using Data.SeaHavenIndustries;
using FluentAssertions;
using Microsoft.EntityFrameworkCore;
using SeaHaven.DataServices.Implementation;
using SeaHaven.Services.DTOs;
using SeaHaven.Services.Implementation;
using SeaHaven.Services.Validation;
using Xunit;

namespace Api.SeaHavenIndustries.Tests;

public class LocationServiceTests
{
    private static ApplicationDbContext NewContext()
    {
        var options = new DbContextOptionsBuilder<ApplicationDbContext>()
            .UseInMemoryDatabase(databaseName: Guid.NewGuid().ToString())
            .Options;
        return new ApplicationDbContext(options);
    }

    private static LocationService NewService(ApplicationDbContext ctx) =>
        new(new LocationDataService(ctx), new CreateLocationValidation(), new UpdateLocationValidation());

    private static Locations SeedLocation(ApplicationDbContext ctx, string name, string? city = null, string? status = "Active")
    {
        var loc = new Locations { Name = name, City = city, Status = status, CreatedDate = DateTime.Now };
        ctx.Locations.Add(loc);
        ctx.SaveChanges();
        return loc;
    }

    [Fact]
    public async Task CreateLocationFromRequestAsync_PersistsMappedFields()
    {
        using var ctx = NewContext();
        var service = NewService(ctx);

        await service.CreateLocationFromRequestAsync(new LocationCreateRequestDTO
        {
            Name = "Warehouse",
            Title = "Main WH",
            Address = "1 Depot Rd",
            City = "Austin",
            State = "TX",
            ZipCode = "73301",
            Phone = "555-1000",
            ContactEmail = "wh@example.com",
            Status = "Active"
        }, CancellationToken.None);

        var entity = ctx.Locations.Single();
        entity.Name.Should().Be("Warehouse");
        entity.Title.Should().Be("Main WH");
        entity.Address1.Should().Be("1 Depot Rd");
        entity.City.Should().Be("Austin");
        entity.State.Should().Be("TX");
        entity.Zip.Should().Be("73301");
        entity.PhoneNumber.Should().Be("555-1000");
        entity.Email.Should().Be("wh@example.com");
        entity.Status.Should().Be("Active");
    }

    [Fact]
    public async Task GetLocationListPagedAsync_FiltersBySearchAndMapsShape()
    {
        using var ctx = NewContext();
        SeedLocation(ctx, "Alpha Site", "Austin");
        SeedLocation(ctx, "Beta Site", "Dallas");
        SeedLocation(ctx, "Gamma Yard", "Austin");

        var page = await NewService(ctx).GetLocationListPagedAsync(1, 10, "Austin", CancellationToken.None);

        page.Items.Should().HaveCount(2);
        page.TotalCount.Should().Be(2);
        page.Items.All(l => l.City == "Austin").Should().BeTrue();
        page.Items.Select(l => l.Name).Should().NotBeNull();
    }

    [Fact]
    public async Task GetLocationDetailAsync_ReturnsMappedDtoOrNull()
    {
        using var ctx = NewContext();
        var existing = SeedLocation(ctx, "Depot", "Houston");

        var service = NewService(ctx);
        var found = await service.GetLocationDetailAsync(existing.Id, CancellationToken.None);
        var missing = await service.GetLocationDetailAsync(existing.Id + 999, CancellationToken.None);

        missing.Should().BeNull();
        found.Should().NotBeNull();
        found!.Name.Should().Be("Depot");
        found.City.Should().Be("Houston");
    }

    [Fact]
    public async Task UpdateLocationFromRequestAsync_UpdatesFieldsAndThrowsWhenMissing()
    {
        using var ctx = NewContext();
        var existing = SeedLocation(ctx, "Old", "Round Rock");

        await NewService(ctx).UpdateLocationFromRequestAsync(existing.Id, new LocationUpdateRequestDTO
        {
            Name = "New",
            Address = "9 New St",
            City = "Plano",
            Status = "Inactive"
        }, CancellationToken.None);

        var row = ctx.Locations.Single();
        row.Name.Should().Be("New");
        row.Address1.Should().Be("9 New St");
        row.City.Should().Be("Plano");
        row.Status.Should().Be("Inactive");

        var act = () => NewService(ctx).UpdateLocationFromRequestAsync(existing.Id + 999, new LocationUpdateRequestDTO { Name = "X" }, CancellationToken.None);
        await act.Should().ThrowAsync<KeyNotFoundException>();
    }

    [Fact]
    public async Task DeleteLocationByIdAsync_RemovesAndReturnsFalseWhenMissing()
    {
        using var ctx = NewContext();
        var existing = SeedLocation(ctx, "Gone", "Cedar Park");

        var removed = await NewService(ctx).DeleteLocationByIdAsync(existing.Id, CancellationToken.None);
        var again = await NewService(ctx).DeleteLocationByIdAsync(existing.Id, CancellationToken.None);

        removed.Should().BeTrue();
        again.Should().BeFalse();
        ctx.Locations.Should().BeEmpty();
    }
}