/**
 * Notification Channels API — list and create channels.
 */

import { NextRequest, NextResponse } from 'next/server';
import { postgresClient } from '@/lib/services/postgres-client';

export async function GET() {
  try {
    const result = await postgresClient.query(
      `SELECT * FROM notification_channels ORDER BY name`
    );
    return NextResponse.json({ data: result.rows, total: result.rows.length });
  } catch (error) {
    const msg = error instanceof Error ? error.message : String(error);
    return NextResponse.json({ error: msg }, { status: 500 });
  }
}

export async function POST(request: NextRequest) {
  try {
    const body = await request.json();
    const { name, channel_type, config, is_active } = body;

    if (!name || !channel_type) {
      return NextResponse.json({ error: 'name and channel_type are required' }, { status: 400 });
    }

    const validTypes = ['teams', 'telegram', 'ntfy', 'webhook'];
    if (!validTypes.includes(channel_type)) {
      return NextResponse.json({ error: `channel_type must be one of: ${validTypes.join(', ')}` }, { status: 400 });
    }

    const result = await postgresClient.query(
      `INSERT INTO notification_channels (name, channel_type, config, is_active)
       VALUES ($1, $2, $3, $4)
       RETURNING *`,
      [name, channel_type, JSON.stringify(config || {}), is_active ?? true]
    );

    return NextResponse.json(result.rows[0], { status: 201 });
  } catch (error) {
    const msg = error instanceof Error ? error.message : String(error);
    return NextResponse.json({ error: msg }, { status: 500 });
  }
}