import path from 'node:path';
import { fileURLToPath } from 'node:url';

import type { AgentToolResult } from '@mariozechner/pi-agent-core';
import { resolveSessionAgentId } from '../../agents/agent-scope.js';
import {
  readNumberParam,
  readStringArrayParam,
  readStringParam,
} from '../../agents/tools/common.js';
import { parseReplyDirectives } from '../../auto-reply/reply/reply-directives.js';
import { dispatchChannelMessageAction } from '../../channels/plugins/message-actions.js';
import type {
  ChannelId,
  ChannelMessageActionName,
  ChannelThreadingToolContext,
} from '../../channels/plugins/types.js';
import type { ClawdbotConfig } from '../../config/config.js';
import { extensionForMime } from '../../media/mime.js';
import { parseSlackTarget } from '../../slack/targets.js';
import {
  isDeliverableMessageChannel,
  normalizeMessageChannel,
  type GatewayClientMode,
  type GatewayClientName,
} from '../../utils/message-channel.js';
import { loadWebMedia } from '../../web/media.js';
import {
  listConfiguredMessageChannels,
  resolveMessageChannelSelection,
} from './channel-selection.js';
import { applyTargetToParams } from './channel-target.js';
import type { OutboundSendDeps } from './deliver.js';
import {
  actionHasTarget,
  actionRequiresTarget,
} from './message-action-spec.js';
import type { MessagePollResult, MessageSendResult } from './message.js';
import {
  applyCrossContextDecoration,
  buildCrossContextDecoration,
  enforceCrossContextPolicy,
  shouldApplyCrossContextMarker,
  type CrossContextDecoration,
} from './outbound-policy.js';
import {
  executePollAction,
  executeSendAction,
} from './outbound-send-service.js';
import {
  ensureOutboundSessionEntry,
  resolveOutboundSessionRoute,
} from './outbound-session.js';
import {
  resolveChannelTarget,
  type ResolvedMessagingTarget,
} from './target-resolver.js';

export type MessageActionRunnerGateway = {
  url?: string;
  token?: string;
  timeoutMs?: number;
  clientName: GatewayClientName;
  clientDisplayName?: string;
  mode: GatewayClientMode;
};

export type RunMessageActionParams = {
  cfg: ClawdbotConfig;
  action: ChannelMessageActionName;
  params: Record<string, unknown>;
  defaultAccountId?: string;
  toolContext?: ChannelThreadingToolContext;
  gateway?: MessageActionRunnerGateway;
  deps?: OutboundSendDeps;
  sessionKey?: string;
  agentId?: string;
  dryRun?: boolean;
  abortSignal?: AbortSignal;
};

export type MessageActionRunResult =
  | {
      kind: 'send';
      channel: ChannelId;
      action: 'send';
      to: string;
      handledBy: 'plugin' | 'core';
      payload: unknown;
      toolResult?: AgentToolResult<unknown>;
      sendResult?: MessageSendResult;
      dryRun: boolean;
    }
  | {
      kind: 'broadcast';
      channel: ChannelId;
      action: 'broadcast';
      handledBy: 'core' | 'dry-run';
      payload: {
        results: Array<{
          channel: ChannelId;
          to: string;
          ok: boolean;
          error?: string;
          result?: MessageSendResult;
        }>;
      };
      dryRun: boolean;
    }
  | {
      kind: 'poll';
      channel: ChannelId;
      action: 'poll';
      to: string;
      handledBy: 'plugin' | 'core';
      payload: unknown;
      toolResult?: AgentToolResult<unknown>;
      pollResult?: MessagePollResult;
      dryRun: boolean;
    }
  | {
      kind: 'action';
      channel: ChannelId;
      action: Exclude<ChannelMessageActionName, 'send' | 'poll'>;
      handledBy: 'plugin' | 'dry-run';
      payload: unknown;
      toolResult?: AgentToolResult<unknown>;
      dryRun: boolean;
    };

export function getToolResult(
  result: MessageActionRunResult
): AgentToolResult<unknown> | undefined {
  return 'toolResult' in result ? result.toolResult : undefined;
}

