<template>
  <div class="mcp-keys-panel">
    <div class="mcp-keys-header">
      <h2 class="mcp-keys-title">MCP servers</h2>
    </div>

    <p class="mcp-keys-description">
      Everything connected to your profiles. A server that offers a personal key
      slot runs under your own key — leave yours unset and it keeps using the
      shared key configured on this Navi.
    </p>

    <div v-if="serversStore.loading" class="mcp-keys-loading">
      <GnLoader circle label="Loading MCP servers" />
    </div>

    <div v-else-if="!serversStore.servers.length" class="mcp-keys-empty">
      <i class="ph ph-plugs-connected empty-icon" aria-hidden="true"></i>
      <p>No MCP servers are connected to any profile on this Navi.</p>
    </div>

    <div v-else class="mcp-keys-rows">
      <div
        v-for="server in serversStore.servers"
        :key="server.server_name"
        class="mcp-keys-row"
        :class="{ 'is-keyless': !server.accepts_user_key }"
      >
        <div class="mcp-keys-info">
          <div class="mcp-keys-server">{{ server.server_name }}</div>
          <div class="mcp-keys-where">
            {{ server.transport }}
            <template v-if="server.profiles.length"> · {{ server.profiles.join(', ') }}</template>
          </div>
          <div v-if="server.accepts_user_key" class="mcp-keys-slot">
            <template v-if="server.has_key">
              Personal key set {{ formatDate(server.updated_at) }} — used instead of
              the shared key ({{ keyLocation(server) }}).
            </template>
            <template v-else>
              No personal key — the shared key from the config is used
              ({{ keyLocation(server) }}).
            </template>
          </div>
          <div v-else class="mcp-keys-noslot">
            No personal key slot — runs on the shared config.
          </div>
        </div>

        <template v-if="server.accepts_user_key">
          <GnInput
            v-model="keys[server.server_name]"
            type="password"
            :placeholder="server.has_key ? '••• saved — enter a new key to replace' : 'Paste your key'"
            class="mcp-keys-input"
            @keyup.enter="onSave(server)"
          />
          <div class="mcp-keys-actions">
            <GnButton
              variant="primary"
              size="sm"
              :disabled="!keys[server.server_name] || serversStore.savingServer === server.server_name"
              @click="onSave(server)"
            >
              Save
            </GnButton>
            <GnButton
              v-if="server.has_key"
              variant="ghost"
              size="sm"
              :disabled="serversStore.savingServer === server.server_name"
              @click="onReset(server)"
            >
              Reset to default
            </GnButton>
          </div>
        </template>
      </div>
    </div>
  </div>
</template>

<script setup>
import { onMounted, reactive } from 'vue'
import { useMcpKeysStore } from '@/stores/mcpKeys.js'
import { useConfirm } from '@/composables/useConfirm.js'
import { useToast } from 'gnexus-ui-kit/vue'
import { GnButton, GnInput, GnLoader } from 'gnexus-ui-kit/vue'

const serversStore = useMcpKeysStore()
const confirm = useConfirm()
const toast = useToast()

const keys = reactive({})

onMounted(() => {
  serversStore.fetchServers()
})

function keyLocation(server) {
  return server.key_type === 'header'
    ? `${server.key_location} header${server.prefix ? ` (${server.prefix}…)` : ''}`
    : `${server.key_location} env`
}

async function onSave(server) {
  const key = (keys[server.server_name] || '').trim()
  if (!key) return
  try {
    await serversStore.saveKey(server.server_name, key)
    keys[server.server_name] = ''
    toast.success({ title: `Key saved for ${server.server_name}` })
  } catch (err) {
    toast.error({ title: 'Failed to save key', text: err.message })
  }
}

async function onReset(server) {
  const ok = await confirm(
    `Reset the key for "${server.server_name}" to the shared default?`
  )
  if (!ok) return
  try {
    await serversStore.resetKey(server.server_name)
    keys[server.server_name] = ''
    toast.success({ title: `Key reset for ${server.server_name}` })
  } catch (err) {
    toast.error({ title: 'Failed to reset key', text: err.message })
  }
}

function formatDate(iso) {
  const d = new Date(iso)
  return d.toLocaleDateString(undefined, { year: 'numeric', month: 'short', day: 'numeric' })
}
</script>

<style scoped lang="scss">
@use 'kit-deps' as *;

.mcp-keys-panel {
  margin-bottom: 24px;
}

.mcp-keys-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.mcp-keys-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0;
  color: var(--gn-color-text-medium);
}

.mcp-keys-description {
  margin: 0 0 16px;
  font-size: 0.875rem;
  color: var(--gn-color-text-medium);
}

.mcp-keys-loading {
  padding: 24px;
  text-align: center;
}

.mcp-keys-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 32px 24px;
  border: 1px dashed var(--gn-color-border);
  border-radius: var(--gn-radius-md);
  text-align: center;

  .empty-icon {
    font-size: 2rem;
    color: var(--gn-color-text-dimmed);
  }

  p {
    margin: 0;
    max-width: 52ch;
    font-size: 0.875rem;
    color: var(--gn-color-text-medium);
  }
}

.mcp-keys-rows {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mcp-keys-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--gn-color-border);
  border-radius: var(--gn-radius-md);

  // Servers without a key slot are context, not controls — keep them quieter.
  &.is-keyless {
    border-color: var(--gn-border-color-muted);
    background: var(--gn-surface-panel-muted, transparent);
  }
}

.mcp-keys-info {
  flex: 1 1 240px;
  min-width: 0;
}

.mcp-keys-server {
  font-size: 0.9rem;
  color: var(--gn-color-text-medium);
}

.mcp-keys-where {
  margin-top: 2px;
  font-size: 0.8rem;
  color: var(--gn-color-text-dark);
}

.mcp-keys-slot,
.mcp-keys-noslot {
  margin-top: 4px;
  font-size: 0.8rem;
  color: var(--gn-color-text-dimmed);
}

// The keyless hint is informational only — dim it further than a slot line.
.mcp-keys-noslot {
  color: var(--gn-color-text-dimmed);
  opacity: 0.75;
}

.mcp-keys-input {
  flex: 0 1 260px;
}

.mcp-keys-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

@media (max-width: 767px) {
  .mcp-keys-row {
    flex-direction: column;
    align-items: stretch;
  }

  .mcp-keys-input {
    flex: 1 1 auto;
  }
}
</style>