import type { OpenClawPluginApi } from "openclaw/plugin-sdk";
import type { ChannelStore } from "../core/channel-store.js";
import type { IdentityRegistry } from "../core/identity-registry.js";
import { createDiscordChannel, getBotUserIdFromToken } from "../core/moderator-discord.js";
import { setSpeakerList } from "../turn-manager.js";

type ToolDeps = {
  api: OpenClawPluginApi;
  channelStore: ChannelStore;
  identityRegistry: IdentityRegistry;
  moderatorBotToken: string | undefined;
  scheduleIdentifier: string;
  /** Called by create-discussion-channel to initialize the discussion. */
  onDiscussionCreate?: (params: {
    channelId: string;
    guildId: string;
    initiatorAgentId: string;
    callbackGuildId: string;
    callbackChannelId: string;
    discussionGuide: string;
    participants: string[];
  }) => Promise<void>;
};

function getGuildIdFromSessionKey(sessionKey: string): string | undefined {
  // sessionKey doesn't encode guild — it's not available directly.
  // Guild is passed explicitly by the agent.
  return undefined;
}

function parseDiscordChannelIdFromSession(sessionKey: string): string | undefined {
  const m = sessionKey.match(/:discord:channel:(\d+)$/);
  return m?.[1];
}

function textResult(text: string) {
  return { content: [{ type: "text" as const, text }], details: undefined };
}

function errorResult(text: string) {
  return { content: [{ type: "text" as const, text }], details: { error: true } };
}

export function registerDirigentTools(deps: ToolDeps): void {
  const { api, channelStore, identityRegistry, moderatorBotToken, scheduleIdentifier, onDiscussionCreate } = deps;

  // ───────────────────────────────────────────────
  // dirigent-register
  // ───────────────────────────────────────────────
  api.registerTool((ctx) => ({
    name: "dirigent-register",
    label: "Dirigent Register",
    description: "Register or update this agent's Discord user ID in Dirigent's identity registry.",
    parameters: {
      type: "object",
      additionalProperties: false,
      properties: {
        discordUserId: { type: "string", description: "The agent's Discord user ID" },
        agentName: { type: "string", description: "Display name (optional, defaults to agentId)" },
      },
      required: ["discordUserId"],
    },
    execute: async (_toolCallId: string, params: unknown) => {
      const agentId = ctx?.agentId;
      if (!agentId) return errorResult("Cannot resolve agentId from session context");
      const p = params as { discordUserId: string; agentName?: string };
      identityRegistry.upsert({
        agentId,
        discordUserId: p.discordUserId,
        agentName: p.agentName ?? agentId,
      });
      return textResult(`Registered: agentId=${agentId} discordUserId=${p.discordUserId}`);
    },
  }));

  // ───────────────────────────────────────────────
  // Helper: create channel + set mode
  // ───────────────────────────────────────────────
  async function createManagedChannel(opts: {
    guildId: string;
    name: string;
    memberDiscordIds: string[];
    mode: "chat" | "report" | "work";
  }): Promise<{ ok: boolean; channelId?: string; error?: string }> {
    if (!moderatorBotToken) return { ok: false, error: "moderatorBotToken not configured" };

    const botId = getBotUserIdFromToken(moderatorBotToken);
    const overwrites: Array<{ id: string; type: number; allow?: string; deny?: string }> = [
      { id: opts.guildId, type: 0, deny: "1024" }, // deny everyone
    ];
    if (botId) overwrites.push({ id: botId, type: 1, allow: "1024" });
    for (const uid of opts.memberDiscordIds) {
      if (uid) overwrites.push({ id: uid, type: 1, allow: "1024" });
    }

    let channelId: string;
    try {
      channelId = await createDiscordChannel({
        token: moderatorBotToken,
        guildId: opts.guildId,
        name: opts.name,
        permissionOverwrites: overwrites,
        logger: api.logger,
      });
    } catch (err) {
      return { ok: false, error: String(err) };
    }

    try {
      channelStore.setLockedMode(channelId, opts.mode);
    } catch {
      channelStore.setMode(channelId, opts.mode);
    }

