♻️ Refactor

components/realtime/sse.vue

@@ -0,0 +1,160 @@
+<template>
+  <div class="page">
+    <pw-section class="blue" :label="$t('request')" ref="request">
+      <ul>
+        <li>
+          <label for="server">{{ $t("server") }}</label>
+          <input
+            id="server"
+            type="url"
+            :class="{ error: !serverValid }"
+            v-model="server"
+            @keyup.enter="serverValid ? toggleSSEConnection() : null"
+          />
+        </li>
+        <div>
+          <li>
+            <label for="start" class="hide-on-small-screen">&nbsp;</label>
+            <button :disabled="!serverValid" id="start" name="start" @click="toggleSSEConnection">
+              {{ !connectionSSEState ? $t("start") : $t("stop") }}
+              <span>
+                <i class="material-icons">
+                  {{ !connectionSSEState ? "sync" : "sync_disabled" }}
+                </i>
+              </span>
+            </button>
+          </li>
+        </div>
+      </ul>
+    </pw-section>
+
+    <pw-section class="purple" :label="$t('communication')" id="response" ref="response">
+      <ul>
+        <li>
+          <realtime-log :title="$t('events')" :log="events.log" />
+          <div id="result"></div>
+        </li>
+      </ul>
+    </pw-section>
+  </div>
+</template>
+
+<script>
+import { sseValid } from "~/functions/utils/valid"
+
+export default {
+  components: {
+    "pw-section": () => import("../layout/section"),
+    realtimeLog: () => import("./log"),
+  },
+  data() {
+    return {
+      connectionSSEState: false,
+      server: "https://express-eventsource.herokuapp.com/events",
+      sse: null,
+      events: {
+        log: null,
+        input: "",
+      },
+    }
+  },
+  computed: {
+    serverValid() {
+      return sseValid(this.server)
+    },
+  },
+  methods: {
+    toggleSSEConnection() {
+      // If it is connecting:
+      if (!this.connectionSSEState) return this.start()
+      // Otherwise, it's disconnecting.
+      else return this.stop()
+    },
+    start() {
+      this.events.log = [
+        {
+          payload: this.$t("connecting_to", { name: this.server }),
+          source: "info",
+          color: "var(--ac-color)",
+        },
+      ]
+      if (typeof EventSource !== "undefined") {
+        try {
+          this.sse = new EventSource(this.server)
+          this.sse.onopen = event => {
+            this.connectionSSEState = true
+            this.events.log = [
+              {
+                payload: this.$t("connected_to", { name: this.server }),
+                source: "info",
+                color: "var(--ac-color)",
+                ts: new Date().toLocaleTimeString(),
+              },
+            ]
+            this.$toast.success(this.$t("connected"), {
+              icon: "sync",
+            })
+          }
+          this.sse.onerror = event => {
+            this.handleSSEError()
+          }
+          this.sse.onclose = event => {
+            this.connectionSSEState = false
+            this.events.log.push({
+              payload: this.$t("disconnected_from", { name: this.server }),
+              source: "info",
+              color: "#ff5555",
+              ts: new Date().toLocaleTimeString(),
+            })
+            this.$toast.error(this.$t("disconnected"), {
+              icon: "sync_disabled",
+            })
+          }
+          this.sse.onmessage = event => {
+            this.events.log.push({
+              payload: event.data,
+              source: "server",
+              ts: new Date().toLocaleTimeString(),
+            })
+          }
+        } catch (ex) {
+          this.handleSSEError(ex)
+          this.$toast.error(this.$t("something_went_wrong"), {
+            icon: "error",
+          })
+        }
+      } else {
+        this.events.log = [
+          {
+            payload: this.$t("browser_support_sse"),
+            source: "info",
+            color: "#ff5555",
+            ts: new Date().toLocaleTimeString(),
+          },
+        ]
+      }
+    },
+    handleSSEError(error) {
+      this.stop()
+      this.connectionSSEState = false
+      this.events.log.push({
+        payload: this.$t("error_occurred"),
+        source: "info",
+        color: "#ff5555",
+        ts: new Date().toLocaleTimeString(),
+      })
+      if (error !== null)
+        this.events.log.push({
+          payload: error,
+          source: "info",
+          color: "#ff5555",
+          ts: new Date().toLocaleTimeString(),
+        })
+    },
+    stop() {
+      this.sse.onclose()
+      this.sse.close()
+    },
+  },
+}
+</script>