/**
 * K8s CronJob 生产级 Schema — 由 ConfTemplate 生成
 * 增强: 容器端口、资源限制、环境变量、卷挂载、安全上下文、ServiceAccount
 */

export const k8sCronJobSchema = {
  id: 'k8s-cronjob',
  name: 'K8s CronJob',
  icon: 'Box',
  category: 'K8S 工作负载',
  description: 'Kubernetes CronJob — 定时调度批处理任务（生产级）',
  format: 'yaml',
  fileName: 'cronjob.yaml',
  groups: [
    {
      title: '基础信息',
      fields: [
        {
          key: 'name',
          label: 'CronJob 名称',
          type: 'text',
          placeholder: 'my-cronjob',
          default: 'my-cronjob',
          required: true,
        },
        {
          key: 'namespace',
          label: '命名空间',
          type: 'text',
          placeholder: 'default',
          default: 'default',
        },
        {
          key: 'image',
          label: '容器镜像',
          type: 'text',
          placeholder: 'busybox:latest',
          default: 'busybox:latest',
          required: true,
        },
        {
          key: 'imagePullPolicy',
          label: '镜像拉取策略',
          type: 'select',
          options: [
            { label: 'IfNotPresent (推荐)', value: 'IfNotPresent' },
            { label: 'Always (每次拉取)', value: 'Always' },
            { label: 'Never (仅本地)', value: 'Never' },
          ],
          default: 'IfNotPresent',
        },
        {
          key: 'command',
          label: 'Command',
          type: 'text',
          placeholder: 'echo hello',
          default: 'echo hello',
          required: true,
          tip: '容器启动命令',
        },
      ],
    },
    {
      title: '调度配置',
      fields: [
        {
          key: 'schedule',
          label: 'Cron 表达式',
          type: 'text',
          placeholder: '0 * * * *',
          default: '0 * * * *',
          required: true,
          tip: '标准 cron 格式: 分 时 日 月 周',
        },
        {
          key: 'concurrencyPolicy',
          label: '并发策略',
          type: 'select',
          options: [
            { label: 'Allow - 允许并发', value: 'Allow' },
            { label: 'Replace - 替换上一个', value: 'Replace' },
            { label: 'Forbid - 禁止并发', value: 'Forbid' },
          ],
          default: 'Allow',
        },
        {
          key: 'suspend',
          label: '暂停调度',
          type: 'switch',
          default: false,
          tip: '暂停后不再创建新的 Job',
        },
      ],
    },
    {
      title: '历史与清理',
      fields: [
        {
          key: 'successfulJobsHistoryLimit',
          label: '成功 Job 保留数',
          type: 'number',
          min: 0,
          max: 10,
          default: 3,
        },
        {
          key: 'failedJobsHistoryLimit',
          label: '失败 Job 保留数',
          type: 'number',
          min: 0,
          max: 10,
          default: 1,
        },
      ],
    },
    {
      title: 'Job 配置',
      fields: [
        {
          key: 'restartPolicy',
          label: '重启策略',
          type: 'select',
          options: [
            { label: 'OnFailure (推荐)', value: 'OnFailure' },
            { label: 'Never', value: 'Never' },
          ],
          default: 'OnFailure',
        },
        {
          key: 'backoffLimit',
          label: '重试次数上限',
          type: 'number',
          min: 0,
          max: 100,
          default: 6,
        },
        {
          key: 'activeDeadlineSeconds',
          label: '超时时间 (秒)',
          type: 'number',
          min: 0,
          max: 86400,
          default: 0,
          tip: '0 表示不限制超时',
        },
        {
          key: 'ttlSecondsAfterFinished',
          label: '自动清理 (秒)',
          type: 'number',
          min: 0,
          max: 86400,
          default: 0,
          tip: '完成后自动删除 Job，0 表示保留',
        },
      ],
    },
    {
      title: '容器端口',
      fields: [
        { key: 'containerPort', label: '容器端口', type: 'number', min: 1, max: 65535, default: 80 },
        { key: 'portName', label: '端口名称', type: 'text', default: 'http' },
        { key: 'protocol', label: '协议', type: 'select', options: [{ label: 'TCP', value: 'TCP' }, { label: 'UDP', value: 'UDP' }], default: 'TCP' },
      ],
    },
    {
      title: '资源限制',
      fields: [
        { key: 'cpuRequest', label: 'CPU Requests', type: 'select', options: [
          { label: '50m', value: '50m' },{ label: '100m', value: '100m' },{ label: '200m', value: '200m' },
          { label: '500m', value: '500m' },{ label: '1', value: '1' },{ label: '2', value: '2' },
        ], default: '100m' },
        { key: 'cpuLimit', label: 'CPU Limits', type: 'select', options: [
          { label: '200m', value: '200m' },{ label: '500m', value: '500m' },{ label: '1', value: '1' },
