import type { IncomingMessage, ServerResponse } from "node:http";
import type { TopLevelComponents } from "@buape/carbon";
import type { AgentMessage } from "@mariozechner/pi-agent-core";
import type { StreamFn } from "@mariozechner/pi-agent-core";
import type { Api, Model } from "@mariozechner/pi-ai";
import type { ModelRegistry } from "@mariozechner/pi-coding-agent";
import type { Command } from "commander";
import type {
  ApiKeyCredential,
  AuthProfileCredential,
  OAuthCredential,
} from "../agents/auth-profiles/types.js";
import type { ProviderCapabilities } from "../agents/provider-capabilities.js";
import type { AnyAgentTool } from "../agents/tools/common.js";
import type { ThinkLevel } from "../auto-reply/thinking.js";
import type { ReplyPayload } from "../auto-reply/types.js";
import type { ChannelDock } from "../channels/dock.js";
import type { ChannelId, ChannelPlugin } from "../channels/plugins/types.js";
import type { createVpsAwareOAuthHandlers } from "../commands/oauth-flow.js";
import type { OnboardOptions } from "../commands/onboard-types.js";
import type { OpenClawConfig } from "../config/config.js";
import type { ModelProviderConfig } from "../config/types.js";
import type { GatewayRequestHandler } from "../gateway/server-methods/types.js";
import type { InternalHookHandler } from "../hooks/internal-hooks.js";
import type { HookEntry } from "../hooks/types.js";
import type { RuntimeEnv } from "../runtime.js";
import type { WizardPrompter } from "../wizard/prompts.js";
import type { PluginRuntime } from "./runtime/types.js";

export type { PluginRuntime } from "./runtime/types.js";
export type { AnyAgentTool } from "../agents/tools/common.js";

export type PluginLogger = {
  debug?: (message: string) => void;
  info: (message: string) => void;
  warn: (message: string) => void;
  error: (message: string) => void;
};

export type PluginConfigUiHint = {
  label?: string;
  help?: string;
  tags?: string[];
  advanced?: boolean;
  sensitive?: boolean;
  placeholder?: string;
};

export type PluginKind = "memory" | "context-engine";

export type PluginConfigValidation =
  | { ok: true; value?: unknown }
  | { ok: false; errors: string[] };

export type OpenClawPluginConfigSchema = {
  safeParse?: (value: unknown) => {
    success: boolean;
    data?: unknown;
    error?: {
      issues?: Array<{ path: Array<string | number>; message: string }>;
    };
  };
  parse?: (value: unknown) => unknown;
  validate?: (value: unknown) => PluginConfigValidation;
  uiHints?: Record<string, PluginConfigUiHint>;
  jsonSchema?: Record<string, unknown>;
};

export type OpenClawPluginToolContext = {
  config?: OpenClawConfig;
  workspaceDir?: string;
  agentDir?: string;
  agentId?: string;
  sessionKey?: string;
  /** Ephemeral session UUID — regenerated on /new and /reset. Use for per-conversation isolation. */
  sessionId?: string;
  messageChannel?: string;
  agentAccountId?: string;
  /** Trusted sender id from inbound context (runtime-provided, not tool args). */
  requesterSenderId?: string;
  /** Whether the trusted sender is an owner. */
  senderIsOwner?: boolean;
  sandboxed?: boolean;
};

export type OpenClawPluginToolFactory = (
  ctx: OpenClawPluginToolContext,
) => AnyAgentTool | AnyAgentTool[] | null | undefined;

export type OpenClawPluginToolOptions = {
  name?: string;
  names?: string[];
  optional?: boolean;
};

export type OpenClawPluginHookOptions = {
  entry?: HookEntry;
  name?: string;
  description?: string;
  register?: boolean;
};

export type ProviderAuthKind = "oauth" | "api_key" | "token" | "device_code" | "custom";

export type ProviderAuthResult = {
  profiles: Array<{ profileId: string; credential: AuthProfileCredential }>;
  configPatch?: Partial<OpenClawConfig>;
  defaultModel?: string;
  notes?: string[];
};

export type ProviderAuthContext = {
  config: OpenClawConfig;
  agentDir?: string;
  workspaceDir?: string;
  prompter: WizardPrompter;
  runtime: RuntimeEnv;
  isRemote: boolean;
  openUrl: (url: string) => Promise<void>;
  oauth: {
    createVpsAwareHandlers: typeof createVpsAwareOAuthHandlers;
  };
};

export type ProviderNonInteractiveApiKeyResult = {
  key: string;
  source: "profile" | "env" | "flag";
  envVarName?: string;
};

export type ProviderResolveNonInteractiveApiKeyParams = {
  provider: string;
  flagValue?: string;
  flagName: `--${string}`;
  envVar: string;
  envVarName?: string;
  allowProfile?: boolean;
  required?: boolean;
};

export type ProviderNonInteractiveApiKeyCredentialParams = {
  provider: string;
  resolved: ProviderNonInteractiveApiKeyResult;
  email?: string;
  metadata?: Record<string, string>;
};

export type ProviderAuthMethodNonInteractiveContext = {
  authChoice: string;
  config: OpenClawConfig;
  baseConfig: OpenClawConfig;
  opts: OnboardOptions;
  runtime: RuntimeEnv;
  agentDir?: string;
  workspaceDir?: string;
  resolveApiKey: (
    params: ProviderResolveNonInteractiveApiKeyParams,
  ) => Promise<ProviderNonInteractiveApiKeyResult | null>;
  toApiKeyCredential: (
    params: ProviderNonInteractiveApiKeyCredentialParams,
  ) => ApiKeyCredential | null;
};

