import os
from .clip_encoder import CLIPVisionTower
from .openclip_encoder import OpenCLIPVisionTower


def build_vision_tower(vision_tower_cfg, **kwargs):
    vision_tower = getattr(vision_tower_cfg, 'mm_vision_tower', getattr(vision_tower_cfg, 'vision_tower', None))
    image_processor = getattr(vision_tower_cfg, 'image_processor', getattr(vision_tower_cfg, 'image_processor', "../processor/clip-patch14-224"))
    
    # if not os.path.exists(vision_tower):
    #     raise ValueError(f'Not find vision tower: {vision_tower}')

    if "openai" in vision_tower.lower() or "ShareGPT4V" in vision_tower:
        vision_tower = 'openai/clip-vit-large-patch14-336'
        # vision_tower = '/dataset/chengyaowang/official/MiniGemini/model_zoo/OpenAI/clip-vit-large-patch14-336'
        return CLIPVisionTower(vision_tower, args=vision_tower_cfg, **kwargs)
    else:
        raise ValueError(f'Unknown vision tower: {vision_tower}')


def build_vision_tower_aux(vision_tower_cfg, **kwargs):
    vision_tower_aux = getattr(vision_tower_cfg, 'mm_vision_tower_aux', getattr(vision_tower_cfg, 'vision_tower_aux', None))
    
    # if not os.path.exists(vision_tower_aux):
    #     raise ValueError(f'Not find vision tower: {vision_tower_aux}')

    if "openclip" in vision_tower_aux.lower():
        vision_tower_aux = './checkpoints/CLIP-convnext_large_d_320.laion2B-s29B-b131K-ft-soup'
        # vision_tower_aux = '/dataset/chengyaowang/official/MiniGemini/model_zoo/OpenAI/openclip-convnext-large-d-320-laion2B-s29B-b131K-ft-soup'
        return OpenCLIPVisionTower(vision_tower_aux, args=vision_tower_cfg, **kwargs)
    elif "openai" in vision_tower_aux.lower():
        return CLIPVisionTower(vision_tower_aux, args=vision_tower_cfg, **kwargs)
    else:
        raise ValueError(f'Unknown vision tower: {vision_tower_aux}')