function extractToolPayload(result: AgentToolResult<unknown>): unknown {
  if (result.details !== undefined) return result.details;
  const textBlock = Array.isArray(result.content)
    ? result.content.find(
        (block) =>
          block &&
          typeof block === 'object' &&
          (block as { type?: unknown }).type === 'text' &&
          typeof (block as { text?: unknown }).text === 'string'
      )
    : undefined;
  const text = (textBlock as { text?: string } | undefined)?.text;
  if (text) {
    try {
      return JSON.parse(text);
    } catch {
      return text;
    }
  }
  return result.content ?? result;
}

function applyCrossContextMessageDecoration({
  params,
  message,
  decoration,
  preferEmbeds,
}: {
  params: Record<string, unknown>;
  message: string;
  decoration: CrossContextDecoration;
  preferEmbeds: boolean;
}): string {
  const applied = applyCrossContextDecoration({
    message,
    decoration,
    preferEmbeds,
  });
  params.message = applied.message;
  if (applied.embeds?.length) {
    params.embeds = applied.embeds;
  }
  return applied.message;
}

async function maybeApplyCrossContextMarker(params: {
  cfg: ClawdbotConfig;
  channel: ChannelId;
  action: ChannelMessageActionName;
  target: string;
  toolContext?: ChannelThreadingToolContext;
  accountId?: string | null;
  args: Record<string, unknown>;
  message: string;
  preferEmbeds: boolean;
}): Promise<string> {
  if (!shouldApplyCrossContextMarker(params.action) || !params.toolContext) {
    return params.message;
  }
  const decoration = await buildCrossContextDecoration({
    cfg: params.cfg,
    channel: params.channel,
    target: params.target,
    toolContext: params.toolContext,
    accountId: params.accountId ?? undefined,
  });
  if (!decoration) return params.message;
  return applyCrossContextMessageDecoration({
    params: params.args,
    message: params.message,
    decoration,
    preferEmbeds: params.preferEmbeds,
  });
}

function readBooleanParam(
  params: Record<string, unknown>,
  key: string
): boolean | undefined {
  const raw = params[key];
  if (typeof raw === 'boolean') return raw;
  if (typeof raw === 'string') {
    const trimmed = raw.trim().toLowerCase();
    if (trimmed === 'true') return true;
    if (trimmed === 'false') return false;
  }
  return undefined;
}

function resolveSlackAutoThreadId(params: {
  to: string;
  toolContext?: ChannelThreadingToolContext;
}): string | undefined {
  const context = params.toolContext;
  if (!context?.currentThreadTs || !context.currentChannelId) return undefined;
  // Only mirror auto-threading when Slack would reply in the active thread for this channel.
  if (context.replyToMode !== 'all' && context.replyToMode !== 'first')
    return undefined;
  const parsedTarget = parseSlackTarget(params.to, { defaultKind: 'channel' });
  if (!parsedTarget || parsedTarget.kind !== 'channel') return undefined;
  if (parsedTarget.id.toLowerCase() !== context.currentChannelId.toLowerCase())
    return undefined;
  if (context.replyToMode === 'first' && context.hasRepliedRef?.value)
    return undefined;
  return context.currentThreadTs;
}

function resolveAttachmentMaxBytes(params: {
  cfg: ClawdbotConfig;
  channel: ChannelId;
  accountId?: string | null;
}): number | undefined {
  const fallback = params.cfg.agents?.defaults?.mediaMaxMb;
  if (params.channel !== 'bluebubbles') {
    return typeof fallback === 'number' ? fallback * 1024 * 1024 : undefined;
  }
  const accountId =
    typeof params.accountId === 'string' ? params.accountId.trim() : '';
  const channelCfg = params.cfg.channels?.bluebubbles;
  const channelObj =
    channelCfg && typeof channelCfg === 'object'
      ? (channelCfg as Record<string, unknown>)
      : undefined;
  const channelMediaMax =
    typeof channelObj?.mediaMaxMb === 'number'
      ? channelObj.mediaMaxMb
      : undefined;
  const accountsObj =
    channelObj?.accounts && typeof channelObj.accounts === 'object'
      ? (channelObj.accounts as Record<string, unknown>)
      : undefined;
  const accountCfg =
    accountId && accountsObj ? accountsObj[accountId] : undefined;
  const accountMediaMax =
    accountCfg && typeof accountCfg === 'object'
      ? (accountCfg as Record<string, unknown>).mediaMaxMb
      : undefined;
  const limitMb =
    (typeof accountMediaMax === 'number' ? accountMediaMax : undefined) ??
    channelMediaMax ??
    params.cfg.agents?.defaults?.mediaMaxMb;
  return typeof limitMb === 'number' ? limitMb * 1024 * 1024 : undefined;
}