export type ProviderAuthMethod = {
  id: string;
  label: string;
  hint?: string;
  kind: ProviderAuthKind;
  run: (ctx: ProviderAuthContext) => Promise<ProviderAuthResult>;
  runNonInteractive?: (
    ctx: ProviderAuthMethodNonInteractiveContext,
  ) => Promise<OpenClawConfig | null>;
};

export type ProviderCatalogOrder = "simple" | "profile" | "paired" | "late";

export type ProviderCatalogContext = {
  config: OpenClawConfig;
  agentDir?: string;
  workspaceDir?: string;
  env: NodeJS.ProcessEnv;
  resolveProviderApiKey: (providerId?: string) => {
    apiKey: string | undefined;
    discoveryApiKey?: string;
  };
};

export type ProviderCatalogResult =
  | { provider: ModelProviderConfig }
  | { providers: Record<string, ModelProviderConfig> }
  | null
  | undefined;

export type ProviderPluginCatalog = {
  order?: ProviderCatalogOrder;
  run: (ctx: ProviderCatalogContext) => Promise<ProviderCatalogResult>;
};

/**
 * Fully-resolved runtime model shape used by the embedded runner.
 *
 * Catalog hooks publish config-time `models.providers` entries.
 * Runtime hooks below operate on the final `pi-ai` model object after
 * discovery/override merging, just before inference runs.
 */
export type ProviderRuntimeModel = Model<Api>;

export type ProviderRuntimeProviderConfig = {
  baseUrl?: string;
  api?: ModelProviderConfig["api"];
  models?: ModelProviderConfig["models"];
  headers?: unknown;
};

/**
 * Sync hook for provider-owned model ids that are not present in the local
 * registry/catalog yet.
 *
 * Use this for pass-through providers or provider-specific forward-compat
 * behavior. The hook should be cheap and side-effect free; async refreshes
 * belong in `prepareDynamicModel`.
 */
export type ProviderResolveDynamicModelContext = {
  config?: OpenClawConfig;
  agentDir?: string;
  workspaceDir?: string;
  provider: string;
  modelId: string;
  modelRegistry: ModelRegistry;
  providerConfig?: ProviderRuntimeProviderConfig;
};

/**
 * Optional async warm-up for dynamic model resolution.
 *
 * Called only from async model resolution paths, before retrying
 * `resolveDynamicModel`. This is the place to refresh caches or fetch provider
 * metadata over the network.
 */
export type ProviderPrepareDynamicModelContext = ProviderResolveDynamicModelContext;

/**
 * Last-chance rewrite hook for provider-owned transport normalization.
 *
 * Runs after OpenClaw resolves an explicit/discovered/dynamic model and before
 * the embedded runner uses it. Typical uses: swap API ids, fix base URLs, or
 * patch provider-specific compat bits.
 */
export type ProviderNormalizeResolvedModelContext = {
  config?: OpenClawConfig;
  agentDir?: string;
  workspaceDir?: string;
  provider: string;
  modelId: string;
  model: ProviderRuntimeModel;
};

/**
 * Runtime auth input for providers that need an extra exchange step before
 * inference. The incoming `apiKey` is the raw credential resolved from auth
 * profiles/env/config. The returned value should be the actual token/key to use
 * for the request.
 */
export type ProviderPrepareRuntimeAuthContext = {
  config?: OpenClawConfig;
  agentDir?: string;
  workspaceDir?: string;
  env: NodeJS.ProcessEnv;
  provider: string;
  modelId: string;
  model: ProviderRuntimeModel;
  apiKey: string;
  authMode: string;
  profileId?: string;
};

/**
 * Result of `prepareRuntimeAuth`.
 *
 * `apiKey` is required and becomes the runtime credential stored in auth
 * storage. `baseUrl` is optional and lets providers like GitHub Copilot swap to
 * an entitlement-specific endpoint at request time. `expiresAt` enables generic
 * background refresh in long-running turns.
 */
export type ProviderPreparedRuntimeAuth = {
  apiKey: string;
  baseUrl?: string;
  expiresAt?: number;
};

/**
 * Provider-owned extra-param normalization before OpenClaw builds its generic
 * stream option wrapper.
 *
 * Use this to set provider defaults or rewrite provider-specific config keys
 * into the merged `extraParams` object. Return the full next extraParams object.
 */
export type ProviderPrepareExtraParamsContext = {
  config?: OpenClawConfig;
  agentDir?: string;
  workspaceDir?: string;
  provider: string;
  modelId: string;
  extraParams?: Record<string, unknown>;
  thinkingLevel?: ThinkLevel;
};

/**
 * Provider-owned stream wrapper hook after OpenClaw applies its generic
 * transport-independent wrappers.
 *
 * Use this for provider-specific payload/header/model mutations that still run
 * through the normal `pi-ai` stream path.
 */
export type ProviderWrapStreamFnContext = ProviderPrepareExtraParamsContext & {
  streamFn?: StreamFn;
};

/**
 * Provider-owned prompt-cache eligibility.
 *
 * Return `true` or `false` to override OpenClaw's built-in provider cache TTL
 * detection for this provider. Return `undefined` to fall back to core rules.
 */
export type ProviderCacheTtlEligibilityContext = {
  provider: string;
  modelId: string;
};

/**
 * @deprecated Use ProviderCatalogOrder.
 */
export type ProviderDiscoveryOrder = ProviderCatalogOrder;

/**
 * @deprecated Use ProviderCatalogContext.
 */
export type ProviderDiscoveryContext = ProviderCatalogContext;

/**
 * @deprecated Use ProviderCatalogResult.
 */
export type ProviderDiscoveryResult = ProviderCatalogResult;