          { label: '2', value: '2' },{ label: '4', value: '4' },
        ], default: '500m' },
        { key: 'memoryRequest', label: 'Memory Requests', type: 'select', options: [
          { label: '64Mi', value: '64Mi' },{ label: '128Mi', value: '128Mi' },{ label: '256Mi', value: '256Mi' },
          { label: '512Mi', value: '512Mi' },{ label: '1Gi', value: '1Gi' },
        ], default: '128Mi' },
        { key: 'memoryLimit', label: 'Memory Limits', type: 'select', options: [
          { label: '128Mi', value: '128Mi' },{ label: '256Mi', value: '256Mi' },{ label: '512Mi', value: '512Mi' },
          { label: '1Gi', value: '1Gi' },{ label: '2Gi', value: '2Gi' },{ label: '4Gi', value: '4Gi' },
        ], default: '256Mi' },
      ],
    },
    {
      title: '环境变量',
      fields: [
        { key: 'enableEnv', label: '定义环境变量', type: 'switch', default: false },
        { key: 'envVars', label: '环境变量 (KEY=VALUE)', type: 'text', placeholder: 'APP_ENV=production\nLOG_LEVEL=info', default: 'APP_ENV=production\nLOG_LEVEL=info', dependsOn: { key: 'enableEnv', value: true }, tip: '每行一个，格式 KEY=VALUE' },
        { key: 'enableEnvFromConfigMap', label: '从 ConfigMap 导入', type: 'switch', default: false },
        { key: 'envFromConfigMapName', label: 'ConfigMap 名称', type: 'text', default: 'my-config', dependsOn: { key: 'enableEnvFromConfigMap', value: true } },
        { key: 'enableEnvFromSecret', label: '从 Secret 导入', type: 'switch', default: false },
        { key: 'envFromSecretName', label: 'Secret 名称', type: 'text', default: 'my-secret', dependsOn: { key: 'enableEnvFromSecret', value: true } },
      ],
    },
    {
      title: '卷挂载',
      fields: [
        { key: 'enableVolumeMount', label: '挂载卷', type: 'switch', default: false },
        { key: 'volumeType', label: '卷类型', type: 'select', options: [
          { label: 'emptyDir - 临时目录', value: 'emptyDir' },
          { label: 'PersistentVolumeClaim', value: 'pvc' },
          { label: 'ConfigMap', value: 'configMap' },
          { label: 'Secret', value: 'secret' },
          { label: 'HostPath - 主机路径', value: 'hostPath' },
        ], default: 'emptyDir', dependsOn: { key: 'enableVolumeMount', value: true } },
        { key: 'volumeName', label: '卷名称', type: 'text', default: 'data', dependsOn: { key: 'enableVolumeMount', value: true } },
        { key: 'volumeMountPath', label: '挂载路径', type: 'text', default: '/data', dependsOn: { key: 'enableVolumeMount', value: true } },
        { key: 'volumeReadOnly', label: '只读挂载', type: 'switch', default: false, dependsOn: { key: 'enableVolumeMount', value: true } },
        { key: 'pvcClaimName', label: 'PVC 名称', type: 'text', default: 'my-pvc', dependsOn: { key: 'volumeType', value: 'pvc' } },
        { key: 'configMapName', label: 'ConfigMap 名称', type: 'text', default: 'my-config', dependsOn: { key: 'volumeType', value: 'configMap' } },
        { key: 'secretVolumeName', label: 'Secret 名称', type: 'text', default: 'my-secret', dependsOn: { key: 'volumeType', value: 'secret' } },
        { key: 'hostPath', label: '主机路径', type: 'text', default: '/tmp/data', dependsOn: { key: 'volumeType', value: 'hostPath' } },
      ],
    },
    {
      title: '安全上下文 (Security Context)',
      fields: [
        { key: 'enableSecurityContext', label: '启用安全上下文', type: 'switch', default: false },
        { key: 'runAsUser', label: '运行用户 UID', type: 'number', min: 0, max: 65535, default: 1000, dependsOn: { key: 'enableSecurityContext', value: true } },
        { key: 'runAsGroup', label: '运行用户组 GID', type: 'number', min: 0, max: 65535, default: 1000, dependsOn: { key: 'enableSecurityContext', value: true } },
        { key: 'runAsNonRoot', label: '禁止 Root 运行', type: 'switch', default: true, dependsOn: { key: 'enableSecurityContext', value: true } },
        { key: 'readOnlyRootFilesystem', label: '只读根文件系统', type: 'switch', default: false, dependsOn: { key: 'enableSecurityContext', value: true }, tip: '增强安全性，需要写入的目录用 emptyDir 挂载' },
        { key: 'allowPrivilegeEscalation', label: '允许提权', type: 'switch', default: false, dependsOn: { key: 'enableSecurityContext', value: true } },
        { key: 'fsGroup', label: '文件系统 GID', type: 'number', min: 0, max: 65535, default: 2000, dependsOn: { key: 'enableSecurityContext', value: true }, tip: '卷文件的所有组' },
      ],
    },
    {
      title: 'ServiceAccount',
      fields: [
        { key: 'serviceAccountName', label: 'ServiceAccount 名称', type: 'text', placeholder: '留空使用 default', default: '', tip: 'RBAC 权限控制' },
      ],
    },
  ],
}

