// container-utils.ts — K8s container spec ↔ form 转换工具
// 作者: Logan <admin@attacker.club>
import type {
  ContainerForm, ProbeDef, LifecycleHandler,
} from './types';
import type { JsonData } from '@/types/common';

// K8s container spec → form conversion // Logan.Li
export function toContainerForm(c: JsonData): ContainerForm {
  const probe = (p: JsonData): ProbeDef | null => {
    if (!p) return null;
    let type: ProbeDef['type'] = 'none';
    if (p.httpGet) type = 'httpGet';
    else if (p.tcpSocket) type = 'tcpSocket';
    else if (p.exec) type = 'exec';
    return {
      type,
      httpPath: p.httpGet?.path || '',
      httpPort: p.httpGet?.port ?? '',
      httpHost: p.httpGet?.host || '',
      tcpPort: p.tcpSocket?.port ?? '',
      execCommand: Array.isArray(p.exec?.command) ? p.exec.command.join('\n') : (p.exec?.command || ''),
      initialDelaySeconds: p.initialDelaySeconds,
      periodSeconds: p.periodSeconds,
      timeoutSeconds: p.timeoutSeconds,
      successThreshold: p.successThreshold,
      failureThreshold: p.failureThreshold,
    };
  };
  const lh = (h: JsonData): LifecycleHandler => {
    if (!h) return { type: 'none' };
    let type: LifecycleHandler['type'] = 'none';
    if (h.exec) type = 'exec';
    else if (h.httpGet) type = 'httpGet';
    else if (h.tcpSocket) type = 'tcpSocket';
    return {
      type,
      execCommand: Array.isArray(h.exec?.command) ? h.exec.command.join('\n') : '',
      httpPath: h.httpGet?.path || '',
      httpPort: h.httpGet?.port ?? '',
      tcpPort: h.tcpSocket?.port ?? '',
    };
  };
  const sc = c.securityContext;
  return {
    name: c.name || '',
    image: c.image || '',
    imagePullPolicy: c.imagePullPolicy || '',
    command: Array.isArray(c.command) ? c.command : [],
    args: Array.isArray(c.args) ? c.args : [],
    workingDir: c.workingDir || '',
    env: (Array.isArray(c.env) ? c.env : []).map((e: JsonData) => ({ name: e.name || '', value: e.value ?? '' })),
    ports: (Array.isArray(c.ports) ? c.ports : []).map((p: JsonData) => ({ name: p.name || '', containerPort: p.containerPort ?? '', protocol: p.protocol || 'TCP' })),
    resources: {
      requests: c.resources?.requests || {},
      limits: c.resources?.limits || {},
    },
    livenessProbe: probe(c.livenessProbe),
    readinessProbe: probe(c.readinessProbe),
    startupProbe: probe(c.startupProbe),
    lifecycle: c.lifecycle ? {
      postStart: c.lifecycle.postStart ? lh(c.lifecycle.postStart) : undefined,
      preStop: c.lifecycle.preStop ? lh(c.lifecycle.preStop) : undefined,
    } : null,
    securityContext: sc ? {
      runAsUser: sc.runAsUser,
      runAsGroup: sc.runAsGroup,
      runAsNonRoot: sc.runAsNonRoot,
      privileged: sc.privileged,
      readOnlyRootFilesystem: sc.readOnlyRootFilesystem,
      allowPrivilegeEscalation: sc.allowPrivilegeEscalation,
      capabilitiesAdd: sc.capabilities?.add || [],
      capabilitiesDrop: sc.capabilities?.drop || [],
    } : null,
    volumeMounts: (Array.isArray(c.volumeMounts) ? c.volumeMounts : []).map((m: JsonData) => ({
      name: m.name || '', mountPath: m.mountPath || '', subPath: m.subPath || '', readOnly: m.readOnly || false,
    })),
  };
}

// form → K8s container spec // Logan.Li
export function emptyContainer(name = ''): ContainerForm {
  return {
    name, image: '', imagePullPolicy: 'IfNotPresent',
    command: [], args: [], workingDir: '',
    env: [], ports: [], resources: {},
    livenessProbe: null, readinessProbe: null, startupProbe: null,
    lifecycle: null, securityContext: null, volumeMounts: [],
  };
}

export function probeToK8s(p: ProbeDef | null | undefined): JsonData {
  if (!p || p.type === 'none' || !p.type) return undefined;
  const out: JsonData = {};
  if (p.type === 'httpGet') {
    out.httpGet = {};
    if (p.httpPath) out.httpGet.path = p.httpPath;
    if (p.httpPort !== '' && p.httpPort != null) out.httpGet.port = typeof p.httpPort === 'number' ? p.httpPort : Number(p.httpPort);
    if (p.httpHost) out.httpGet.host = p.httpHost;
  } else if (p.type === 'tcpSocket') {
    out.tcpSocket = {};
    if (p.tcpPort !== '' && p.tcpPort != null) out.tcpSocket.port = typeof p.tcpPort === 'number' ? p.tcpPort : Number(p.tcpPort);
  } else if (p.type === 'exec') {
    const cmds = (p.execCommand || '').split('\n').map(s => s.trim()).filter(Boolean);
    if (cmds.length) out.exec = { command: cmds };
  }
  if (p.initialDelaySeconds != null) out.initialDelaySeconds = p.initialDelaySeconds;
  if (p.periodSeconds != null) out.periodSeconds = p.periodSeconds;
  if (p.timeoutSeconds != null) out.timeoutSeconds = p.timeoutSeconds;
  if (p.successThreshold != null) out.successThreshold = p.successThreshold;
  if (p.failureThreshold != null) out.failureThreshold = p.failureThreshold;
  return Object.keys(out).length > 0 ? out : undefined;
}