function inferAttachmentFilename(params: {
  mediaHint?: string;
  contentType?: string;
}): string | undefined {
  const mediaHint = params.mediaHint?.trim();
  if (mediaHint) {
    try {
      if (mediaHint.startsWith('file://')) {
        const filePath = fileURLToPath(mediaHint);
        const base = path.basename(filePath);
        if (base) return base;
      } else if (/^https?:\/\//i.test(mediaHint)) {
        const url = new URL(mediaHint);
        const base = path.basename(url.pathname);
        if (base) return base;
      } else {
        const base = path.basename(mediaHint);
        if (base) return base;
      }
    } catch {
      // fall through to content-type based default
    }
  }
  const ext = params.contentType
    ? extensionForMime(params.contentType)
    : undefined;
  return ext ? `attachment${ext}` : 'attachment';
}

function normalizeBase64Payload(params: {
  base64?: string;
  contentType?: string;
}): {
  base64?: string;
  contentType?: string;
} {
  if (!params.base64)
    return { base64: params.base64, contentType: params.contentType };
  const match = /^data:([^;]+);base64,(.*)$/i.exec(params.base64.trim());
  if (!match) return { base64: params.base64, contentType: params.contentType };
  const [, mime, payload] = match;
  return {
    base64: payload,
    contentType: params.contentType ?? mime,
  };
}

async function hydrateSetGroupIconParams(params: {
  cfg: ClawdbotConfig;
  channel: ChannelId;
  accountId?: string | null;
  args: Record<string, unknown>;
  action: ChannelMessageActionName;
  dryRun?: boolean;
}): Promise<void> {
  if (params.action !== 'setGroupIcon') return;

  const mediaHint = readStringParam(params.args, 'media', { trim: false });
  const fileHint =
    readStringParam(params.args, 'path', { trim: false }) ??
    readStringParam(params.args, 'filePath', { trim: false });
  const contentTypeParam =
    readStringParam(params.args, 'contentType') ??
    readStringParam(params.args, 'mimeType');

  const rawBuffer = readStringParam(params.args, 'buffer', { trim: false });
  const normalized = normalizeBase64Payload({
    base64: rawBuffer,
    contentType: contentTypeParam ?? undefined,
  });
  if (normalized.base64 !== rawBuffer && normalized.base64) {
    params.args.buffer = normalized.base64;
    if (normalized.contentType && !contentTypeParam) {
      params.args.contentType = normalized.contentType;
    }
  }

  const filename = readStringParam(params.args, 'filename');
  const mediaSource = mediaHint ?? fileHint;

  if (
    !params.dryRun &&
    !readStringParam(params.args, 'buffer', { trim: false }) &&
    mediaSource
  ) {
    const maxBytes = resolveAttachmentMaxBytes({
      cfg: params.cfg,
      channel: params.channel,
      accountId: params.accountId,
    });
    const media = await loadWebMedia(mediaSource, maxBytes);
    params.args.buffer = media.buffer.toString('base64');
    if (!contentTypeParam && media.contentType) {
      params.args.contentType = media.contentType;
    }
    if (!filename) {
      params.args.filename = inferAttachmentFilename({
        mediaHint: media.fileName ?? mediaSource,
        contentType: media.contentType ?? contentTypeParam ?? undefined,
      });
    }
  } else if (!filename) {
    params.args.filename = inferAttachmentFilename({
      mediaHint: mediaSource,
      contentType: contentTypeParam ?? undefined,
    });
  }
}

async function hydrateSendAttachmentParams(params: {
  cfg: ClawdbotConfig;
  channel: ChannelId;
  accountId?: string | null;
  args: Record<string, unknown>;
  action: ChannelMessageActionName;
  dryRun?: boolean;
}): Promise<void> {
  if (params.action !== 'sendAttachment') return;

