using FastEndpoints;
using Microsoft.EntityFrameworkCore;
using Socialize.Api.Data;
using Socialize.Api.Infrastructure.Security;
using Socialize.Api.Modules.ContentItems.Data;

namespace Socialize.Api.Modules.ContentItems.Handlers;

public record GetContentItemsRequest(Guid? WorkspaceId, Guid? ClientId, Guid? CampaignId);

public record ContentItemDto(
    Guid Id,
    Guid WorkspaceId,
    Guid ClientId,
    Guid CampaignId,
    string Title,
    string PublicationMessage,
    string PublicationTargets,
    string? Hashtags,
    string Status,
    DateTimeOffset? DueDate,
    string CurrentRevisionLabel,
    int CurrentRevisionNumber);

public class GetContentItemsHandler(
    AppDbContext dbContext,
    AccessScopeService accessScopeService)
    : Endpoint<GetContentItemsRequest, IReadOnlyCollection<ContentItemDto>>
{
    public override void Configure()
    {
        Get("/api/content-items");
        Options(o => o.WithTags("Content Items"));
    }

    public override async Task HandleAsync(GetContentItemsRequest request, CancellationToken ct)
    {
        IQueryable<ContentItem> query = dbContext.ContentItems.AsQueryable();

        if (!accessScopeService.IsManager(User))
        {
            IReadOnlyCollection<Guid> workspaceScopeIds = await accessScopeService.GetAccessibleWorkspaceIdsAsync(User, ct);
            IReadOnlyCollection<Guid> clientScopeIds = User.GetClientScopeIds();
            IReadOnlyCollection<Guid> campaignScopeIds = User.GetCampaignScopeIds();

            query = query.Where(item => workspaceScopeIds.Contains(item.WorkspaceId));

            if (clientScopeIds.Count > 0)
            {
                query = query.Where(item => clientScopeIds.Contains(item.ClientId));
            }

            if (campaignScopeIds.Count > 0)
            {
                query = query.Where(item => campaignScopeIds.Contains(item.CampaignId));
            }
        }

        if (request.WorkspaceId.HasValue)
        {
            query = query.Where(item => item.WorkspaceId == request.WorkspaceId.Value);
        }

        if (request.CampaignId.HasValue)
        {
            query = query.Where(item => item.CampaignId == request.CampaignId.Value);
        }

        if (request.ClientId.HasValue)
        {
            query = query.Where(item => item.ClientId == request.ClientId.Value);
        }

        List<ContentItemDto> items = await query
            .OrderBy(item => item.DueDate)
            .ThenBy(item => item.Title)
            .Select(item => new ContentItemDto(
                item.Id,
                item.WorkspaceId,
                item.ClientId,
                item.CampaignId,
                item.Title,
                item.PublicationMessage,
                item.PublicationTargets,
                item.Hashtags,
                item.Status,
                item.DueDate,
                item.CurrentRevisionLabel,
                item.CurrentRevisionNumber))
            .ToListAsync(ct);

        await SendOkAsync(items, ct);
    }
}