// ABOUTME: DeepSeek Agent Default — auto-injects deepseek-v4-flash model into subagent_create calls
// ABOUTME: Intercepts tool_call events and patches the model parameter when not explicitly set

import type { ExtensionAPI, ExtensionContext, ToolCallEvent, ToolCallEventResult } from "@mariozechner/pi-coding-agent";

export default function (pi: ExtensionAPI) {
  pi.on("tool_call", (event: ToolCallEvent, _ctx: ExtensionContext): ToolCallEventResult | void => {
    // Only intercept subagent_create calls
    if (event.toolName === "subagent_create") {
      const input = event.input as Record<string, unknown>;
      
      // Only inject model if not explicitly set by the user
      if (!input.model) {
        input.model = "deepseek-v4-flash";
      }
    }
    
    // Also intercept subagent_create_batch to inject model into each agent
    if (event.toolName === "subagent_create_batch") {
      const input = event.input as Record<string, unknown>;
      const agents = input.agents as Array<Record<string, unknown>> | undefined;
      if (agents) {
        for (const agent of agents) {
          if (!agent.model) {
            agent.model = "deepseek-v4-flash";
          }
        }
      }
    }
  });
}