<template>
  <div class="analysis-panel">
    <div class="panel-section">
      <DocumentUpload />
    </div>

    <div class="panel-section" v-if="documentStore.documents.length">
      <label class="section-label">Documents</label>
      <DocumentList />
    </div>

    <div class="panel-section" v-if="selectedDoc">
      <label class="section-label">Preview</label>
      <PagePreview
        :document-id="selectedDoc.id"
        :page="currentPage"
        :page-count="selectedDoc.pageCount"
        @update:page="currentPage = $event"
      />
    </div>

    <div class="panel-actions" v-if="selectedDoc">
      <button
        class="btn-analyze"
        :disabled="analysisStore.running"
        @click="runAnalysis"
      >
        <div v-if="analysisStore.running" class="spinner" />
        <svg v-else viewBox="0 0 20 20" fill="currentColor" class="btn-icon">
          <path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zM9.555 7.168A1 1 0 008 8v4a1 1 0 001.555.832l3-2a1 1 0 000-1.664l-3-2z" clip-rule="evenodd"/>
        </svg>
        {{ analysisStore.running ? 'Analyzing...' : 'Analyze' }}
      </button>
    </div>

    <div class="panel-section" v-if="analysisStore.currentAnalysis">
      <label class="section-label">Status</label>
      <div class="status-row">
        <span class="status-badge" :class="statusClass">
          {{ analysisStore.currentAnalysis.status }}
        </span>
      </div>
    </div>
  </div>
</template>

<script setup>
import { ref, computed } from 'vue'
import { useDocumentStore } from '../../document/store.js'
import { useAnalysisStore } from '../store.js'
import { DocumentUpload, DocumentList, PagePreview } from '../../document/index.js'

const documentStore = useDocumentStore()
const analysisStore = useAnalysisStore()
const currentPage = ref(1)

const selectedDoc = computed(() => {
  return documentStore.documents.find(d => d.id === documentStore.selectedId)
})

const statusClass = computed(() => {
  const status = analysisStore.currentAnalysis?.status
  return {
    'status-pending': status === 'PENDING',
    'status-running': status === 'RUNNING',
    'status-completed': status === 'COMPLETED',
    'status-failed': status === 'FAILED'
  }
})

async function runAnalysis() {
  if (!documentStore.selectedId) return
  await analysisStore.run(documentStore.selectedId)
}
</script>

<style scoped>
.analysis-panel {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 20px;
  overflow-y: auto;
  height: 100%;
}

.section-label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.panel-actions {
  padding-top: 4px;
}

.btn-analyze {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition);
}

.btn-analyze:hover:not(:disabled) { background: var(--accent-hover); }
.btn-analyze:disabled { opacity: 0.6; cursor: not-allowed; }
.btn-icon { width: 18px; height: 18px; }

.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.status-row {
  display: flex;
  align-items: center;
}

.status-badge {
  font-size: 12px;
  font-weight: 600;
  font-family: 'IBM Plex Mono', monospace;
  padding: 4px 10px;
  border-radius: 12px;
}

.status-pending { background: rgba(234, 179, 8, 0.15); color: var(--warning); }
.status-running { background: rgba(59, 130, 246, 0.15); color: var(--info); }
.status-completed { background: rgba(34, 197, 94, 0.15); color: var(--success); }
.status-failed { background: rgba(239, 68, 68, 0.15); color: var(--error); }
</style>