  const mediaHint = readStringParam(params.args, 'media', { trim: false });
  const fileHint =
    readStringParam(params.args, 'path', { trim: false }) ??
    readStringParam(params.args, 'filePath', { trim: false });
  const contentTypeParam =
    readStringParam(params.args, 'contentType') ??
    readStringParam(params.args, 'mimeType');
  const caption = readStringParam(params.args, 'caption', {
    allowEmpty: true,
  })?.trim();
  const message = readStringParam(params.args, 'message', {
    allowEmpty: true,
  })?.trim();
  if (!caption && message) params.args.caption = message;

  const rawBuffer = readStringParam(params.args, 'buffer', { trim: false });
  const normalized = normalizeBase64Payload({
    base64: rawBuffer,
    contentType: contentTypeParam ?? undefined,
  });
  if (normalized.base64 !== rawBuffer && normalized.base64) {
    params.args.buffer = normalized.base64;
    if (normalized.contentType && !contentTypeParam) {
      params.args.contentType = normalized.contentType;
    }
  }

  const filename = readStringParam(params.args, 'filename');
  const mediaSource = mediaHint ?? fileHint;

  if (
    !params.dryRun &&
    !readStringParam(params.args, 'buffer', { trim: false }) &&
    mediaSource
  ) {
    const maxBytes = resolveAttachmentMaxBytes({
      cfg: params.cfg,
      channel: params.channel,
      accountId: params.accountId,
    });
    const media = await loadWebMedia(mediaSource, maxBytes);
    params.args.buffer = media.buffer.toString('base64');
    if (!contentTypeParam && media.contentType) {
      params.args.contentType = media.contentType;
    }
    if (!filename) {
      params.args.filename = inferAttachmentFilename({
        mediaHint: media.fileName ?? mediaSource,
        contentType: media.contentType ?? contentTypeParam ?? undefined,
      });
    }
  } else if (!filename) {
    params.args.filename = inferAttachmentFilename({
      mediaHint: mediaSource,
      contentType: contentTypeParam ?? undefined,
    });
  }
}

function parseButtonsParam(params: Record<string, unknown>): void {
  const raw = params.buttons;
  if (typeof raw !== 'string') return;
  const trimmed = raw.trim();
  if (!trimmed) {
    delete params.buttons;
    return;
  }
  try {
    params.buttons = JSON.parse(trimmed) as unknown;
  } catch {
    throw new Error('--buttons must be valid JSON');
  }
}

function parseCardParam(params: Record<string, unknown>): void {
  const raw = params.card;
  if (typeof raw !== 'string') return;
  const trimmed = raw.trim();
  if (!trimmed) {
    delete params.card;
    return;
  }
  try {
    params.card = JSON.parse(trimmed) as unknown;
  } catch {
    throw new Error('--card must be valid JSON');
  }
}

async function resolveChannel(
  cfg: ClawdbotConfig,
  params: Record<string, unknown>
) {
  const channelHint = readStringParam(params, 'channel');
  const selection = await resolveMessageChannelSelection({
    cfg,
    channel: channelHint,
  });
  return selection.channel;
}

async function resolveActionTarget(params: {
  cfg: ClawdbotConfig;
  channel: ChannelId;
  action: ChannelMessageActionName;
  args: Record<string, unknown>;
  accountId?: string | null;
}): Promise<ResolvedMessagingTarget | undefined> {
  let resolvedTarget: ResolvedMessagingTarget | undefined;
  const toRaw = typeof params.args.to === 'string' ? params.args.to.trim() : '';
  if (toRaw) {
    const resolved = await resolveChannelTarget({
      cfg: params.cfg,
      channel: params.channel,
      input: toRaw,
      accountId: params.accountId ?? undefined,
    });
    if (resolved.ok) {
      params.args.to = resolved.target.to;
      resolvedTarget = resolved.target;
    } else {
      throw resolved.error;
    }
  }
  const channelIdRaw =
    typeof params.args.channelId === 'string'
      ? params.args.channelId.trim()
      : '';
  if (channelIdRaw) {
    const resolved = await resolveChannelTarget({
      cfg: params.cfg,
      channel: params.channel,
      input: channelIdRaw,
      accountId: params.accountId ?? undefined,
      preferredKind: 'group',
    });
    if (resolved.ok) {
      if (resolved.target.kind === 'user') {
        throw new Error(
          `Channel id "${channelIdRaw}" resolved to a user target.`
        );
      }
      params.args.channelId = resolved.target.to.replace(
        /^(channel|group):/i,
        ''
      );
    } else {
      throw resolved.error;
    }
  }
  return resolvedTarget;
}

