<template>
  <div class="admin-tools-panel">
    <div class="admin-tools-header">
      <h2 class="admin-tools-title">Tools</h2>
      <GnButton
        variant="primary"
        size="sm"
        :loading="running"
        @click="onReload"
      >
        {{ running ? 'Reloading…' : 'Reload tools' }}
      </GnButton>
    </div>

    <p class="admin-tools-description">
      Re-reads the tools in <code>tools/</code>, the context providers, and reconnects
      every MCP server — no restart, no downtime. New tools are callable from the next
      message of every session. Admin only: it swaps the toolset all profiles resolve against.
    </p>

    <div v-if="report" class="admin-tools-report" :class="{ 'has-problems': !report.ok }">
      <div class="admin-tools-line">
        <i class="ph ph-check-circle" aria-hidden="true"></i>
        <span>
          {{ report.tools.length }} tool{{ report.tools.length === 1 ? '' : 's' }} loaded
          <template v-if="report.tools.length"> — {{ report.tools.join(', ') }}</template>
          <span class="admin-tools-total">({{ report.total_tools }} in the registry)</span>
        </span>
      </div>

      <div v-if="report.missing_enabled.length" class="admin-tools-line is-warning">
        <i class="ph ph-warning" aria-hidden="true"></i>
        <span>
          <code>enabled.json</code> names {{ report.missing_enabled.join(', ') }} — no such tool
          exists, so it is dropped from every profile.
        </span>
      </div>

      <div v-for="(error, file) in report.tool_errors" :key="file" class="admin-tools-line is-error">
        <i class="ph ph-x-circle" aria-hidden="true"></i>
        <span><code>{{ file }}</code>: {{ error }}</span>
      </div>

      <div v-if="report.mcp_error" class="admin-tools-line is-error">
        <i class="ph ph-x-circle" aria-hidden="true"></i>
        <span>MCP reload failed: {{ report.mcp_error }}</span>
      </div>
      <div v-else class="admin-tools-line">
        <i class="ph ph-plugs-connected" aria-hidden="true"></i>
        <span>
          {{ report.mcp_tools.length }} MCP tool{{ report.mcp_tools.length === 1 ? '' : 's' }} —
          {{ report.providers.length }} context provider{{ report.providers.length === 1 ? '' : 's' }}
        </span>
      </div>
    </div>
  </div>
</template>

<script setup>
import { ref } from 'vue'
import { useToast } from 'gnexus-ui-kit/vue'
import { GnButton } from 'gnexus-ui-kit/vue'
import * as api from '@/api/index.js'

const toast = useToast()
const running = ref(false)
const report = ref(null)

async function onReload() {
  running.value = true
  try {
    report.value = await api.reloadTools()
    if (report.value.ok) {
      toast.success({ title: `Reloaded ${report.value.tools.length} tool(s)` })
    } else {
      toast.error({ title: 'Reload finished with errors — see the panel' })
    }
  } catch (err) {
    toast.error({ title: 'Failed to reload tools', text: err.message })
  } finally {
    running.value = false
  }
}
</script>

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

.admin-tools-panel {
  margin-bottom: 24px;
}

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

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

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

  code {
    font-size: 0.8rem;
  }
}

.admin-tools-report {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px;
  border: 1px solid var(--gn-color-border);
  border-radius: var(--gn-radius-md);
  font-size: 0.85rem;
  color: var(--gn-color-text-medium);

  &.has-problems {
    border-color: var(--gn-color-danger, var(--gn-color-border));
  }
}

.admin-tools-line {
  display: flex;
  align-items: flex-start;
  gap: 8px;

  i {
    flex-shrink: 0;
    margin-top: 2px;
  }

  &.is-warning i {
    color: var(--gn-color-warning, inherit);
  }

  &.is-error i {
    color: var(--gn-color-danger, inherit);
  }

  code {
    font-size: 0.8rem;
  }
}

.admin-tools-total {
  color: var(--gn-color-text-dimmed);
}
</style>