app.py

import tempfile
import logging
import os
import asyncio
from moviepy.editor import *
import edge_tts
import gradio as gr
from pydub import AudioSegment

# Configuración de Logs
logging.basicConfig(level=logging.INFO, format="%(asctime)s - %(levelname)s - %(message)s")

# CONSTANTES DE ARCHIVOS
INTRO_VIDEO = "introvideo.mp4"
OUTRO_VIDEO = "outrovideo.mp4"
MUSIC_BG = "musicafondo.mp3"
GLITCH_SOUND = "fxsound.mp3"
EJEMPLO_VIDEO = "ejemplo.mp4"

# Validar existencia de archivos
for file in [INTRO_VIDEO, OUTRO_VIDEO, MUSIC_BG, GLITCH_SOUND, EJEMPLO_VIDEO]:
    if not os.path.exists(file):
        logging.error(f"Falta archivo necesario: {file}")
        raise FileNotFoundError(f"Falta: {file}")

def eliminar_archivo_tiempo(ruta, delay=1800):
    def eliminar():
        try:
            if os.path.exists(ruta):
                os.remove(ruta)
                logging.info(f"Archivo eliminado: {ruta}")
        except Exception as e:
            logging.error(f"Error al eliminar {ruta}: {e}")
        finally:
            import gc
            gc.collect()
    from threading import Timer
    Timer(delay, eliminar).start()

async def procesar_audio(texto, voz, duracion_video, audio_original):
    temp_files = []
    try:
        if not texto.strip():
            raise ValueError("El texto para TTS no puede estar vacío.")

        def dividir_texto(texto, max_length=3000):
            return [texto[i:i + max_length] for i in range(0, len(texto), max_length)]

        fragmentos = dividir_texto(texto)
        audios_tts = []

        for fragmento in fragmentos:
            communicate = edge_tts.Communicate(fragmento, voz)
            with tempfile.NamedTemporaryFile(delete=False, suffix=".mp3") as tmp_tts:
                await communicate.save(tmp_tts.name)
                tts_audio = AudioFileClip(tmp_tts.name)
                temp_files.append(tmp_tts.name)
                audios_tts.append(tts_audio)

        tts_audio_final = concatenate_audioclips(audios_tts)

        if tts_audio_final.duration > duracion_video:
            tts_audio_final = tts_audio_final.subclip(0, duracion_video)

        needed_ms = int(duracion_video * 1000)
        bg_music = AudioSegment.from_mp3(MUSIC_BG)
        repeticiones = needed_ms // len(bg_music) + 1
        bg_music = bg_music * repeticiones
        bg_music = bg_music[:needed_ms].fade_out(1000)
        
        with tempfile.NamedTemporaryFile(delete=False, suffix=".mp3") as tmp_bg:
            bg_music.export(tmp_bg.name, format="mp3")
            bg_audio = AudioFileClip(tmp_bg.name).volumex(0.15)
            temp_files.append(tmp_bg.name)

        audios = [bg_audio.set_duration(duracion_video)]
        if audio_original:
            audios.append(audio_original.volumex(0.7))
        audios.append(tts_audio_final.volumex(0.85).set_start(0))
        
        audio_final = CompositeAudioClip(audios).set_duration(duracion_video)
        return audio_final
    
    except Exception as e:
        logging.error(f" fallo en audio: {str(e)}")
        raise
    finally:
        for file in temp_files:
            try:
                os.remove(file)
            except Exception as e:
                logging.warning(f"Error limpiando {file}: {e}")

async def procesar_video(video_input, texto_tts, voz_seleccionada):
    try:
        intro = VideoFileClip(INTRO_VIDEO, target_resolution=(1080, 1920))
        outro = VideoFileClip(OUTRO_VIDEO, target_resolution=(1080, 1920))
        video_original = VideoFileClip(video_input, target_resolution=(1080, 1920))
        audio_original = video_original.audio
        
        intro.reader.close()
        outro.reader.close()
        video_original.reader.close()

        duracion_video = video_original.duration
        
        audio_final = await procesar_audio(
            texto_tts,
            voz_seleccionada,
            duracion_video,
            audio_original
        )
        
        # Configuración de cortes dinámicos
        segment_duration = 18  # Duración real visible
        overlap = 2  # Segundos eliminados en cada corte
        total_segments = int((duracion_video - overlap) // (segment_duration)) + 1
        
        segments = []
        start_time = 0
        
        for _ in range(total_segments):
            end_time = start_time + segment_duration + overlap
            end_time = min(end_time, duracion_video)
            
            # Extraer segmento completo
            full_segment = video_original.subclip(start_time, end_time)
            
            # Cortar los primeros 0.5 segundos para transición
            if start_time > 0:
                transition = full_segment.subclip(0, 0.5).speedx(1.5)  # Efecto rápido
                main_segment = full_segment.subclip(0.5)
            else:
                transition = None
                main_segment = full_segment
            
            # Combinar transición y segmento principal
            if transition:
                combined = concatenate_videoclips([transition, main_segment], method="compose")
            else:
                combined = main_segment
                
            segments.append(combined)
            start_time += segment_duration  # Avanzar sin los 2 segundos de overlap

        video_final = concatenate_videoclips(segments, method="compose")
        video_con_audio = video_final.set_audio(audio_final)
        
        # Recargar intro/outro
        intro = VideoFileClip(INTRO_VIDEO, target_resolution=(1080, 1920))
        outro = VideoFileClip(OUTRO_VIDEO, target_resolution=(1080, 1920))
        video_final = concatenate_videoclips([intro, video_con_audio, outro], method="compose")
        
        with tempfile.NamedTemporaryFile(suffix=".mp4", delete=False) as tmp:
            video_final.write_videofile(
                tmp.name,
                codec="libx264",
                audio_codec="aac",
                fps=video_original.fps,
                threads=4,
                bitrate="5M",
                ffmpeg_params=[
                    "-preset", "ultrafast",
                    "-crf", "23",
                    "-movflags", "+faststart",
                    "-vf", "scale=1920:1080"
                ],
                verbose=False
            )
            eliminar_archivo_tiempo(tmp.name, 1800)
            return tmp.name
            
    except Exception as e:
        logging.error(f" fallo general: {str(e)}")
        raise
    finally:
        try:
            intro.close()
            outro.close()
            video_original.close()
        except:
            pass

# Interfaz Gradio
with gr.Blocks() as demo:
    gr.Markdown("# Editor de Video con IA")
    
    with gr.Tab("Principal"):
        video_input = gr.Video(label="Subir video")
        texto_tts = gr.Textbox(
            label="Texto para TTS",
            lines=3,
            placeholder="Escribe aquí tu texto..."
        )
        voz_seleccionada = gr.Dropdown(
            label="Voz",
            choices=["es-ES-AlvaroNeural", "es-MX-BeatrizNeural"],
            value="es-ES-AlvaroNeural"
        )
        procesar_btn = gr.Button("Generar Video")
        video_output = gr.Video(label="Video Procesado")
    
    with gr.Accordion("Ejemplos de Uso", open=False):
        gr.Examples(
            examples=[[EJEMPLO_VIDEO, "¡Hola! Esto es una prueba. Suscríbete al canal."]],
            inputs=[video_input, texto_tts],
            label="Ejemplos"
        )

    procesar_btn.click(
        procesar_video,
        inputs=[video_input, texto_tts, voz_seleccionada],
        outputs=video_output
    )

if __name__ == "__main__":
    demo.queue().launch()