import os 
import sys
import subprocess
import urllib.request
import shutil

def init_ezvtb_rt(search_dir = '.'):
    if not os.path.exists(ezvtb_path) and not os.path.exists(ezvtb_main_path): #Check if rt not exist
        zip_path = 'https://github.com/zpeng11/ezvtuber-rt/archive/refs/heads/main.zip'
        filehandle, _ = urllib.request.urlretrieve(zip_path)
        os.rename(filehandle, filehandle + '.zip')
        shutil.unpack_archive(filehandle + '.zip' , '.')

dir_path = os.path.dirname(os.path.realpath(__file__))
ezvtb_path = os.path.join(dir_path, 'ezvtuber-rt')
ezvtb_main_path = os.path.join(dir_path, 'ezvtuber-rt-main')

project_path = ''
if os.path.exists(ezvtb_path):
    project_path = ezvtb_path
else:
    project_path = ezvtb_main_path

if project_path not in sys.path:
    sys.path.append(project_path)

def get_core(
        #Device setting
        device_id:int = 0, 
        use_tensorrt:bool = True, 
        #THA3 model setting
        model_seperable:bool = True,
        model_half:bool = True, #If using directml+half, there is small numerical error on Nvidia, and huge numerical error on AMD
        model_cache:bool = True,#Only works for tensorrt
        model_vram_cache:bool = True, #Only works for tensorrt
        model_cache_size:float = 1.0, #unit of GigaBytes, only works for tensorrt
        model_use_eyebrow:bool = True,
        #RIFE interpolation setting
        use_interpolation:bool = True,
        interpolation_scale:int = 2,
        interpolation_half:bool = True, #If using directml+half, there is small numerical error on Nvidia, and huge numerical error on AMD
        #Cacher setting
        use_cacher:bool = True,
        cacher_quality:int = 85,
        cacher_ram_size:float = 2.0,#unit of GigaBytes
        #SR setting
        use_sr:bool = False,
        sr_x4:bool = True,
        sr_half:bool = True,
        sr_noise:int = 1
        ):
    support_trt = False
    if use_tensorrt: #Verify tensorrt
        print('Verifying TensorRT')
        try:
            from ezvtb_rt.trt_utils import cudaSetDevice, check_build_all_models
            cudaSetDevice(device_id)
            # check_build_all_models()
            support_trt = True
        except:
            support_trt = False
    if support_trt == False and use_tensorrt == True:
        print('TensorRT option selected but not supported')
        use_tensorrt = False

    if use_tensorrt:
        os.environ['CUDA_DEVICE'] = str(device_id)
        import pycuda.autoinit
        print(f'Using devcie {pycuda.autoinit.device.name()}')

    tha_model_dir = os.path.join('.','data', 'models', 'tha3',
                                 'seperable' if model_seperable else 'standard', 
                                 'fp16' if model_half else 'fp32')
    rife_model_path = ''
    if use_interpolation:
        rife_model_path = os.path.join('.','data', 'models','rife_512',
                                       f'x{interpolation_scale}', 'fp16' if interpolation_half else 'fp32')
        
    sr_model_path = ''
    if use_sr:
        if sr_x4:
            if sr_half:
                sr_model_path = os.path.join('.','data', 'models', 'Real-ESRGAN', 'exported_256_fp16')
            else:
                sr_model_path = os.path.join('.','data', 'models', 'Real-ESRGAN', 'exported_256')
        else: #x2
            if sr_half:
                sr_model_path = os.path.join('.','data', 'models', 'waifu2x_upconv', 'fp16', 'upconv_7', 'art', f'noise{sr_noise}_scale2x')
            else:
                sr_model_path = os.path.join('.','data', 'models', 'waifu2x_upconv', 'fp32', 'upconv_7', 'art', f'noise{sr_noise}_scale2x')

    print(f'THA3 Path:{tha_model_dir}')
    print(f'RIFE Path:{rife_model_path}')
    print(f'SR Path:{sr_model_path}')

    cacher = None
    if use_cacher: #Cacher runs on cpu therefore platform independant
        from ezvtb_rt.cache import Cacher
        cacher = Cacher(max_size = cacher_ram_size, cache_quality = cacher_quality, image_size=512)
    
    core = None
    if use_tensorrt:
        tha = None
        if not model_cache:
            from ezvtb_rt.tha import THACoreSimple
            tha = THACoreSimple(tha_model_dir)
        else:
            if model_vram_cache:
                from ezvtb_rt.tha import THACoreCachedVRAM
                tha = THACoreCachedVRAM(tha_model_dir, model_cache_size, model_use_eyebrow)
            else:
                from ezvtb_rt.tha import THACoreCachedRAM
                tha = THACoreCachedRAM(tha_model_dir, model_cache_size, model_use_eyebrow)
        rife = None
        if use_interpolation:
            from ezvtb_rt.rife import RIFECoreLinked
            rife = RIFECoreLinked(rife_model_path, tha)
        sr = None
        if use_sr:
            from ezvtb_rt.sr import SRLinkTha
            sr = SRLinkTha(sr_model_path, tha)
        from ezvtb_rt.core import Core
        core = Core(tha, cacher, sr, rife)
    else: #Use directml
        from ezvtb_rt.core_ort import CoreORT
        core = CoreORT(tha_model_dir, rife_path = rife_model_path if len(rife_model_path) > 0 else None, sr_path = sr_model_path if len(sr_model_path) > 0 else None, cacher=cacher, device_id=device_id, use_eyebrow = model_use_eyebrow)

    return core
    
if __name__ == '__main__':
    init_ezvtb_rt()
    from ezvtb_rt.trt_utils import check_build_all_models
    try:
        check_build_all_models('./data/models')
    except:
        pass