from __future__ import annotations

import json
import random
import requests
from urllib.parse import quote
from typing import Optional
from aiohttp import ClientSession

from ..requests.raise_for_status import raise_for_status
from ..typing import AsyncResult, Messages
from ..image import ImageResponse
from .needs_auth.OpenaiAPI import OpenaiAPI

class PollinationsAI(OpenaiAPI):
    label = "Pollinations AI"
    url = "https://pollinations.ai"
    
    working = True
    needs_auth = True
    supports_stream = True
    supports_system_message = True
    supports_message_history = True
    
    # API endpoints base
    api_base = "https://text.pollinations.ai/openai"
    
    # API endpoints
    text_api_endpoint = "https://text.pollinations.ai"
    image_api_endpoint = "https://image.pollinations.ai"
    
    # Models configuration
    default_model = "openai"
    default_image_model = "flux"
    
    image_models = []
    models = []
    
    additional_models_image = ["midjourney", "dall-e-3"]
    additional_models_text = ["sur", "sur-mistral", "claude"]
    model_aliases = {
        "gpt-4o": "openai",
        "mistral-nemo": "mistral",
        "llama-3.1-70b": "llama",
        "gpt-4": "searchgpt",
        "gpt-4": "claude",
        "qwen-2.5-coder-32b": "qwen-coder",
        "claude-3.5-sonnet": "sur",
    }

    @classmethod
    def get_models(cls, **kwargs):
        # Initialize model lists if not exists
        if not hasattr(cls, 'image_models'):
            cls.image_models = []
        if not hasattr(cls, 'text_models'):
            cls.text_models = []

        # Fetch image models if not cached
        if not cls.image_models:
            url = "https://image.pollinations.ai/models"
            response = requests.get(url)
            raise_for_status(response)
            cls.image_models = response.json()
            cls.image_models.extend(cls.additional_models_image)

        # Fetch text models if not cached
        if not cls.text_models:
            url = "https://text.pollinations.ai/models"
            response = requests.get(url)
            raise_for_status(response)
            cls.text_models = [model.get("name") for model in response.json()]
            cls.text_models.extend(cls.additional_models_text)

        # Return combined models
        return cls.text_models + cls.image_models

    @classmethod
    async def create_async_generator(
        cls,
        model: str,
        messages: Messages,
        proxy: str = None,
        # Image specific parameters
        prompt: str = None,
        width: int = 1024,
        height: int = 1024,
        seed: Optional[int] = None,
        nologo: bool = True,
        private: bool = False,
        enhance: bool = False,
        safe: bool = False,
        # Text specific parameters
        api_key: str = None,
        temperature: float = 0.5,
        presence_penalty: float = 0,
        top_p: float = 1,
        frequency_penalty: float = 0,
        stream: bool = True,
        **kwargs
    ) -> AsyncResult:
        model = cls.get_model(model)
        
        # Check if models
        # Image generation
        if model in cls.image_models:
            async for result in cls._generate_image(
                model=model,
                messages=messages,
                prompt=prompt,
                proxy=proxy,
                width=width,
                height=height,
                seed=seed,
                nologo=nologo,
                private=private,
                enhance=enhance,
                safe=safe
            ):
                yield result
        else:
            # Text generation
            async for result in cls._generate_text(
                model=model,
                messages=messages,
                proxy=proxy,
                api_key=api_key,
                temperature=temperature,
                presence_penalty=presence_penalty,
                top_p=top_p,
                frequency_penalty=frequency_penalty,
                stream=stream
            ):
                yield result

    @classmethod
    async def _generate_image(
        cls,
        model: str,
        messages: Messages,
        prompt: str,
        proxy: str,
        width: int,
        height: int,
        seed: Optional[int],
        nologo: bool,
        private: bool,
        enhance: bool,
        safe: bool
    ) -> AsyncResult:
        if seed is None:
            seed = random.randint(0, 10000)

		
        headers = {
            'Accept': '*/*',
            'Accept-Language': 'en-US,en;q=0.9',
            'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36',
        }

        params = {
            "seed": seed,
            "width": width,
            "height": height,
            "model": model,
            "nologo": nologo,
            "private": private,
            "enhance": enhance,
            "safe": safe
        }
        params = {k: v for k, v in params.items() if v is not None}

        async with ClientSession(headers=headers) as session:
            prompt = quote(messages[-1]["content"] if prompt is None else prompt)
            param_string = "&".join(f"{k}={v}" for k, v in params.items())
            url = f"{cls.image_api_endpoint}/prompt/{prompt}?{param_string}"

            async with session.head(url, proxy=proxy) as response:
                if response.status == 200:
                    image_response = ImageResponse(images=url, alt=messages[-1]["content"])
                    yield image_response

    @classmethod
    async def _generate_text(
        cls,
        model: str,
        messages: Messages,
        proxy: str,
        api_key: str,
        temperature: float,
        presence_penalty: float,
        top_p: float,
        frequency_penalty: float,
        stream: bool
    ) -> AsyncResult:
        if api_key is None:
            api_key = "dummy"  # Default value if api_key is not provided
            
        headers = {
            "accept": "*/*",
            "accept-language": "en-US,en;q=0.9",
            "authorization": f"Bearer {api_key}",
            "content-type": "application/json",
            "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36"
        }

        async with ClientSession(headers=headers) as session:
            data = {
                "messages": messages,
                "model": model,
                "temperature": temperature,
                "presence_penalty": presence_penalty,
                "top_p": top_p,
                "frequency_penalty": frequency_penalty,
                "jsonMode": False,
                "stream": stream
            }
            
            async with session.post(cls.text_api_endpoint, json=data, proxy=proxy) as response:
                response.raise_for_status()
                async for chunk in response.content:
                    if chunk:
                        decoded_chunk = chunk.decode()
                        try:
                            json_response = json.loads(decoded_chunk)
                            content = json_response['choices'][0]['message']['content']
                            yield content
                        except json.JSONDecodeError:
                            yield decoded_chunk