using Socialize.Api.Modules.CalendarIntegrations.Services;

namespace Socialize.Tests.CalendarIntegrations;

public class CalendarExportFeedTests
{
    [Fact]
    public void Token_regeneration_changes_private_feed_secret()
    {
        string firstToken = CalendarExportFeedTokenService.GenerateToken();
        string secondToken = CalendarExportFeedTokenService.GenerateToken();

        Assert.NotEqual(firstToken, secondToken);
        Assert.NotEqual(
            CalendarExportFeedTokenService.HashToken(firstToken),
            CalendarExportFeedTokenService.HashToken(secondToken));
    }

    [Fact]
    public void HashToken_allows_token_authorization_boundary_checks_without_plaintext_comparison()
    {
        string token = CalendarExportFeedTokenService.GenerateToken();
        string storedHash = CalendarExportFeedTokenService.HashToken(token);

        Assert.Equal(storedHash, CalendarExportFeedTokenService.HashToken(token));
        Assert.NotEqual(storedHash, CalendarExportFeedTokenService.HashToken(CalendarExportFeedTokenService.GenerateToken()));
    }

    [Fact]
    public void Build_emits_valid_ics_for_user_work_without_sensitive_discussion_details()
    {
        CalendarExportFeedBuilder builder = new();
        string ics = builder.Build(
            "Socialize my work",
            [
                new CalendarExportFeedEvent(
                    "content-1@socialize",
                    "Launch reel",
                    new DateTimeOffset(2026, 5, 10, 9, 0, 0, TimeSpan.Zero),
                    new DateTimeOffset(2026, 5, 10, 9, 30, 0, TimeSpan.Zero),
                    IsAllDay: false,
                    "Status: Draft\nWorkspace: Brand A\nClient: Client\nCampaign: Spring launch",
                    "https://app.test/app/content/content-1"),
                new CalendarExportFeedEvent(
                    "approval-1@socialize",
                    "Approval due: Launch reel",
                    new DateTimeOffset(2026, 5, 12, 0, 0, 0, TimeSpan.Zero),
                    new DateTimeOffset(2026, 5, 13, 0, 0, 0, TimeSpan.Zero),
                    IsAllDay: true,
                    "Stage: Client review\nState: Pending\nWorkspace: Brand A",
                    "https://app.test/app/content/content-1"),
            ]);

        Assert.StartsWith("BEGIN:VCALENDAR", ics);
        Assert.Contains("SUMMARY:Launch reel", ics);
        Assert.Contains("SUMMARY:Approval due: Launch reel", ics);
        Assert.Contains("DTSTART:20260510T090000Z", ics);
        Assert.Contains("DTSTART;VALUE=DATE:20260512", ics);
        Assert.DoesNotContain("approval-token", ics);
        Assert.DoesNotContain("Mother's Day", ics);
        Assert.EndsWith("END:VCALENDAR" + Environment.NewLine, ics);
    }
}