<?php

namespace Modules\Api\Http\Controllers;

use Illuminate\Routing\Controller;
use Illuminate\Http\Request as HttpRequest;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Facades\Validator;
use Modules\Api\Traits\RespondTrait;
use Modules\Platform\Core\Helper\CompanySettings;
use Modules\Reporting\Entities\DialerCalls;

/**
 * Call Through API Controller
 *
 * POST /api/calls/initiate
 *   Headers:
 *     Authorization: Bearer {jwt_token}   ← POST /api/login to get token
 *     Content-Type: application/json
 *   Body (JSON):
 *     - number  : string  (required) destination phone number
 *     - voice   : array   (required) [{ "key": 1, "value": "https://..." }, ...]
 *     - orderid : string  (optional) external order reference (nullable)
 *
 * DID and webhook URL are configured in Settings → Dialer Settings.
 */
class CallThroughApiController extends Controller
{
    use RespondTrait;

    /**
     * Initiate an outgoing call that plays the supplied audio to the recipient.
     */
    public function initiate(HttpRequest $request)
    {
        Log::info('CallThroughApi@initiate: request received', [
            'ip'     => $request->ip(),
            'number' => $request->input('number'),
            'orderid' => $request->input('orderid'),
        ]);

        $user = Auth::user();
        if (!$user) {
            Log::warning('CallThroughApi@initiate: unauthenticated');
            return response()->json(['status' => 'error', 'message' => 'Unauthorized'], 401);
        }

        Log::info('CallThroughApi@initiate: authenticated as user#' . $user->id);

        // ── Permission check ──────────────────────────────────────────────────
        if (!$user->hasPermissionTo('calls.through.api')) {
            Log::warning('CallThroughApi@initiate: user#' . $user->id . ' lacks calls.through.api permission');
            return response()->json(['status' => 'error', 'message' => 'Unauthorized'], 403);
        }

        // ── Validation ────────────────────────────────────────────────────────
        $validator = Validator::make($request->all(), [
            'number'          => 'required|string',
            'voice'           => 'required|array|min:1',
            'voice.*.key'     => 'required|integer',
            'voice.*.value'   => 'required|string|url',
            'orderid'         => 'nullable|string',
        ]);

        if ($validator->fails()) {
            Log::warning('CallThroughApi@initiate: validation failed', [
                'errors' => $validator->errors()->toArray(),
            ]);
            return response()->json([
                'status'  => 'error',
                'message' => 'Validation failed',
                'errors'  => $validator->errors(),
            ], 422);
        }

        // ── Resolve DID from company settings ─────────────────────────────────
        $did = CompanySettings::get('api_did')?? '0020221282797';  // Default DID if not configured
        if (!$did) {
            Log::error('CallThroughApi@initiate: api_did not configured in dialer settings');
            return response()->json([
                'status'  => 'error',
                'message' => 'Outgoing DID is not configured. Please set it in Settings → Dialer Settings.',
            ], 500);
        }
        Log::info('CallThroughApi@initiate: using DID=' . $did);

        // Warn if webhook not configured (non-fatal — call still proceeds)
        if (!CompanySettings::get('api_webhook_url')) {
            Log::warning('CallThroughApi@initiate: api_webhook_url is not configured — results will not be posted');
        }

        // ── Create DialerCalls record ─────────────────────────────────────────
        $dialer_call = new DialerCalls();
        $dialer_call->number               = $request->input('number');
        $dialer_call->orderid              = $request->input('orderid');       // nullable
        $dialer_call->communication_method = 'call';
        $dialer_call->voices               = json_encode($request->input('voice'));
        $dialer_call->did                  = $did;
        $dialer_call->order_status         = 'New';
        $dialer_call->save();

        Log::info('CallThroughApi@initiate: DialerCalls record created', [
            'id'     => $dialer_call->id,
            'number' => $dialer_call->number,
            'did'    => $dialer_call->did,
        ]);

        // ── Fire one:shoot in background ──────────────────────────────────────
        exec("/var/www/ccsystem/artisan one:shoot {$dialer_call->id} > /dev/null 2>&1 &");

        Log::info('CallThroughApi@initiate: one:shoot dispatched', [
            'dialer_call_id' => $dialer_call->id,
        ]);

        return response()->json([
            'status'  => 'success',
            'message' => 'Call initiated successfully',
            'data'    => [
                'call_id' => $dialer_call->id,
                'orderid' => $dialer_call->orderid,
                'number'  => $dialer_call->number,
            ],
        ], 200);
    }

    /**
     * Handle webhook callbacks from the dialer system.
     *
     * This endpoint is called by the dialer system to report call status updates.
     * It expects a JSON payload with the following fields:
     *   - call_id : integer  (required) ID of the DialerCalls record
     *   - status  : string   (required) Call status (e.g., "completed", "failed")
     *   - details : string   (optional) Additional details about the call
     */
    public function webhook(HttpRequest $request)
    {
        Log::info('CallThroughApi@webhook: request received', [
            'ip'      => $request->ip(),
            'payload' => $request->all(),
        ]);

        return response()->json(['status' => 'received'], 200);
    }
}