type ResolvedActionContext = {
  cfg: ClawdbotConfig;
  params: Record<string, unknown>;
  channel: ChannelId;
  accountId?: string | null;
  dryRun: boolean;
  gateway?: MessageActionRunnerGateway;
  input: RunMessageActionParams;
  agentId?: string;
  resolvedTarget?: ResolvedMessagingTarget;
  abortSignal?: AbortSignal;
};
function resolveGateway(
  input: RunMessageActionParams
): MessageActionRunnerGateway | undefined {
  if (!input.gateway) return undefined;
  return {
    url: input.gateway.url,
    token: input.gateway.token,
    timeoutMs: input.gateway.timeoutMs,
    clientName: input.gateway.clientName,
    clientDisplayName: input.gateway.clientDisplayName,
    mode: input.gateway.mode,
  };
}

async function handleBroadcastAction(
  input: RunMessageActionParams,
  params: Record<string, unknown>
): Promise<MessageActionRunResult> {
  throwIfAborted(input.abortSignal);
  const broadcastEnabled =
    input.cfg.tools?.message?.broadcast?.enabled !== false;
  if (!broadcastEnabled) {
    throw new Error(
      'Broadcast is disabled. Set tools.message.broadcast.enabled to true.'
    );
  }
  const rawTargets =
    readStringArrayParam(params, 'targets', { required: true }) ?? [];
  if (rawTargets.length === 0) {
    throw new Error('Broadcast requires at least one target in --targets.');
  }
  const channelHint = readStringParam(params, 'channel');
  const configured = await listConfiguredMessageChannels(input.cfg);
  if (configured.length === 0) {
    throw new Error('Broadcast requires at least one configured channel.');
  }
  const targetChannels =
    channelHint && channelHint.trim().toLowerCase() !== 'all'
      ? [await resolveChannel(input.cfg, { channel: channelHint })]
      : configured;
  const results: Array<{
    channel: ChannelId;
    to: string;
    ok: boolean;
    error?: string;
    result?: MessageSendResult;
  }> = [];
  const isAbortError = (err: unknown): boolean =>
    err instanceof Error && err.name === 'AbortError';
  for (const targetChannel of targetChannels) {
    throwIfAborted(input.abortSignal);
    for (const target of rawTargets) {
      throwIfAborted(input.abortSignal);
      try {
        const resolved = await resolveChannelTarget({
          cfg: input.cfg,
          channel: targetChannel,
          input: target,
        });
        if (!resolved.ok) throw resolved.error;
        const sendResult = await runMessageAction({
          ...input,
          action: 'send',
          params: {
            ...params,
            channel: targetChannel,
            target: resolved.target.to,
          },
        });
        results.push({
          channel: targetChannel,
          to: resolved.target.to,
          ok: true,
          result:
            sendResult.kind === 'send' ? sendResult.sendResult : undefined,
        });
      } catch (err) {
        if (isAbortError(err)) throw err;
        results.push({
          channel: targetChannel,
          to: target,
          ok: false,
          error: err instanceof Error ? err.message : String(err),
        });
      }
    }
  }
  return {
    kind: 'broadcast',
    channel: (targetChannels[0] ?? 'discord') as ChannelId,
    action: 'broadcast',
    handledBy: input.dryRun ? 'dry-run' : 'core',
    payload: { results },
    dryRun: Boolean(input.dryRun),
  };
}

function throwIfAborted(abortSignal?: AbortSignal): void {
  if (abortSignal?.aborted) {
    const err = new Error('Message send aborted');
    err.name = 'AbortError';
    throw err;
  }
}

