@model StoryIntelligenceProgressViewModel
@{
    ViewData["Title"] = "Review assets";
    var assetCandidates = Model.AssetReview.Candidates.ToList();
}

<section class="onboarding-shell" aria-labelledby="story-asset-title">
    <div class="onboarding-panel onboarding-review-panel story-review-page">
        <div class="onboarding-copy story-review-heading">
            <p class="eyebrow">Story Intelligence</p>
            <h1 id="story-asset-title">Review Assets</h1>
            <p>Review important object suggestions that need a create, same-asset, or ignore decision.</p>
        </div>

        @if (TempData["OnboardingStoryIntelligenceError"] is string error)
        {
            <div class="alert alert-danger">@error</div>
        }
        @if (TempData["OnboardingStoryIntelligenceMessage"] is string message)
        {
            <div class="alert alert-success">@message</div>
        }

        <section class="story-review-chapter-list" aria-label="Asset review">
            @if (Model.AssetReview.Candidates.Count == 0)
            {
                <div class="story-review-note">
                    <strong>No asset decisions are waiting.</strong>
                    <p class="mb-0">Assets are already up to date, or there were no story-significant asset suggestions ready to import.</p>
                </div>
                <div class="onboarding-actions">
                    <a class="btn btn-outline-secondary" asp-action="StoryIntelligenceReviewCentre" asp-route-batchId="@Model.BatchID">Back to Review Centre</a>
                    <form asp-action="ImportStoryIntelligenceAssets" method="post" data-story-review-form>
                        <input type="hidden" name="BatchID" value="@Model.BatchID" />
                        <button class="btn btn-primary" type="submit" data-busy-label="Saving assets...">Mark reviewed</button>
                    </form>
                </div>
            }
            else
            {
                <div class="story-review-card-actions">
                    <span class="story-review-page-status">
                        Page @Model.AssetReview.PageNumber.ToString("N0") of @Model.AssetReview.PageCount.ToString("N0")
                        &middot; Showing @Model.AssetReview.ShowingStart.ToString("N0")-@Model.AssetReview.ShowingEnd.ToString("N0") of @Model.AssetReview.PendingCandidateCount.ToString("N0") pending
                    </span>
                    <button class="btn btn-outline-secondary btn-sm" type="button" data-asset-bulk="expand">Expand all</button>
                    <button class="btn btn-outline-secondary btn-sm" type="button" data-asset-bulk="collapse">Collapse all</button>
                </div>

                <form asp-action="ImportStoryIntelligenceAssets" method="post" data-asset-review-form data-story-review-form>
                    <input type="hidden" name="BatchID" value="@Model.BatchID" />
                    <input type="hidden" name="PageNumber" value="@Model.AssetReview.PageNumber" />
                    <div class="story-character-card-grid">
                        @for (var i = 0; i < assetCandidates.Count; i++)
                        {
                            var candidate = assetCandidates[i];
                            <details class="story-character-card" open data-asset-card data-asset-existing-match="@candidate.IsExistingMatch.ToString().ToLowerInvariant()">
                                <summary class="story-review-card-header">
                                    <span>
                                        <strong>@candidate.AssetName</strong>
                                        <small>@candidate.Category · @candidate.AppearsInScenes.ToString("N0") scene@(candidate.AppearsInScenes == 1 ? string.Empty : "s")</small>
                                    </span>
                                    <em>@candidate.Confidence</em>
                                </summary>

                                <input type="hidden" name="Assets[@i].Key" value="@candidate.Key" />

                                <div class="story-character-card__body" data-asset-key="@candidate.Key" data-asset-name="@candidate.AssetName">
                                    <dl>
                                        <div><dt>First appearance</dt><dd>@Display(candidate.ExampleFirstAppearance)</dd></div>
                                        <div><dt>Possible owner</dt><dd>@Display(candidate.PossibleOwner)</dd></div>
                                        <div><dt>Existing match</dt><dd>@(candidate.ExistingAssetName ?? "None")</dd></div>
                                    </dl>

                                    @if (candidate.PossibleAliases.Any())
                                    {
                                        <div class="story-review-note">
                                            <strong>Possible aliases</strong>
                                            <p>@string.Join(", ", candidate.PossibleAliases)</p>
                                        </div>
                                    }

                                    @if (!string.IsNullOrWhiteSpace(candidate.ExampleContext))
                                    {
                                        <div class="story-review-note">
                                            <strong>Scene context</strong>
                                            <p>@candidate.ExampleContext</p>
                                        </div>
                                    }

                                    @if (candidate.IsExistingMatch)
                                    {
                                        <div class="story-review-note">
                                            <strong>Existing asset matched</strong>
                                            <p>@candidate.AssetName is linked to @candidate.ExistingAssetName.</p>
                                        </div>
                                    }

                                    @if (candidate.IsExistingMatch)
                                    {
                                        <input type="hidden" name="Assets[@i].Action" value="@StoryIntelligenceAssetImportActions.LinkExisting" data-asset-action />
                                        <input type="hidden" name="Assets[@i].ExistingAssetID" value="@candidate.ExistingAssetID" />
                                    }
                                    else
                                    {
                                        <fieldset class="story-character-actions">
                                            <legend>Decision</legend>
                                            <label>
                                                <input type="radio" name="Assets[@i].Action" value="@StoryIntelligenceAssetImportActions.CreateNew" checked data-asset-action />
                                                Create new asset
                                            </label>
                                            <label>
                                                <input type="radio" name="Assets[@i].Action" value="@StoryIntelligenceAssetImportActions.LinkExisting" data-asset-action />
                                                Same asset as
                                            </label>
                                            <label>
                                                <input type="radio" name="Assets[@i].Action" value="@StoryIntelligenceAssetImportActions.Ignore" data-asset-action />
                                                Ignore
                                            </label>
                                        </fieldset>

