feat: 演唱會搜尋清單

concert/search.js

@@ -2,59 +2,119 @@
 let myQuery = document.querySelector("#concert-query");
 let myMember = document.querySelector("#concert-member");
 let myBtn = document.querySelector("#concert-search-btn");
-let mySpan = document.querySelector("#concert-search-result");
+let myResult = document.querySelector("#concert-search-result");
 
-console.log("myQuery", myQuery);
-console.log("myMember", myMember);
-console.log("myBtn", myBtn);
-console.log("mySpan", mySpan);
+const SEARCH_LIST_MAX = 12;
 
-function countMatchingTracks(keyword, member) {
+function getTrackContext(trackEl) {
+    const venueBlock = trackEl.closest(".track-list")?.parentElement;
+    const tourCard = trackEl.closest(".con-1, .con-2, .con-3, .con-4");
+    return {
+        trackName: trackEl.textContent.trim(),
+        tourTitle: tourCard?.querySelector(".title")?.textContent.trim().replace(/\s+/g, " ") || "",
+        location: venueBlock?.querySelector(".location")?.textContent.trim() || ""
+    };
+}
+
+function findMatchingTracks(keyword, member) {
     const tracks = document.querySelectorAll(".track-item .track");
     const k = keyword.trim().toLowerCase();
     const m = member.trim().toLowerCase();
-    let count = 0;
+    const hits = [];
 
     tracks.forEach(function (trackEl) {
         const text = trackEl.textContent.toLowerCase();
         const matchKeyword = !k || text.includes(k);
         const matchMember = !m || text.includes(m);
         if (matchKeyword && matchMember) {
-            count += 1;
+            hits.push({
+                el: trackEl.closest(".track-item"),
+                ...getTrackContext(trackEl)
+            });
         }
     });
 
-    return count;
+    return hits;
+}
+
+function clearSearchHighlights() {
+    document.querySelectorAll(".track-item.is-search-hit").forEach(function (item) {
+        item.classList.remove("is-search-hit");
+    });
+}
+
+function renderSearchResults(getQuery, getMember, hits) {
+    if (!myResult) return;
+
+    clearSearchHighlights();
+
+    const summary = document.createElement("p");
+    summary.className = "concert-search-summary";
+
+    if (!hits.length) {
+        summary.textContent = `關鍵字「${getQuery || "（未填）"}」${getMember.trim() ? `、成員「${getMember}」` : ""}：沒有比對到曲目，請換字再試。`;
+        myResult.replaceChildren(summary);
+        return;
+    }
+
+    if (getMember.trim()) {
+        summary.textContent = `關鍵字「${getQuery || "（未填）"}」、成員「${getMember}」：共 ${hits.length} 筆，以下列出前 ${Math.min(hits.length, SEARCH_LIST_MAX)} 筆。`;
+    } else {
+        summary.textContent = `關鍵字「${getQuery}」：共 ${hits.length} 筆，以下列出前 ${Math.min(hits.length, SEARCH_LIST_MAX)} 筆。`;
+    }
+
+    const list = document.createElement("ul");
+    list.className = "concert-search-hits";
+
+    hits.slice(0, SEARCH_LIST_MAX).forEach(function (hit) {
+        if (hit.el) hit.el.classList.add("is-search-hit");
+
+        const li = document.createElement("li");
+        const trackLine = document.createElement("span");
+        trackLine.className = "hit-track";
+        trackLine.textContent = hit.trackName;
+
+        const metaLine = document.createElement("span");
+        metaLine.className = "hit-meta";
+        metaLine.textContent = [hit.tourTitle, hit.location].filter(Boolean).join(" · ");
+
+        li.appendChild(trackLine);
+        if (metaLine.textContent) li.appendChild(metaLine);
+        list.appendChild(li);
+    });
+
+    if (hits.length > SEARCH_LIST_MAX) {
+        const more = document.createElement("li");
+        more.className = "hit-more";
+        more.textContent = `另有 ${hits.length - SEARCH_LIST_MAX} 筆未顯示，請縮小關鍵字。`;
+        list.appendChild(more);
+    }
+
+    myResult.replaceChildren(summary, list);
+
+    const firstHit = hits[0]?.el;
+    if (firstHit) {
+        firstHit.scrollIntoView({ behavior: "smooth", block: "nearest" });
+    }
 }
 
 // 2.action
-if (myBtn && mySpan) {
+if (myBtn && myResult) {
     myBtn.addEventListener("click", function () {
-        console.log("myBtn", myBtn);
-
-        // 1.抓 input
         let getQuery = myQuery ? myQuery.value : "";
         let getMember = myMember ? myMember.value : "";
-        console.log("getQuery", getQuery);
-        console.log("getMember", getMember);
 
         if (!getQuery.trim() && !getMember.trim()) {
-            mySpan.innerText = "請至少輸入曲目／場次，或成員其中一項。";
+            myResult.replaceChildren();
+            const summary = document.createElement("p");
+            summary.className = "concert-search-summary";
+            summary.textContent = "請至少輸入曲目／場次，或成員其中一項。";
+            myResult.appendChild(summary);
+            clearSearchHighlights();
             return;
         }
 
-        const count = countMatchingTracks(getQuery, getMember);
-
-        // 2.組成 text
-        let tmpText;
-        if (getMember.trim()) {
-            tmpText = `關鍵字「${getQuery || "（未填）"}」、成員「${getMember}」：在巡迴歌單中共 ${count} 筆曲目。`;
-        } else {
-            tmpText = `關鍵字「${getQuery}」：在巡迴歌單中共 ${count} 筆曲目。`;
-        }
-        console.log("tmpText", tmpText);
-
-        // 3.顯示在 span
-        mySpan.innerText = tmpText;
+        const hits = findMatchingTracks(getQuery, getMember);
+        renderSearchResults(getQuery, getMember, hits);
     });
 }