codePreviews: limit to 30 lines if no lines given, ignore non-ok, message splitting

src/modules/codePreviews.js

@@ -21,7 +21,9 @@ function unindent(str) {
 }
 
 async function processFile(link) {
-  const file = await fetch(link).then((res) => res.text());
+  const res = await fetch(link);
+  if (!res.ok) return "";
+  const file = await res.text();
   const lines = file.replace(/\r/g, "").split("\n");
 
   const fileName = link.substring(
@@ -47,7 +49,7 @@ async function processFile(link) {
     }
   } else {
     entireFile = true;
-    startLine = 1;
+    startLine = 0;
     endLine = lines.length;
   }
 
@@ -57,24 +59,13 @@ async function processFile(link) {
     ? "Line " + startLine
     : "Lines " + startLine + "-" + endLine;
 
-  startLine--;
-  endLine--;
-
   const targetLines = (
-    entireFile ? lines : lines.slice(startLine, endLine + 1)
+    entireFile ? lines.slice(0, 30) : lines.slice(startLine - 1, endLine)
   ).join("\n");
 
-  return (
-    "**" +
-    fileName +
-    ": **" +
-    whichLines +
-    "\n```" +
-    fileType +
-    "\n" +
-    unindent(targetLines) +
-    "\n```\n"
-  );
+  return `**${fileName}: **${whichLines}\n\`\`\`${fileType}\n${unindent(
+    targetLines
+  )}${entireFile ? `\n... (${lines.length - 30} lines left)` : ""}\n\`\`\``;
 }
 
 events.add("messageCreate", "codePreviews", async function (msg) {
@@ -82,7 +73,7 @@ events.add("messageCreate", "codePreviews", async function (msg) {
   if (!msg.guildID) return;
   if (!(await hasFlag(msg.guildID, "codePreviews"))) return;
 
-  let out = "";
+  const files = [];
 
   const githubLinks = msg.content.match(REGEX_GITHUB);
   const gitlabLinks = msg.content.match(REGEX_GITLAB);
@@ -90,35 +81,58 @@ events.add("messageCreate", "codePreviews", async function (msg) {
 
   if (githubLinks?.length) {
     for (const link of githubLinks) {
-      out += await processFile(link.replace("/blob/", "/raw/"));
+      files.push(await processFile(link.replace("/blob/", "/raw/")));
     }
   }
 
   if (gitlabLinks?.length) {
     for (const link of gitlabLinks) {
-      out += await processFile(link.replace("/blob/", "/raw/"));
+      files.push(await processFile(link.replace("/blob/", "/raw/")));
     }
   }
 
   if (giteaLinks?.length) {
     for (const link of giteaLinks) {
-      out += await processFile(link.replace("/src/", "/raw/"));
+      files.push(await processFile(link.replace("/src/", "/raw/")));
     }
   }
 
-  if (out.length > 2000) return;
-
-  if (out !== "") {
+  let out = "";
+  const allFiles = files.join("\n").trim();
+  if (allFiles !== "" && allFiles.length <= 2000) {
     await msg.edit({flags: MessageFlags.SUPPRESS_EMBEDS}).catch(() => {});
+  }
+  for (let i = 0; i < files.length; i++) {
+    const file = files[i];
+    if (file === "") continue;
 
-    await msg.channel.createMessage({
-      content: out,
-      allowedMentions: {
-        repliedUser: false,
-      },
-      messageReference: {
-        messageID: msg.id,
-      },
-    });
+    if (out.length + file.length > 2000) {
+      await msg.channel.createMessage({
+        content: out,
+        allowedMentions: {
+          repliedUser: false,
+        },
+        messageReference: {
+          messageID: msg.id,
+        },
+      });
+
+      out = file;
+    } else {
+      out += "\n" + file;
+      out = out.trim();
+    }
+
+    if (i == files.length - 1 && out.length <= 2000) {
+      await msg.channel.createMessage({
+        content: out,
+        allowedMentions: {
+          repliedUser: false,
+        },
+        messageReference: {
+          messageID: msg.id,
+        },
+      });
+    }
   }
 });