using Data.SeaHavenIndustries;
using Data.SeaHavenIndustries.Enums;
using Microsoft.Data.Sqlite;
using Microsoft.EntityFrameworkCore;
using SeaHaven.DataServices.Implementation;

namespace SeaHavenIndustries.Tests;

// Relational (SQLite) coverage for the uplift queue read. The in-memory provider
// evaluates LINQ in memory and cannot prove the query translates to SQL, so this
// executes GetPagedAsync against a real relational provider and asserts a dispatch
// linked only through DispatchWorkOrders still resolves its work-order context and
// closed flag through the effective primary-plus-linked work order.
public sealed class UpliftQueueReadRelationalTests
{
    [Fact]
    public async Task GetPagedAsync_ResolvesWorkOrder_ForDispatchLinkedOnlyThroughDispatchWorkOrders()
    {
        await using var connection = new SqliteConnection("DataSource=:memory:");
        await connection.OpenAsync();

        var options = new DbContextOptionsBuilder<ApplicationDbContext>()
            .UseSqlite(connection)
            .Options;

        await using var context = new SqliteUpliftTestDbContext(options);
        await context.Database.EnsureCreatedAsync();

        var vendor = new Vendor { CompanyName = "Gateway", IsActive = true };
        var workOrder = new WorkOrder
        {
            // The queue renders the internal display number; WorkerOrderNumber holds the
            // CRM external id and must not surface here.
            InternalWONumber = "WO-LINKED",
            WorkerOrderNumber = "CRM-EXT-LINKED",
            SiteCode = "SITE-Z",
            Service = "Electrical",
            WorkerOrderTitle = "Repair",
            LifecycleStatus = LifecycleStatus.Completed
        };
        context.AddRange(vendor, workOrder);
        await context.SaveChangesAsync();

        var dispatch = new Dispatch
        {
            VendorId = vendor.Id,
            DispatchNumber = "DIS-LINKED",
            Status = "Completed"
        };
        context.Dispatches.Add(dispatch);
        await context.SaveChangesAsync();

        context.DispatchWorkOrders.Add(new DispatchWorkOrder
        {
            DispatchId = dispatch.Id,
            WorkOrderId = workOrder.Id
        });
        context.DispatchUpliftRequests.Add(new DispatchUpliftRequest
        {
            DispatchId = dispatch.Id,
            Status = "Approved",
            CreatedDate = new DateTime(2026, 3, 1),
            DecidedAt = new DateTime(2026, 3, 2),
            RequiredTier = 1,
            RequestedNTE = 90m,
            NotificationStatus = "Pending"
        });
        await context.SaveChangesAsync();

        var data = new UpliftDataService(context);

        var (total, items) = await data.GetPagedAsync("Approved", null, 1, 25, CancellationToken.None);

        Assert.Equal(1, total);
        var item = Assert.Single(items);
        Assert.Equal(workOrder.Id, item.WorkOrderId);
        Assert.Equal("WO-LINKED", item.WorkOrderNumber);
        Assert.Equal("SITE-Z", item.WorkOrderSiteCode);
        Assert.Equal("Electrical", item.WorkOrderService);
        Assert.True(item.WorkOrderClosed);
    }

    [Fact]
    public async Task GetPagedAsync_ResolvesDetailModalContext_PerAccountWorkOrder()
    {
        // SH-209: dispatcher (work-order assignee navigation), technician (vendor
        // contact) and scheduled date must translate to SQL through the effective
        // work-order subquery, and each row resolves them from its own account's
        // work order only.
        await using var connection = new SqliteConnection("DataSource=:memory:");
        await connection.OpenAsync();

        var options = new DbContextOptionsBuilder<ApplicationDbContext>()
            .UseSqlite(connection)
            .Options;

        await using var context = new SqliteUpliftTestDbContext(options);
        await context.Database.EnsureCreatedAsync();