/**
 * @deprecated Use ProviderPluginCatalog.
 */
export type ProviderPluginDiscovery = ProviderPluginCatalog;

export type ProviderPluginWizardOnboarding = {
  choiceId?: string;
  choiceLabel?: string;
  choiceHint?: string;
  groupId?: string;
  groupLabel?: string;
  groupHint?: string;
  methodId?: string;
};

export type ProviderPluginWizardModelPicker = {
  label?: string;
  hint?: string;
  methodId?: string;
};

export type ProviderPluginWizard = {
  onboarding?: ProviderPluginWizardOnboarding;
  modelPicker?: ProviderPluginWizardModelPicker;
};

export type ProviderModelSelectedContext = {
  config: OpenClawConfig;
  model: string;
  prompter: WizardPrompter;
  agentDir?: string;
  workspaceDir?: string;
};

export type ProviderPlugin = {
  id: string;
  pluginId?: string;
  label: string;
  docsPath?: string;
  aliases?: string[];
  envVars?: string[];
  auth: ProviderAuthMethod[];
  /**
   * Preferred hook for plugin-defined provider catalogs.
   * Returns provider config/model definitions that merge into models.providers.
   */
  catalog?: ProviderPluginCatalog;
  /**
   * Legacy alias for catalog.
   * Kept for compatibility with existing provider plugins.
   */
  discovery?: ProviderPluginDiscovery;
  /**
   * Sync runtime fallback for model ids not present in the local catalog.
   *
   * Hook order:
   * 1. discovered/static model lookup
   * 2. plugin `resolveDynamicModel`
   * 3. core fallback heuristics
   * 4. generic provider-config fallback
   *
   * Keep this hook cheap and deterministic. If you need network I/O first, use
   * `prepareDynamicModel` to prime state for the async retry path.
   */
  resolveDynamicModel?: (
    ctx: ProviderResolveDynamicModelContext,
  ) => ProviderRuntimeModel | null | undefined;
  /**
   * Optional async prefetch for dynamic model resolution.
   *
   * OpenClaw calls this only from async model resolution paths. After it
   * completes, `resolveDynamicModel` is called again.
   */
  prepareDynamicModel?: (ctx: ProviderPrepareDynamicModelContext) => Promise<void>;
  /**
   * Provider-owned transport normalization.
   *
   * Use this to rewrite a resolved model without forking the generic runner:
   * swap API ids, update base URLs, or adjust compat flags for a provider's
   * transport quirks.
   */
  normalizeResolvedModel?: (
    ctx: ProviderNormalizeResolvedModelContext,
  ) => ProviderRuntimeModel | null | undefined;
  /**
   * Static provider capability overrides consumed by shared transcript/tooling
   * logic.
   *
   * Use this when the provider behaves like OpenAI/Anthropic, needs transcript
   * sanitization quirks, or requires provider-family hints.
   */
  capabilities?: Partial<ProviderCapabilities>;
  /**
   * Provider-owned extra-param normalization before generic stream option
   * wrapping.
   *
   * Typical uses: set provider-default `transport`, map provider-specific
   * config aliases, or inject extra request metadata sourced from
   * `agents.defaults.models.<provider>/<model>.params`.
   */
  prepareExtraParams?: (
    ctx: ProviderPrepareExtraParamsContext,
  ) => Record<string, unknown> | null | undefined;
  /**
   * Provider-owned stream wrapper applied after generic OpenClaw wrappers.
   *
   * Typical uses: provider attribution headers, request-body rewrites, or
   * provider-specific compat payload patches that do not justify a separate
   * transport implementation.
   */
  wrapStreamFn?: (ctx: ProviderWrapStreamFnContext) => StreamFn | null | undefined;
  /**
   * Runtime auth exchange hook.
   *
   * Called after OpenClaw resolves the raw configured credential but before the
   * runner stores it in runtime auth storage. This lets plugins exchange a
   * source credential (for example a GitHub token) into a short-lived runtime
   * token plus optional base URL override.
   */
  prepareRuntimeAuth?: (
    ctx: ProviderPrepareRuntimeAuthContext,
  ) => Promise<ProviderPreparedRuntimeAuth | null | undefined>;
  /**
   * Provider-owned cache TTL eligibility.
   *
   * Use this when a proxy provider supports Anthropic-style prompt caching for
   * only a subset of upstream models.
   */
  isCacheTtlEligible?: (ctx: ProviderCacheTtlEligibilityContext) => boolean | undefined;
  wizard?: ProviderPluginWizard;
  formatApiKey?: (cred: AuthProfileCredential) => string;
  refreshOAuth?: (cred: OAuthCredential) => Promise<OAuthCredential>;
  onModelSelected?: (ctx: ProviderModelSelectedContext) => Promise<void>;
};

export type OpenClawPluginGatewayMethod = {
  method: string;
  handler: GatewayRequestHandler;
};

// =============================================================================
// Plugin Commands
// =============================================================================

/**
 * Context passed to plugin command handlers.
 */
export type PluginCommandContext = {
  /** The sender's identifier (e.g., Telegram user ID) */
  senderId?: string;
  /** The channel/surface (e.g., "telegram", "discord") */
  channel: string;
  /** Provider channel id (e.g., "telegram") */
  channelId?: ChannelId;
  /** Whether the sender is on the allowlist */
  isAuthorizedSender: boolean;
  /** Raw command arguments after the command name */
  args?: string;
  /** The full normalized command body */
  commandBody: string;
  /** Current OpenClaw configuration */
  config: OpenClawConfig;
  /** Raw "From" value (channel-scoped id) */
  from?: string;
  /** Raw "To" value (channel-scoped id) */
  to?: string;
  /** Account id for multi-account channels */
  accountId?: string;
  /** Thread/topic id if available */
  messageThreadId?: number;
  requestConversationBinding: (
    params?: PluginConversationBindingRequestParams,
  ) => Promise<PluginConversationBindingRequestResult>;
  detachConversationBinding: () => Promise<{ removed: boolean }>;
  getCurrentConversationBinding: () => Promise<PluginConversationBinding | null>;
};

