From bd93ef20293ca5139a21d3683644393cd88f3893 Mon Sep 17 00:00:00 2001
From: Lizandro <lizandrogd@gmail.com>
Date: Wed, 15 Jul 2026 17:47:07 +0000
Subject: [PATCH] debug: show raw Gemini vision response in Telegram when JSON
 parse fails

---
 app/Services/GeminiVisionService.php | 17 ++++++++++++++---
 app/Services/TelegramBotService.php  |  7 ++++++-
 2 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/app/Services/GeminiVisionService.php b/app/Services/GeminiVisionService.php
index 50b2754..09e3835 100644
--- a/app/Services/GeminiVisionService.php
+++ b/app/Services/GeminiVisionService.php
@@ -76,8 +76,14 @@ class GeminiVisionService
 
         $inputTokens  = $response->json('usageMetadata.promptTokenCount', 0);
         $outputTokens = $response->json('usageMetadata.candidatesTokenCount', 0);
-        $text         = $response->json('candidates.0.content.parts.0.text', '');
-        $resultado    = $this->parseRespuesta($text);
+
+        // Collect text from ALL parts (newer models may put JSON in parts[1] if thinking is in parts[0])
+        $parts = $response->json('candidates.0.content.parts', []);
+        $text  = implode("\n", array_column(array_filter($parts, fn($p) => isset($p['text'])), 'text'));
+
+        Log::info('[Gemini Vision] raw response: ' . substr($text, 0, 500));
+
+        $resultado = $this->parseRespuesta($text);
 
         AiUsageLog::registrar([
             'servicio'      => 'gemini_vision',
@@ -89,9 +95,14 @@ class GeminiVisionService
             'resultado'     => $resultado ? 'ok' : 'error',
             'detalle'       => $resultado
                 ? ['banco' => $resultado['banco'], 'valor' => $resultado['valor']]
-                : ['raw' => substr($text, 0, 200), 'modelo' => $this->model],
+                : ['raw' => substr($text, 0, 400), 'modelo' => $this->model],
         ]);
 
+        // If parse failed, return debug info so caller can show it
+        if (! $resultado) {
+            return ['__parse_error' => substr($text, 0, 300)];
+        }
+
         return $resultado;
     }
 
diff --git a/app/Services/TelegramBotService.php b/app/Services/TelegramBotService.php
index 2b6b1ad..9692887 100644
--- a/app/Services/TelegramBotService.php
+++ b/app/Services/TelegramBotService.php
@@ -188,7 +188,12 @@ class TelegramBotService
             }
 
             if (isset($datosPago['__error'])) {
-                $this->send($chatId, "⚠️ Error al analizar el comprobante:\n`" . $datosPago['__error'] . "`");
+                $this->send($chatId, "⚠️ Error de API:\n`" . $datosPago['__error'] . "`");
+                return;
+            }
+
+            if (isset($datosPago['__parse_error'])) {
+                $this->send($chatId, "⚠️ Gemini respondió pero no es JSON válido:\n`" . $datosPago['__parse_error'] . "`");
                 return;
             }