        var accountA = new Accounts { Name = "Account A" };
        var accountB = new Accounts { Name = "Account B" };
        var dispatcherA = new ApplicationUser { Id = "dispatcher-a", FirstName = "Ann", LastName = "Alpha" };
        var vendorA = new Vendor { CompanyName = "Vendor A", ContactName = "Tech A", IsActive = true };
        var vendorB = new Vendor { CompanyName = "Vendor B", ContactName = "Tech B", IsActive = true };
        context.AddRange(accountA, accountB, dispatcherA, vendorA, vendorB);
        await context.SaveChangesAsync();

        var workOrderA = new WorkOrder
        {
            InternalWONumber = "WO-A",
            WorkerOrderTitle = "Repair",
            AccountId = accountA.Id,
            AssignTo = dispatcherA.Id,
            ScheduledDate = new DateTime(2026, 5, 1, 8, 0, 0)
        };
        var workOrderB = new WorkOrder
        {
            InternalWONumber = "WO-B",
            WorkerOrderTitle = "Repair",
            AccountId = accountB.Id
        };
        context.AddRange(workOrderA, workOrderB);
        await context.SaveChangesAsync();

        var dispatchA = new Dispatch { VendorId = vendorA.Id, WorkOrderId = workOrderA.Id, DispatchNumber = "DIS-A", Status = "Scheduled" };
        var dispatchB = new Dispatch { VendorId = vendorB.Id, WorkOrderId = workOrderB.Id, DispatchNumber = "DIS-B", Status = "Scheduled" };
        context.Dispatches.AddRange(dispatchA, dispatchB);
        await context.SaveChangesAsync();

        context.DispatchUpliftRequests.AddRange(
            new DispatchUpliftRequest
            {
                DispatchId = dispatchA.Id,
                Status = "Pending",
                CreatedDate = new DateTime(2026, 4, 1),
                RequiredTier = 1,
                RequestedNTE = 100m,
                NotificationStatus = "Pending"
            },
            new DispatchUpliftRequest
            {
                DispatchId = dispatchB.Id,
                Status = "Pending",
                CreatedDate = new DateTime(2026, 4, 2),
                RequiredTier = 1,
                RequestedNTE = 200m,
                NotificationStatus = "Pending"
            });
        await context.SaveChangesAsync();

        var data = new UpliftDataService(context);

        var (total, items) = await data.GetPagedAsync("Pending", null, 1, 25, CancellationToken.None);

        Assert.Equal(2, total);
        var rowA = Assert.Single(items, i => i.WorkOrderId == workOrderA.Id);
        Assert.Equal("Ann", rowA.WorkOrderDispatcherFirstName);
        Assert.Equal("Alpha", rowA.WorkOrderDispatcherLastName);
        Assert.Equal("Tech A", rowA.TechnicianName);
        Assert.Equal(new DateTime(2026, 5, 1, 8, 0, 0), rowA.WorkOrderScheduledDate);
        var rowB = Assert.Single(items, i => i.WorkOrderId == workOrderB.Id);
        Assert.Null(rowB.WorkOrderDispatcherFirstName);
        Assert.Null(rowB.WorkOrderDispatcherLastName);
        Assert.Equal("Tech B", rowB.TechnicianName);
        Assert.Null(rowB.WorkOrderScheduledDate);
    }

    private sealed class SqliteUpliftTestDbContext : ApplicationDbContext
    {
        public SqliteUpliftTestDbContext(DbContextOptions<ApplicationDbContext> options)
            : base(options)
        {
        }

        protected override void OnModelCreating(ModelBuilder builder)
        {
            base.OnModelCreating(builder);

            // SQL Server filtered index syntax is invalid on SQLite.
            foreach (var index in builder.Model.GetEntityTypes().SelectMany(e => e.GetIndexes()))
            {
                if (index.GetFilter() != null)
                    index.SetFilter(null);
            }

            // SQLite has no rowversion type; treat as plain nullable blobs.
            foreach (var entityType in new[] { typeof(WorkOrder), typeof(Dispatch) })
            {
                var property = builder.Entity(entityType).Property("RowVersion").Metadata;
                property.ValueGenerated = Microsoft.EntityFrameworkCore.Metadata.ValueGenerated.Never;
                property.IsConcurrencyToken = false;
            }
        }
    }
}