export type PluginConversationBindingRequestParams = {
  summary?: string;
  detachHint?: string;
};

export type PluginConversationBinding = {
  bindingId: string;
  pluginId: string;
  pluginName?: string;
  pluginRoot: string;
  channel: string;
  accountId: string;
  conversationId: string;
  parentConversationId?: string;
  threadId?: string | number;
  boundAt: number;
  summary?: string;
  detachHint?: string;
};

export type PluginConversationBindingRequestResult =
  | {
      status: "bound";
      binding: PluginConversationBinding;
    }
  | {
      status: "pending";
      approvalId: string;
      reply: ReplyPayload;
    }
  | {
      status: "error";
      message: string;
    };

/**
 * Result returned by a plugin command handler.
 */
export type PluginCommandResult = ReplyPayload;

/**
 * Handler function for plugin commands.
 */
export type PluginCommandHandler = (
  ctx: PluginCommandContext,
) => PluginCommandResult | Promise<PluginCommandResult>;

/**
 * Definition for a plugin-registered command.
 */
export type OpenClawPluginCommandDefinition = {
  /** Command name without leading slash (e.g., "tts") */
  name: string;
  /**
   * Optional native-command aliases for slash/menu surfaces.
   * `default` applies to all native providers unless a provider-specific
   * override exists (for example `{ default: "talkvoice", discord: "voice2" }`).
   */
  nativeNames?: Partial<Record<string, string>> & { default?: string };
  /** Description shown in /help and command menus */
  description: string;
  /** Whether this command accepts arguments */
  acceptsArgs?: boolean;
  /** Whether only authorized senders can use this command (default: true) */
  requireAuth?: boolean;
  /** The handler function */
  handler: PluginCommandHandler;
};

export type PluginInteractiveChannel = "telegram" | "discord";

export type PluginInteractiveButtons = Array<
  Array<{ text: string; callback_data: string; style?: "danger" | "success" | "primary" }>
>;

export type PluginInteractiveTelegramHandlerResult = {
  handled?: boolean;
} | void;

export type PluginInteractiveTelegramHandlerContext = {
  channel: "telegram";
  accountId: string;
  callbackId: string;
  conversationId: string;
  parentConversationId?: string;
  senderId?: string;
  senderUsername?: string;
  threadId?: number;
  isGroup: boolean;
  isForum: boolean;
  auth: {
    isAuthorizedSender: boolean;
  };
  callback: {
    data: string;
    namespace: string;
    payload: string;
    messageId: number;
    chatId: string;
    messageText?: string;
  };
  respond: {
    reply: (params: { text: string; buttons?: PluginInteractiveButtons }) => Promise<void>;
    editMessage: (params: { text: string; buttons?: PluginInteractiveButtons }) => Promise<void>;
    editButtons: (params: { buttons: PluginInteractiveButtons }) => Promise<void>;
    clearButtons: () => Promise<void>;
    deleteMessage: () => Promise<void>;
  };
  requestConversationBinding: (
    params?: PluginConversationBindingRequestParams,
  ) => Promise<PluginConversationBindingRequestResult>;
  detachConversationBinding: () => Promise<{ removed: boolean }>;
  getCurrentConversationBinding: () => Promise<PluginConversationBinding | null>;
};

export type PluginInteractiveDiscordHandlerResult = {
  handled?: boolean;
} | void;

export type PluginInteractiveDiscordHandlerContext = {
  channel: "discord";
  accountId: string;
  interactionId: string;
  conversationId: string;
  parentConversationId?: string;
  guildId?: string;
  senderId?: string;
  senderUsername?: string;
  auth: {
    isAuthorizedSender: boolean;
  };
  interaction: {
    kind: "button" | "select" | "modal";
    data: string;
    namespace: string;
    payload: string;
    messageId?: string;
    values?: string[];
    fields?: Array<{ id: string; name: string; values: string[] }>;
  };
  respond: {
    acknowledge: () => Promise<void>;
    reply: (params: { text: string; ephemeral?: boolean }) => Promise<void>;
    followUp: (params: { text: string; ephemeral?: boolean }) => Promise<void>;
    editMessage: (params: { text?: string; components?: TopLevelComponents[] }) => Promise<void>;
    clearComponents: (params?: { text?: string }) => Promise<void>;
  };
  requestConversationBinding: (
    params?: PluginConversationBindingRequestParams,
  ) => Promise<PluginConversationBindingRequestResult>;
  detachConversationBinding: () => Promise<{ removed: boolean }>;
  getCurrentConversationBinding: () => Promise<PluginConversationBinding | null>;
};

export type PluginInteractiveTelegramHandlerRegistration = {
  channel: "telegram";
  namespace: string;
  handler: (
    ctx: PluginInteractiveTelegramHandlerContext,
  ) => Promise<PluginInteractiveTelegramHandlerResult> | PluginInteractiveTelegramHandlerResult;
};

export type PluginInteractiveDiscordHandlerRegistration = {
  channel: "discord";
  namespace: string;
  handler: (
    ctx: PluginInteractiveDiscordHandlerContext,
  ) => Promise<PluginInteractiveDiscordHandlerResult> | PluginInteractiveDiscordHandlerResult;
};

export type PluginInteractiveHandlerRegistration =
  | PluginInteractiveTelegramHandlerRegistration
  | PluginInteractiveDiscordHandlerRegistration;

