using Jiaowu.Api.Controllers;
using Jiaowu.Api.Contracts;
using Jiaowu.Api.Domain.Academic;
using Jiaowu.Api.Domain.Identity;
using Jiaowu.Api.Infrastructure.Auth;
using Jiaowu.Api.Infrastructure.Persistence;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Data.Sqlite;
using Microsoft.EntityFrameworkCore;

namespace Jiaowu.Api.Tests;

public sealed class PhysicalFitnessControllerTests
{
    [Fact]
    public async Task UpsertRecords_CalculatesAndPersistsItemSnapshot()
    {
        await using var fixture = await Fixture.CreateAsync();
        var controller = new PhysicalFitnessController(fixture.Db, fixture.AllScope);

        var action = await controller.UpsertRecords(fixture.Batch.Id,
            new UpsertPhysicalTestRecordsRequest([
                new PhysicalTestRecordRequest(
                    fixture.Student.StudentNumber, PhysicalTestRecordStatus.Normal, 1,
                    175, 70, 5040, 6.7m, 24.9m, 273, 19, 197, null, "已复核")
            ]), CancellationToken.None);

        Assert.IsType<OkObjectResult>(action);
        fixture.Db.ChangeTracker.Clear();
        var saved = await fixture.Db.PhysicalTestRecords.Include(x => x.Items).SingleAsync();
        Assert.Equal(100m, saved.TotalScore);
        Assert.Equal(PhysicalTestGrade.Excellent, saved.Grade);
        Assert.Equal(9, saved.Items.Count);
        Assert.Equal("已复核", saved.Notes);
        Assert.Equal(PhysicalTestBatchStatus.Draft, (await fixture.Db.PhysicalTestBatches.FindAsync(fixture.Batch.Id))!.Status);

        fixture.Db.ChangeTracker.Clear();
        var secondController = new PhysicalFitnessController(fixture.Db, fixture.AllScope);
        var updated = await secondController.UpsertRecords(fixture.Batch.Id,
            new UpsertPhysicalTestRecordsRequest([
                new PhysicalTestRecordRequest(
                    fixture.Student.StudentNumber, PhysicalTestRecordStatus.Normal, 1,
                    175, 70, 4920, 6.8m, 23.1m, 268, 18, 202, null, "二次复核")
            ]), CancellationToken.None);
        Assert.IsType<OkObjectResult>(updated);
        fixture.Db.ChangeTracker.Clear();
        var replacement = await fixture.Db.PhysicalTestRecords.Include(x => x.Items).SingleAsync();
        Assert.Equal(9, replacement.Items.Count);
        Assert.Equal("二次复核", replacement.Notes);
    }

    [Fact]
    public async Task CollegeViewer_OnlySeesRecordsInsideCollegeScope()
    {
        await using var fixture = await Fixture.CreateAsync(includeSecondCollege: true);
        fixture.Db.PhysicalTestRecords.AddRange(
            new PhysicalTestRecord { PhysicalTestBatchId = fixture.Batch.Id, StudentId = fixture.Student.Id, GradeLevel = 1, Status = PhysicalTestRecordStatus.Exempt, SpecialReason = "测试" },
            new PhysicalTestRecord { PhysicalTestBatchId = fixture.Batch.Id, StudentId = fixture.OtherStudent!.Id, GradeLevel = 1, Status = PhysicalTestRecordStatus.Exempt, SpecialReason = "测试" });
        await fixture.Db.SaveChangesAsync();
        var controller = new PhysicalFitnessController(fixture.Db, fixture.CollegeScope);

        var action = Assert.IsType<OkObjectResult>(await controller.GetRecords(
            fixture.Batch.Id, pageSize: 30, ct: CancellationToken.None));
        var json = System.Text.Json.JsonSerializer.Serialize(action.Value);

        Assert.Contains(fixture.Student.StudentNumber, json);
        Assert.DoesNotContain(fixture.OtherStudent.StudentNumber, json);

        var batches = Assert.IsType<OkObjectResult>(await controller.GetBatches(
            pageSize: 20, ct: CancellationToken.None));
        var page = Assert.IsType<CursorPagedResult<object>>(batches.Value);
        var visibleCount = page.Items.Single().GetType().GetProperty("RecordCount")!.GetValue(page.Items.Single());
        Assert.Equal(1, visibleCount);
    }

