From 51e204b64a067a6a7a6416843558911e1deb3d71 Mon Sep 17 00:00:00 2001
From: ekzyis <ekzyis@ekzyis.com>
Date: Sun, 3 Dec 2023 08:51:40 +0100
Subject: [PATCH] Add frontend for market settlement

---
 db/market.go                          |  2 +-
 db/types.go                           |  2 +-
 server/router/handler/market.go       |  1 +
 vue/src/components/Market.vue         |  7 +-
 vue/src/components/MarketSettings.vue | 95 +++++++++++++++++++++++++++
 vue/src/index.css                     |  3 +
 vue/src/main.js                       |  4 +-
 7 files changed, 110 insertions(+), 4 deletions(-)
 create mode 100644 vue/src/components/MarketSettings.vue

diff --git a/db/market.go b/db/market.go
index 54a2a03..1c7f144 100644
--- a/db/market.go
+++ b/db/market.go
@@ -28,7 +28,7 @@ func (db *DB) CreateMarket(tx *sql.Tx, ctx context.Context, market *Market) erro
 }
 
 func (db *DB) FetchMarket(marketId int, market *Market) error {
-	if err := db.QueryRow("SELECT id, description, end_date FROM markets WHERE id = $1", marketId).Scan(&market.Id, &market.Description, &market.EndDate); err != nil {
+	if err := db.QueryRow("SELECT id, description, end_date, pubkey FROM markets WHERE id = $1", marketId).Scan(&market.Id, &market.Description, &market.EndDate, &market.Pubkey); err != nil {
 		return err
 	}
 	return nil
diff --git a/db/types.go b/db/types.go
index e319670..3b26fd0 100644
--- a/db/types.go
+++ b/db/types.go
@@ -29,7 +29,7 @@ type (
 		Id          Serial    `json:"id"`
 		Description string    `json:"description"`
 		EndDate     time.Time `json:"endDate"`
-		Pubkey      string
+		Pubkey      string    `json:"pubkey"`
 		InvoiceId   UUID
 	}
 	Share struct {
diff --git a/server/router/handler/market.go b/server/router/handler/market.go
index ab71af1..d787e18 100644
--- a/server/router/handler/market.go
+++ b/server/router/handler/market.go
@@ -44,6 +44,7 @@ func HandleMarket(sc context.ServerContext) echo.HandlerFunc {
 		}
 		data = map[string]any{
 			"Id":          market.Id,
+			"Pubkey":      market.Pubkey,
 			"Description": market.Description,
 			"Shares":      shares,
 		}
diff --git a/vue/src/components/Market.vue b/vue/src/components/Market.vue
index 9ad3c05..ca3076a 100644
--- a/vue/src/components/Market.vue
+++ b/vue/src/components/Market.vue
@@ -15,27 +15,32 @@
       <StyledLink :to="'/market/' + marketId + '/form'">form</StyledLink>
       <StyledLink :to="'/market/' + marketId + '/orders'">orders</StyledLink>
       <StyledLink :to="'/market/' + marketId + '/stats'">stats</StyledLink>
+      <StyledLink v-if="mine" :to="'/market/' + marketId + '/settings'"><i>settings</i></StyledLink>
     </nav>
   </header>
   <Suspense>
-    <router-view />
+    <router-view :market="market" />
   </Suspense>
 </template>
 
 <script setup>
 import { ref } from 'vue'
 import { useRoute } from 'vue-router'
+import { useSession } from '@/stores/session'
 import StyledLink from '@/components/StyledLink'
 