function toYaml(obj, indent = 0) {
  const lines = []
  const prefix = '  '.repeat(indent)
  for (const [key, value] of Object.entries(obj)) {
    if (value === null || value === undefined || value === '') continue
    if (Array.isArray(value)) {
      lines.push(`${prefix}${key}:`)
      for (const item of value) {
        if (typeof item === 'object' && item !== null) {
          const entries = Object.entries(item).filter(([, v]) => v !== null && v !== undefined && v !== '')
          if (entries.length === 0) continue
          const first = entries[0]
          lines.push(`${prefix}  - ${first[0]}: ${typeof first[1] === 'object' ? '' : first[1]}`)
          if (typeof first[1] === 'object') {
            lines.push(toYaml(first[1], indent + 3))
          }
          for (let i = 1; i < entries.length; i++) {
            const [k, v] = entries[i]
            if (typeof v === 'object') {
              lines.push(`${prefix}    ${k}:`)
              lines.push(toYaml(v, indent + 4))
            } else {
              lines.push(`${prefix}    ${k}: ${v}`)
            }
          }
        } else {
          lines.push(`${prefix}  - ${item}`)
        }
      }
    } else if (typeof value === 'object') {
      lines.push(`${prefix}${key}:`)
      lines.push(toYaml(value, indent + 1))
    } else {
      lines.push(`${prefix}${key}: ${value}`)
    }
  }
  return lines.join('\n')
}

export function generateK8sCronJobYaml(config) {
  const container = {
    name: config.name,
    image: config.image,
    imagePullPolicy: config.imagePullPolicy,
    command: config.command.split(' '),
  }

  // 容器端口
  if (config.containerPort) {
    container.ports = [{
      name: config.portName || 'http',
      containerPort: config.containerPort,
      protocol: config.protocol || 'TCP',
    }]
  }

  // 资源限制
  container.resources = {
    requests: { cpu: config.cpuRequest, memory: config.memoryRequest },
    limits: { cpu: config.cpuLimit, memory: config.memoryLimit },
  }

  // 环境变量
  if (config.enableEnv && config.envVars) {
    container.env = config.envVars.split('\n').filter(Boolean).map(line => {
      const [k, ...v] = line.split('=')
      return { name: k.trim(), value: v.join('=').trim() }
    })
  }
  if (config.enableEnvFromConfigMap || config.enableEnvFromSecret) {
    container.envFrom = []
    if (config.enableEnvFromConfigMap) container.envFrom.push({ configMapRef: { name: config.envFromConfigMapName } })
    if (config.enableEnvFromSecret) container.envFrom.push({ secretRef: { name: config.envFromSecretName } })
  }

  // 卷挂载
  const volumes = []
  if (config.enableVolumeMount) {
    container.volumeMounts = [{ name: config.volumeName, mountPath: config.volumeMountPath, readOnly: config.volumeReadOnly || undefined }]
    const vol = { name: config.volumeName }
    const vt = config.volumeType
    if (vt === 'emptyDir') vol.emptyDir = {}
    else if (vt === 'pvc') vol.persistentVolumeClaim = { claimName: config.pvcClaimName }
    else if (vt === 'configMap') vol.configMap = { name: config.configMapName }
    else if (vt === 'secret') vol.secret = { secretName: config.secretVolumeName }
    else if (vt === 'hostPath') vol.hostPath = { path: config.hostPath, type: 'DirectoryOrCreate' }
    volumes.push(vol)
  }

  // Security Context
  if (config.enableSecurityContext) {
    container.securityContext = {
      runAsUser: config.runAsUser,
      runAsGroup: config.runAsGroup,
      runAsNonRoot: config.runAsNonRoot,
      readOnlyRootFilesystem: config.readOnlyRootFilesystem || undefined,
      allowPrivilegeEscalation: config.allowPrivilegeEscalation,
    }
  }

  const podSpec = {
    containers: [container],
    restartPolicy: config.restartPolicy,
  }

  // ServiceAccount
  if (config.serviceAccountName) podSpec.serviceAccountName = config.serviceAccountName

  // Volumes
  if (volumes.length) podSpec.volumes = volumes

  // fsGroup
  if (config.enableSecurityContext && config.fsGroup) {
    podSpec.securityContext = { fsGroup: config.fsGroup }
  }

  const cronjob = {
    apiVersion: 'batch/v1',
    kind: 'CronJob',
    metadata: {
      name: config.name,
      namespace: config.namespace,
    },
    spec: {
      schedule: config.schedule,
      concurrencyPolicy: config.concurrencyPolicy,
      successfulJobsHistoryLimit: config.successfulJobsHistoryLimit,
      failedJobsHistoryLimit: config.failedJobsHistoryLimit,
      suspend: config.suspend || undefined,
      jobTemplate: {
        spec: {
          backoffLimit: config.backoffLimit,
          activeDeadlineSeconds: config.activeDeadlineSeconds > 0 ? config.activeDeadlineSeconds : undefined,
          ttlSecondsAfterFinished: config.ttlSecondsAfterFinished > 0 ? config.ttlSecondsAfterFinished : undefined,
          template: {
            spec: podSpec,
          },
        },
      },
    },
  }

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

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