fix: Validate collection page URL (#2291)

- Disables saving collection start page if valid snapshot is not
selected
- Shows full URL in page URL status check mark
- Shows error in page URL status exclamation mark
- Fixes pasting in URL

frontend/src/features/collections/collection-replay-dialog.ts

@@ -17,6 +17,9 @@ enum HomeView {
   URL = "url",
 }
 
+/**
+ * @fires btrix-change
+ */
 @localized()
 @customElement("btrix-collection-replay-dialog")
 export class CollectionStartPageDialog extends BtrixElement {
@@ -82,13 +85,20 @@ export class CollectionStartPageDialog extends BtrixElement {
   }
 
   render() {
+    const showTooltip =
+      this.homeView === HomeView.URL && !this.selectedSnapshot;
     return html`
       <btrix-dialog
         .label=${msg("Configure Replay Home")}
         .open=${this.open}
         class="[--width:60rem]"
         @sl-show=${() => (this.showContent = true)}
-        @sl-after-hide=${() => (this.showContent = false)}
+        @sl-after-hide=${() => {
+          this.homeView = this.homeUrl ? HomeView.URL : HomeView.Pages;
+          this.isSubmitting = false;
+          this.selectedSnapshot = null;
+          this.showContent = false;
+        }}
       >
         ${this.showContent ? this.renderContent() : nothing}
         <div slot="footer" class="flex items-center justify-between gap-3">
@@ -98,17 +108,22 @@ export class CollectionStartPageDialog extends BtrixElement {
             @click=${() => void this.dialog?.hide()}
             >${msg("Cancel")}</sl-button
           >
-          <sl-button
+          <sl-tooltip
-            variant="primary"
+            content=${msg("Choose a page snapshot")}
-            size="small"
+            ?disabled=${!showTooltip}
-            ?disabled=${!this.replayLoaded}
-            ?loading=${this.isSubmitting}
-            @click=${() => {
-              this.form?.requestSubmit();
-            }}
           >
-            ${msg("Save")}
+            <sl-button
-          </sl-button>
+              variant="primary"
+              size="small"
+              ?disabled=${!this.replayLoaded || showTooltip}
+              ?loading=${this.isSubmitting}
+              @click=${() => {
+                this.form?.requestSubmit();
+              }}
+            >
+              ${msg("Save")}
+            </sl-button>
+          </sl-tooltip>
         </div>
       </btrix-dialog>
     `;
@@ -144,12 +159,15 @@ export class CollectionStartPageDialog extends BtrixElement {
 
     if (snapshot) {
       urlPreview = html`
-        <iframe
+        <sl-tooltip hoist>
-          class="inline-block size-full"
+          <iframe
-          id="thumbnailPreview"
+            class="inline-block size-full"
-          src=${`/replay/w/${this.collectionId}/${formatRwpTimestamp(snapshot.ts)}id_/urn:thumbnail:${snapshot.url}`}
+            id="thumbnailPreview"
-        >
+            src=${`/replay/w/${this.collectionId}/${formatRwpTimestamp(snapshot.ts)}id_/urn:thumbnail:${snapshot.url}`}
-        </iframe>
+          >
+          </iframe>
+          <span slot="content" class="break-all">${snapshot.url}</span>
+        </sl-tooltip>
       `;
     }
 
@@ -194,6 +212,16 @@ export class CollectionStartPageDialog extends BtrixElement {
           ?disabled=${!this.replayLoaded}
           @sl-change=${(e: SlChangeEvent) => {
             this.homeView = (e.currentTarget as SlSelect).value as HomeView;
+
+            if (this.homeView === HomeView.Pages) {
+              if (
+                !this.homePageId ||
+                this.homePageId !== this.selectedSnapshot?.pageId
+              ) {
+                // Reset unsaved selected snapshot
+                this.selectedSnapshot = null;
+              }
+            }
           }}
         >
           ${this.replayLoaded
@@ -280,6 +308,12 @@ export class CollectionStartPageDialog extends BtrixElement {
     const form = e.currentTarget as HTMLFormElement;
     const { homeView, useThumbnail } = serialize(form);
 
+    if (homeView === HomeView.Pages && !this.homePageId) {
+      // No changes to save
+      this.open = false;
+      return;
+    }
+
     this.isSubmitting = true;
 
     try {
@@ -288,6 +322,8 @@ export class CollectionStartPageDialog extends BtrixElement {
           (homeView === HomeView.URL && this.selectedSnapshot?.pageId) || null,
       });
 
