From 392728fd4a7d735ddcacbdca6d512dec99e46b18 Mon Sep 17 00:00:00 2001
From: Trent Larson <trent@trentlarson.com>
Date: Tue, 14 Mar 2023 17:03:32 -0600
Subject: [PATCH] feat: allow entry and send of a Give to/from addresses in
 contact list

---
 src/views/ContactsView.vue | 177 ++++++++++++++++++++++++++++++++-----
 1 file changed, 157 insertions(+), 20 deletions(-)

diff --git a/src/views/ContactsView.vue b/src/views/ContactsView.vue
index eb204f1..f8c6206 100644
--- a/src/views/ContactsView.vue
+++ b/src/views/ContactsView.vue
@@ -69,17 +69,28 @@
 
     <!-- eslint-disable-next-line -->
     <div
-      class="block flex w-full"
+      class="flex justify-between"
     >
       <!-- eslint-disable-next-line -->
-      <button
-        href=""
-        class="text-md uppercase bg-slate-500 text-white px-1.5 py-2 rounded-md mb-6"
-        v-if="showGiveTotals"
-        @click="loadGives()"
-      >
-        Load Totals
-      </button>
+      <div class="w-1/2 text-left">
+        <button
+          href=""
+          class="left text-md uppercase bg-slate-500 text-white px-1.5 py-2 rounded-md mb-6"
+          v-if="showGiveTotals"
+          @click="loadGives()"
+        >
+          Load Totals
+        </button>
+      </div>
+      <div class="w-1/2 text-right">
+        Hours to Add:
+        <input
+          class="border border rounded border-slate-400 w-24 text-right"
+          type="text"
+          placeholder="1"
+          v-model="hourInput"
+        />
+      </div>
     </div>
 
     <!-- Results List -->
@@ -97,11 +108,20 @@
           <div class="text-sm truncate">{{ contact.publicKeyBase64 }}</div>
           <div v-if="showGiveTotals" class="float-right">
             <div class="float-right">
-              to: {{ contactGivenTotals[contact.did] || 0 }}
-            </div>
-            <br />
-            <div class="float-right">
-              from: {{ contactReceivedTotals[contact.did] || 0 }}
+              to: {{ givenByMeTotals[contact.did] || 0 }}
+              <button
+                class="text-md uppercase bg-slate-500 text-white px-1.5 py-2 rounded-md mb-6"
+                @click="onClickAddGive(identity.did, contact.did)"
+              >
+                +
+              </button>
+              by: {{ givenToMeTotals[contact.did] || 0 }}
+              <button
+                class="text-md uppercase bg-slate-500 text-white px-1.5 py-2 rounded-md mb-6"
+                @click="onClickAddGive(contact.did, identity.did)"
+              >
+                +
+              </button>
             </div>
           </div>
         </div>
@@ -111,14 +131,24 @@
 </template>
 
 <script lang="ts">
+import { AxiosError } from "axios";
+import * as didJwt from "did-jwt";
 import { Options, Vue } from "vue-class-component";
-import { IIdentifier } from "@veramo/core";
 
 import { AppString } from "@/constants/app";
-import { accessToken } from "@/libs/crypto";
+import { accessToken, SimpleSigner } from "@/libs/crypto";
+import { IIdentifier } from "@veramo/core";
 import { db } from "../db";
 import { Contact } from "../db/tables/contacts.ts";
 
