@model ImportIndexViewModel
@{
    ViewData["Title"] = "JSON Import";
    var preview = Model.Preview;
}

<div class="page-heading compact">
    <div>
        <p class="eyebrow">Tools</p>
        <h1>JSON Import</h1>
        <p class="lead-text">Paste or upload a Phase 1A package, preview it, then import a new project when validation passes.</p>
    </div>
    <a class="btn btn-outline-secondary" asp-controller="Projects" asp-action="Index">Back to projects</a>
</div>

@if (!string.IsNullOrWhiteSpace(Model.StatusMessage))
{
    <div class="alert alert-warning">@Model.StatusMessage</div>
}

<section class="edit-panel import-panel">
    <form asp-action="Preview" method="post" enctype="multipart/form-data">
        <div class="row g-3">
            <div class="col-12">
                <label asp-for="JsonFile" class="form-label">Upload JSON file</label>
                <input asp-for="JsonFile" class="form-control" type="file" accept=".json,application/json" />
                <div class="form-text">Uploading a file replaces the pasted text for this preview.</div>
            </div>
            <div class="col-12">
                <label asp-for="JsonText" class="form-label">JSON package</label>
                <textarea asp-for="JsonText" class="form-control import-json-input" rows="22" spellcheck="false"></textarea>
            </div>
        </div>
        <div class="button-row mt-3">
            <button class="btn btn-primary" type="submit">Validate and preview</button>
            <button class="btn btn-outline-secondary" type="button" data-copy-sample>Use sample JSON</button>
        </div>
    </form>
</section>

@if (preview is not null)
{
    <section class="list-section import-preview-section mt-3">
        <div class="import-preview-heading">
            <div>
                <p class="eyebrow">Preview</p>
                <h2>@(preview.Package?.Project.Title ?? "Import package")</h2>
            </div>
            <div class="import-counts">
                <span><strong>@preview.BookCount</strong> books</span>
                <span><strong>@preview.ChapterCount</strong> chapters</span>
                <span><strong>@preview.SceneCount</strong> scenes</span>
            </div>
        </div>

        @if (preview.Validation.Errors.Any())
        {
            <div class="alert alert-warning">
                <strong>Validation needs attention</strong>
                <ul class="mb-0 mt-2">
                    @foreach (var error in preview.Validation.Errors)
                    {
                        <li>@error</li>
                    }
                </ul>
            </div>
        }

        @if (preview.Validation.Warnings.Any())
        {
            <div class="alert alert-info">
                <strong>Import notes</strong>
                <ul class="mb-0 mt-2">
                    @foreach (var warning in preview.Validation.Warnings)
                    {
                        <li>@warning</li>
                    }
                </ul>
            </div>
        }

        @if (preview.Package is not null)
        {
            <div class="import-tree">
                @foreach (var book in preview.Package.Books.OrderBy(x => x.SeriesOrder))
                {
                    <article class="import-tree-book">
                        <h3>Book @book.SeriesOrder: @(string.IsNullOrWhiteSpace(book.Subtitle) ? book.Title : $"{book.Title}: {book.Subtitle}")</h3>
                        @foreach (var chapter in book.Chapters.OrderBy(x => x.Order))
                        {
                            <div class="import-tree-chapter">
                                <strong>Chapter @chapter.ChapterNumber: @chapter.Title</strong>
                                <ul>
                                    @foreach (var scene in chapter.Scenes.OrderBy(x => x.Order))
                                    {
                                        <li>Scene @scene.SceneNumber: @scene.Title</li>
                                    }
                                </ul>
                            </div>
                        }
                    </article>
                }
            </div>

            <form asp-action="Import" method="post" class="import-confirm-form mt-3">
                <input asp-for="JsonText" type="hidden" />
                @if (preview.HasDuplicateProjectTitle)
                {
                    <div class="form-check import-duplicate-confirm">
                        <input asp-for="AllowDuplicateProjectTitle" class="form-check-input" />
                        <label asp-for="AllowDuplicateProjectTitle" class="form-check-label">
                            Import anyway and create another project with this same title.
                        </label>
                    </div>
                }
                <button class="btn btn-primary mt-3" type="submit" disabled="@(!Model.CanImport)">Import project</button>
            </form>
        }
    </section>
}

<script type="application/json" id="importSampleJson">@Html.Raw(System.Text.Json.JsonSerializer.Serialize(ImportIndexViewModel.SampleJson))</script>

@section Scripts {
    <script>
        (() => {
            const button = document.querySelector("[data-copy-sample]");
            const textarea = document.querySelector("#JsonText");
            const sample = document.querySelector("#importSampleJson");
            if (!button || !textarea || !sample) return;
            button.addEventListener("click", () => {
                textarea.value = JSON.parse(sample.textContent);
                textarea.focus();
            });
        })();
    </script>
}