using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Authorization;
using PlotLine.Services;
using PlotLine.ViewModels;

namespace PlotLine.Controllers;

[Authorize]
public sealed class WriterController(
    IWriterWorkspaceService writerWorkspace,
    IWritingScheduleService writingSchedule) : Controller
{
    public async Task<IActionResult> Index(int? projectId)
    {
        var model = await writerWorkspace.GetDashboardAsync(projectId);
        return View(model);
    }

    public async Task<IActionResult> Chapter(int id)
    {
        var model = await writerWorkspace.GetChapterWorkflowAsync(id);
        return model is null ? NotFound() : View(model);
    }

    public async Task<IActionResult> SchedulePreview(int? writingPlanId)
    {
        var model = await writingSchedule.GetSchedulePreviewAsync(writingPlanId);
        return View(model);
    }

    [HttpPost]
    [ValidateAntiForgeryToken]
    public async Task<IActionResult> GenerateSchedule(int writingPlanId)
    {
        try
        {
            var items = await writingSchedule.GenerateSchedule(writingPlanId);
            TempData["SchedulePreviewMessage"] = $"{items.Count} item{(items.Count == 1 ? "" : "s")} generated.";
        }
        catch (InvalidOperationException ex)
        {
            TempData["SchedulePreviewError"] = ex.Message;
        }

        return RedirectToAction(nameof(SchedulePreview), new { writingPlanId });
    }

    [HttpPost]
    [ValidateAntiForgeryToken]
    public async Task<IActionResult> DeleteGeneratedSchedule(int writingPlanId)
    {
        await writingSchedule.DeleteScheduleAsync(writingPlanId);
        TempData["SchedulePreviewMessage"] = "Generated schedule deleted.";
        return RedirectToAction(nameof(SchedulePreview), new { writingPlanId });
    }

    [HttpPost]
    [ValidateAntiForgeryToken]
    public async Task<IActionResult> SaveChapterGoal(ChapterGoalEditViewModel model)
    {
        await writerWorkspace.SaveChapterGoalAsync(model);
        return RedirectToAction(nameof(Chapter), new { id = model.ChapterID });
    }
}