/**
 * PTY RPC handlers — create, write, resize, unsubscribe, close sessions.
 */

import type { PtyClient } from "../pty-client.ts";

export function createPtyHandlers(ptyClient: PtyClient) {
  return {
    "pty.create": async ({ sessionId, cols, rows, cwd, shell, args }: {
      sessionId: string; cols: number; rows: number; cwd?: string;
      shell?: string; args?: string[];
    }) => {
      if (!ptyClient.isConnected) {
        return { ok: false, error: "PTY daemon not connected" };
      }
      try {
        ptyClient.createSession({ id: sessionId, cols, rows, cwd, shell, args });
        return { ok: true };
      } catch (err) {
        const error = err instanceof Error ? err.message : String(err);
        console.error(`[pty.create] ${sessionId}: ${error}`);
        return { ok: false, error };
      }
    },

    "pty.write": ({ sessionId, data }: { sessionId: string; data: string }) => {
      if (!ptyClient.isConnected) {
        console.error(`[pty.write] ${sessionId}: daemon not connected`);
        return { ok: false };
      }
      try {
        ptyClient.writeInput(sessionId, data);
        return { ok: true };
      } catch (err) {
        const error = err instanceof Error ? err.message : String(err);
        console.error(`[pty.write] ${sessionId}: ${error}`);
        return { ok: false };
      }
    },

    "pty.resize": ({ sessionId, cols, rows }: { sessionId: string; cols: number; rows: number }) => {
      if (!ptyClient.isConnected) return { ok: true };
      try {
        ptyClient.resize(sessionId, cols, rows);
      } catch (err) {
        console.error(`[pty.resize] ${sessionId}:`, err);
      }
      return { ok: true };
    },

    "pty.unsubscribe": ({ sessionId }: { sessionId: string }) => {
      try {
        ptyClient.unsubscribe(sessionId);
      } catch (err) {
        console.error(`[pty.unsubscribe] ${sessionId}:`, err);
      }
      return { ok: true };
    },

    "pty.close": ({ sessionId }: { sessionId: string }) => {
      try {
        ptyClient.closeSession(sessionId);
      } catch (err) {
        console.error(`[pty.close] ${sessionId}:`, err);
      }
      return { ok: true };
    },
  };
}