using System.Text.Json;
using Jiaowu.Api.Controllers;
using Jiaowu.Api.Domain.Academic;
using Jiaowu.Api.Domain.Identity;
using Jiaowu.Api.Infrastructure.Persistence;
using Jiaowu.Api.Infrastructure.Timetables;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Data.Sqlite;
using Microsoft.EntityFrameworkCore;

namespace Jiaowu.Api.Tests;

public sealed class VenueDisplaysControllerTests
{
    [Fact]
    public async Task Classroom_IncludesApprovedReservationForToday()
    {
        await using 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 today = DateOnly.FromDateTime(DateTime.Now);
        var campus = new Campus { Code = "MAIN", Name = "主校区" };
        var building = new Building { Code = "A", Name = "明德楼", CampusId = campus.Id };
        var classroom = new Classroom { Code = "A101", Name = "A101", BuildingId = building.Id, Capacity = 60 };
        var college = new College { Code = "CS", Name = "计算机学院" };
        var applicant = new ApplicationUser
        {
            Id = Guid.NewGuid(), UserName = "applicant", NormalizedUserName = "APPLICANT",
            DisplayName = "张老师", CollegeId = college.Id
        };
        var term = new AcademicTerm
        {
            Code = "CURRENT", Name = "当前学期", AcademicYear = "2026-2027", Season = TermSeason.Autumn,
            StartDate = today.AddDays(-7), EndDate = today.AddDays(120), IsCurrent = true
        };
        db.AddRange(campus, building, classroom, college, applicant, term);
        db.ClassroomReservations.Add(new ClassroomReservation
        {
            ApplicantUserId = applicant.Id, ApplicantName = applicant.DisplayName,
            ApplicantCollegeId = college.Id, AcademicTermId = term.Id, ClassroomId = classroom.Id,
            ReservationDate = today, StartPeriod = 3, PeriodCount = 2, AttendeeCount = 30,
            Purpose = "学院学术讲座", ContactPhone = "13800000000",
            Status = ClassroomReservationStatus.Approved
        });
        db.VenueDisplayAnnouncements.Add(new VenueDisplayAnnouncement
        {
            Title = "消防演练提醒", Content = "今日 16:00 开展消防演练，请听从现场指引。",
            Scope = VenueDisplayAnnouncementScope.Building, TargetId = building.Id,
            IsPublished = true, IsUrgent = true
        });
        await db.SaveChangesAsync();

        var controller = new VenueDisplaysController(
            db,
            new TimetableDataService(db),
            new ClassroomReservationAvailabilityService(db));

        var result = await controller.Classroom(classroom.Id, CancellationToken.None);

        var response = Assert.IsType<OkObjectResult>(result).Value;
        using var document = JsonDocument.Parse(JsonSerializer.Serialize(response));
        var entry = Assert.Single(document.RootElement.GetProperty("Entries").EnumerateArray());
        Assert.Equal("教室借用", entry.GetProperty("CourseName").GetString());
        Assert.Equal("学院学术讲座", entry.GetProperty("ClassNames")[0].GetString());
        Assert.Equal("张老师", entry.GetProperty("TeacherNames")[0].GetString());
        Assert.True(entry.GetProperty("IsReservation").GetBoolean());
        var announcement = Assert.Single(document.RootElement.GetProperty("Announcements").EnumerateArray());
        Assert.Equal("消防演练提醒", announcement.GetProperty("Title").GetString());
        Assert.True(announcement.GetProperty("IsUrgent").GetBoolean());

        var occupied = await new ClassroomReservationAvailabilityService(db)
            .GetOccupiedClassroomIdsByPeriodAsync(term, today, [2, 3, 4, 5], CancellationToken.None);
        Assert.DoesNotContain(classroom.Id, occupied[2]);
        Assert.Contains(classroom.Id, occupied[3]);
        Assert.Contains(classroom.Id, occupied[4]);
        Assert.DoesNotContain(classroom.Id, occupied[5]);
    }
}