async function handleSendAction(
  ctx: ResolvedActionContext
): Promise<MessageActionRunResult> {
  const {
    cfg,
    params,
    channel,
    accountId,
    dryRun,
    gateway,
    input,
    agentId,
    resolvedTarget,
    abortSignal,
  } = ctx;
  throwIfAborted(abortSignal);
  const action: ChannelMessageActionName = 'send';
  const to = readStringParam(params, 'to', { required: true });
  // Support media, path, and filePath parameters for attachments
  const mediaHint =
    readStringParam(params, 'media', { trim: false }) ??
    readStringParam(params, 'path', { trim: false }) ??
    readStringParam(params, 'filePath', { trim: false });
  const hasCard = params.card != null && typeof params.card === 'object';
  let message =
    readStringParam(params, 'message', {
      required: !mediaHint && !hasCard,
      allowEmpty: true,
    }) ?? '';

  const parsed = parseReplyDirectives(message);
  const mergedMediaUrls: string[] = [];
  const seenMedia = new Set<string>();
  const pushMedia = (value?: string | null) => {
    const trimmed = value?.trim();
    if (!trimmed) return;
    if (seenMedia.has(trimmed)) return;
    seenMedia.add(trimmed);
    mergedMediaUrls.push(trimmed);
  };
  pushMedia(mediaHint);
  for (const url of parsed.mediaUrls ?? []) pushMedia(url);
  pushMedia(parsed.mediaUrl);
  message = parsed.text;
  params.message = message;
  if (!params.replyTo && parsed.replyToId) params.replyTo = parsed.replyToId;
  if (!params.media) {
    // Use path/filePath if media not set, then fall back to parsed directives
    params.media = mergedMediaUrls[0] || undefined;
  }

  message = await maybeApplyCrossContextMarker({
    cfg,
    channel,
    action,
    target: to,
    toolContext: input.toolContext,
    accountId,
    args: params,
    message,
    preferEmbeds: true,
  });

  const mediaUrl = readStringParam(params, 'media', { trim: false });
  const gifPlayback = readBooleanParam(params, 'gifPlayback') ?? false;
  const bestEffort = readBooleanParam(params, 'bestEffort');

  // Extract location parameters
  const latitude = readNumberParam(params, 'latitude');
  const longitude = readNumberParam(params, 'longitude');
  const locationName = readStringParam(params, 'locationName');
  const locationAddress = readStringParam(params, 'locationAddress');
  const locationAccuracy = readNumberParam(params, 'locationAccuracy');

  // Validate location coordinates if provided
  let location:
    | {
        latitude: number;
        longitude: number;
        name?: string;
        address?: string;
        accuracy?: number;
      }
    | undefined;
  if (latitude != null && longitude != null) {
    // Validate latitude range: -90 to 90
    if (!Number.isFinite(latitude) || latitude < -90 || latitude > 90) {
      throw new Error(
        `Invalid latitude: ${latitude}. Must be between -90 and 90.`
      );
    }
    // Validate longitude range: -180 to 180
    if (!Number.isFinite(longitude) || longitude < -180 || longitude > 180) {
      throw new Error(
        `Invalid longitude: ${longitude}. Must be between -180 and 180.`
      );
    }
    // Validate accuracy if provided (must be positive)
    if (
      locationAccuracy != null &&
      (!Number.isFinite(locationAccuracy) || locationAccuracy < 0)
    ) {
      throw new Error(
        `Invalid location accuracy: ${locationAccuracy}. Must be a positive number.`
      );
    }
    location = {
      latitude,
      longitude,
      name: locationName ?? undefined,
      address: locationAddress ?? undefined,
      accuracy: locationAccuracy ?? undefined,
    };
  } else if (latitude != null || longitude != null) {
    // If only one coordinate is provided, that's an error
    throw new Error(
      'Both latitude and longitude are required for location messages.'
    );
  }