                                        <div data-asset-import-name-panel>
                                            <label class="form-label" for="asset-import-name-@i">Import name</label>
                                            <input id="asset-import-name-@i" class="form-control" name="Assets[@i].ImportName" value="@candidate.ImportName" />
                                        </div>

                                        <div data-asset-same-panel hidden>
                                            <label class="form-label" for="asset-same-target-@i">Same asset as</label>
                                            <select id="asset-same-target-@i" class="form-select" data-asset-unified-target>
                                                <option value="">Choose asset...</option>
                                                @foreach (var group in Model.AssetReview.AssetTargetOptions
                                                    .Where(target => !IsSelfTarget(target, candidate))
                                                    .GroupBy(target => target.GroupName))
                                                {
                                                    <optgroup label="@group.Key">
                                                        @foreach (var target in group)
                                                        {
                                                            <option value="@target.Value">@TargetLabel(target)</option>
                                                        }
                                                    </optgroup>
                                                }
                                            </select>
                                            <input type="hidden" name="Assets[@i].ExistingAssetID" data-asset-existing-target />
                                            <input type="hidden" name="Assets[@i].AliasTargetKey" data-asset-alias-target />
                                        </div>
                                    }
                                </div>
                            </details>
                        }
                    </div>

                    <div class="onboarding-actions">
                        <span class="text-muted">
                            Page @Model.AssetReview.PageNumber.ToString("N0") of @Model.AssetReview.PageCount.ToString("N0")
                            &middot; Showing @Model.AssetReview.ShowingStart.ToString("N0")-@Model.AssetReview.ShowingEnd.ToString("N0") of @Model.AssetReview.PendingCandidateCount.ToString("N0") pending
                        </span>
                        @if (Model.AssetReview.HasPreviousPage)
                        {
                            <button class="btn btn-outline-secondary" type="submit" name="intent" value="previous" data-busy-label="Saving page...">Previous</button>
                        }
                        @if (Model.AssetReview.HasNextPage)
                        {
                            <button class="btn btn-primary" type="submit" name="intent" value="next" data-busy-label="Saving page...">Next</button>
                        }
                        else
                        {
                            <button class="btn btn-primary" type="submit" name="intent" value="save" data-busy-label="Saving assets...">Save asset decisions</button>
                        }
                    </div>
                </form>
            }
        </section>
    </div>
</section>

@section Scripts {
    <script>
        (() => {
            const form = document.querySelector("[data-asset-review-form]");
            if (!form) return;

            const cards = () => Array.from(form.querySelectorAll("[data-asset-card]"));
            const setAction = (card, action) => {
                const input = card.querySelector(`[data-asset-action][value="${action}"]`);
                if (input) {
                    input.checked = true;
                    updateCard(card);
                }
            };
            const actionFor = (card) => card.querySelector("[data-asset-action]:checked")?.value || "@StoryIntelligenceAssetImportActions.CreateNew";
            const applyUnifiedTarget = (card) => {
                const selector = card.querySelector("[data-asset-unified-target]");
                const existing = card.querySelector("[data-asset-existing-target]");
                const pending = card.querySelector("[data-asset-alias-target]");
                const value = selector?.value || "";
                if (existing && selector) existing.value = value.startsWith("existing:") ? value.substring("existing:".length) : "";
                if (pending && selector) pending.value = value.startsWith("candidate:") ? value.substring("candidate:".length) : "";
            };
            const updateAliasTargets = () => {
                cards().forEach(applyUnifiedTarget);
            };
            const updateCard = (card) => {
                const action = actionFor(card);
                const namePanel = card.querySelector("[data-asset-import-name-panel]");
                const samePanel = card.querySelector("[data-asset-same-panel]");
                applyUnifiedTarget(card);
                if (namePanel) namePanel.hidden = action === "@StoryIntelligenceAssetImportActions.Ignore" || action === "@StoryIntelligenceAssetImportActions.LinkExisting";
                if (samePanel) samePanel.hidden = action !== "@StoryIntelligenceAssetImportActions.LinkExisting";
                updateAliasTargets();
            };
            document.querySelectorAll("[data-asset-bulk]").forEach(button => {
                button.addEventListener("click", () => {
                    const action = button.getAttribute("data-asset-bulk");
                    if (action === "expand") cards().forEach(card => card.open = true);
                    if (action === "collapse") cards().forEach(card => card.open = false);
                });
            });
            form.querySelectorAll("[data-asset-action]").forEach(input => {
                input.addEventListener("change", () => updateCard(input.closest("[data-asset-card]")));
            });
            form.querySelectorAll("[data-asset-unified-target]").forEach(select => {
                select.addEventListener("change", () => cards().forEach(updateCard));
            });
            cards().forEach(updateCard);
        })();
    </script>
    <script src="~/js/story-review-actions.js" asp-append-version="true"></script>
}

@functions {
    private static string Display(string? value) => string.IsNullOrWhiteSpace(value) ? "Not detected" : value;
    private static string TargetLabel(StoryIntelligenceAssetTargetOptionViewModel target)
        => string.IsNullOrWhiteSpace(target.AliasSummary) ? target.DisplayName : $"{target.DisplayName} ({target.AliasSummary})";

    private static bool IsSelfTarget(StoryIntelligenceAssetTargetOptionViewModel target, StoryIntelligenceAssetReviewCandidateViewModel candidate)
        => (target.AssetID.HasValue && candidate.ExistingAssetID == target.AssetID)
            || (!string.IsNullOrWhiteSpace(target.CandidateKey) && string.Equals(target.CandidateKey, candidate.Key, StringComparison.OrdinalIgnoreCase));
}