using Jiaowu.Api.Domain.Academic;
using Jiaowu.Api.Infrastructure.Teaching;

namespace Jiaowu.Api.Tests;

public sealed class TeachingTaskHoursTests
{
    private static readonly Course Course = new()
    {
        Code = "TEST-01",
        Name = "测试课程",
        CollegeId = Guid.NewGuid(),
        Credits = 2,
        TotalHours = 32,
        LectureHours = 32
    };

    [Fact]
    public void Validate_accepts_matching_week_range_and_weekly_hours()
    {
        Assert.Null(TeachingTaskHours.Validate(Course, 1, 16, 2));
    }

    [Fact]
    public void Validate_reports_course_total_and_planned_hours_when_mismatched()
    {
        var result = TeachingTaskHours.Validate(Course, 1, 8, 2);

        Assert.NotNull(result);
        Assert.Contains("总学时为 32", result);
        Assert.Contains("共 16 学时", result);
    }

    [Fact]
    public void Standard_schedule_excludes_practice_hours()
    {
        var course = new Course
        {
            Code = "TEST-LAB",
            Name = "实验混合课程",
            CollegeId = Guid.NewGuid(),
            Credits = 4,
            TotalHours = 64,
            LectureHours = 48,
            PracticeHours = 16
        };

        Assert.Equal(48, TeachingTaskHours.RegularScheduleHours(course));
        Assert.True(TeachingTaskHours.TryResolveRegularWeeklyHours(
            course,
            1,
            16,
            out var weeklyHours));
        Assert.Equal(3, weeklyHours);
        Assert.Null(TeachingTaskHours.Validate(course, 1, 16, 3));

        var result = TeachingTaskHours.Validate(course, 1, 16, 4);
        Assert.NotNull(result);
        Assert.Contains("普通课表应安排 48 学时", result);
        Assert.Contains("实践学时 16", result);
    }

    [Fact]
    public void Flexible_schedule_keeps_total_workload_hours()
    {
        var course = new Course
        {
            Code = "TEST-PRACTICE",
            Name = "实践课程",
            CollegeId = Guid.NewGuid(),
            Credits = 1,
            TotalHours = 16,
            PracticeHours = 16
        };

        Assert.Null(TeachingTaskHours.Validate(
            course,
            1,
            16,
            1,
            TeachingTaskSchedulingMode.Flexible));
        Assert.Contains(
            "无需进入普通课表",
            TeachingTaskHours.Validate(course, 1, 16, 1)!);
    }
}