    [Fact]
    public async Task Publish_RejectsEmptyBatch()
    {
        await using var fixture = await Fixture.CreateAsync();
        var controller = new PhysicalFitnessController(fixture.Db, fixture.AllScope);

        var action = await controller.Publish(fixture.Batch.Id, CancellationToken.None);

        var conflict = Assert.IsType<ConflictObjectResult>(action);
        Assert.Contains("没有体测记录", Assert.IsType<ProblemDetails>(conflict.Value).Detail);
    }

    private sealed class Fixture : IAsyncDisposable
    {
        private readonly SqliteConnection connection;
        public AppDbContext Db { get; }
        public College College { get; }
        public Student Student { get; }
        public Student? OtherStudent { get; }
        public PhysicalTestBatch Batch { get; }
        public ICurrentUserDataScope AllScope { get; }
        public ICurrentUserDataScope CollegeScope { get; }

        private Fixture(SqliteConnection connection, AppDbContext db, College college,
            Student student, Student? otherStudent, PhysicalTestBatch batch)
        {
            this.connection = connection;
            Db = db;
            College = college;
            Student = student;
            OtherStudent = otherStudent;
            Batch = batch;
            AllScope = new TestScope(null, DataScope.All, SystemRoles.PhysicalEducationAdmin);
            CollegeScope = new TestScope(college.Id, DataScope.College, SystemRoles.CollegeAdmin);
        }

        public static async Task<Fixture> CreateAsync(bool includeSecondCollege = false)
        {
            var connection = new SqliteConnection("Data Source=:memory:");
            await connection.OpenAsync();
            var db = new AppDbContext(new DbContextOptionsBuilder<AppDbContext>().UseSqlite(connection).Options);
            await db.Database.EnsureCreatedAsync();
            var college = new College { Code = "CS", Name = "计算机学院" };
            var major = new Major { Code = "SE", Name = "软件工程", CollegeId = college.Id, DegreeType = "工学" };
            var administrativeClass = new AdministrativeClass { Code = "SE202601", Name = "软件工程 2026 级 1 班", MajorId = major.Id, Grade = 2026 };
            var student = new Student { StudentNumber = "202600001", Name = "学生甲", Gender = Gender.Male, AdministrativeClassId = administrativeClass.Id, EnrollmentYear = 2026, EnrollmentDate = new DateOnly(2026, 9, 1) };
            Student? otherStudent = null;
            db.AddRange(college, major, administrativeClass, student);
            if (includeSecondCollege)
            {
                var otherCollege = new College { Code = "ART", Name = "艺术学院" };
                var otherMajor = new Major { Code = "ART", Name = "艺术学", CollegeId = otherCollege.Id, DegreeType = "艺术学" };
                var otherClass = new AdministrativeClass { Code = "ART202601", Name = "艺术 2026 级 1 班", MajorId = otherMajor.Id, Grade = 2026 };
                otherStudent = new Student { StudentNumber = "202600002", Name = "学生乙", Gender = Gender.Female, AdministrativeClassId = otherClass.Id, EnrollmentYear = 2026, EnrollmentDate = new DateOnly(2026, 9, 1) };
                db.AddRange(otherCollege, otherMajor, otherClass, otherStudent);
            }
            var batch = new PhysicalTestBatch { Name = "秋季体测", AcademicYear = "2026-2027", TestDate = new DateOnly(2026, 10, 15), StandardVersion = "国家学生体质健康标准（2014年修订）" };
            db.Add(batch);
            await db.SaveChangesAsync();
            return new Fixture(connection, db, college, student, otherStudent, batch);
        }

        public async ValueTask DisposeAsync()
        {
            await Db.DisposeAsync();
            await connection.DisposeAsync();
        }
    }

    private sealed class TestScope(Guid? collegeId, DataScope dataScope, string role) : ICurrentUserDataScope
    {
        public CurrentUserScope Current { get; } = new(
            Guid.NewGuid(), "测试用户", collegeId, dataScope, new HashSet<string>([role]));
    }
}