    return { ok: true, channelId };
  }

  // ───────────────────────────────────────────────
  // create-chat-channel
  // ───────────────────────────────────────────────
  api.registerTool({
    name: "create-chat-channel",
    label: "Create Chat Channel",
    description: "Create a new private Discord channel in the specified guild with mode=chat.",
    parameters: {
      type: "object",
      additionalProperties: false,
      properties: {
        guildId: { type: "string", description: "Guild ID to create the channel in" },
        name: { type: "string", description: "Channel name" },
        participants: {
          type: "array", items: { type: "string" },
          description: "Discord user IDs to add (moderator bot always added)",
        },
      },
      required: ["guildId", "name"],
    },
    execute: async (_toolCallId: string, params: unknown) => {
      const p = params as { guildId: string; name: string; participants?: string[] };
      const result = await createManagedChannel({
        guildId: p.guildId, name: p.name,
        memberDiscordIds: p.participants ?? [],
        mode: "chat",
      });
      if (!result.ok) return errorResult(`Failed: ${result.error}`);
      return textResult(`Created chat channel: ${result.channelId}`);
    },
  });

  // ───────────────────────────────────────────────
  // create-report-channel
  // ───────────────────────────────────────────────
  api.registerTool({
    name: "create-report-channel",
    label: "Create Report Channel",
    description: "Create a new private Discord channel with mode=report. Agents can post to it but are not woken by messages.",
    parameters: {
      type: "object",
      additionalProperties: false,
      properties: {
        guildId: { type: "string", description: "Guild ID" },
        name: { type: "string", description: "Channel name" },
        members: { type: "array", items: { type: "string" }, description: "Discord user IDs to add" },
      },
      required: ["guildId", "name"],
    },
    execute: async (_toolCallId: string, params: unknown) => {
      const p = params as { guildId: string; name: string; members?: string[] };
      const result = await createManagedChannel({
        guildId: p.guildId, name: p.name,
        memberDiscordIds: p.members ?? [],
        mode: "report",
      });
      if (!result.ok) return errorResult(`Failed: ${result.error}`);
      return textResult(`Created report channel: ${result.channelId}`);
    },
  });

  // ───────────────────────────────────────────────
  // create-work-channel
  // ───────────────────────────────────────────────
  api.registerTool((ctx) => ({
    name: "create-work-channel",
    label: "Create Work Channel",
    description: "Create a new private Discord workspace channel with mode=work (turn-manager disabled, mode locked).",
    parameters: {
      type: "object",
      additionalProperties: false,
      properties: {
        guildId: { type: "string", description: "Guild ID" },
        name: { type: "string", description: "Channel name" },
        members: { type: "array", items: { type: "string" }, description: "Additional Discord user IDs to add" },
      },
      required: ["guildId", "name"],
    },
    execute: async (_toolCallId: string, params: unknown) => {
      const p = params as { guildId: string; name: string; members?: string[] };
      // Include calling agent's Discord ID if known
      const callerDiscordId = ctx?.agentId ? identityRegistry.findByAgentId(ctx.agentId)?.discordUserId : undefined;
      const members = [...(p.members ?? [])];
      if (callerDiscordId && !members.includes(callerDiscordId)) members.push(callerDiscordId);

      const result = await createManagedChannel({
        guildId: p.guildId, name: p.name,
        memberDiscordIds: members,
        mode: "work",
      });
      if (!result.ok) return errorResult(`Failed: ${result.error}`);
      return textResult(`Created work channel: ${result.channelId}`);
    },
  }));

  // ───────────────────────────────────────────────
  // create-discussion-channel
  // ───────────────────────────────────────────────
  api.registerTool((ctx) => ({
    name: "create-discussion-channel",
    label: "Create Discussion Channel",
    description: "Create a structured discussion channel between agents. The calling agent becomes the initiator.",
    parameters: {
      type: "object",
      additionalProperties: false,
      properties: {
        callbackGuildId: { type: "string", description: "Guild ID of your current channel (for callback after discussion)" },
        callbackChannelId: { type: "string", description: "Channel ID to post the summary to after discussion completes" },
        name: { type: "string", description: "Discussion channel name" },
        discussionGuide: { type: "string", description: "Topic, goals, and completion criteria for the discussion" },
        participants: { type: "array", items: { type: "string" }, description: "Discord user IDs of participating agents" },
      },
      required: ["callbackGuildId", "callbackChannelId", "name", "discussionGuide", "participants"],
    },
    execute: async (_toolCallId: string, params: unknown) => {
      const p = params as {
        callbackGuildId: string;
        callbackChannelId: string;
        name: string;
        discussionGuide: string;
        participants: string[];
      };
      const initiatorAgentId = ctx?.agentId;
      if (!initiatorAgentId) {
        return errorResult("Cannot resolve initiator agentId from session");
      }
      if (!moderatorBotToken) {
        return errorResult("moderatorBotToken not configured");
      }
      if (!onDiscussionCreate) {
        return errorResult("Discussion service not available");
      }