export type OpenClawPluginHttpRouteAuth = "gateway" | "plugin";
export type OpenClawPluginHttpRouteMatch = "exact" | "prefix";

export type OpenClawPluginHttpRouteHandler = (
  req: IncomingMessage,
  res: ServerResponse,
) => Promise<boolean | void> | boolean | void;

export type OpenClawPluginHttpRouteParams = {
  path: string;
  handler: OpenClawPluginHttpRouteHandler;
  auth: OpenClawPluginHttpRouteAuth;
  match?: OpenClawPluginHttpRouteMatch;
  replaceExisting?: boolean;
};

export type OpenClawPluginCliContext = {
  program: Command;
  config: OpenClawConfig;
  workspaceDir?: string;
  logger: PluginLogger;
};

export type OpenClawPluginCliRegistrar = (ctx: OpenClawPluginCliContext) => void | Promise<void>;

export type OpenClawPluginServiceContext = {
  config: OpenClawConfig;
  workspaceDir?: string;
  stateDir: string;
  logger: PluginLogger;
};

export type OpenClawPluginService = {
  id: string;
  start: (ctx: OpenClawPluginServiceContext) => void | Promise<void>;
  stop?: (ctx: OpenClawPluginServiceContext) => void | Promise<void>;
};

export type OpenClawPluginChannelRegistration = {
  plugin: ChannelPlugin;
  dock?: ChannelDock;
};

export type OpenClawPluginDefinition = {
  id?: string;
  name?: string;
  description?: string;
  version?: string;
  kind?: PluginKind;
  configSchema?: OpenClawPluginConfigSchema;
  register?: (api: OpenClawPluginApi) => void | Promise<void>;
  activate?: (api: OpenClawPluginApi) => void | Promise<void>;
};

export type OpenClawPluginModule =
  | OpenClawPluginDefinition
  | ((api: OpenClawPluginApi) => void | Promise<void>);

export type OpenClawPluginApi = {
  id: string;
  name: string;
  version?: string;
  description?: string;
  source: string;
  rootDir?: string;
  config: OpenClawConfig;
  pluginConfig?: Record<string, unknown>;
  runtime: PluginRuntime;
  logger: PluginLogger;
  registerTool: (
    tool: AnyAgentTool | OpenClawPluginToolFactory,
    opts?: OpenClawPluginToolOptions,
  ) => void;
  registerHook: (
    events: string | string[],
    handler: InternalHookHandler,
    opts?: OpenClawPluginHookOptions,
  ) => void;
  registerHttpRoute: (params: OpenClawPluginHttpRouteParams) => void;
  registerChannel: (registration: OpenClawPluginChannelRegistration | ChannelPlugin) => void;
  registerGatewayMethod: (method: string, handler: GatewayRequestHandler) => void;
  registerCli: (registrar: OpenClawPluginCliRegistrar, opts?: { commands?: string[] }) => void;
  registerService: (service: OpenClawPluginService) => void;
  registerProvider: (provider: ProviderPlugin) => void;
  registerInteractiveHandler: (registration: PluginInteractiveHandlerRegistration) => void;
  /**
   * Register a custom command that bypasses the LLM agent.
   * Plugin commands are processed before built-in commands and before agent invocation.
   * Use this for simple state-toggling or status commands that don't need AI reasoning.
   */
  registerCommand: (command: OpenClawPluginCommandDefinition) => void;
  /** Register a context engine implementation (exclusive slot — only one active at a time). */
  registerContextEngine: (
    id: string,
    factory: import("../context-engine/registry.js").ContextEngineFactory,
  ) => void;
  resolvePath: (input: string) => string;
  /** Register a lifecycle hook handler */
  on: <K extends PluginHookName>(
    hookName: K,
    handler: PluginHookHandlerMap[K],
    opts?: { priority?: number },
  ) => void;
};

export type PluginOrigin = "bundled" | "global" | "workspace" | "config";

export type PluginDiagnostic = {
  level: "warn" | "error";
  message: string;
  pluginId?: string;
  source?: string;
};

// ============================================================================
// Plugin Hooks
// ============================================================================

export type PluginHookName =
  | "before_model_resolve"
  | "before_prompt_build"
  | "before_agent_start"
  | "llm_input"
  | "llm_output"
  | "agent_end"
  | "before_compaction"
  | "after_compaction"
  | "before_reset"
  | "inbound_claim"
  | "message_received"
  | "message_sending"
  | "message_sent"
  | "before_tool_call"
  | "after_tool_call"
  | "tool_result_persist"
  | "before_message_write"
  | "session_start"
  | "session_end"
  | "subagent_spawning"
  | "subagent_delivery_target"
  | "subagent_spawned"
  | "subagent_ended"
  | "gateway_start"
  | "gateway_stop";

export const PLUGIN_HOOK_NAMES = [
  "before_model_resolve",
  "before_prompt_build",
  "before_agent_start",
  "llm_input",
  "llm_output",
  "agent_end",
  "before_compaction",
  "after_compaction",
  "before_reset",
  "inbound_claim",
  "message_received",
  "message_sending",
  "message_sent",
  "before_tool_call",
  "after_tool_call",
  "tool_result_persist",
  "before_message_write",
  "session_start",
  "session_end",
  "subagent_spawning",
  "subagent_delivery_target",
  "subagent_spawned",
  "subagent_ended",
  "gateway_start",
  "gateway_stop",
] as const satisfies readonly PluginHookName[];

type MissingPluginHookNames = Exclude<PluginHookName, (typeof PLUGIN_HOOK_NAMES)[number]>;
type AssertAllPluginHookNamesListed = MissingPluginHookNames extends never ? true : never;
const assertAllPluginHookNamesListed: AssertAllPluginHookNamesListed = true;
void assertAllPluginHookNamesListed;

const pluginHookNameSet = new Set<PluginHookName>(PLUGIN_HOOK_NAMES);

export const isPluginHookName = (hookName: unknown): hookName is PluginHookName =>
  typeof hookName === "string" && pluginHookNameSet.has(hookName as PluginHookName);

export const PROMPT_INJECTION_HOOK_NAMES = [
  "before_prompt_build",
  "before_agent_start",
] as const satisfies readonly PluginHookName[];

export type PromptInjectionHookName = (typeof PROMPT_INJECTION_HOOK_NAMES)[number];

const promptInjectionHookNameSet = new Set<PluginHookName>(PROMPT_INJECTION_HOOK_NAMES);

export const isPromptInjectionHookName = (hookName: PluginHookName): boolean =>
  promptInjectionHookNameSet.has(hookName);

