import type { OpenClawPluginApi } from "openclaw/plugin-sdk";
import { execFileSync } from "node:child_process";
import path from "node:path";
import os from "node:os";

export function registerAddGuildCommand(api: OpenClawPluginApi): void {
  api.registerCommand({
    name: "add-guild",
    description: "Add a Discord guild to the discord-guilds skill",
    acceptsArgs: true,
    handler: async (cmdCtx) => {
      const args = (cmdCtx.args || "").trim();
      if (!args) {
        return {
          text: "Usage: /add-guild <guild-id> <description>\nExample: /add-guild 123456789012345678 \"Production server\"",
          isError: true,
        };
      }

      const parts = args.split(/\s+/);
      if (parts.length < 2) {
        return {
          text: "Error: Both guild-id and description are required.\nUsage: /add-guild <guild-id> <description>",
          isError: true,
        };
      }

      const guildId = parts[0];
      const description = parts.slice(1).join(" ");

      // Validate guild ID
      if (!/^\d+$/.test(guildId)) {
        return {
          text: "Error: guild-id must be a numeric Discord snowflake (e.g., 123456789012345678)",
          isError: true,
        };
      }

      // Resolve the skill script path
      const openClawDir = (api.config as Record<string, unknown>)?.["dirigentStateDir"] as string || path.join(os.homedir(), ".openclaw");
      const scriptPath = path.join(openClawDir, "skills", "discord-guilds", "scripts", "add-guild");

      try {
        const result = execFileSync(process.execPath, [scriptPath, guildId, description], {
          encoding: "utf8",
          timeout: 5000,
        });
        return { text: result.trim() };
      } catch (e: any) {
        const stderr = e?.stderr?.toString?.() || "";
        const stdout = e?.stdout?.toString?.() || "";
        return {
          text: `Failed to add guild: ${stderr || stdout || String(e)}`,
          isError: true,
        };
      }
    },
  });
}