"""
Multi-Speech Processor for F5-TTS Thai
จัดการการประมวลผล multi-speech และ segment editing
"""

import tempfile
import numpy as np
import gradio as gr
import soundfile as sf
from collections import OrderedDict

from f5_tts.infer.infer_gradio import parse_speechtypes_text, infer
from f5_tts.cleantext.number_tha import replace_numbers_with_thai
from f5_tts.cleantext.th_repeat import process_thai_repeat

from f5_tts.config import MAX_SEGMENTS


class MultiSpeechProcessor:
    """จัดการการประมวลผล Multi-Speech และ Segment Editing"""
    
    def __init__(self, model_manager):
        self.model_manager = model_manager
    
    def generate_multistyle_speech(self,
                                   gen_text,
                                   cross_fade_duration,
                                   nfe_step,
                                   speech_types_data,
                                   remove_silence,
                                   silence_inputs):
        """สร้างเสียงหลายสไตล์"""
        
        # จัดระเบียบข้อมูล speech types
        speech_types = self._organize_speech_types(speech_types_data)
        
        # แยก segments จากข้อความ
        segments = parse_speechtypes_text(gen_text)
        
        # สร้างเสียงสำหรับแต่ละ segment
        generated_audio_segments = []
        segment_infos = []
        current_style = "Regular"
        
        for idx, segment in enumerate(segments):
            style = segment["style"]
            text = segment["text"]
            
            # เลือก style
            if style in speech_types:
                current_style = style
            else:
                gr.Warning(f"ไม่พบสไตล์ {style} จะใช้สไตล์ Regular แทน")
                current_style = "Regular"
            
            # ตรวจสอบ reference audio
            try:
                ref_audio = speech_types[current_style]["audio"]
            except KeyError:
                gr.Warning(f"กรุณาใส่เสียงต้นฉบับสำหรับสไตล์ {current_style}")
                return self._empty_output()
            
            ref_text = speech_types[current_style].get("ref_text", "")
            
            # ประมวลผลข้อความ
            ms_cleaned_text = process_thai_repeat(replace_numbers_with_thai(text))
            
            # สร้างเสียง
            audio_out, _, ref_text_out = infer(
                ref_audio, 
                ref_text, 
                ms_cleaned_text, 
                self.model_manager.get_model(), 
                self.model_manager.get_vocoder(), 
                remove_silence, 
                cross_fade_duration=cross_fade_duration, 
                nfe_step=nfe_step, 
                show_info=print
            )
            
            sr, audio_data = audio_out
            
            # เพิ่ม silence
            audio_data = self._add_silence(audio_data, sr, silence_inputs, idx)
            
            generated_audio_segments.append(audio_data)
            segment_infos.append({
                "index": idx,
                "style": style,
                "text": text,
                "ref_audio": ref_audio,
                "ref_text": ref_text,
                "audio_data": audio_data,
                "sr": sr,
                "silence_ms": self._get_silence_value(silence_inputs, idx)
            })
            
            # อัปเดต ref_text
            speech_types[current_style]["ref_text"] = ref_text_out
        
        if generated_audio_segments:
            return self._combine_segments(generated_audio_segments, segment_infos, sr)
        else:
            gr.Warning("ไม่สามารถสร้างเสียงได้")
            return self._empty_output()
    
    def update_silence_all(self, silence_inputs, segments, sr):
        """อัปเดต silence ของทุก segment"""
        if not segments or len(segments) == 0:
            return self._empty_segment_output() + [None, None, segments, sr]
        
        # อัปเดต silence ของแต่ละ segment
        for idx, seg in enumerate(segments):
            audio_data = seg["audio_data"]
            old_silence_ms = seg.get("silence_ms", 0)
            old_silence_samples = int((old_silence_ms / 1000.0) * seg["sr"])
            
            # ตัด silence เดิมออก
            if old_silence_samples > 0 and len(audio_data) > old_silence_samples:
                audio_data = audio_data[:-old_silence_samples]
            
            # เติม silence ใหม่
            silence_ms = self._get_silence_value(silence_inputs, idx)
            seg["silence_ms"] = silence_ms
            silence_samples = int((silence_ms / 1000.0) * seg["sr"])
            
            if silence_samples > 0:
                seg["audio_data"] = np.concatenate([audio_data, np.zeros(silence_samples, dtype=audio_data.dtype)])
            else:
                seg["audio_data"] = audio_data
        
        # ต่อเสียงใหม่
        final_audio_data = np.concatenate([s["audio_data"] for s in segments])
        download_path = self._save_audio(final_audio_data, sr)
        
        return self._prepare_segment_outputs(segments) + [(sr, final_audio_data), download_path, segments, sr]
    
    def regenerate_segment(self, idx, new_text, silence_ms, segments, cross_fade_duration, nfe_step):
        """สร้าง segment ใหม่"""
        if not segments or idx >= len(segments):
            return self._empty_segment_output() + [None, None, segments, 24000]
        
        seg = segments[idx]
        
        # ใช้ข้อความใหม่
        ms_cleaned_text = process_thai_repeat(replace_numbers_with_thai(new_text))
        
        # สร้างเสียงใหม่
        audio_out, _, _ = infer(
            seg["ref_audio"], 
            seg["ref_text"], 
            ms_cleaned_text, 
            self.model_manager.get_model(), 
            self.model_manager.get_vocoder(), 
            True, 
            cross_fade_duration=cross_fade_duration, 
            nfe_step=nfe_step, 
            show_info=print
        )
        
        sr, audio_data = audio_out
        
        # เพิ่ม silence
        try:
            silence_ms = float(silence_ms)
        except Exception:
            silence_ms = 0
        
        silence_samples = int((silence_ms / 1000.0) * sr)
        if silence_samples > 0:
            audio_data = np.concatenate([audio_data, np.zeros(silence_samples, dtype=audio_data.dtype)])
        
