import {
  applyAccountNameToChannelSection,
  buildChannelConfigSchema,
  DEFAULT_ACCOUNT_ID,
  deleteAccountFromConfigSection,
  formatPairingApproveHint,
  formatTrimmedAllowFromEntries,
  getChatChannelMeta,
  imessageOnboardingAdapter,
  IMessageConfigSchema,
  listIMessageAccountIds,
  looksLikeIMessageTargetId,
  migrateBaseNameToDefaultAccount,
  normalizeAccountId,
  normalizeIMessageMessagingTarget,
  PAIRING_APPROVED_MESSAGE,
  resolveChannelMediaMaxBytes,
  resolveDefaultIMessageAccountId,
  resolveIMessageAccount,
  resolveIMessageConfigAllowFrom,
  resolveIMessageConfigDefaultTo,
  resolveIMessageGroupRequireMention,
  resolveIMessageGroupToolPolicy,
  resolveAllowlistProviderRuntimeGroupPolicy,
  resolveDefaultGroupPolicy,
  setAccountEnabledInConfigSection,
  type ChannelPlugin,
  type ResolvedIMessageAccount,
} from "openclaw/plugin-sdk/imessage";
import { getIMessageRuntime } from "./runtime.js";

const meta = getChatChannelMeta("imessage");

function buildIMessageSetupPatch(input: {
  cliPath?: string;
  dbPath?: string;
  service?: string;
  region?: string;
}) {
  return {
    ...(input.cliPath ? { cliPath: input.cliPath } : {}),
    ...(input.dbPath ? { dbPath: input.dbPath } : {}),
    ...(input.service ? { service: input.service } : {}),
    ...(input.region ? { region: input.region } : {}),
  };
}

type IMessageSendFn = ReturnType<
  typeof getIMessageRuntime
>["channel"]["imessage"]["sendMessageIMessage"];

async function sendIMessageOutbound(params: {
  cfg: Parameters<typeof resolveIMessageAccount>[0]["cfg"];
  to: string;
  text: string;
  mediaUrl?: string;
  mediaLocalRoots?: readonly string[];
  accountId?: string;
  deps?: { sendIMessage?: IMessageSendFn };
  replyToId?: string;
}) {
  const send =
    params.deps?.sendIMessage ?? getIMessageRuntime().channel.imessage.sendMessageIMessage;
  const maxBytes = resolveChannelMediaMaxBytes({
    cfg: params.cfg,
    resolveChannelLimitMb: ({ cfg, accountId }) =>
      cfg.channels?.imessage?.accounts?.[accountId]?.mediaMaxMb ??
      cfg.channels?.imessage?.mediaMaxMb,
    accountId: params.accountId,
  });
  return await send(params.to, params.text, {
    config: params.cfg,
    ...(params.mediaUrl ? { mediaUrl: params.mediaUrl } : {}),
    ...(params.mediaLocalRoots?.length ? { mediaLocalRoots: params.mediaLocalRoots } : {}),
    maxBytes,
    accountId: params.accountId ?? undefined,
    replyToId: params.replyToId ?? undefined,
  });
}