// Agent context shared across agent hooks
export type PluginHookAgentContext = {
  agentId?: string;
  sessionKey?: string;
  sessionId?: string;
  workspaceDir?: string;
  messageProvider?: string;
  /** What initiated this agent run: "user", "heartbeat", "cron", or "memory". */
  trigger?: string;
  /** Channel identifier (e.g. "telegram", "discord", "whatsapp"). */
  channelId?: string;
};

// before_model_resolve hook
export type PluginHookBeforeModelResolveEvent = {
  /** User prompt for this run. No session messages are available yet in this phase. */
  prompt: string;
};

export type PluginHookBeforeModelResolveResult = {
  /** Override the model for this agent run. E.g. "llama3.3:8b" */
  modelOverride?: string;
  /** Override the provider for this agent run. E.g. "ollama" */
  providerOverride?: string;
};

// before_prompt_build hook
export type PluginHookBeforePromptBuildEvent = {
  prompt: string;
  /** Session messages prepared for this run. */
  messages: unknown[];
};

export type PluginHookBeforePromptBuildResult = {
  systemPrompt?: string;
  prependContext?: string;
  /**
   * Prepended to the agent system prompt so providers can cache it (e.g. prompt caching).
   * Use for static plugin guidance instead of prependContext to avoid per-turn token cost.
   */
  prependSystemContext?: string;
  /**
   * Appended to the agent system prompt so providers can cache it (e.g. prompt caching).
   * Use for static plugin guidance instead of prependContext to avoid per-turn token cost.
   */
  appendSystemContext?: string;
};

export const PLUGIN_PROMPT_MUTATION_RESULT_FIELDS = [
  "systemPrompt",
  "prependContext",
  "prependSystemContext",
  "appendSystemContext",
] as const satisfies readonly (keyof PluginHookBeforePromptBuildResult)[];

type MissingPluginPromptMutationResultFields = Exclude<
  keyof PluginHookBeforePromptBuildResult,
  (typeof PLUGIN_PROMPT_MUTATION_RESULT_FIELDS)[number]
>;
type AssertAllPluginPromptMutationResultFieldsListed =
  MissingPluginPromptMutationResultFields extends never ? true : never;
const assertAllPluginPromptMutationResultFieldsListed: AssertAllPluginPromptMutationResultFieldsListed = true;
void assertAllPluginPromptMutationResultFieldsListed;

// before_agent_start hook (legacy compatibility: combines both phases)
export type PluginHookBeforeAgentStartEvent = {
  prompt: string;
  /** Optional because legacy hook can run in pre-session phase. */
  messages?: unknown[];
};

export type PluginHookBeforeAgentStartResult = PluginHookBeforePromptBuildResult &
  PluginHookBeforeModelResolveResult;

export type PluginHookBeforeAgentStartOverrideResult = Omit<
  PluginHookBeforeAgentStartResult,
  keyof PluginHookBeforePromptBuildResult
>;

export const stripPromptMutationFieldsFromLegacyHookResult = (
  result: PluginHookBeforeAgentStartResult | void,
): PluginHookBeforeAgentStartOverrideResult | void => {
  if (!result || typeof result !== "object") {
    return result;
  }
  const remaining: Partial<PluginHookBeforeAgentStartResult> = { ...result };
  for (const field of PLUGIN_PROMPT_MUTATION_RESULT_FIELDS) {
    delete remaining[field];
  }
  return Object.keys(remaining).length > 0
    ? (remaining as PluginHookBeforeAgentStartOverrideResult)
    : undefined;
};

// llm_input hook
export type PluginHookLlmInputEvent = {
  runId: string;
  sessionId: string;
  provider: string;
  model: string;
  systemPrompt?: string;
  prompt: string;
  historyMessages: unknown[];
  imagesCount: number;
};

// llm_output hook
export type PluginHookLlmOutputEvent = {
  runId: string;
  sessionId: string;
  provider: string;
  model: string;
  assistantTexts: string[];
  lastAssistant?: unknown;
  usage?: {
    input?: number;
    output?: number;
    cacheRead?: number;
    cacheWrite?: number;
    total?: number;
  };
};

// agent_end hook
export type PluginHookAgentEndEvent = {
  messages: unknown[];
  success: boolean;
  error?: string;
  durationMs?: number;
};

// Compaction hooks
export type PluginHookBeforeCompactionEvent = {
  /** Total messages in the session before any truncation or compaction */
  messageCount: number;
  /** Messages being fed to the compaction LLM (after history-limit truncation) */
  compactingCount?: number;
  tokenCount?: number;
  messages?: unknown[];
  /** Path to the session JSONL transcript. All messages are already on disk
   *  before compaction starts, so plugins can read this file asynchronously
   *  and process in parallel with the compaction LLM call. */
  sessionFile?: string;
};

