using ClosedXML.Excel;
using Jiaowu.Api.Controllers;
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 AttendanceControllerTests
{
    [Fact]
    public async Task TaskStatistics_UsesSubmittedSheetsAndExportsAllDetails()
    {
        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 college = new College { Code = "CS", Name = "计算机学院" };
        var major = new Major
        {
            Code = "080901",
            Name = "计算机科学与技术",
            CollegeId = college.Id,
            DegreeType = "工学学士"
        };
        var administrativeClass = new AdministrativeClass
        {
            Code = "CS2026-01",
            Name = "计科 2026-1 班",
            MajorId = major.Id,
            Grade = 2026
        };
        var firstStudent = new Student
        {
            StudentNumber = "202601001",
            Name = "周同学",
            AdministrativeClassId = administrativeClass.Id,
            EnrollmentYear = 2026,
            EnrollmentDate = new DateOnly(2026, 9, 1)
        };
        var secondStudent = new Student
        {
            StudentNumber = "202601002",
            Name = "吴同学",
            AdministrativeClassId = administrativeClass.Id,
            EnrollmentYear = 2026,
            EnrollmentDate = new DateOnly(2026, 9, 1)
        };
        var course = new Course
        {
            Code = "CS101",
            Name = "程序设计基础",
            CollegeId = college.Id,
            Credits = 4,
            TotalHours = 64,
            LectureHours = 48,
            PracticeHours = 16,
            Nature = CourseNature.MajorRequired,
            AssessmentMethod = AssessmentMethod.Examination
        };
        var term = new AcademicTerm
        {
            Code = "2026-1",
            Name = "2026—2027 学年第一学期",
            AcademicYear = "2026-2027",
            Season = TermSeason.Autumn,
            StartDate = new DateOnly(2026, 9, 1),
            EndDate = new DateOnly(2027, 1, 20)
        };
        var task = new TeachingTask
        {
            TaskNumber = "2026-1-CS101-01",
            Name = "程序设计基础教学班",
            AcademicTermId = term.Id,
            CourseId = course.Id,
            Capacity = 60,
            Status = TeachingTaskStatus.Published
        };
        db.AddRange(
            college,
            major,
            administrativeClass,
            firstStudent,
            secondStudent,
            course,
            term,
            task);
        await db.SaveChangesAsync();

        db.AttendanceSheets.AddRange(
            new AttendanceSheet
            {
                TeachingTaskId = task.Id,
                Name = "第1周点名",
                AttendanceDate = new DateTime(2026, 9, 3),
                Status = AttendanceSheetStatus.Submitted,
                Records =
                [
                    new AttendanceRecord
                    {
                        StudentId = firstStudent.Id,
                        Status = AttendanceStatus.Present
                    },
                    new AttendanceRecord
                    {
                        StudentId = secondStudent.Id,
                        Status = AttendanceStatus.Absent
                    }
                ]
            },
            new AttendanceSheet
            {
                TeachingTaskId = task.Id,
                Name = "第2周点名",
                AttendanceDate = new DateTime(2026, 9, 10),
                Status = AttendanceSheetStatus.Submitted,
                Records =
                [
                    new AttendanceRecord
                    {
                        StudentId = firstStudent.Id,
                        Status = AttendanceStatus.Late
                    },
                    new AttendanceRecord
                    {
                        StudentId = secondStudent.Id,
                        Status = AttendanceStatus.Excused
                    }
                ]
            },
            new AttendanceSheet
            {
                TeachingTaskId = task.Id,
                Name = "未提交点名",
                AttendanceDate = new DateTime(2026, 9, 17),
                Status = AttendanceSheetStatus.Draft,
                Records =
                [
                    new AttendanceRecord
                    {
                        StudentId = firstStudent.Id,
                        Status = AttendanceStatus.Absent
                    }
                ]
            });
        await db.SaveChangesAsync();

        var controller = new AttendanceController(db, new AllDataScope());
        var result = await controller.GetTaskStatistics(
            task.Id,
            CancellationToken.None);

        var ok = Assert.IsType<OkObjectResult>(result);
        var statistics = Assert.IsType<AttendanceCourseStatistics>(ok.Value);
        Assert.Equal(2, statistics.Summary.SubmittedSheetCount);
        Assert.Equal(4, statistics.Summary.RecordCount);
        Assert.Equal(3, statistics.Summary.RequiredCount);
        Assert.Equal(66.7m, statistics.Summary.OverallAttendanceRate);
        Assert.Equal(0, statistics.Summary.PerfectAttendanceCount);
        Assert.Equal(2, statistics.Students.Count);
        Assert.Equal(0m, statistics.Students[0].AttendanceRate);
        Assert.Equal(100m, statistics.Students[1].AttendanceRate);

        var exportResult = await controller.ExportTaskStatistics(
            task.Id,
            CancellationToken.None);
        var file = Assert.IsType<FileContentResult>(exportResult);
        using var workbook = new XLWorkbook(new MemoryStream(file.FileContents));
        Assert.NotNull(workbook.Worksheet("课程概览"));
        Assert.Equal(
            3,
            workbook.Worksheet("学生出勤明细").LastRowUsed()!.RowNumber());
        Assert.Equal(
            3,
            workbook.Worksheet("历次点名趋势").LastRowUsed()!.RowNumber());
    }

    private sealed class AllDataScope : ICurrentUserDataScope
    {
        public CurrentUserScope Current { get; } = new(
            Guid.NewGuid(),
            "测试管理员",
            null,
            DataScope.All,
            new HashSet<string>([SystemRoles.SuperAdmin]));
    }
}