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

namespace PlotLine.Controllers;

[Authorize]
public sealed class StoryAssetsController(IAssetService assets) : Controller
{
    public async Task<IActionResult> Index(int projectId)
    {
        var model = await assets.GetAssetsAsync(projectId);
        return model is null ? NotFound() : View(model);
    }

    public async Task<IActionResult> Create(int projectId)
    {
        var model = await assets.GetCreateAssetAsync(projectId);
        return model is null ? NotFound() : View("Edit", model);
    }

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

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

    [HttpPost]
    [ValidateAntiForgeryToken]
    public async Task<IActionResult> Save(StoryAssetEditViewModel model)
    {
        if (!ModelState.IsValid)
        {
            var invalidModel = await RehydrateEditModel(model);
            return invalidModel is null ? NotFound() : View("Edit", invalidModel);
        }

        int assetId;
        try
        {
            assetId = await assets.SaveAssetAsync(model);
        }
        catch (EntityImageUploadException ex)
        {
            TempData["ImageError"] = ex.Message;
            return RedirectToAction(nameof(Edit), new { id = ex.EntityId });
        }
        catch (InvalidOperationException ex)
        {
            ModelState.AddModelError(string.Empty, ex.Message);
            var editModel = await RehydrateEditModel(model);
            return editModel is null ? NotFound() : View("Edit", editModel);
        }

        return RedirectToAction(nameof(Details), new { id = assetId });
    }

    [HttpPost]
    [ValidateAntiForgeryToken]
    public async Task<IActionResult> Archive(int id, int projectId)
    {
        await assets.ArchiveAssetAsync(id);
        TempData["ArchiveMessage"] = "Asset archived. You can restore it from Archived Items.";
        return RedirectToAction(nameof(Index), new { projectId });
    }

    [HttpPost]
    [ValidateAntiForgeryToken]
    public async Task<IActionResult> AddDependency(AssetDependencyEditViewModel model, int returnAssetId)
    {
        await assets.SaveDependencyAsync(model);
        return RedirectToAction(nameof(Details), new { id = returnAssetId });
    }

    [HttpPost]
    [ValidateAntiForgeryToken]
    public async Task<IActionResult> DropDependency(AssetDependencyEditViewModel model)
    {
        if (model.SourceAssetID != model.TargetAssetID)
        {
            await assets.SaveDependencyAsync(model);
        }

        return RedirectToAction(nameof(Index), new { projectId = model.ProjectID });
    }

    [HttpPost]
    [ValidateAntiForgeryToken]
    public async Task<IActionResult> DeleteDependency(int id, int returnAssetId)
    {
        await assets.DeleteDependencyAsync(id);
        return RedirectToAction(nameof(Details), new { id = returnAssetId });
    }

    private async Task<StoryAssetEditViewModel?> RehydrateEditModel(StoryAssetEditViewModel posted)
    {
        var model = posted.StoryAssetID == 0
            ? await assets.GetCreateAssetAsync(posted.ProjectID)
            : await assets.GetEditAssetAsync(posted.StoryAssetID);
        if (model is null)
        {
            return null;
        }

        model.AssetName = posted.AssetName;
        model.Aliases = posted.Aliases;
        model.AssetKindID = posted.AssetKindID;
        model.Description = posted.Description;
        model.Importance = posted.Importance;
        model.CurrentStateID = posted.CurrentStateID;
        model.CurrentLocationID = posted.CurrentLocationID;
        model.IsResolved = posted.IsResolved;
        model.ShowInQuickAddBar = posted.ShowInQuickAddBar;
        return model;
    }
}