// before_reset hook — fired when /new or /reset clears a session
export type PluginHookBeforeResetEvent = {
  sessionFile?: string;
  messages?: unknown[];
  reason?: string;
};

export type PluginHookAfterCompactionEvent = {
  messageCount: number;
  tokenCount?: number;
  compactedCount: number;
  /** Path to the session JSONL transcript. All pre-compaction messages are
   *  preserved on disk, so plugins can read and process them asynchronously
   *  without blocking the compaction pipeline. */
  sessionFile?: string;
};

// Message context
export type PluginHookMessageContext = {
  channelId: string;
  accountId?: string;
  conversationId?: string;
};

export type PluginHookInboundClaimContext = PluginHookMessageContext & {
  parentConversationId?: string;
  senderId?: string;
  messageId?: string;
};

export type PluginHookInboundClaimEvent = {
  content: string;
  body?: string;
  bodyForAgent?: string;
  transcript?: string;
  timestamp?: number;
  channel: string;
  accountId?: string;
  conversationId?: string;
  parentConversationId?: string;
  senderId?: string;
  senderName?: string;
  senderUsername?: string;
  threadId?: string | number;
  messageId?: string;
  isGroup: boolean;
  commandAuthorized?: boolean;
  wasMentioned?: boolean;
  metadata?: Record<string, unknown>;
};

export type PluginHookInboundClaimResult = {
  handled: boolean;
};

// message_received hook
export type PluginHookMessageReceivedEvent = {
  from: string;
  content: string;
  timestamp?: number;
  metadata?: Record<string, unknown>;
};

// message_sending hook
export type PluginHookMessageSendingEvent = {
  to: string;
  content: string;
  metadata?: Record<string, unknown>;
};

export type PluginHookMessageSendingResult = {
  content?: string;
  cancel?: boolean;
};

// message_sent hook
export type PluginHookMessageSentEvent = {
  to: string;
  content: string;
  success: boolean;
  error?: string;
};

// Tool context
export type PluginHookToolContext = {
  agentId?: string;
  sessionKey?: string;
  /** Ephemeral session UUID — regenerated on /new and /reset. */
  sessionId?: string;
  /** Stable run identifier for this agent invocation. */
  runId?: string;
  toolName: string;
  /** Provider-specific tool call ID when available. */
  toolCallId?: string;
};

// before_tool_call hook
export type PluginHookBeforeToolCallEvent = {
  toolName: string;
  params: Record<string, unknown>;
  /** Stable run identifier for this agent invocation. */
  runId?: string;
  /** Provider-specific tool call ID when available. */
  toolCallId?: string;
};

export type PluginHookBeforeToolCallResult = {
  params?: Record<string, unknown>;
  block?: boolean;
  blockReason?: string;
};

// after_tool_call hook
export type PluginHookAfterToolCallEvent = {
  toolName: string;
  params: Record<string, unknown>;
  /** Stable run identifier for this agent invocation. */
  runId?: string;
  /** Provider-specific tool call ID when available. */
  toolCallId?: string;
  result?: unknown;
  error?: string;
  durationMs?: number;
};

// tool_result_persist hook
export type PluginHookToolResultPersistContext = {
  agentId?: string;
  sessionKey?: string;
  toolName?: string;
  toolCallId?: string;
};

export type PluginHookToolResultPersistEvent = {
  toolName?: string;
  toolCallId?: string;
  /**
   * The toolResult message about to be written to the session transcript.
   * Handlers may return a modified message (e.g. drop non-essential fields).
   */
  message: AgentMessage;
  /** True when the tool result was synthesized by a guard/repair step. */
  isSynthetic?: boolean;
};

export type PluginHookToolResultPersistResult = {
  message?: AgentMessage;
};

// before_message_write hook
export type PluginHookBeforeMessageWriteEvent = {
  message: AgentMessage;
  sessionKey?: string;
  agentId?: string;
};

export type PluginHookBeforeMessageWriteResult = {
  block?: boolean; // If true, message is NOT written to JSONL
  message?: AgentMessage; // Optional: modified message to write instead
};

// Session context
export type PluginHookSessionContext = {
  agentId?: string;
  sessionId: string;
  sessionKey?: string;
};

// session_start hook
export type PluginHookSessionStartEvent = {
  sessionId: string;
  sessionKey?: string;
  resumedFrom?: string;
};

// session_end hook
export type PluginHookSessionEndEvent = {
  sessionId: string;
  sessionKey?: string;
  messageCount: number;
  durationMs?: number;
};

// Subagent context
export type PluginHookSubagentContext = {
  runId?: string;
  childSessionKey?: string;
  requesterSessionKey?: string;
};

export type PluginHookSubagentTargetKind = "subagent" | "acp";

type PluginHookSubagentSpawnBase = {
  childSessionKey: string;
  agentId: string;
  label?: string;
  mode: "run" | "session";
  requester?: {
    channel?: string;
    accountId?: string;
    to?: string;
    threadId?: string | number;
  };
  threadRequested: boolean;
};

// subagent_spawning hook
export type PluginHookSubagentSpawningEvent = PluginHookSubagentSpawnBase;

export type PluginHookSubagentSpawningResult =
  | {
      status: "ok";
      threadBindingReady?: boolean;
    }
  | {
      status: "error";
      error: string;
    };

// subagent_delivery_target hook
export type PluginHookSubagentDeliveryTargetEvent = {
  childSessionKey: string;
  requesterSessionKey: string;
  requesterOrigin?: {
    channel?: string;
    accountId?: string;
    to?: string;
    threadId?: string | number;
  };
  childRunId?: string;
  spawnMode?: "run" | "session";
  expectsCompletionMessage: boolean;
};

export type PluginHookSubagentDeliveryTargetResult = {
  origin?: {
    channel?: string;
    accountId?: string;
    to?: string;
    threadId?: string | number;
  };
};

