import "../api/openrouter_client.dart";

const _advisorSystemPrompt =
    "You are an advisor reviewing an AI agent's work in progress. "
    "You will be shown the full conversation history including tool calls and results. "
    "Your job is to give concise, actionable guidance: identify mistakes, "
    "suggest better approaches, flag assumptions that need verifying, or confirm "
    "the agent is on the right track. Be direct and specific.";

const advisorToolDescription =
    "Call the advisor model for a second opinion on your current approach. "
    "Takes no parameters — your full conversation history is forwarded automatically. "
    "Call BEFORE committing to a significant approach, BEFORE declaring done, or when stuck.";

class AdvisorService {

  Future<String> run({
    required String advisorModel,
    required String apiKey,
    required List<Map<String, dynamic>> conversationSoFar,
    void Function(String toolName, Map<String, dynamic> input)? onToolCall,
    void Function(String toolName, String result)? onToolResult,
  }) async {
    onToolCall?.call("Advisor", {"model": advisorModel});

    OpenRouterClient? client;
    try {
      client = OpenRouterClient(
        config: OpenRouterConfig(apiKey: apiKey),
      );

      final response = await client.createMessage(
        model: advisorModel,
        maxTokens: 2048,
        messages: conversationSoFar,
        system: _advisorSystemPrompt,
      );

      final text = response.content
          .whereType<Map<String, dynamic>>()
          .where((b) => b["type"] == "text")
          .map((b) => b["text"] as String? ?? "")
          .join("\n")
          .trim();

      final result = text.isEmpty ? "Advisor returned no guidance." : text;
      onToolResult?.call("Advisor", result);
      return result;
    } catch (e) {
      final err = "Advisor call failed: $e";
      onToolResult?.call("Advisor", err);
      return err;
    } finally {
      client?.close();
    }
  }
}