import { NextResponse } from "next/server";
import { getSettings, updateSettings } from "@/lib/localDb";
import { applyOutboundProxyEnv } from "@/lib/network/outboundProxy";
import { resetComboRotation } from "open-sse/services/combo.js";
import bcrypt from "bcryptjs";

export async function GET() {
  try {
    const settings = await getSettings();
    const { password, ...safeSettings } = settings;
    
    const enableRequestLogs = process.env.ENABLE_REQUEST_LOGS === "true";
    const enableTranslator = process.env.ENABLE_TRANSLATOR === "true";
    
    return NextResponse.json({ 
      ...safeSettings, 
      enableRequestLogs,
      enableTranslator,
      hasPassword: !!password
    });
  } catch (error) {
    console.log("Error getting settings:", error);
    return NextResponse.json({ error: error.message }, { status: 500 });
  }
}

export async function PATCH(request) {
  try {
    const body = await request.json();

    // If updating password, hash it
    if (body.newPassword) {
      const settings = await getSettings();
      const currentHash = settings.password;

      // Verify current password if it exists
      if (currentHash) {
        if (!body.currentPassword) {
          return NextResponse.json({ error: "Current password required" }, { status: 400 });
        }
        const isValid = await bcrypt.compare(body.currentPassword, currentHash);
        if (!isValid) {
          return NextResponse.json({ error: "Invalid current password" }, { status: 401 });
        }
      } else {
        // First time setting password, no current password needed
        // Allow empty currentPassword or default "123456"
        if (body.currentPassword && body.currentPassword !== "123456") {
           return NextResponse.json({ error: "Invalid current password" }, { status: 401 });
        }
      }

      const salt = await bcrypt.genSalt(10);
      body.password = await bcrypt.hash(body.newPassword, salt);
      delete body.newPassword;
      delete body.currentPassword;
    }

    const settings = await updateSettings(body);

    // Apply outbound proxy settings immediately (no restart required)
    if (
      Object.prototype.hasOwnProperty.call(body, "outboundProxyEnabled") ||
      Object.prototype.hasOwnProperty.call(body, "outboundProxyUrl") ||
      Object.prototype.hasOwnProperty.call(body, "outboundNoProxy")
    ) {
      applyOutboundProxyEnv(settings);
    }

    // Invalidate combo rotation state when strategy settings change
    if (
      Object.prototype.hasOwnProperty.call(body, "comboStrategy") ||
      Object.prototype.hasOwnProperty.call(body, "comboStickyRoundRobinLimit") ||
      Object.prototype.hasOwnProperty.call(body, "comboStrategies")
    ) {
      resetComboRotation();
    }

    const { password, ...safeSettings } = settings;
    return NextResponse.json(safeSettings);
  } catch (error) {
    console.log("Error updating settings:", error);
    return NextResponse.json({ error: error.message }, { status: 500 });
  }
}
