import ffmpeg
import tempfile
import os
import subprocess
import urllib.request
import tarfile

class Tts:
    def __init__(self, config):
        self.piper_directory = ""
        self.install(config["service_directory"])

    def tts(self, text):
        
        with tempfile.NamedTemporaryFile(suffix=".wav", delete=False) as temp_file:
            output_file = temp_file.name
            piper_dir = self.piper_directory
            subprocess.run([
                os.path.join(piper_dir, 'piper'),
                '--model', os.path.join(piper_dir, os.getenv('PIPER_VOICE_NAME', 'en_US-lessac-medium.onnx')),
                '--output_file', output_file
            ], input=text, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True)

            # TODO: hack to format audio correctly for device
            outfile = tempfile.gettempdir() + "/" + "raw.dat"
            ffmpeg.input(temp_file.name).output(outfile, f="s16le", ar="16000", ac="1", loglevel='panic').run()

            return outfile

    def install(self, service_directory):
        PIPER_FOLDER_PATH = service_directory
        self.piper_directory = os.path.join(PIPER_FOLDER_PATH, 'piper')
        if not os.path.isdir(self.piper_directory): # Check if the Piper directory exists
            os.makedirs(PIPER_FOLDER_PATH, exist_ok=True)

            # Determine OS and architecture
            OS = os.uname().sysname
            ARCH = os.uname().machine
            if OS == "Darwin":
                OS = "macos"
                if ARCH == "arm64":
                    ARCH = "aarch64"
                elif ARCH == "x86_64":
                    ARCH = "x64"
                else:
                    print("Piper: unsupported architecture")
                    return

            PIPER_ASSETNAME = f"piper_{OS}_{ARCH}.tar.gz"
            PIPER_URL = "https://github.com/rhasspy/piper/releases/latest/download/"

            # Download and extract Piper
            urllib.request.urlretrieve(f"{PIPER_URL}{PIPER_ASSETNAME}", os.path.join(PIPER_FOLDER_PATH, PIPER_ASSETNAME))
            with tarfile.open(os.path.join(PIPER_FOLDER_PATH, PIPER_ASSETNAME), 'r:gz') as tar:
                tar.extractall(path=PIPER_FOLDER_PATH)

            PIPER_VOICE_URL = os.getenv('PIPER_VOICE_URL', 'https://huggingface.co/rhasspy/piper-voices/resolve/main/en/en_US/lessac/medium/')
            PIPER_VOICE_NAME = os.getenv('PIPER_VOICE_NAME', 'en_US-lessac-medium.onnx')

            # Download voice model and its json file
            urllib.request.urlretrieve(f"{PIPER_VOICE_URL}{PIPER_VOICE_NAME}", os.path.join(self.piper_directory, PIPER_VOICE_NAME))
            urllib.request.urlretrieve(f"{PIPER_VOICE_URL}{PIPER_VOICE_NAME}.json", os.path.join(self.piper_directory, f"{PIPER_VOICE_NAME}.json"))

            # Additional setup for macOS
            if OS == "macos":
                if ARCH == "x64":
                    subprocess.run(['softwareupdate', '--install-rosetta', '--agree-to-license'])

                PIPER_PHONEMIZE_ASSETNAME = f"piper-phonemize_{OS}_{ARCH}.tar.gz"
                PIPER_PHONEMIZE_URL = "https://github.com/rhasspy/piper-phonemize/releases/latest/download/"
                urllib.request.urlretrieve(f"{PIPER_PHONEMIZE_URL}{PIPER_PHONEMIZE_ASSETNAME}", os.path.join(self.piper_directory, PIPER_PHONEMIZE_ASSETNAME))

                with tarfile.open(os.path.join(self.piper_directory, PIPER_PHONEMIZE_ASSETNAME), 'r:gz') as tar:
                    tar.extractall(path=self.piper_directory)

                PIPER_DIR = self.piper_directory
                subprocess.run(['install_name_tool', '-change', '@rpath/libespeak-ng.1.dylib', f"{PIPER_DIR}/piper-phonemize/lib/libespeak-ng.1.dylib", f"{PIPER_DIR}/piper"])
                subprocess.run(['install_name_tool', '-change', '@rpath/libonnxruntime.1.14.1.dylib', f"{PIPER_DIR}/piper-phonemize/lib/libonnxruntime.1.14.1.dylib", f"{PIPER_DIR}/piper"])
                subprocess.run(['install_name_tool', '-change', '@rpath/libpiper_phonemize.1.dylib', f"{PIPER_DIR}/piper-phonemize/lib/libpiper_phonemize.1.dylib", f"{PIPER_DIR}/piper"])

            print("Piper setup completed.")
        else:
            print("Piper already set up. Skipping download.")
