feat: add likes

+ add ability for user to like a posts + add ability for user ot remove a like + add display of reply and like count
2023-09-14 23:02:47 -05:00
parent 9cc9077017
commit 40515b3099
8 changed files with 161 additions and 12 deletions
@@ -0,0 +1,99 @@
+import { v } from 'convex/values';
+import { mutation, query } from './_generated/server';
+import { userQuery } from './users';
+
+export const addLike = mutation({
+  args: { postId: v.id('posts') },
+  handler: async (ctx, args) => {
+    const clerkUser = await ctx.auth.getUserIdentity();
+
+    if (clerkUser === null) {
+      return;
+    }
+
+    const user = await userQuery(ctx, clerkUser.subject);
+
+    if (user === null) {
+      return;
+    }
+
+    const existingLike = await ctx.db
+      .query('likes')
+      .withIndex('by_user_post_id', q =>
+        q.eq('userId', user._id).eq('postId', args.postId)
+      )
+      .unique();
+
+    if (existingLike !== null) {
+      return;
+    }
+
+    await ctx.db.insert('likes', { postId: args.postId, userId: user._id });
+  },
+});
+
+export const removeLike = mutation({
+  args: { postId: v.id('posts') },
+  handler: async (ctx, args) => {
+    const clerkUser = await ctx.auth.getUserIdentity();
+
+    if (clerkUser === null) {
+      return;
+    }
+
+    const user = await userQuery(ctx, clerkUser.subject);
+
+    if (user === null) {
+      return;
+    }
+
+    const existingLike = await ctx.db
+      .query('likes')
+      .withIndex('by_user_post_id', q =>
+        q.eq('userId', user._id).eq('postId', args.postId)
+      )
+      .unique();
+
+    if (existingLike === null) {
+      return;
+    }
+
+    await ctx.db.delete(existingLike._id);
+  },
+});
+
+export const getLike = query({
+  args: { postId: v.id('posts') },
+  handler: async (ctx, args) => {
+    const clerkUser = await ctx.auth.getUserIdentity();
+
+    if (clerkUser === null) {
+      return;
+    }
+
+    const user = await userQuery(ctx, clerkUser.subject);
+
+    if (user === null) {
+      return;
+    }
+
+    return await ctx.db
+      .query('likes')
+      .withIndex('by_post_user_id', q =>
+        q.eq('postId', args.postId).eq('userId', user._id)
+      )
+      .unique();
+  },
+});
+
+export const getPostLikeCount = query({
+  args: { postId: v.id('posts') },
+  handler: async (ctx, args) => {
+    const likes = await ctx.db
+      .query('likes')
+      .withIndex('by_post_user_id', q => q.eq('postId', args.postId))
+      .collect();
+
+    return likes.length;
+  },
+});