<?php

namespace App\Services\AI\VoiceAnalysis;

use App\Models\AiVoiceProvider;

/**
 * No network, no key, deterministic output. It exists so the queue, the
 * analysis row, the buttons and the analysis page can be exercised end to end
 * before anyone supplies a vendor key — and so a key-less install can prove the
 * wiring still works after an upgrade.
 */
class MockDriver extends AbstractDriver
{
    public function driver(): string
    {
        return 'mock';
    }

    public function test(AiVoiceProvider $provider): array
    {
        return ['ok' => true, 'message' => 'Mock provider: no external call is made.'];
    }

    public function analyse(AiVoiceProvider $provider, array $chunks, array $context): array
    {
        $linkedid = (string) ($context['linkedid'] ?? 'unknown');
        $direction = (string) ($context['direction'] ?? 'call');
        $bytes = 0;

        foreach ($chunks as $chunk) {
            $bytes += (int) @filesize($chunk);
        }

        $transcript = "Speaker A: This is a mock transcription for {$direction} call {$linkedid}. "
            ."No audio was sent to any provider.\n"
            .'Speaker B: Understood. The recording was prepared and the job ran through the full pipeline.';

        $summary = "Mock summary for {$direction} call {$linkedid}: the analysis pipeline ran end to end "
            .'without contacting a provider. Audio prepared: ' . count($chunks) . ' chunk(s), ' . $bytes . ' bytes. '
            .'Select a real provider on the AI Voice Analysis settings page and save its API key to replace this text.';

        return [
            'transcript' => $transcript,
            'summary'    => $summary,
            'meta'       => ['driver' => 'mock', 'chunks' => count($chunks)],
        ];
    }
}