add ability to delete posts

apps/post.lua

@@ -8,7 +8,7 @@ local util = require("util")
 local models = require("models")
 local Posts = models.Posts
 local Threads = models.Threads
-
+local PostHistory = models.PostHistory
 
 app:get("single_post", "/:post_id", function(self)
   local query = constants.FULL_POSTS_QUERY .. "WHERE posts.id = ?"
@@ -22,6 +22,33 @@ app:get("single_post", "/:post_id", function(self)
   return {render = "post.single-post"}
 end)
 
+app:post("delete_post", "/:post_id/delete", function(self)
+  local user = util.get_logged_in_user(self)
+  if not user then
+    return {redirect_to = self:url_for"all_topics"}
+  end
+  print("id is " .. self.params.post_id)
+  local post = Posts:find({id = self.params.post_id})
+  if not post then
+    return {redirect_to = self:url_for"all_topics"}
+  end
+  
+  local thread = Threads:find({id = post.thread_id})
+  if user:is_mod() then
+    post:delete()
+    util.inject_infobox(self, "Post deleted.")
+    return {redirect_to = self:url_for("thread", {slug = thread.slug})}
+  end
+  
+  if post.user_id ~= user.id then
+    return {redirect_to = self:url_for"all_topics"}
+  end
+  
+  post:delete()
+  util.inject_infobox(self, "Post deleted.")
+  return {redirect_to = self:url_for("thread", {slug = thread.slug})}
+end)
+
 app:get("edit_post", "/:post_id/edit", function(self)
   local user = util.get_logged_in_user(self)
   if not user then
@@ -74,4 +101,4 @@ app:post("edit_post", "/:post_id/edit", function(self)
   return {redirect_to = link}
 end)
 
-return app
+return app

data/static/style.css

@@ -136,6 +136,20 @@ pre code {
   font-size: 1rem;
 }
 
+#delete-dialog {
+  padding: 0;
+  border-radius: 4px;
+  border: 2px solid black;
+  box-shadow: 0 0 30px rgba(0, 0, 0, 0.25);
+}
+
+.delete-dialog-inner {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  padding: 20px;
+}
+
 .copy-code-container {
   position: sticky;
   width: calc(100% - 4px);

js/thread.js

@@ -1,10 +1,38 @@
 {
   const ta = document.getElementById("post_content");
-
+  
   for (let button of document.querySelectorAll(".reply-button")) {
     button.addEventListener("click", (e) => {
       ta.value += button.value;
       ta.scrollIntoView()
     })
   }
+  
+  const deleteDialog = document.getElementById("delete-dialog");
+  const deleteDialogCloseButton = document.getElementById("post-delete-dialog-close");
+  let deletionTargetPostContainer;
+  
+  function closeDeleteDialog() {
+    deletionTargetPostContainer.style.removeProperty("background-color");
+    deleteDialog.close();
+  }
+  
+  deleteDialogCloseButton.addEventListener("click", (e) => {
+    closeDeleteDialog();
+  })
+  deleteDialog.addEventListener("click", (e) => {
+    if (e.target === deleteDialog) {
+      closeDeleteDialog();
+    }
+  })
+  for (let button of document.querySelectorAll(".post-delete-button")) {
+    button.addEventListener("click", (e) => {
+      deleteDialog.showModal();
+      const postId = button.value;
+      deletionTargetPostContainer = document.getElementById("post-" + postId).querySelector(".post-content-container");
+      deletionTargetPostContainer.style.setProperty("background-color", "#fff");
+      const form = document.getElementById("post-delete-form");
+      form.action = `/post/${postId}/delete`
+    })
+  }
 }

sass/style.scss

@@ -172,6 +172,20 @@ pre code {
   font-size: 1rem;
 }
 
+#delete-dialog {
+  padding: 0;
+  border-radius: 4px;
+  border: 2px solid black;
+  box-shadow: 0 0 30px rgba(0, 0, 0, 0.25);
+}
+
+.delete-dialog-inner {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  padding: 20px;
+}
+
 .copy-code-container {
   position: sticky;
   // width: 100%;

views/threads/post.etlua

@@ -53,7 +53,13 @@
           local reply_text = ("%s\n[quote]%s[/quote]\n---\n\n"):format(quote_src_text, post.original_markup)
         %>
           <button value="<%= reply_text %>" class="reply-button">Reply</button>
-        <% end %>
+      <% end %>
+      <%
+        local show_delete = (post.user_id == me.id and not ntob(thread.is_locked)) or me:is_mod()
+        if show_delete then
+      %>
+          <button class="critical post-delete-button" value="<%= post.id %>">Delete</button>
+      <% end %>
       </span>
     </div>
     <div class="post-content">

views/threads/thread.etlua

@@ -2,6 +2,9 @@
   local is_locked = ntob(thread.is_locked)
   local can_post = (not is_locked and not me:is_guest()) or me:is_mod()
 %>
+<% if infobox then %>
+  <% render("views.common.infobox", infobox) %>
+<% end %>
 <main>
   <nav class="darkbg">
     <h1 class="thread-title"><%= thread.title %></h1>
@@ -22,5 +25,15 @@
 <% if can_post then %>
   <h1>Respond to "<%= thread.title %>"</h1>
   <% render("views.common.babycode-editor", {ta_name="post_content"}) %>
-  <script src="/static/js/thread.js"></script>
 <% end %>
+<dialog id="delete-dialog">
+  <div class=delete-dialog-inner>
+    Are you sure you want to delete the highlighted post?
+    <span>
+      <button id=post-delete-dialog-close>Cancel</button>
+      <button class="critical" form=post-delete-form>Delete</button>
+      <form id="post-delete-form" method="post"></form>
+    </span>
+  </div>
+</dialog>
+<script src="/static/js/thread.js"></script>