export function handlerToK8s(h: LifecycleHandler | undefined): JsonData {
  if (!h || h.type === 'none' || !h.type) return undefined;
  if (h.type === 'exec') {
    const cmds = (h.execCommand || '').split('\n').map(s => s.trim()).filter(Boolean);
    return cmds.length ? { exec: { command: cmds } } : undefined;
  }
  if (h.type === 'httpGet') {
    const o: JsonData = { httpGet: {} };
    if (h.httpPath) o.httpGet.path = h.httpPath;
    if (h.httpPort !== '' && h.httpPort != null) o.httpGet.port = Number(h.httpPort);
    return o;
  }
  if (h.type === 'tcpSocket') {
    const o: JsonData = { tcpSocket: {} };
    if (h.tcpPort !== '' && h.tcpPort != null) o.tcpSocket.port = Number(h.tcpPort);
    return o;
  }
  return undefined;
}

export function containerToK8s(c: ContainerForm): JsonData {
  const out: JsonData = { name: c.name };
  if (c.image) out.image = c.image;
  if (c.imagePullPolicy) out.imagePullPolicy = c.imagePullPolicy;
  if (c.workingDir) out.workingDir = c.workingDir;
  if (c.command.length > 0) out.command = c.command;
  if (c.args.length > 0) out.args = c.args;
  if (c.env.length > 0) {
    out.env = c.env.filter(e => e.name.trim()).map(e => {
      const o: JsonData = { name: e.name };
      if (e.value != null) o.value = e.value;
      return o;
    });
  }
  if (c.ports.length > 0) {
    out.ports = c.ports.filter(p => p.containerPort !== '').map(p => {
      const o: JsonData = { containerPort: typeof p.containerPort === 'number' ? p.containerPort : Number(p.containerPort) };
      if (p.name) o.name = p.name;
      if (p.protocol) o.protocol = p.protocol;
      return o;
    });
  }
  const req = c.resources.requests;
  const lim = c.resources.limits;
  const hasReq = req && Object.values(req).some(v => v && v.trim());
  const hasLim = lim && Object.values(lim).some(v => v && v.trim());
  if (hasReq || hasLim) {
    out.resources = {};
    if (hasReq) {
      out.resources.requests = {};
      if (req!.cpu?.trim()) out.resources.requests.cpu = req!.cpu;
      if (req!.memory?.trim()) out.resources.requests.memory = req!.memory;
    }
    if (hasLim) {
      out.resources.limits = {};
      if (lim!.cpu?.trim()) out.resources.limits.cpu = lim!.cpu;
      if (lim!.memory?.trim()) out.resources.limits.memory = lim!.memory;
    }
  }
  const lp = probeToK8s(c.livenessProbe); if (lp) out.livenessProbe = lp;
  const rp = probeToK8s(c.readinessProbe); if (rp) out.readinessProbe = rp;
  const sp = probeToK8s(c.startupProbe); if (sp) out.startupProbe = sp;
  if (c.lifecycle) {
    const lc: JsonData = {};
    const ps = handlerToK8s(c.lifecycle.postStart); if (ps) lc.postStart = ps;
    const pst = handlerToK8s(c.lifecycle.preStop); if (pst) lc.preStop = pst;
    if (Object.keys(lc).length > 0) out.lifecycle = lc;
  }
  if (c.securityContext) {
    const s = c.securityContext;
    const sc: JsonData = {};
    if (s.runAsUser !== '' && s.runAsUser != null) sc.runAsUser = Number(s.runAsUser);
    if (s.runAsGroup !== '' && s.runAsGroup != null) sc.runAsGroup = Number(s.runAsGroup);
    if (s.runAsNonRoot != null) sc.runAsNonRoot = s.runAsNonRoot;
    if (s.privileged != null) sc.privileged = s.privileged;
    if (s.readOnlyRootFilesystem != null) sc.readOnlyRootFilesystem = s.readOnlyRootFilesystem;
    if (s.allowPrivilegeEscalation != null) sc.allowPrivilegeEscalation = s.allowPrivilegeEscalation;
    const capAdd = (s.capabilitiesAdd || []).filter(Boolean);
    const capDrop = (s.capabilitiesDrop || []).filter(Boolean);
    if (capAdd.length || capDrop.length) {
      sc.capabilities = {};
      if (capAdd.length) sc.capabilities.add = capAdd;
      if (capDrop.length) sc.capabilities.drop = capDrop;
    }
    if (Object.keys(sc).length > 0) out.securityContext = sc;
  }
  if (c.volumeMounts.length > 0) {
    out.volumeMounts = c.volumeMounts.filter(m => m.name.trim() && m.mountPath.trim()).map(m => {
      const o: JsonData = { name: m.name, mountPath: m.mountPath };
      if (m.subPath) o.subPath = m.subPath;
      if (m.readOnly) o.readOnly = true;
      return o;
    });
  }
  return out;
}

// String array helper (command/args editing) // Logan.Li
export function arrToText(arr: string[]): string { return arr.join('\n'); }
export function textToArr(text: string): string[] { return text.split('\n').map(s => s.trim()).filter(Boolean); }