+      this.dispatchEvent(new CustomEvent("btrix-change"));
+
       const shouldUpload =
         homeView === HomeView.URL &&
         useThumbnail === "on" &&

frontend/src/features/collections/select-collection-start-page.ts

@@ -5,6 +5,7 @@ import type {
   SlInput,
   SlSelect,
 } from "@shoelace-style/shoelace";
+import clsx from "clsx";
 import { html, type PropertyValues } from "lit";
 import { customElement, property, query, state } from "lit/decorators.js";
 import { when } from "lit/directives/when.js";
@@ -16,6 +17,7 @@ import { BtrixElement } from "@/classes/BtrixElement";
 import type { Combobox } from "@/components/ui/combobox";
 import type { APIPaginatedList, APIPaginationQuery } from "@/types/api";
 import type { UnderlyingFunction } from "@/types/utils";
+import { tw } from "@/utils/tailwind";
 
 type Snapshot = {
   pageId: string;
@@ -29,8 +31,10 @@ type Page = {
   snapshots: Snapshot[];
 };
 
+type SnapshotItem = Snapshot & { url: string };
+
 export type SelectSnapshotDetail = {
-  item: Snapshot & { url: string };
+  item: SnapshotItem | null;
 };
 
 const DEFAULT_PROTOCOL = "http";
@@ -59,12 +63,15 @@ export class SelectCollectionStartPage extends BtrixElement {
   private selectedPage?: Page;
 
   @state()
-  private selectedSnapshot?: Snapshot;
+  public selectedSnapshot?: Snapshot;
+
+  @state()
+  private pageUrlError?: string;
 
   @query("btrix-combobox")
   private readonly combobox?: Combobox | null;
 
-  @query("sl-input")
+  @query("#pageUrlInput")
   private readonly input?: SlInput | null;
 
   public get page() {
@@ -83,6 +90,20 @@ export class SelectCollectionStartPage extends BtrixElement {
       this.searchQuery = this.homeUrl;
       void this.initSelection();
     }
+    if (changedProperties.has("selectedSnapshot")) {
+      this.dispatchEvent(
+        new CustomEvent<SelectSnapshotDetail>("btrix-select", {
+          detail: {
+            item: this.selectedPage?.url
+              ? ({
+                  url: this.selectedPage.url,
+                  ...this.selectedSnapshot,
+                } as SnapshotItem)
+              : null,
+          },
+        }),
+      );
+    }
   }
 
   private async initSelection() {
@@ -123,8 +144,11 @@ export class SelectCollectionStartPage extends BtrixElement {
         ${this.renderPageSearch()}
         <sl-select
           label=${msg("Snapshot")}
-          placeholder="--"
+          placeholder=${this.selectedPage
+            ? msg("Choose a snapshot")
+            : msg("Enter a page URL to choose snapshot")}
           value=${this.selectedSnapshot?.pageId || ""}
+          ?required=${this.selectedPage && !this.selectedSnapshot}
           ?disabled=${!this.selectedPage}
           @sl-change=${async (e: SlChangeEvent) => {
             const { value } = e.currentTarget as SlSelect;
@@ -134,19 +158,6 @@ export class SelectCollectionStartPage extends BtrixElement {
             this.selectedSnapshot = this.selectedPage?.snapshots.find(
               ({ pageId }) => pageId === value,
             );
-
-            if (this.selectedSnapshot) {
-              this.dispatchEvent(
-                new CustomEvent<SelectSnapshotDetail>("btrix-select", {
-                  detail: {
-                    item: {
-                      url: this.selectedPage!.url,
-                      ...this.selectedSnapshot,
-                    },
-                  },
-                }),
-              );
-            }
           }}
         >
           ${when(
@@ -179,6 +190,29 @@ export class SelectCollectionStartPage extends BtrixElement {
   }
 
