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

export const k8sIngressSchema = {
  id: 'k8s-ingress',
  name: 'K8s Ingress',
  icon: 'Globe',
  category: '云原生',
  description: 'Kubernetes Ingress 网络入口资源',
  format: 'yaml',
  fileName: 'ingress.yaml',
  groups: [
    {
      title: '基础信息',
      fields: [
        {
          key: 'name',
          label: 'Ingress 名称',
          type: 'text',
          placeholder: 'my-ingress',
          default: 'my-ingress',
          required: true,
          tip: '将用作 Ingress 资源名称',
        },
        {
          key: 'namespace',
          label: '命名空间',
          type: 'text',
          placeholder: 'default',
          default: 'default',
        },
        {
          key: 'ingressClassName',
          label: 'Ingress Class',
          type: 'select',
          options: [
            { label: 'nginx', value: 'nginx' },
            { label: 'traefik', value: 'traefik' },
            { label: '（不指定）', value: '' },
          ],
          default: 'nginx',
          tip: '选择 Ingress 控制器类型',
        },
      ],
    },
    {
      title: '路由规则',
      fields: [
        {
          key: 'host',
          label: '域名',
          type: 'text',
          placeholder: 'example.com',
          default: 'example.com',
          required: true,
          tip: '匹配的主机名',
        },
        {
          key: 'path',
          label: '路径',
          type: 'text',
          placeholder: '/',
          default: '/',
        },
        {
          key: 'pathType',
          label: '路径类型',
          type: 'select',
          options: [
            { label: 'Prefix', value: 'Prefix' },
            { label: 'Exact', value: 'Exact' },
            { label: 'ImplementationSpecific', value: 'ImplementationSpecific' },
          ],
          default: 'Prefix',
        },
        {
          key: 'backendServiceName',
          label: '后端 Service 名称',
          type: 'text',
          placeholder: 'my-service',
          default: '',
          required: true,
          tip: '流量转发到的 Service 名称',
        },
        {
          key: 'backendServicePort',
          label: '后端 Service 端口',
          type: 'number',
          min: 1,
          max: 65535,
          default: 80,
          required: true,
        },
      ],
    },
    {
      title: 'TLS 配置',
      fields: [
        {
          key: 'enableTls',
          label: '启用 TLS',
          type: 'switch',
          default: false,
          tip: '开启 HTTPS 终止',
        },
        {
          key: 'tlsSecretName',
          label: 'TLS Secret 名称',
          type: 'text',
          placeholder: 'my-tls-secret',
          default: '',
          dependsOn: 'enableTls',
          tip: '包含 TLS 证书的 Secret 名称',
        },
      ],
    },
    {
      title: 'Annotations',
      fields: [
        {
          key: 'enableCors',
          label: '启用 CORS',
          type: 'switch',
          default: false,
          tip: '添加 nginx.ingress.kubernetes.io/enable-cors 注解',
        },
        {
          key: 'rewriteTarget',
          label: '启用路径重写',
          type: 'switch',
          default: false,
          tip: '添加 nginx.ingress.kubernetes.io/rewrite-target 注解',
        },
      ],
    },
  ],
}




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 generateK8sIngressYaml(config) {
  const annotations = {}
  if (config.enableCors) {
    annotations['nginx.ingress.kubernetes.io/enable-cors'] = 'true'
  }
  if (config.rewriteTarget) {
    annotations['nginx.ingress.kubernetes.io/rewrite-target'] = '/'
  }

  const ingress = {
    apiVersion: 'networking.k8s.io/v1',
    kind: 'Ingress',
    metadata: {
      name: config.name,
      namespace: config.namespace,
      annotations: Object.keys(annotations).length > 0 ? annotations : undefined,
    },
    spec: {
      ingressClassName: config.ingressClassName || undefined,
      rules: [
        {
          host: config.host,
          http: {
            paths: [
              {
                path: config.path,
                pathType: config.pathType,
                backend: {
                  service: {
                    name: config.backendServiceName,
                    port: {
                      number: Number(config.backendServicePort),
                    },
                  },
                },
              },
            ],
          },
        },
      ],
    },
  }

  if (config.enableTls && config.tlsSecretName) {
    ingress.spec.tls = [
      {
        hosts: [config.host],
        secretName: config.tlsSecretName,
      },
    ]
  }

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

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