        # อัปเดต segment
        segments[idx]["audio_data"] = audio_data
        segments[idx]["sr"] = sr
        segments[idx]["text"] = new_text
        segments[idx]["silence_ms"] = silence_ms
        
        # ต่อเสียงใหม่
        final_audio_data = np.concatenate([s["audio_data"] for s in segments])
        download_path = self._save_audio(final_audio_data, sr)
        
        return self._prepare_segment_outputs(segments) + [(sr, final_audio_data), download_path, segments, sr]
    
    def validate_speech_types(self, gen_text, speech_type_names):
        """ตรวจสอบ speech types ที่จำเป็น"""
        speech_types_available = set(name for name in speech_type_names if name)
        segments = parse_speechtypes_text(gen_text)
        speech_types_in_text = set(segment["style"] for segment in segments)
        missing_speech_types = speech_types_in_text - speech_types_available
        
        return gr.update(interactive=len(missing_speech_types) == 0)
    
    def _organize_speech_types(self, speech_types_data):
        """จัดระเบียบข้อมูล speech types"""
        max_speech_types = len(speech_types_data) // 3
        speech_type_names_list = speech_types_data[:max_speech_types]
        speech_type_audios_list = speech_types_data[max_speech_types:2 * max_speech_types]
        speech_type_ref_texts_list = speech_types_data[2 * max_speech_types:3 * max_speech_types]
        
        speech_types = OrderedDict()
        ref_text_idx = 0
        
        for name_input, audio_input, ref_text_input in zip(
            speech_type_names_list, speech_type_audios_list, speech_type_ref_texts_list
        ):
            if name_input and audio_input:
                speech_types[name_input] = {"audio": audio_input, "ref_text": ref_text_input}
            else:
                speech_types[f"@{ref_text_idx}@"] = {"audio": "", "ref_text": ""}
            ref_text_idx += 1
        
        return speech_types
    
    def _add_silence(self, audio_data, sr, silence_inputs, idx):
        """เพิ่ม silence ให้ audio"""
        silence_ms = self._get_silence_value(silence_inputs, idx)
        silence_samples = int((silence_ms / 1000.0) * sr)
        
        if silence_samples > 0:
            return np.concatenate([audio_data, np.zeros(silence_samples, dtype=audio_data.dtype)])
        return audio_data
    
    def _get_silence_value(self, silence_inputs, idx):
        """ดึงค่า silence สำหรับ index ที่กำหนด"""
        if idx < len(silence_inputs) and silence_inputs[idx] is not None:
            try:
                return float(silence_inputs[idx])
            except Exception:
                return 0
        return 0
    
    def _save_audio(self, audio_data, sr):
        """บันทึกไฟล์เสียง"""
        with tempfile.NamedTemporaryFile(suffix=".wav", delete=False) as tmp_audio:
            sf.write(tmp_audio.name, audio_data, sr)
            return tmp_audio.name
    
    def _combine_segments(self, generated_audio_segments, segment_infos, sr):
        """รวม segments เข้าด้วยกัน"""
        final_audio_data = np.concatenate(generated_audio_segments)
        download_path = self._save_audio(final_audio_data, sr)
        
        return (
            (sr, final_audio_data), 
            download_path, 
            *self._prepare_segment_outputs(segment_infos), 
            segment_infos, 
            sr
        )
    
    def _prepare_segment_outputs(self, segments):
        """เตรียม output สำหรับ segment players"""
        segment_outputs = [gr.update(visible=False, value=None) for _ in range(MAX_SEGMENTS)]
        segment_texts = [gr.update(visible=False, value="") for _ in range(MAX_SEGMENTS)]
        segment_silences = [gr.update(visible=False, value=0) for _ in range(MAX_SEGMENTS)]
        segment_btn_vis = [gr.update(visible=False) for _ in range(MAX_SEGMENTS)]
        
        for i, seg in enumerate(segments):
            if i < MAX_SEGMENTS:
                segment_outputs[i] = gr.update(value=(seg["sr"], seg["audio_data"]), visible=True)
                segment_texts[i] = gr.update(value=seg["text"], visible=True)
                segment_silences[i] = gr.update(value=seg["silence_ms"], visible=True)
                segment_btn_vis[i] = gr.update(visible=True)
        
        return segment_outputs + segment_texts + segment_silences + segment_btn_vis
    
    def _empty_output(self):
        """ส่งคืน empty output"""
        empty_segments = [gr.update(visible=False, value=None) for _ in range(MAX_SEGMENTS)]
        empty_texts = [gr.update(visible=False, value="") for _ in range(MAX_SEGMENTS)]
        empty_silences = [gr.update(visible=False, value=0) for _ in range(MAX_SEGMENTS)]
        empty_btns = [gr.update(visible=False) for _ in range(MAX_SEGMENTS)]
        
        return (
            None, None, 
            *empty_segments, *empty_texts, *empty_silences, *empty_btns, 
            [], 24000
        )
    
    def _empty_segment_output(self):
        """ส่งคืน empty segment output"""
        empty_segments = [gr.update(visible=False, value=None) for _ in range(MAX_SEGMENTS)]
        empty_texts = [gr.update(visible=False, value="") for _ in range(MAX_SEGMENTS)]
        empty_silences = [gr.update(visible=False, value=0) for _ in range(MAX_SEGMENTS)]
        empty_btns = [gr.update(visible=False) for _ in range(MAX_SEGMENTS)]
        
        return empty_segments + empty_texts + empty_silences + empty_btns