initital commit

app/Controllers/Http/PostsController.ts

@@ -0,0 +1,74 @@
+import {HttpContextContract} from '@ioc:Adonis/Core/HttpContext'
+import Post from "App/Models/Post";
+import Redis from "@ioc:Adonis/Addons/Redis";
+
+export default class PostsController {
+
+  public async getLikes ({params}: HttpContextContract) {
+    let post = await Post.findBy('slug', params.slug)
+
+    if (!post) {
+      post = await Post.create({
+        slug: params.slug,
+        likes: 0
+      })
+    }
+
+    return post.likes
+  }
+
+  public async unlike ({request, params}: HttpContextContract) {
+    const post = await Post.findByOrFail('slug', params.slug)
+    const ip = await request.ip()
+
+    const getLikes = post.likes - 1
+    const isLiked = await Redis.exists(`artapi/posts/${post.slug}/${ip}`)
+
+    if (isLiked) {
+      await Redis.del(`artapi/posts/${post.slug}/${ip}`)
+      await post.merge({
+        likes: getLikes
+      }).save()
+      return {
+        code: 200,
+        post
+      }
+    }
+  }
+
+  public async isLiked ({params, request}: HttpContextContract) {
+    const post = await Post.findBy('slug', params.slug)
+    if (post) {
+      const ip = request.ip()
+      return Redis.exists(`artapi/posts/${post.slug}/${ip}`);
+    }
+    return false
+  }
+
+  public async like ({request, params}: HttpContextContract) {
+    let post = await Post.findBy('slug', params.slug)
+    const ip = await request.ip()
+
+    if (!post) {
+      post = await Post.create({
+        slug: params.slug,
+        likes: 0
+      })
+    }
+
+    const getLikes = post.likes + 1
+    const isLiked = await Redis.exists(`artapi/posts/${post.slug}/${ip}`)
+
+    if (!isLiked) {
+      await Redis.set(`artapi/posts/${post.slug}/${ip}`, Date.now())
+      await post.merge({
+        likes: getLikes
+      }).save()
+      return {
+        code: 200,
+        post
+      }
+    }
+  }
+
+}