App.vue

<template>
  <div id="app">
    <img alt="Vue logo" src="./assets/logo.png" />
    <div v-if="img === ''">
      <h3>Upload Image</h3>
      <input type="file" accept="image/jpeg" @change="putS3Image($event)" />
    </div>
    <div style="margin:10px" v-if="result !== ''">
      <strong>Objects found:</strong>
      {{ result.join(', ') }}
    </div>
    <div v-if="img !== ''">
      <img v-bind:src="img" />
    </div>
    <div>
      <input type="button" v-if="img !== ''" value="Reset" @click="reset" />
    </div>
    <div id="amplify-signout">
      <amplify-sign-out></amplify-sign-out>
    </div>
  </div>
</template>
<script>
import Storage from "@aws-amplify/storage";
import API, { graphqlOperation } from "@aws-amplify/api";
import { identifyLabels } from "./graphql/queries";
export default {
  name: "App",
  data() {
    return {
      result: "",
      img: ""
    };
  },
  methods: {
    reset() {
      this.result = "";
      this.img = "";
    },
    putS3Image(event) {
      const file = event.target.files[0];
      Storage.put(file.name, file)
        .then(async result => {
          this.result = await this.identifyLabels(result.key);
          this.img = await Storage.get(result.key);
        })
        .catch(err => console.log(err));
    },
    async identifyLabels(key) {
      const inputObj = {
        identifyLabels: { key }
      };
      const response = await API.graphql(
        graphqlOperation(identifyLabels, { input: inputObj })
      );
      return response.data.identifyLabels;
    }
  }
};
</script>
<style>
#app {
  font-family: Avenir, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-top: 60px;
}
#amplify-signout {
  max-width: 200px;
  margin: 20px auto;
}
img {
  max-width: 500px;
  max-height: 325px;
}
</style>