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

namespace Jiaowu.Api.Tests;

public sealed class ScheduleSettingsControllerTests
{
    [Fact]
    public async Task Batch_constraints_assign_same_classroom_scope_to_all_tasks()
    {
        await using var connection = new SqliteConnection("Data Source=:memory:");
        await connection.OpenAsync();
        var options = new DbContextOptionsBuilder<AppDbContext>()
            .UseSqlite(connection)
            .Options;
        await using var db = new AppDbContext(options);
        await db.Database.EnsureCreatedAsync();

        var campus = new Campus { Code = "MAIN", Name = "主校区" };
        var building = new Building
        {
            Code = "J1",
            Name = "第一教学楼",
            Campus = campus
        };
        var classroom = new Classroom
        {
            Code = "J1-201",
            Name = "J1-201",
            Building = building,
            Capacity = 80
        };
        var college = new College { Code = "CS", Name = "计算机学院" };
        var course = new Course
        {
            Code = "CS101",
            Name = "程序设计基础",
            College = college,
            Credits = 4,
            TotalHours = 64,
            LectureHours = 48,
            PracticeHours = 16
        };
        var term = new AcademicTerm
        {
            Code = "2026-F",
            Name = "2026 秋季",
            AcademicYear = "2026-2027",
            Season = TermSeason.Autumn,
            StartDate = new DateOnly(2026, 9, 7),
            EndDate = new DateOnly(2027, 1, 17)
        };
        var firstTask = NewTask("TASK-01", course, term);
        var secondTask = NewTask("TASK-02", course, term);
        db.AddRange(
            campus,
            building,
            classroom,
            college,
            course,
            term,
            firstTask,
            secondTask);
        await db.SaveChangesAsync();

        var controller = new ScheduleSettingsController(db);
        var result = await controller.SaveConstraintsBatch(
            new TeachingTaskScheduleConstraintBatchRequest(
                term.Id,
                [firstTask.Id, secondTask.Id],
                null,
                null,
                null,
                true,
                campus.Id,
                building.Id,
                [classroom.Id],
                false,
                null,
                null),
            CancellationToken.None);

        Assert.IsType<OkObjectResult>(result);
        db.ChangeTracker.Clear();
        var constraints = await db.TeachingTaskScheduleConstraints
            .Include(item => item.AllowedClassrooms)
            .OrderBy(item => item.TeachingTaskId)
            .ToListAsync();
        Assert.Equal(2, constraints.Count);
        Assert.All(constraints, constraint =>
        {
            Assert.True(constraint.RequiresClassroom);
            Assert.Equal(campus.Id, constraint.RequiredCampusId);
            Assert.Equal(building.Id, constraint.RequiredBuildingId);
            Assert.Equal(
                classroom.Id,
                Assert.Single(constraint.AllowedClassrooms).ClassroomId);
        });
    }

    private static TeachingTask NewTask(
        string taskNumber,
        Course course,
        AcademicTerm term) =>
        new()
        {
            TaskNumber = taskNumber,
            Name = $"{course.Name}教学班",
            Course = course,
            AcademicTerm = term,
            Capacity = 60,
            WeeklyHours = 4,
            StartWeek = 1,
            EndWeek = 16,
            Status = TeachingTaskStatus.Published
        };
}