   private renderPageSearch() {
+    let prefix: {
+      icon: string;
+      tooltip: string;
+      className?: string;
+    } = {
+      icon: "search",
+      tooltip: msg("Search for a page in this collection"),
+    };
+
+    if (this.pageUrlError) {
+      prefix = {
+        icon: "exclamation-lg",
+        tooltip: this.pageUrlError,
+        className: tw`text-danger`,
+      };
+    } else if (this.selectedPage) {
+      prefix = {
+        icon: "check-lg",
+        tooltip: msg("Page exists in collection"),
+        className: tw`text-success`,
+      };
+    }
+
     return html`
       <btrix-combobox
         @request-close=${() => {
@@ -186,26 +220,86 @@ export class SelectCollectionStartPage extends BtrixElement {
         }}
       >
         <sl-input
+          id="pageUrlInput"
           label=${msg("Page URL")}
           placeholder=${msg("Start typing a URL...")}
           clearable
           @sl-focus=${() => {
+            this.resetInputValidity();
             this.combobox?.show();
           }}
           @sl-clear=${async () => {
+            this.resetInputValidity();
+
             this.searchQuery = "";
+            this.selectedPage = undefined;
+            this.selectedSnapshot = undefined;
           }}
           @sl-input=${this.onSearchInput as UnderlyingFunction<
             typeof this.onSearchInput
           >}
+          @sl-blur=${this.pageUrlOnBlur}
         >
-          <sl-icon name="search" slot="prefix"></sl-icon>
+          <div slot="prefix" class="inline-flex items-center">
+            <sl-tooltip
+              hoist
+              content=${prefix.tooltip}
+              placement="bottom-start"
+            >
+              <sl-icon
+                name=${prefix.icon}
+                class=${clsx(tw`size-4 text-base`, prefix.className)}
+              ></sl-icon>
+            </sl-tooltip>
+          </div>
         </sl-input>
         ${this.renderSearchResults()}
       </btrix-combobox>
     `;
   }
 
+  private resetInputValidity() {
+    this.pageUrlError = undefined;
+    this.input?.setCustomValidity("");
+  }
+
+  private readonly pageUrlOnBlur = async () => {
+    if (!this.searchQuery) return;
+
+    if (this.selectedPage) {
+      // Ensure input value matches the URL, e.g. if the user pressed
+      // backspace on an existing URL
+      if (this.searchQuery !== this.selectedPage.url && this.input) {
+        this.input.value = this.selectedPage.url;
+      }
+
+      return;
+    }
+
+    await this.searchResults.taskComplete;
+
+    const results = this.searchResults.value;
+
+    if (!results) return;
+
+    if (results.total === 0) {
+      if (this.input) {
+        this.pageUrlError = msg(
+          "Page not found in collection. Please check the URL and try again",
+        );
+        this.input.setCustomValidity(this.pageUrlError);
+      }
+
+      // Clear selection
+      this.selectedPage = undefined;
+      this.selectedSnapshot = undefined;
+    } else if (results.total === 1) {
+      // Choose only option, e.g. for copy-paste
+      this.selectedPage = this.searchResults.value.items[0];
+      this.selectedSnapshot = this.selectedPage.snapshots[0];
+    }
+  };
+
   private renderSearchResults() {
     return this.searchResults.render({
       pending: () => html`
@@ -217,7 +311,7 @@ export class SelectCollectionStartPage extends BtrixElement {
         if (!items.length) {
           return html`
             <sl-menu-item slot="menu-item" disabled>
-              ${msg("No matching pages found.")}
+              ${msg("No matching page found.")}
             </sl-menu-item>
           `;
         }
@@ -241,18 +335,6 @@ export class SelectCollectionStartPage extends BtrixElement {
                   this.combobox?.hide();
 
                   this.selectedSnapshot = this.selectedPage.snapshots[0];
-
-                  await this.updateComplete;
-                  this.dispatchEvent(
-                    new CustomEvent<SelectSnapshotDetail>("btrix-select", {
-                      detail: {
-                        item: {
-                          url: this.selectedPage.url,
-                          ...this.selectedSnapshot,
-                        },
-                      },
-                    }),
-                  );
                 }}
                 >${item.url}
               </sl-menu-item>

frontend/src/pages/org/collection-detail.ts

@@ -241,15 +241,13 @@ export class CollectionDetail extends BtrixElement {
 
       <btrix-collection-replay-dialog
         ?open=${this.openDialogName === "editStartPage"}
-        @sl-hide=${async () => {
+        @btrix-change=${() => {
-          this.openDialogName = undefined;
-
           // Don't do full refresh of rwp so that rwp-url-change fires
           this.isRwpLoaded = false;
 
-          await this.fetchCollection();
+          void this.fetchCollection();
-          await this.updateComplete;
         }}
+        @sl-hide=${async () => (this.openDialogName = undefined)}
         collectionId=${this.collectionId}
         .homeUrl=${this.collection?.homeUrl}
         .homePageId=${this.collection?.homeUrlPageId}