add reactions support to thread

data/static/js/thread.js

@@ -62,26 +62,26 @@
       setTimeout(() => {
         const valid = isQuoteSelectionValid();
         if (isSelecting || !valid) {
-          removePopover();
+          removeQuotePopover();
           return;
         }
 
         const selection = document.getSelection();
         const selectionStr = selection.toString().trim();
         if (selection.isCollapsed || selectionStr === "") {
-          removePopover();
+          removeQuotePopover();
           return;
         }
 
-        showPopover();
+        showQuotePopover();
       }, 50)
     }
 
-    function removePopover() {
+    function removeQuotePopover() {
       quotePopover?.hidePopover();
     }
 
-    function createPopover() {
+    function createQuotePopover() {
       quotePopover = document.createElement("div");
       quotePopover.popover = "auto";
       quotePopover.className = "quote-popover";
@@ -95,9 +95,9 @@
       return quoteButton;
     }
 
-    function showPopover() {
+    function showQuotePopover() {
       if (!quotePopover) {
-        const quoteButton = createPopover();
+        const quoteButton = createQuotePopover();
         quoteButton.addEventListener("click", () => {
           console.log("Quoting:", document.getSelection().toString());
           const postPermalink = quotedPostContainer.dataset.postPermalink;
@@ -111,7 +111,7 @@
           ta.focus();
 
           document.getSelection().empty();
-          removePopover();
+          removeQuotePopover();
         })
       }
 
@@ -196,4 +196,174 @@
       .catch(error => console.log(error))
   }
   tryFetchUpdate();
+
+  if (supportsPopover()){
+    const reactionEmoji = document.getElementById("allowed-reaction-emoji").value.split(" ");
+    let reactionPopover = null;
+    let reactionTargetPostId = null;
+
+    function tryAddReaction(emoji, postId = reactionTargetPostId) {
+      const body = JSON.stringify({
+        "emoji": emoji,
+      });
+      fetch(`/api/add-reaction/${postId}`, {method: "POST", headers: {"Content-Type": "application/json"}, body: body})
+        .then(res => res.json())
+        .then(json => {
+          if (json.status === "added") {
+            const post = document.getElementById(`post-${postId}`);
+            const spans = Array.from(post.querySelectorAll(".reaction-count")).filter((span) => {
+              return span.dataset.emoji === emoji
+            });
+            if (spans.length > 0) {
+              const currentValue = spans[0].textContent;
+              spans[0].textContent = `${parseInt(currentValue) + 1}`;
+              const button = spans[0].closest(".reaction-button");
+              button.classList.add("active");
+            } else {
+              const span = document.createElement("span");
+              span.classList = "reaction-container";
+              span.dataset.emoji = emoji;
+
+              const button = document.createElement("button");
+              button.type = "button";
+              button.className = "reduced reaction-button active";
+
+              button.addEventListener("click", () => {
+                tryAddReaction(emoji, postId);
+              })
+
+              const img = document.createElement("img");
+              img.src = `/static/emoji/${emoji}.png`;
+
+              button.textContent = " x";
+
+              const reactionCountSpan = document.createElement("span")
+              reactionCountSpan.className = "reaction-count"
+              reactionCountSpan.textContent = "1"
+
+              button.insertAdjacentElement("afterbegin", img);
+              button.appendChild(reactionCountSpan);
+
+              span.appendChild(button);
+
+              const post = document.getElementById(`post-${postId}`);
+              post.querySelector(".post-reactions").insertBefore(span, post.querySelector(".add-reaction-button"));
+            }
+          } else if (json.error_code === 409) {
+            console.log("reaction exists, gonna try and remove");
+            tryRemoveReaction(emoji, postId);
+          } else {
+            console.warn(json)
+          }
+        })
+      .catch(error => console.error(error));
+    }
+
+    function tryRemoveReaction(emoji, postId = reactionTargetPostId) {
+      const body = JSON.stringify({
+        "emoji": emoji,
+      });
+
+      fetch(`/api/remove-reaction/${postId}`, {method: "POST", headers: {"Content-Type": "application/json"}, body: body})
+      .then(res => res.json())
+      .then(json => {
+        if (json.status === "removed") {
+          const post = document.getElementById(`post-${postId}`);
+          const spans = Array.from(post.querySelectorAll(".reaction-container")).filter((span) => {
+            return span.dataset.emoji === emoji
+          });
+          if (spans.length > 0) {
+            const reactionCountSpan = spans[0].querySelector(".reaction-count");
+            const currentValue = parseInt(reactionCountSpan.textContent);
+            if (currentValue - 1 === 0) {
+              spans[0].remove();
+            } else {
+              reactionCountSpan.textContent = `${parseInt(currentValue) - 1}`;
+              const button = reactionCountSpan.closest(".reaction-button");
+              button.classList.remove("active");
+            }
+          }
+        } else {
+          console.warn(json)
+        }
+      })
+      .catch(error => console.error(error));
+    }
+
+    function createReactionPopover() {
+      reactionPopover = document.createElement("div");
+      reactionPopover.className = "reaction-popover";
+      reactionPopover.popover = "auto";
+
+      const inner = document.createElement("div");
+      inner.className = "reaction-popover-inner";
+
+      reactionPopover.appendChild(inner);
+
+      for (let emoji of reactionEmoji) {
+        const img = document.createElement("img");
+        img.src = `/static/emoji/${emoji}.png`;
+
+        const button = document.createElement("button");
+        button.type = "button";
+        button.className = "reduced";
+        button.appendChild(img);
+        button.addEventListener("click", () => {
+          tryAddReaction(emoji);
+        })
+
+        button.dataset.emojiName = emoji;
+
+        inner.appendChild(button);
+      }
+
+      reactionPopover.addEventListener("beforetoggle", (e) => {
+        if (e.newState === "closed") {
+          reactionTargetPostId = null;
+        }
+      })
+
+      document.body.appendChild(reactionPopover);
+    }
+
+    function showReactionPopover() {
+      if (!reactionPopover) {
+        createReactionPopover();
+      }
+
+      if (!reactionPopover.matches(':popover-open')) {
+        reactionPopover.showPopover();
+      }
+    }
+
+    for (let button of document.querySelectorAll(".add-reaction-button")) {
+      button.addEventListener("click", (e) => {
+        showReactionPopover();
+        reactionTargetPostId = e.target.dataset.postId;
+
+        const rect = e.target.getBoundingClientRect();
+        const popoverRect = reactionPopover.getBoundingClientRect();
+        const scrollY = window.scrollY || window.pageYOffset;
+
+        reactionPopover.style.setProperty("top", `${rect.top + scrollY + rect.height}px`)
+        reactionPopover.style.setProperty("left", `${rect.left + rect.width/2 - popoverRect.width/2}px`)
+      })
+    }
+
+    for (let button of document.querySelectorAll(".reaction-button")) {
+      button.addEventListener("click", () => {
+        const reactionContainer = button.closest(".reaction-container")
+        const emoji = reactionContainer.dataset.emoji;
+        const postId = reactionContainer.dataset.postId;
+        console.log(reactionContainer);
+        tryAddReaction(emoji, postId);
+      })
+    }
+
+  } else {
+    for (let button of document.querySelectorAll(".add-reaction-button")) {
+      button.disabled = true;
+      button.title = "Enable JS to add reactions."
+    }
+  }
 }