// subagent_spawned hook
export type PluginHookSubagentSpawnedEvent = PluginHookSubagentSpawnBase & {
  runId: string;
};

// subagent_ended hook
export type PluginHookSubagentEndedEvent = {
  targetSessionKey: string;
  targetKind: PluginHookSubagentTargetKind;
  reason: string;
  sendFarewell?: boolean;
  accountId?: string;
  runId?: string;
  endedAt?: number;
  outcome?: "ok" | "error" | "timeout" | "killed" | "reset" | "deleted";
  error?: string;
};

// Gateway context
export type PluginHookGatewayContext = {
  port?: number;
};

// gateway_start hook
export type PluginHookGatewayStartEvent = {
  port: number;
};

// gateway_stop hook
export type PluginHookGatewayStopEvent = {
  reason?: string;
};

// Hook handler types mapped by hook name
export type PluginHookHandlerMap = {
  before_model_resolve: (
    event: PluginHookBeforeModelResolveEvent,
    ctx: PluginHookAgentContext,
  ) =>
    | Promise<PluginHookBeforeModelResolveResult | void>
    | PluginHookBeforeModelResolveResult
    | void;
  before_prompt_build: (
    event: PluginHookBeforePromptBuildEvent,
    ctx: PluginHookAgentContext,
  ) => Promise<PluginHookBeforePromptBuildResult | void> | PluginHookBeforePromptBuildResult | void;
  before_agent_start: (
    event: PluginHookBeforeAgentStartEvent,
    ctx: PluginHookAgentContext,
  ) => Promise<PluginHookBeforeAgentStartResult | void> | PluginHookBeforeAgentStartResult | void;
  llm_input: (event: PluginHookLlmInputEvent, ctx: PluginHookAgentContext) => Promise<void> | void;
  llm_output: (
    event: PluginHookLlmOutputEvent,
    ctx: PluginHookAgentContext,
  ) => Promise<void> | void;
  agent_end: (event: PluginHookAgentEndEvent, ctx: PluginHookAgentContext) => Promise<void> | void;
  before_compaction: (
    event: PluginHookBeforeCompactionEvent,
    ctx: PluginHookAgentContext,
  ) => Promise<void> | void;
  after_compaction: (
    event: PluginHookAfterCompactionEvent,
    ctx: PluginHookAgentContext,
  ) => Promise<void> | void;
  before_reset: (
    event: PluginHookBeforeResetEvent,
    ctx: PluginHookAgentContext,
  ) => Promise<void> | void;
  inbound_claim: (
    event: PluginHookInboundClaimEvent,
    ctx: PluginHookInboundClaimContext,
  ) => Promise<PluginHookInboundClaimResult | void> | PluginHookInboundClaimResult | void;
  message_received: (
    event: PluginHookMessageReceivedEvent,
    ctx: PluginHookMessageContext,
  ) => Promise<void> | void;
  message_sending: (
    event: PluginHookMessageSendingEvent,
    ctx: PluginHookMessageContext,
  ) => Promise<PluginHookMessageSendingResult | void> | PluginHookMessageSendingResult | void;
  message_sent: (
    event: PluginHookMessageSentEvent,
    ctx: PluginHookMessageContext,
  ) => Promise<void> | void;
  before_tool_call: (
    event: PluginHookBeforeToolCallEvent,
    ctx: PluginHookToolContext,
  ) => Promise<PluginHookBeforeToolCallResult | void> | PluginHookBeforeToolCallResult | void;
  after_tool_call: (
    event: PluginHookAfterToolCallEvent,
    ctx: PluginHookToolContext,
  ) => Promise<void> | void;
  tool_result_persist: (
    event: PluginHookToolResultPersistEvent,
    ctx: PluginHookToolResultPersistContext,
  ) => PluginHookToolResultPersistResult | void;
  before_message_write: (
    event: PluginHookBeforeMessageWriteEvent,
    ctx: { agentId?: string; sessionKey?: string },
  ) => PluginHookBeforeMessageWriteResult | void;
  session_start: (
    event: PluginHookSessionStartEvent,
    ctx: PluginHookSessionContext,
  ) => Promise<void> | void;
  session_end: (
    event: PluginHookSessionEndEvent,
    ctx: PluginHookSessionContext,
  ) => Promise<void> | void;
  subagent_spawning: (
    event: PluginHookSubagentSpawningEvent,
    ctx: PluginHookSubagentContext,
  ) => Promise<PluginHookSubagentSpawningResult | void> | PluginHookSubagentSpawningResult | void;
  subagent_delivery_target: (
    event: PluginHookSubagentDeliveryTargetEvent,
    ctx: PluginHookSubagentContext,
  ) =>
    | Promise<PluginHookSubagentDeliveryTargetResult | void>
    | PluginHookSubagentDeliveryTargetResult
    | void;
  subagent_spawned: (
    event: PluginHookSubagentSpawnedEvent,
    ctx: PluginHookSubagentContext,
  ) => Promise<void> | void;
  subagent_ended: (
    event: PluginHookSubagentEndedEvent,
    ctx: PluginHookSubagentContext,
  ) => Promise<void> | void;
  gateway_start: (
    event: PluginHookGatewayStartEvent,
    ctx: PluginHookGatewayContext,
  ) => Promise<void> | void;
  gateway_stop: (
    event: PluginHookGatewayStopEvent,
    ctx: PluginHookGatewayContext,
  ) => Promise<void> | void;
};

export type PluginHookRegistration<K extends PluginHookName = PluginHookName> = {
  pluginId: string;
  hookName: K;
  handler: PluginHookHandlerMap[K];
  priority?: number;
  source: string;
};