export const imessagePlugin: ChannelPlugin<ResolvedIMessageAccount> = {
  id: "imessage",
  meta: {
    ...meta,
    aliases: ["imsg"],
    showConfigured: false,
  },
  onboarding: imessageOnboardingAdapter,
  pairing: {
    idLabel: "imessageSenderId",
    notifyApproval: async ({ id }) => {
      await getIMessageRuntime().channel.imessage.sendMessageIMessage(id, PAIRING_APPROVED_MESSAGE);
    },
  },
  capabilities: {
    chatTypes: ["direct", "group"],
    media: true,
  },
  reload: { configPrefixes: ["channels.imessage"] },
  configSchema: buildChannelConfigSchema(IMessageConfigSchema),
  config: {
    listAccountIds: (cfg) => listIMessageAccountIds(cfg),
    resolveAccount: (cfg, accountId) => resolveIMessageAccount({ cfg, accountId }),
    defaultAccountId: (cfg) => resolveDefaultIMessageAccountId(cfg),
    setAccountEnabled: ({ cfg, accountId, enabled }) =>
      setAccountEnabledInConfigSection({
        cfg,
        sectionKey: "imessage",
        accountId,
        enabled,
        allowTopLevel: true,
      }),
    deleteAccount: ({ cfg, accountId }) =>
      deleteAccountFromConfigSection({
        cfg,
        sectionKey: "imessage",
        accountId,
        clearBaseFields: ["cliPath", "dbPath", "service", "region", "name"],
      }),
    isConfigured: (account) => account.configured,
    describeAccount: (account) => ({
      accountId: account.accountId,
      name: account.name,
      enabled: account.enabled,
      configured: account.configured,
    }),
    resolveAllowFrom: ({ cfg, accountId }) => resolveIMessageConfigAllowFrom({ cfg, accountId }),
    formatAllowFrom: ({ allowFrom }) => formatTrimmedAllowFromEntries(allowFrom),
    resolveDefaultTo: ({ cfg, accountId }) => resolveIMessageConfigDefaultTo({ cfg, accountId }),
  },
  security: {
    resolveDmPolicy: ({ cfg, accountId, account }) => {
      const resolvedAccountId = accountId ?? account.accountId ?? DEFAULT_ACCOUNT_ID;
      const useAccountPath = Boolean(cfg.channels?.imessage?.accounts?.[resolvedAccountId]);
      const basePath = useAccountPath
        ? `channels.imessage.accounts.${resolvedAccountId}.`
        : "channels.imessage.";
      return {
        policy: account.config.dmPolicy ?? "pairing",
        allowFrom: account.config.allowFrom ?? [],
        policyPath: `${basePath}dmPolicy`,
        allowFromPath: basePath,
        approveHint: formatPairingApproveHint("imessage"),
      };
    },
    collectWarnings: ({ account, cfg }) => {
      const defaultGroupPolicy = resolveDefaultGroupPolicy(cfg);
      const { groupPolicy } = resolveAllowlistProviderRuntimeGroupPolicy({
        providerConfigPresent: cfg.channels?.imessage !== undefined,
        groupPolicy: account.config.groupPolicy,
        defaultGroupPolicy,
      });
      if (groupPolicy !== "open") {
        return [];
      }
      return [
        `- iMessage groups: groupPolicy="open" allows any member to trigger the bot. Set channels.imessage.groupPolicy="allowlist" + channels.imessage.groupAllowFrom to restrict senders.`,
      ];
    },
  },
  groups: {
    resolveRequireMention: resolveIMessageGroupRequireMention,
    resolveToolPolicy: resolveIMessageGroupToolPolicy,
  },
  messaging: {
    normalizeTarget: normalizeIMessageMessagingTarget,
    targetResolver: {
      looksLikeId: looksLikeIMessageTargetId,
      hint: "<handle|chat_id:ID>",
    },
  },
  setup: {
    resolveAccountId: ({ accountId }) => normalizeAccountId(accountId),
    applyAccountName: ({ cfg, accountId, name }) =>
      applyAccountNameToChannelSection({
        cfg,
        channelKey: "imessage",
        accountId,
        name,
      }),
    applyAccountConfig: ({ cfg, accountId, input }) => {
      const namedConfig = applyAccountNameToChannelSection({
        cfg,
        channelKey: "imessage",
        accountId,
        name: input.name,
      });
      const next = (
        accountId !== DEFAULT_ACCOUNT_ID
          ? migrateBaseNameToDefaultAccount({
              cfg: namedConfig,
              channelKey: "imessage",
            })
          : namedConfig
      ) as typeof cfg;
      if (accountId === DEFAULT_ACCOUNT_ID) {
        return {
          ...next,
          channels: {
            ...next.channels,