  const replyToId = readStringParam(params, 'replyTo');
  const threadId = readStringParam(params, 'threadId');
  // Slack auto-threading can inject threadTs without explicit params; mirror to that session key.
  const slackAutoThreadId =
    channel === 'slack' && !replyToId && !threadId
      ? resolveSlackAutoThreadId({ to, toolContext: input.toolContext })
      : undefined;
  const outboundRoute =
    agentId && !dryRun
      ? await resolveOutboundSessionRoute({
          cfg,
          channel,
          agentId,
          accountId,
          target: to,
          resolvedTarget,
          replyToId,
          threadId: threadId ?? slackAutoThreadId,
        })
      : null;
  if (outboundRoute && agentId && !dryRun) {
    await ensureOutboundSessionEntry({
      cfg,
      agentId,
      channel,
      accountId,
      route: outboundRoute,
    });
  }
  const mirrorMediaUrls =
    mergedMediaUrls.length > 0
      ? mergedMediaUrls
      : mediaUrl
        ? [mediaUrl]
        : undefined;
  throwIfAborted(abortSignal);
  const send = await executeSendAction({
    ctx: {
      cfg,
      channel,
      params,
      accountId: accountId ?? undefined,
      gateway,
      toolContext: input.toolContext,
      deps: input.deps,
      dryRun,
      mirror:
        outboundRoute && !dryRun
          ? {
              sessionKey: outboundRoute.sessionKey,
              agentId,
              text: message,
              mediaUrls: mirrorMediaUrls,
            }
          : undefined,
      abortSignal,
    },
    to,
    message,
    mediaUrl: mediaUrl || undefined,
    mediaUrls: mergedMediaUrls.length ? mergedMediaUrls : undefined,
    gifPlayback,
    bestEffort: bestEffort ?? undefined,
    location,
  });

  return {
    kind: 'send',
    channel,
    action,
    to,
    handledBy: send.handledBy,
    payload: send.payload,
    toolResult: send.toolResult,
    sendResult: send.sendResult,
    dryRun,
  };
}

async function handlePollAction(
  ctx: ResolvedActionContext
): Promise<MessageActionRunResult> {
  const {
    cfg,
    params,
    channel,
    accountId,
    dryRun,
    gateway,
    input,
    abortSignal,
  } = ctx;
  throwIfAborted(abortSignal);
  const action: ChannelMessageActionName = 'poll';
  const to = readStringParam(params, 'to', { required: true });
  const question = readStringParam(params, 'pollQuestion', {
    required: true,
  });
  const options =
    readStringArrayParam(params, 'pollOption', { required: true }) ?? [];
  if (options.length < 2) {
    throw new Error('pollOption requires at least two values');
  }
  const allowMultiselect = readBooleanParam(params, 'pollMulti') ?? false;
  const durationHours = readNumberParam(params, 'pollDurationHours', {
    integer: true,
  });
  const maxSelections = allowMultiselect ? Math.max(2, options.length) : 1;
  const base = typeof params.message === 'string' ? params.message : '';
  await maybeApplyCrossContextMarker({
    cfg,
    channel,
    action,
    target: to,
    toolContext: input.toolContext,
    accountId,
    args: params,
    message: base,
    preferEmbeds: true,
  });

  const poll = await executePollAction({
    ctx: {
      cfg,
      channel,
      params,
      accountId: accountId ?? undefined,
      gateway,
      toolContext: input.toolContext,
      dryRun,
    },
    to,
    question,
    options,
    maxSelections,
    durationHours: durationHours ?? undefined,
  });

  return {
    kind: 'poll',
    channel,
    action,
    to,
    handledBy: poll.handledBy,
    payload: poll.payload,
    toolResult: poll.toolResult,
    pollResult: poll.pollResult,
    dryRun,
  };
}

async function handlePluginAction(
  ctx: ResolvedActionContext
): Promise<MessageActionRunResult> {
  const {
    cfg,
    params,
    channel,
    accountId,
    dryRun,
    gateway,
    input,
    abortSignal,
  } = ctx;
  throwIfAborted(abortSignal);
  const action = input.action as Exclude<
    ChannelMessageActionName,
    'send' | 'poll' | 'broadcast'
  >;
  if (dryRun) {
    return {
      kind: 'action',
      channel,
      action,
      handledBy: 'dry-run',
      payload: { ok: true, dryRun: true, channel, action },
      dryRun: true,
    };
  }