+const session = useSession()
 const route = useRoute()
 const marketId = route.params.id
 
 const market = ref(null)
+const mine = ref(false)
 const url = '/api/market/' + marketId
 await fetch(url)
   .then(r => r.json())
   .then(body => {
     market.value = body
+    mine.value = market.value.Pubkey === session.pubkey
   })
   .catch(console.error)
 
diff --git a/vue/src/components/MarketSettings.vue b/vue/src/components/MarketSettings.vue
new file mode 100644
index 0000000..a98480c
--- /dev/null
+++ b/vue/src/components/MarketSettings.vue
@@ -0,0 +1,95 @@
+<template>
+  <div id="container2" class="mt-3 mx-3">
+    <div class="grid grid-cols-2 my-3 items-center">
+      <label>market settlement</label>
+      <div class="grid grid-cols-2 my-3">
+        <button :class="yesClass" class="label success font-mono mx-1" @click.prevent="() => click('YES')">YES</button>
+        <button :class="noClass" class="label error font-mono mx-1" @click.prevent="() => click('NO')">NO</button>
+      </div>
+      <div class="col-span-2 mb-3" v-if="selected">
+        <p><b>Are you sure you want to settle this market?</b></p>
+        <p>
+          This will cancel all pending orders and halt trading indefinitely.
+          Users with winning shares will receive 100 sats per winning share. Users with losing shares receive nothing.
+        </p>
+        <p class="red"><b>You cannot undo this action.</b></p>
+      </div>
+      <button class="col-span-2" v-if="selected" @click.prevent="confirm">confirm</button>
+    </div>
+    <div v-if="err" class="red text-center">{{ err }}</div>
+    <div v-if="success" class="green text-center">{{ success }}</div>
+  </div>
+</template>
+
+<script setup>
+
+import { computed, defineProps, ref } from 'vue'
+
+const props = defineProps(['market'])
+const market = ref(props.market)
+
+const err = ref(null)
+const success = ref(null)
+
+const selected = ref(null)
+const yesClass = computed(() => selected.value === 'YES' ? ['active'] : [])
+const noClass = computed(() => selected.value === 'NO' ? ['active'] : [])
+const click = (sel) => {
+  selected.value = selected.value === sel ? null : sel
+}
+
+const confirm = async () => {
+  const sid = market.value.Shares.find(s => s.Description === selected.value).Id
+  const url = '/api/market/' + market.value.Id + '/settle'
+  const body = JSON.stringify({ sid })
+  try {
+    await fetch(url, { method: 'POST', headers: { 'Content-type': 'application/json' }, body })
+  } catch (err) {
+    console.error(err)
+  }
+}
+
+</script>
+
+<style scoped>
+textarea {
+  padding: 0 0.25em;
+}
+
+.label {
+  width: auto;
+  padding: 0.2em 1em
+}
+
+.success.active {
+  background-color: #35df8d;
+  color: white;
+}
+
+.error.active {
+  background-color: #ff7386;
+  color: white;
+}
+
+#container2 {
+  max-width: 33vw;
+}
+
+@media only screen and (max-width: 1024px) {
+  #container2 {
+    max-width: 80vw;
+  }
+}
+
+@media only screen and (max-width: 768px) {
+  #container2 {
+    max-width: 90vw;
+  }
+}
+
+@media only screen and (max-width: 640px) {
+  #container2 {
+    max-width: 100vw;
+  }
+}
+</style>
diff --git a/vue/src/index.css b/vue/src/index.css
index f6f4a29..c40aa51 100644
--- a/vue/src/index.css
+++ b/vue/src/index.css
@@ -21,6 +21,9 @@ button:disabled {
 input {
   color: #000;
 }
+textarea {
+  color: #000;
+}
 
 a {
   color: #8787a4;
diff --git a/vue/src/main.js b/vue/src/main.js
index df99e96..26358ad 100644
--- a/vue/src/main.js
+++ b/vue/src/main.js
@@ -17,6 +17,7 @@ import UserOrders from '@/components/UserOrders'
 import OrderForm from '@/components/OrderForm'
 import MarketOrders from '@/components/MarketOrders'
 import MarketStats from '@/components/MarketStats'
+import MarketSettings from '@/components/MarketSettings'
 
 const routes = [
   {
@@ -43,7 +44,8 @@ const routes = [
     children: [
       { path: 'form', name: 'form', component: OrderForm },
       { path: 'orders', name: 'market-orders', component: MarketOrders },
-      { path: 'stats', name: 'market-stats', component: MarketStats }
+      { path: 'stats', name: 'market-stats', component: MarketStats },
+      { path: 'settings', name: 'market-settings', component: MarketSettings }
     ]
   },
   {