            imessage: {
              ...next.channels?.imessage,
              enabled: true,
              ...buildIMessageSetupPatch(input),
            },
          },
        } as typeof cfg;
      }
      return {
        ...next,
        channels: {
          ...next.channels,
          imessage: {
            ...next.channels?.imessage,
            enabled: true,
            accounts: {
              ...next.channels?.imessage?.accounts,
              [accountId]: {
                ...next.channels?.imessage?.accounts?.[accountId],
                enabled: true,
                ...buildIMessageSetupPatch(input),
              },
            },
          },
        },
      } as typeof cfg;
    },
  },
  outbound: {
    deliveryMode: "direct",
    chunker: (text, limit) => getIMessageRuntime().channel.text.chunkText(text, limit),
    chunkerMode: "text",
    textChunkLimit: 4000,
    sendText: async ({ cfg, to, text, accountId, deps, replyToId }) => {
      const result = await sendIMessageOutbound({
        cfg,
        to,
        text,
        accountId: accountId ?? undefined,
        deps,
        replyToId: replyToId ?? undefined,
      });
      return { channel: "imessage", ...result };
    },
    sendMedia: async ({ cfg, to, text, mediaUrl, mediaLocalRoots, accountId, deps, replyToId }) => {
      const result = await sendIMessageOutbound({
        cfg,
        to,
        text,
        mediaUrl,
        mediaLocalRoots,
        accountId: accountId ?? undefined,
        deps,
        replyToId: replyToId ?? undefined,
      });
      return { channel: "imessage", ...result };
    },
  },
  status: {
    defaultRuntime: {
      accountId: DEFAULT_ACCOUNT_ID,
      running: false,
      lastStartAt: null,
      lastStopAt: null,
      lastError: null,
      cliPath: null,
      dbPath: null,
    },
    collectStatusIssues: (accounts) =>
      accounts.flatMap((account) => {
        const lastError = typeof account.lastError === "string" ? account.lastError.trim() : "";
        if (!lastError) {
          return [];
        }
        return [
          {
            channel: "imessage",
            accountId: account.accountId,
            kind: "runtime",
            message: `Channel error: ${lastError}`,
          },
        ];
      }),
    buildChannelSummary: ({ snapshot }) => ({
      configured: snapshot.configured ?? false,
      running: snapshot.running ?? false,
      lastStartAt: snapshot.lastStartAt ?? null,
      lastStopAt: snapshot.lastStopAt ?? null,
      lastError: snapshot.lastError ?? null,
      cliPath: snapshot.cliPath ?? null,
      dbPath: snapshot.dbPath ?? null,
      probe: snapshot.probe,
      lastProbeAt: snapshot.lastProbeAt ?? null,
    }),
    probeAccount: async ({ timeoutMs }) =>
      getIMessageRuntime().channel.imessage.probeIMessage(timeoutMs),
    buildAccountSnapshot: ({ account, runtime, probe }) => ({
      accountId: account.accountId,
      name: account.name,
      enabled: account.enabled,
      configured: account.configured,
      running: runtime?.running ?? false,
      lastStartAt: runtime?.lastStartAt ?? null,
      lastStopAt: runtime?.lastStopAt ?? null,
      lastError: runtime?.lastError ?? null,
      cliPath: runtime?.cliPath ?? account.config.cliPath ?? null,
      dbPath: runtime?.dbPath ?? account.config.dbPath ?? null,
      probe,
      lastInboundAt: runtime?.lastInboundAt ?? null,
      lastOutboundAt: runtime?.lastOutboundAt ?? null,
    }),
    resolveAccountState: ({ enabled }) => (enabled ? "enabled" : "disabled"),
  },
  gateway: {
    startAccount: async (ctx) => {
      const account = ctx.account;
      const cliPath = account.config.cliPath?.trim() || "imsg";
      const dbPath = account.config.dbPath?.trim();
      ctx.setStatus({
        accountId: account.accountId,
        cliPath,
        dbPath: dbPath ?? null,
      });
      ctx.log?.info(
        `[${account.accountId}] starting provider (${cliPath}${dbPath ? ` db=${dbPath}` : ""})`,
      );
      return getIMessageRuntime().channel.imessage.monitorIMessageProvider({
        accountId: account.accountId,
        config: ctx.cfg,
        runtime: ctx.runtime,
        abortSignal: ctx.abortSignal,
      });
    },
  },
};