  const handled = await dispatchChannelMessageAction({
    channel,
    action,
    cfg,
    params,
    accountId: accountId ?? undefined,
    gateway,
    toolContext: input.toolContext,
    dryRun,
  });
  if (!handled) {
    throw new Error(
      `Message action ${action} not supported for channel ${channel}.`
    );
  }
  return {
    kind: 'action',
    channel,
    action,
    handledBy: 'plugin',
    payload: extractToolPayload(handled),
    toolResult: handled,
    dryRun,
  };
}

export async function runMessageAction(
  input: RunMessageActionParams
): Promise<MessageActionRunResult> {
  const cfg = input.cfg;
  const params = { ...input.params };
  const resolvedAgentId =
    input.agentId ??
    (input.sessionKey
      ? resolveSessionAgentId({ sessionKey: input.sessionKey, config: cfg })
      : undefined);
  parseButtonsParam(params);
  parseCardParam(params);

  const action = input.action;
  if (action === 'broadcast') {
    return handleBroadcastAction(input, params);
  }

  const explicitTarget =
    typeof params.target === 'string' ? params.target.trim() : '';
  const hasLegacyTarget =
    (typeof params.to === 'string' && params.to.trim().length > 0) ||
    (typeof params.channelId === 'string' &&
      params.channelId.trim().length > 0);
  if (explicitTarget && hasLegacyTarget) {
    delete params.to;
    delete params.channelId;
  }
  if (
    !explicitTarget &&
    !hasLegacyTarget &&
    actionRequiresTarget(action) &&
    !actionHasTarget(action, params)
  ) {
    const inferredTarget = input.toolContext?.currentChannelId?.trim();
    if (inferredTarget) {
      params.target = inferredTarget;
    }
  }
  if (!explicitTarget && actionRequiresTarget(action) && hasLegacyTarget) {
    const legacyTo = typeof params.to === 'string' ? params.to.trim() : '';
    const legacyChannelId =
      typeof params.channelId === 'string' ? params.channelId.trim() : '';
    const legacyTarget = legacyTo || legacyChannelId;
    if (legacyTarget) {
      params.target = legacyTarget;
      delete params.to;
      delete params.channelId;
    }
  }
  const explicitChannel =
    typeof params.channel === 'string' ? params.channel.trim() : '';
  if (!explicitChannel) {
    const inferredChannel = normalizeMessageChannel(
      input.toolContext?.currentChannelProvider
    );
    if (inferredChannel && isDeliverableMessageChannel(inferredChannel)) {
      params.channel = inferredChannel;
    }
  }

  applyTargetToParams({ action, args: params });
  if (actionRequiresTarget(action)) {
    if (!actionHasTarget(action, params)) {
      throw new Error(`Action ${action} requires a target.`);
    }
  }

  const channel = await resolveChannel(cfg, params);
  const accountId =
    readStringParam(params, 'accountId') ?? input.defaultAccountId;
  if (accountId) {
    params.accountId = accountId;
  }
  const dryRun = Boolean(input.dryRun ?? readBooleanParam(params, 'dryRun'));

  await hydrateSendAttachmentParams({
    cfg,
    channel,
    accountId,
    args: params,
    action,
    dryRun,
  });

  await hydrateSetGroupIconParams({
    cfg,
    channel,
    accountId,
    args: params,
    action,
    dryRun,
  });

  const resolvedTarget = await resolveActionTarget({
    cfg,
    channel,
    action,
    args: params,
    accountId,
  });

  enforceCrossContextPolicy({
    channel,
    action,
    args: params,
    toolContext: input.toolContext,
    cfg,
  });

  const gateway = resolveGateway(input);

  if (action === 'send') {
    return handleSendAction({
      cfg,
      params,
      channel,
      accountId,
      dryRun,
      gateway,
      input,
      agentId: resolvedAgentId,
      resolvedTarget,
      abortSignal: input.abortSignal,
    });
  }

  if (action === 'poll') {
    return handlePollAction({
      cfg,
      params,
      channel,
      accountId,
      dryRun,
      gateway,
      input,
      abortSignal: input.abortSignal,
    });
  }

  return handlePluginAction({
    cfg,
    params,
    channel,
    accountId,
    dryRun,
    gateway,
    input,
    abortSignal: input.abortSignal,
  });
}