// K8s PersistentVolumeClaim schema + YAML generator for ConfTemplate
// Generated: 2026-07-18

export const k8sPvcSchema = {
  id: 'k8s-pvc',
  name: 'K8s PersistentVolumeClaim',
  icon: 'HardDrive',
  category: '云原生',
  description: 'Kubernetes 持久化存储声明 (PVC)',
  format: 'yaml',
  fileName: 'pvc.yaml',
  groups: [
    {
      title: '基础信息',
      fields: [
        {
          key: 'name',
          label: 'PVC 名称',
          type: 'text',
          placeholder: 'my-pvc',
          default: 'my-pvc',
          required: true,
          tip: 'PersistentVolumeClaim 资源名称',
        },
        {
          key: 'namespace',
          label: '命名空间',
          type: 'text',
          placeholder: 'default',
          default: 'default',
        },
        {
          key: 'accessModes',
          label: '访问模式',
          type: 'select',
          options: [
            { label: 'ReadWriteOnce', value: 'ReadWriteOnce' },
            { label: 'ReadWriteMany', value: 'ReadWriteMany' },
            { label: 'ReadOnlyMany', value: 'ReadOnlyMany' },
          ],
          default: 'ReadWriteOnce',
          tip: '单节点读写 / 多节点读写 / 多节点只读',
        },
        {
          key: 'storageClassName',
          label: 'StorageClass 名称',
          type: 'text',
          placeholder: 'standard',
          default: 'standard',
        },
        {
          key: 'storageRequest',
          label: '请求存储容量',
          type: 'text',
          placeholder: '10Gi',
          default: '10Gi',
          required: true,
          tip: '例如 10Gi, 100Mi',
        },
        {
          key: 'volumeMode',
          label: '卷模式',
          type: 'select',
          options: [
            { label: 'Filesystem', value: 'Filesystem' },
            { label: 'Block', value: 'Block' },
          ],
          default: 'Filesystem',
        },
      ],
    },
  ],
}




function yamlScalar(v) {
  if (v === null || v === undefined) return ''
  if (typeof v === 'number' || typeof v === 'boolean') return String(v)
  const s = String(v)
  if (/[:#\n"'`]|^[\s\-]|[\s]$/.test(s) || /^(true|false|null|yes|no|on|off|~)$/i.test(s)) {
    return JSON.stringify(s)
  }
  return s
}

function isEmptyMapping(o) {
  if (!o || typeof o !== 'object' || Array.isArray(o)) return false
  return Object.values(o).every(v => v === null || v === undefined || v === '' || (typeof v === 'object' && isEmptyMapping(v)))
}

function toYaml(obj, baseIndent = '') {
  const lines = []
  for (const [key, value] of Object.entries(obj)) {
    if (value === null || value === undefined || value === '') continue
    if (Array.isArray(value)) {
      const items = value.filter(v => v !== null && v !== undefined && v !== '')
      if (!items.length) continue
      lines.push(`${baseIndent}${key}:`)
      for (const item of items) {
        if (item && typeof item === 'object' && !Array.isArray(item)) {
          if (isEmptyMapping(item)) continue
          const entries = Object.entries(item).filter(([, v]) => v !== null && v !== undefined && v !== '')
          if (!entries.length) continue
          const childIndent = baseIndent + '  '
          const subAllIndent = childIndent + '  '
          const subObj = {}
          for (const [k, v] of entries) subObj[k] = v
          const subRendered = toYaml(subObj, subAllIndent)
          const subLines = subRendered.split('\n')
          if (subLines[0].startsWith(subAllIndent)) {
            subLines[0] = childIndent + '- ' + subLines[0].slice(subAllIndent.length)
          } else {
            subLines[0] = childIndent + '- ' + subLines[0].trimStart()
          }
          lines.push(...subLines)
        } else {
          lines.push(`${baseIndent}  - ${yamlScalar(item)}`)
        }
      }
    } else if (typeof value === 'object') {
      if (isEmptyMapping(value)) {
        lines.push(`${baseIndent}${key}: {}`)
        continue
      }
      lines.push(`${baseIndent}${key}:`)
      const childIndent = baseIndent + '  '
      lines.push(toYaml(value, childIndent))
    } else {
      lines.push(`${baseIndent}${key}: ${yamlScalar(value)}`)
    }
  }
  return lines.join('\n')
}

export function generateK8sPvcYaml(config) {
  const pvc = {
    apiVersion: 'v1',
    kind: 'PersistentVolumeClaim',
    metadata: {
      name: config.name,
      namespace: config.namespace,
    },
    spec: {
      accessModes: [config.accessModes],
      storageClassName: config.storageClassName,
      volumeMode: config.volumeMode,
      resources: {
        requests: {
          storage: config.storageRequest,
        },
      },
    },
  }

  const header = `# K8s PersistentVolumeClaim - 由 ConfTemplate 生成
# 生成时间: ${new Date().toLocaleString('zh-CN')}
# 部署命令: kubectl apply -f ${config.fileName || 'pvc.yaml'}
`

  return header + '\n' + toYaml(pvc)
}