API request input with method selector and send action

<!--
  Расхождение с апстримом: `IconPlaceholder` заменена инлайновым `<svg>`
  (lucide-react v0.545.0 "chevron-down") — см. docs/PORTING.md §5.
  Плавающий слой (`DropdownMenuContent`) не раскрывается в кейсе.
-->
<script setup lang="ts">
import { ref } from "vue"
import { DropdownMenu, DropdownMenuContent, DropdownMenuGroup, DropdownMenuItem, DropdownMenuTrigger } from "@/components/ui/dropdown-menu"
import { Field } from "@/components/ui/field"
import { InputGroup, InputGroupAddon, InputGroupButton, InputGroupInput } from "@/components/ui/input-group"

const httpMethodColors = {
  GET: "text-emerald-600 dark:text-emerald-400",
  POST: "text-blue-500",
  PUT: "text-amber-500",
  PATCH: "text-violet-500",
  DELETE: "text-destructive",
} as const

type HttpMethod = keyof typeof httpMethodColors

const httpMethods = Object.keys(httpMethodColors) as HttpMethod[]

const method = ref<HttpMethod>("GET")
</script>

<template>
  <Field class="max-w-md">
    <InputGroup>
      <InputGroupAddon>
        <DropdownMenu>
          <DropdownMenuTrigger as-child>
            <InputGroupButton
              variant="ghost"
              :class="['gap-1.5 font-mono text-xs', httpMethodColors[method]]"
              :aria-label="`HTTP method: ${method}`"
            >
              {{ method }}
              <svg
                xmlns="http://www.w3.org/2000/svg"
                width="24"
                height="24"
                viewBox="0 0 24 24"
                fill="none"
                stroke="currentColor"
                stroke-width="2"
                stroke-linecap="round"
                stroke-linejoin="round"
                class="lucide lucide-chevron-down size-3 opacity-60"
                aria-hidden="true"
              >
                <path d="m6 9 6 6 6-6" />
              </svg>
            </InputGroupButton>
          </DropdownMenuTrigger>
          <DropdownMenuContent align="start" class="w-28">
            <DropdownMenuGroup>
              <DropdownMenuItem
                v-for="item in httpMethods"
                :key="item"
                :class="['font-mono text-xs font-semibold', httpMethodColors[item]]"
                @click="method = item"
              >
                {{ item }}
              </DropdownMenuItem>
            </DropdownMenuGroup>
          </DropdownMenuContent>
        </DropdownMenu>
      </InputGroupAddon>

      <InputGroupInput value="/v1/agents/run" class="font-mono text-xs" aria-label="API endpoint path" />

      <InputGroupAddon align="inline-end">
        <InputGroupButton size="xs" aria-label="Send request">Send</InputGroupButton>
      </InputGroupAddon>
    </InputGroup>
  </Field>
</template>