// K8s ServiceAccount Schema - 由 ConfTemplate 生成
// 生成时间: 自动生成

export const k8sServiceAccountSchema = {
  id: 'k8s-serviceaccount',
  name: 'K8s ServiceAccount',
  icon: 'User',
  category: '云原生',
  description: 'Kubernetes 服务账户，用于 Pod 的身份认证',
  format: 'yaml',
  fileName: 'serviceaccount.yaml',
  groups: [
    {
      title: '基础信息',
      fields: [
        {
          key: 'name',
          label: 'ServiceAccount 名称',
          type: 'text',
          placeholder: 'my-serviceaccount',
          default: 'my-serviceaccount',
          required: true,
          tip: '将用作 ServiceAccount 的 metadata.name',
        },
        {
          key: 'namespace',
          label: '命名空间',
          type: 'text',
          placeholder: 'default',
          default: 'default',
        },
      ],
    },
    {
      title: '账户配置',
      fields: [
        {
          key: 'automountServiceAccountToken',
          label: '自动挂载 Token',
          type: 'switch',
          default: true,
          tip: '自动将 API Token 挂载到使用此 ServiceAccount 的 Pod',
        },
        {
          key: 'enableImagePullSecrets',
          label: '配置镜像拉取 Secret',
          type: 'switch',
          default: false,
          tip: '为此 ServiceAccount 配置私有镜像仓库认证',
        },
        {
          key: 'imagePullSecretName',
          label: '镜像拉取 Secret 名称',
          type: 'text',
          placeholder: 'my-registry-secret',
          default: '',
          dependsOn: { key: 'enableImagePullSecrets', value: true },
          tip: '已存在的 docker-registry Secret 名称',
        },
      ],
    },
  ],
}




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 generateK8sServiceAccountYaml(config) {
  const sa = {
    apiVersion: 'v1',
    kind: 'ServiceAccount',
    metadata: {
      name: config.name,
      namespace: config.namespace,
    },
  }

  if (config.automountServiceAccountToken === false) {
    sa.automountServiceAccountToken = false
  }

  if (config.enableImagePullSecrets && config.imagePullSecretName) {
    sa.imagePullSecrets = [{ name: config.imagePullSecretName }]
  }

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

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