpiration = DateTime.UtcNow.AddYears(-4),
                Status = EquipmentStatus.Operational,
                Location = "Coating Line B",
                RecommendedMaintenanceIntervalDays = 60,
                LastMaintenanceDate = DateTime.UtcNow.AddDays(-40),
                NextScheduledMaintenance = DateTime.UtcNow.AddDays(20),
                Notes = "Manual booth for small custom jobs",
                IsActive = true,
                CompanyId = company.Id,
                CreatedAt = DateTime.UtcNow.AddYears(-6)
            },
            new Equipment
            {
                EquipmentName = "Pressure Blast Cabinet",
                EquipmentNumber = $"{company.CompanyCode}-BLAST-001",
                EquipmentType = "Sandblaster",
                Manufacturer = "Empire Abrasive Equipment",
                Model = "Empire Industrial 4836",
                SerialNumber = "EMP483623890",
                PurchaseDate = DateTime.UtcNow.AddYears(-4),
                PurchasePrice = 18500m,
                WarrantyExpiration = DateTime.UtcNow.AddYears(-3),
                Status = EquipmentStatus.Operational,
                Location = "Prep Area A",
                RecommendedMaintenanceIntervalDays = 45,
                LastMaintenanceDate = DateTime.UtcNow.AddDays(-20),
                NextScheduledMaintenance = DateTime.UtcNow.AddDays(25),
                Notes = "48\"x36\" cabinet, aluminum oxide media",
                IsActive = true,
                CompanyId = company.Id,
                CreatedAt = DateTime.UtcNow.AddYears(-4)
            },
            new Equipment
            {
                EquipmentName = "Media Blast Room",
                EquipmentNumber = $"{company.CompanyCode}-BLAST-002",
                EquipmentType = "Sandblaster",
                Manufacturer = "Clemco Industries",
                Model = "Clemco BRT-1012",
                SerialNumber = "CLM101223456",
                PurchaseDate = DateTime.UtcNow.AddYears(-7),
                PurchasePrice = 42000m,
                WarrantyExpiration = DateTime.UtcNow.AddYears(-5),
                Status = EquipmentStatus.NeedsMaintenance,
                Location = "Prep Area B",
                RecommendedMaintenanceIntervalDays = 60,
                LastMaintenanceDate = DateTime.UtcNow.AddDays(-75),
                NextScheduledMaintenance = DateTime.UtcNow.AddDays(-15),
                Notes = "10'x12' walk-in blast room - needs filter replacement",
                IsActive = true,
                CompanyId = company.Id,
                CreatedAt = DateTime.UtcNow.AddYears(-7)
            },
            new Equipment
            {
                EquipmentName = "Rotary Screw Air Compressor",
                EquipmentNumber = $"{company.CompanyCode}-COMP-001",
                EquipmentType = "Compressor",
                Manufacturer = "Atlas Copco",
                Model = "GA75 VSD",
                SerialNumber = "ATC7523467",
                PurchaseDate = DateTime.UtcNow.AddYears(-3),
                PurchasePrice = 35000m,
                WarrantyExpiration = DateTime.UtcNow.AddMonths(-6),
                Status = EquipmentStatus.Operational,
                Location = "Compressor Room",
                RecommendedMaintenanceIntervalDays = 90,
                LastMaintenanceDate = DateTime.UtcNow.AddDays(-60),
                NextScheduledMaintenance = DateTime.UtcNow.AddDays(30),
                Notes = "75 HP variable speed drive compressor",
                IsActive = true,
                CompanyId = company.Id,
                CreatedAt = DateTime.UtcNow.AddYears(-3)
            },
            new Equipment
            {
                EquipmentName = "Overhead Conveyor System",
                EquipmentNumber = $"{company.CompanyCode}-CONV-001",
                EquipmentType = "Conveyor",
                Manufacturer = "Pacline Conveyors",
                Model = "PAC-500 Overhead",
                SerialNumber = "PAC50034521",
                PurchaseDate = DateTime.UtcNow.AddYears(-4),
                PurchasePrice = 52000m,
                WarrantyExpiration = DateTime.UtcNow.AddYears(-2),
                Status = EquipmentStatus.Operational,
                Location = "Main Production Line",
                RecommendedMaintenanceIntervalDays = 180,
                LastMaintenanceDate = DateTime.UtcNow.AddDays(-120),
                NextScheduledMaintenance = DateTime.UtcNow.AddDays(60),
                Notes = "500 lb capacity overhead conveyor with power and free sections",
                IsActive = true,
                CompanyId = company.Id,
                CreatedAt = DateTime.UtcNow.AddYears(-4)
            },
            new Equipment
            {
                EquipmentName = "Parts Washer System",
                EquipmentNumber = $"{company.CompanyCode}-WASH-001",
                EquipmentType = "Washer",
                Manufacturer = "Better Engineering",
                Model = "BE-4896 Power Wash",
                SerialNumber = "BE489612345",
                PurchaseDate = DateTime.UtcNow.AddYears(-5),
                PurchasePrice = 24000m,
                WarrantyExpiration = DateTime.UtcNow.AddYears(-3),
                Status = EquipmentStatus.Operational,
                Location = "Prep Area A",
                RecommendedMaintenanceIntervalDays = 30,
                LastMaintenanceDate = DateTime.UtcNow.AddDays(-10),
                NextScheduledMaintenance = DateTime.UtcNow.AddDays(20),
                Notes = "48\"x96\" spray washer with heated solution",
                IsActive = true,
                CompanyId = company.Id,
                CreatedAt = DateTime.UtcNow.AddYears(-5)
            },
            new Equipment
            {
                EquipmentName = "Powder Reclaim System",
                EquipmentNumber = $"{company.CompanyCode}-RCLM-001",
                EquipmentType = "Reclaim System",
                Manufacturer = "Gema USA",
                Model = "OptiCenter OC06",
                SerialNumber = "GEM0623456",
                PurchaseDate = DateTime.UtcNow.AddYears(-2),
                PurchasePrice = 32000m,
                WarrantyExpiration = DateTime.UtcNow.AddMonths(3),
                Status = EquipmentStatus.Operational,
                Location = "Coating Line A",
                RecommendedMaintenanceIntervalDays = 60,
                LastMaintenanceDate = DateTime.UtcNow.AddDays(-35),
                NextScheduledMaintenance = DateTime.UtcNow.AddDays(25),
                Notes = "Automatic powder recovery and color change system",
                IsActive = true,
                CompanyId = company.Id,
                CreatedAt = DateTime.UtcNow.AddYears(-2)
            }
        };

        await _context.Set<Equipment>().AddRangeAsync(equipment);
        await _context.SaveChangesAsync();

        return equipment.Count;
    }
}