+export interface GiveVerifiableCredential {
+  "@context": string;
+  "@type": string;
+  agent: { identifier: string };
+  recipient: { identifier: string };
+  object: { amountOfThisGood: number; unitCode: string };
+}
+
 @Options({
   components: {},
 })
@@ -126,9 +156,10 @@ export default class ContactsView extends Vue {
   contacts: Contact[] = [];
   contactInput = "";
   // { "did:...": amount } entry for each contact
-  contactGivenTotals = {};
+  givenByMeTotals = {};
   // { "did:...": amount } entry for each contact
-  contactReceivedTotals = {};
+  givenToMeTotals = {};
+  hourInput = 0;
   identity: IIdentifier = null;
   errorMessage = "";
   showGiveTotals = false;
@@ -188,7 +219,7 @@ export default class ContactsView extends Vue {
           }
         }
         //console.log("Done retrieving gives", contactTotals);
-        this.contactGivenTotals = contactTotals;
+        this.givenByMeTotals = contactTotals;
       }
     } catch (error) {
       this.errorMessage = "" + error;
@@ -216,11 +247,117 @@ export default class ContactsView extends Vue {
           }
         }
         //console.log("Done retrieving receipts", contactTotals);
-        this.contactReceivedTotals = contactTotals;
+        this.givenToMeTotals = contactTotals;
       }
     } catch (error) {
       this.errorMessage = "" + error;
     }
   }
+
+  // from https://stackoverflow.com/a/175787/845494
+  private isNumeric(str): boolean {
+    return !isNaN(str) && !isNaN(parseFloat(str));
+  }
+
+  async onClickAddGive(fromDid: string, toDid: string): void {
+    if (!this.hourInput) {
+      this.errorMessage = "Giving 0 hours does nothing.";
+    } else if (!this.isNumeric(this.hourInput)) {
+      this.errorMessage =
+        "This is not a valid number of hours: " + this.hourInput;
+    } else {
+      this.errorMessage = "";
+      this.createAndSubmitGive(fromDid, toDid, parseFloat(this.hourInput));
+    }
+  }
+
+  private async createAndSubmitGive(
+    fromDid: string,
+    toDid: string,
+    amount: number
+  ): void {
+    // Make a claim
+    const vcClaim: GiveVerifiableCredential = {
+      "@context": "https://schema.org",
+      "@type": "GiveAction",
+      agent: { identifier: fromDid },
+      recipient: { identifier: toDid },
+      object: { amountOfThisGood: amount, unitCode: "HUR" },
+    };
+    // Make a payload for the claim
+    const vcPayload = {
+      vc: {
+        "@context": ["https://www.w3.org/2018/credentials/v1"],
+        type: ["VerifiableCredential"],
+        credentialSubject: vcClaim,
+      },
+    };
+    // Create a signature using private key of identity
+    if (this.identity.keys[0].privateKeyHex !== null) {
+      // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+      const privateKeyHex: string = this.identity.keys[0].privateKeyHex!;
+      const signer = await SimpleSigner(privateKeyHex);
+      const alg = undefined;
+      // Create a JWT for the request
+      const vcJwt: string = await didJwt.createJWT(vcPayload, {
+        alg: alg,
+        issuer: this.identity.did,
+        signer: signer,
+      });
+
+      // Make the xhr request payload
+
+      const payload = JSON.stringify({ jwtEncoded: vcJwt });
+      const endorserApiServer = AppString.DEFAULT_ENDORSER_API_SERVER;
+      const url = endorserApiServer + "/api/v2/claim";
+      const token = await accessToken(this.identity);
+      const headers = {
+        "Content-Type": "application/json",
+        Authorization: "Bearer " + token,
+      };
+
+      try {
+        const resp = await this.axios.post(url, payload, { headers });
+        console.log("Got resp data:", resp.data);
+        if (resp.data?.success?.handleId) {
+          this.errorMessage = "";
+          this.alertTitle = "";
+          this.alertMessage = "";
+          if (fromDid === this.identity.did) {
+            this.givenByMeTotals[toDid] = this.givenByMeTotals[toDid] + amount;
+            // do this to update the UI
+            // eslint-disable-next-line no-self-assign
+            this.givenByMeTotals = this.givenByMeTotals;
+          } else {
+            this.givenToMeTotals[fromDid] =
+              this.givenToMeTotals[fromDid] + amount;
+            // do this to update the UI
+            // eslint-disable-next-line no-self-assign
+            this.givenToMeTotals = this.givenToMeTotals;
+          }
+        }
+      } catch (error) {
+        let userMessage = "There was an error. See logs for more info.";
+        const serverError = error as AxiosError;
+        if (serverError) {
+          this.isAlertVisible = true;
+          if (serverError.message) {
+            this.alertTitle = "User Message";
+            userMessage = serverError.message; // This is info for the user.
+            this.alertMessage = userMessage;
+          } else {
+            this.alertTitle = "Server Message";
+            this.alertMessage = JSON.stringify(serverError.toJSON());
+          }
+        } else {
+          console.log("Here's the full error trying to save the claim:", error);
+          this.alertTitle = "Claim Error";
+          this.alertMessage = error as string;
+        }
+        // Now set that error for the user to see.
+        this.errorMessage = userMessage;
+      }
+    }
+  }
 }
 </script>