using Data.SeaHavenIndustries;
using Data.SeaHavenIndustries.Enums;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Options;
using SeaHaven.DataServices.Implementation;
using SeaHaven.Services.DTOs;
using SeaHaven.Services.Helpers;
using SeaHaven.Services.Implementation;
using SeaHaven.Services.Interfaces;
using SeaHaven.Services.Validation;

namespace SeaHavenIndustries.Tests;

public class WorkOrderPhase7CoexistenceTests
{
    [Fact]
    public void IngestFieldMapper_MapsDynamoStatus()
    {
        Assert.Equal("Open", WorkOrderIngestFieldMapper.MapStatus("new"));
        Assert.Equal("In Progress", WorkOrderIngestFieldMapper.MapStatus("in_progress"));
        Assert.Equal("Done", WorkOrderIngestFieldMapper.MapStatus("completed"));
    }

    [Fact]
    public async Task IngestService_CreatesThenUpdates_IdempotentByExternalId()
    {
        var options = new DbContextOptionsBuilder<ApplicationDbContext>()
            .UseInMemoryDatabase(Guid.NewGuid().ToString())
            .Options;
        await using var context = new ApplicationDbContext(options);

        var fieldLocks = new WorkOrderFieldLockService(context);
        var audit = new WorkOrderAuditService(context, fieldLocks);
        var ingest = new WorkOrderIngestService(context, new SyncFieldMergePolicy(fieldLocks, audit), fieldLocks, audit);

        var payload = new WorkOrderIngestPayloadDto
        {
            ExternalWorkOrderId = "ext-100",
            Description = "Initial",
            WoStatus = "new",
            Severity = "2",
            SiteCode = "BK1"
        };

        var create = await ingest.UpsertBatchAsync(new[] { payload });
        Assert.Equal(1, create.Created);
        Assert.Equal(0, create.Updated);

        payload.Description = "Updated via ingest";
        var update = await ingest.UpsertBatchAsync(new[] { payload });
        Assert.Equal(0, update.Created);
        Assert.Equal(1, update.Updated);

        var wo = await context.workOrders.SingleAsync();
        Assert.Equal("Updated via ingest", wo.Description);
        Assert.Equal("ext-100", wo.ExternalWorkOrderId);
    }

    [Fact]
    public async Task IngestRespectsFieldLock_AfterShocBoardCreate()
    {
        var options = new DbContextOptionsBuilder<ApplicationDbContext>()
            .UseInMemoryDatabase(Guid.NewGuid().ToString())
            .Options;
        await using var context = new ApplicationDbContext(options);

        var boardData = new WorkOrderBoardDataService(context);
        var boardService = new WorkOrderBoardService(boardData);
        var fieldLocks = new WorkOrderFieldLockService(context);
        var audit = new WorkOrderAuditService(context, fieldLocks);
        var createService = new WorkOrderBoardCreateService(
            context, boardData, boardService, audit, new WorkOrderBoardCreateValidation());
        var policy = new SyncFieldMergePolicy(fieldLocks, audit);
        var ingest = new WorkOrderIngestService(context, policy, fieldLocks, audit);

        await createService.CreateAsync(new WorkOrderBoardCreateRequestDto
        {
            WorkOrderType = WorkOrderType.PM,
            SiteCode = "BK5"
        }, "dispatcher-1");

        var wo = await context.workOrders.SingleAsync();
        wo.ExternalWorkOrderId = "ext-shoc-1";
        await context.SaveChangesAsync();

        await ingest.UpsertBatchAsync(new[]
        {
            new WorkOrderIngestPayloadDto
            {
                ExternalWorkOrderId = "ext-shoc-1",
                SiteCode = "SYNC-SITE"
            }
        });

        Assert.Equal("BK5", wo.SiteCode);
        Assert.True(await context.WorkOrderAuditLogs.AnyAsync(l => l.Action == "SyncRejected"));
    }

    [Fact]
    public async Task OpsHealth_ReturnsCoexistenceMetrics()
    {
        var options = new DbContextOptionsBuilder<ApplicationDbContext>()
            .UseInMemoryDatabase(Guid.NewGuid().ToString())
            .Options;
        await using var context = new ApplicationDbContext(options);

        context.WorkOrderFieldLocks.Add(new WorkOrderFieldLock
        {
            WorkOrderId = 1,
            FieldName = "SiteCode",
            LockedAt = DateTime.UtcNow,
            LockedByUserId = "u1"
        });
        context.WorkOrderAuditLogs.Add(new WorkOrderAuditLog
        {
            WorkOrderId = 1,
            Action = "SyncRejected",
            FieldName = "Description",
            CreatedAt = DateTime.UtcNow.AddHours(-1)
        });
        await context.SaveChangesAsync();

        var runState = new WorkOrderJobRunStateAccessor
        {
            State = { LastWeekRolledRunUtc = DateTime.UtcNow.AddDays(-1) }
        };

        var healthOptions = Options.Create(new WorkOrderOpsHealthOptions
        {
            SyncEnabled = true,
            IngestEnabled = true,
            LegacyDeprecationEnabled = true,
            LegacySunsetDate = "2026-12-31"
        });

        var service = new WorkOrderOpsHealthService(context, runState, healthOptions);
        var health = await service.GetHealthAsync();

        Assert.Equal(1, health.FieldLockCount);
        Assert.Equal(1, health.SyncRejectedLast24h);
        Assert.True(health.SyncEnabled);
        Assert.True(health.IngestEnabled);
        Assert.Equal("2026-12-31", health.LegacySunsetDate);
    }

    [Fact]
    public async Task BoardAndLegacyEndpoints_CanCoexist_InSameDatabase()
    {
        var options = new DbContextOptionsBuilder<ApplicationDbContext>()
            .UseInMemoryDatabase(Guid.NewGuid().ToString())
            .Options;
        await using var context = new ApplicationDbContext(options);

        context.workOrders.Add(new WorkOrder
        {
            WorkerOrderTitle = "Legacy row",
            Status = "Open",
            InternalWONumber = "10000001",
            istemplate = false
        });
        await context.SaveChangesAsync();

        var boardData = new WorkOrderBoardDataService(context);
        var boardService = new WorkOrderBoardService(boardData);
        var count = await context.workOrders.CountAsync();

        Assert.Equal(1, count);
        Assert.NotNull(boardService);
    }
}