using Jiaowu.Api.Domain.Academic;
using Jiaowu.Api.Infrastructure.Persistence;
using Microsoft.Data.Sqlite;
using Microsoft.EntityFrameworkCore;

namespace Jiaowu.Api.Tests;

public sealed class PersistenceTests : IAsyncLifetime
{
    private readonly SqliteConnection _connection = new("Data Source=:memory:");
    private AppDbContext _db = null!;

    public async Task InitializeAsync()
    {
        await _connection.OpenAsync();
        var options = new DbContextOptionsBuilder<AppDbContext>()
            .UseSqlite(_connection)
            .Options;
        _db = new AppDbContext(options);
        await _db.Database.EnsureCreatedAsync();
    }

    public async Task DisposeAsync()
    {
        await _db.DisposeAsync();
        await _connection.DisposeAsync();
    }

    [Fact]
    public async Task Catalog_codes_are_unique()
    {
        _db.Campuses.Add(new Campus { Code = "MAIN", Name = "主校区" });
        await _db.SaveChangesAsync();

        _db.Campuses.Add(new Campus { Code = "MAIN", Name = "另一个校区" });

        await Assert.ThrowsAsync<DbUpdateException>(() => _db.SaveChangesAsync());
    }

    [Fact]
    public async Task Organization_relations_can_be_persisted()
    {
        var campus = new Campus { Code = "EAST", Name = "东校区" };
        var college = new College
        {
            Code = "ART",
            Name = "艺术学院",
            CampusId = campus.Id
        };
        var major = new Major
        {
            Code = "1305",
            Name = "设计学",
            CollegeId = college.Id,
            DegreeType = "艺术学学士"
        };
        _db.AddRange(campus, college, major);
        await _db.SaveChangesAsync();

        var saved = await _db.Majors
            .Include(x => x.College)
            .ThenInclude(x => x!.Campus)
            .SingleAsync();

        Assert.Equal("东校区", saved.College!.Campus!.Name);
    }
}