      const botId = getBotUserIdFromToken(moderatorBotToken);
      const initiatorDiscordId = identityRegistry.findByAgentId(initiatorAgentId)?.discordUserId;
      const memberIds = [...new Set([
        ...(initiatorDiscordId ? [initiatorDiscordId] : []),
        ...p.participants,
        ...(botId ? [botId] : []),
      ])];

      const overwrites: Array<{ id: string; type: number; allow?: string; deny?: string }> = [
        { id: p.callbackGuildId, type: 0, deny: "1024" },
        ...memberIds.map((id) => ({ id, type: 1, allow: "1024" })),
      ];

      let channelId: string;
      try {
        channelId = await createDiscordChannel({
          token: moderatorBotToken,
          guildId: p.callbackGuildId,
          name: p.name,
          permissionOverwrites: overwrites,
          logger: api.logger,
        });
      } catch (err) {
        return errorResult(`Failed to create channel: ${String(err)}`);
      }

      try {
        channelStore.setLockedMode(channelId, "discussion", {
          initiatorAgentId,
          callbackGuildId: p.callbackGuildId,
          callbackChannelId: p.callbackChannelId,
          concluded: false,
        });
      } catch (err) {
        return errorResult(`Failed to register channel: ${String(err)}`);
      }

      await onDiscussionCreate({
        channelId,
        guildId: p.callbackGuildId,
        initiatorAgentId,
        callbackGuildId: p.callbackGuildId,
        callbackChannelId: p.callbackChannelId,
        discussionGuide: p.discussionGuide,
        participants: p.participants,
      });

      return textResult(`Discussion channel created: ${channelId}`);
    },
  }));

  // ───────────────────────────────────────────────
  // discussion-complete
  // ───────────────────────────────────────────────
  api.registerTool((ctx) => ({
    name: "discussion-complete",
    label: "Discussion Complete",
    description: "Mark a discussion as complete, archive the channel, and post the summary path to the callback channel.",
    parameters: {
      type: "object",
      additionalProperties: false,
      properties: {
        discussionChannelId: { type: "string", description: "The discussion channel ID" },
        summary: { type: "string", description: "File path to the summary (must be under {workspace}/discussion-summary/)" },
      },
      required: ["discussionChannelId", "summary"],
    },
    execute: async (_toolCallId: string, params: unknown) => {
      const p = params as { discussionChannelId: string; summary: string };
      const callerAgentId = ctx?.agentId;
      if (!callerAgentId) {
        return errorResult("Cannot resolve agentId from session");
      }

      const rec = channelStore.getRecord(p.discussionChannelId);
      if (rec.mode !== "discussion") {
        return errorResult(`Channel ${p.discussionChannelId} is not a discussion channel`);
      }
      if (!rec.discussion) {
        return errorResult("Discussion metadata not found");
      }
      if (rec.discussion.initiatorAgentId !== callerAgentId) {
        return errorResult(`Only the initiator (${rec.discussion.initiatorAgentId}) may call discussion-complete`);
      }
      if (!p.summary.includes("discussion-summary")) {
        return errorResult("Summary path must be under {workspace}/discussion-summary/");
      }

      channelStore.concludeDiscussion(p.discussionChannelId);

      if (moderatorBotToken) {
        const { sendModeratorMessage } = await import("../core/moderator-discord.js");
        await sendModeratorMessage(
          moderatorBotToken, rec.discussion.callbackChannelId,
          `Discussion complete. Summary: ${p.summary}`,
          api.logger,
        ).catch(() => undefined);
      }

      return textResult(`Discussion ${p.discussionChannelId} concluded. Summary posted to ${rec.discussion.callbackChannelId}.`);
    },
  }));
}