From c4887f697f975b056c76611c991ff6af9a6eb3df Mon Sep 17 00:00:00 2001
From: Mayank <mayankchhabra9@gmail.com>
Date: Wed, 22 Apr 2020 16:58:14 +0530
Subject: [PATCH] open channels

---
 src/components/Channels/Open.vue | 208 +++++++++++++++++++++++++++++++
 1 file changed, 208 insertions(+)
 create mode 100644 src/components/Channels/Open.vue

diff --git a/src/components/Channels/Open.vue b/src/components/Channels/Open.vue
new file mode 100644
index 0000000..61fc8bc
--- /dev/null
+++ b/src/components/Channels/Open.vue
@@ -0,0 +1,208 @@
+<template>
+  <form @submit.prevent="openChannel">
+    <b-row>
+      <b-col col cols="12" sm="6">
+        <label class="sr-onlsy" for="peer-connection">Peer connection code</label>
+        <b-input
+          id="peer-connection"
+          class="mb-3 neu-input"
+          type="text"
+          size="lg"
+          v-model="peerConnectionCode"
+          :disabled="isOpening"
+        ></b-input>
+      </b-col>
+      <b-col col cols="12" sm="6">
+        <label class="sr-onlsy" for="funding-amount">Channel funding amount</label>
+        <b-input
+          id="funding-amount"
+          class="mb-3 neu-input"
+          type="number"
+          size="lg"
+          v-model="fundingAmount"
+          @input="fetchFees"
+          :disabled="isOpening"
+        ></b-input>
+
+        <!-- <small>{{ btc.confirmed.toLocaleString() }} Sats available out of {{ btc.total.toLocaleString() }} and {{ btc.pending.toLocaleString() }} pending</small> -->
+      </b-col>
+
+      <b-col col cols="12">
+        <div class="mt-2 d-flex w-100 justify-content-between">
+          <div>
+            <small class="text-danger align-self-center" v-if="error">{{ error }}</small>
+            <small
+              class="text-muted align-self-center"
+              v-else-if="fee.fast.total"
+            >Mining fee: {{ fee.fast.total }} Sats</small>
+          </div>
+          <b-button
+            type="submit"
+            variant="success"
+            :disabled="isOpening"
+          >{{ this.isOpening ? 'Opening...' : 'Open Channel' }}</b-button>
+        </div>
+      </b-col>
+    </b-row>
+  </form>
+</template>
+
+<script>
+import API from "@/helpers/api";
+export default {
+  props: {},
+  data() {
+    return {
+      peerConnectionCode: "",
+      fundingAmount: "",
+      isOpening: false,
+      fee: {
+        fast: {
+          total: 0,
+          perByte: "--",
+          error: ""
+        },
+        normal: {
+          total: 0,
+          perByte: "--",
+          error: ""
+        },
+        slow: {
+          total: 0,
+          perByte: "--",
+          error: ""
+        },
+        cheapest: {
+          total: 0,
+          perByte: "--",
+          error: ""
+        }
+      },
+      error: "",
+      feeTimeout: null
+    };
+  },
+  computed: {
+    // btc() {
+    //   return this.$store.state.bitcoin.balance;
+    // }
+  },
+  methods: {
+    async openChannel() {
+      this.isOpening = true;
+
+      if (!this.peerConnectionCode || !this.fundingAmount) {
+        this.error = "Please fill all fields";
+        this.isOpening = false;
+        return;
+      }
+
+      if (this.fee.fast.error) {
+        this.isOpening = false;
+        this.error = this.fee.fast.error;
+        return;
+      }
+
+      this.error = "";
+
+      const payload = {
+        amt: parseInt(this.fundingAmount) || 0,
+        name: "",
+        purpose: "",
+        satPerByte: parseInt(this.fee.fast.perByte)
+      };
+
+      const parsedConnectionCode = this.peerConnectionCode.match(
+        /^(.*?)@(.*?)(?::([0-9]+))?$/
+      );
+
+      if (parsedConnectionCode) {
+        payload.pubKey = parsedConnectionCode[1];
+        payload.ip = parsedConnectionCode[2];
+
+        // If we matched a port in the connection code
+        // Otherwise the backend will automatically determine which port to use
+        if (parsedConnectionCode[3]) {
+          payload.port = parsedConnectionCode[3];
+        }
+      } else {
+        this.isOpening = false;
+        this.error = "Please check the peer connection code";
+        return;
+      }
+
+      //to do: connect to onion node if only the user's node is running tor
+
+      try {
+        await API.post(
+          `${process.env.VUE_APP_API_URL}api/v1/lnd/channel/open`,
+          payload
+        );
+        this.isOpening = false;
+        this.$emit("channelopen");
+        //channel
+        setTimeout(() => {
+          this.$bvToast.toast(
+            `Channel of ${this.fundingAmount} Sats opened successfully`,
+            {
+              title: "Lightning Network",
+              autoHideDelay: 3000,
+              variant: "success",
+              solid: true,
+              toaster: "b-toaster-bottom-right"
+            }
+          );
+        }, 200);
+      } catch (error) {
+        if (error.response && error.response.data) {
+          this.isOpening = false;
+          this.error = error.response.data;
+        }
+      }
+    },
+
+    async fetchFees() {
+      if (this.feeTimeout) {
+        clearTimeout(this.feeTimeout);
+      }
+
+      this.error = "";
+
+      this.feeTimeout = setTimeout(async () => {
+        if (this.fundingAmount) {
+          const payload = {
+            confTarget: 0,
+            amt: this.fundingAmount
+          };
+
+          const estimates = await API.get(
+            `${process.env.VUE_APP_API_URL}api/v1/lnd/channel/estimateFee`,
+            { params: payload }
+          );
+
+          if (estimates) {
+            for (const [speed, estimate] of Object.entries(estimates)) {
+              // If the API returned an error message
+              if (estimate.text) {
+                this.fee[speed].total = 0;
+                this.fee[speed].perByte = "N/A";
+                this.fee[speed].error = estimate.text;
+                this.error = estimate.text;
+              } else {
+                this.fee[speed].total = estimate.feeSat;
+                this.fee[speed].perByte = estimate.feerateSatPerByte;
+                this.fee[speed].sweepAmount = estimate.sweepAmount;
+                this.fee[speed].error = false;
+              }
+            }
+          }
+        }
+      }, 500);
+    }
+  },
+  components: {}
+};
+</script>
+
+<style lang="scss" scoped>
+</style>