#!/usr/bin/env python3
# -*- coding: utf-8 -*-

"""
海报API路由 - 统一生成接口
"""

import logging
from fastapi import APIRouter, Depends, HTTPException, BackgroundTasks
from typing import List, Dict, Any

from core.config import ConfigManager
from core.ai import AIAgent
from utils.file_io import OutputManager
from api.services.poster import PosterService
from api.models.poster import (
    PosterGenerateRequest, PosterGenerateResponse,
    ImageUsageRequest, ImageUsageResponse,
    TemplateListResponse
)

# 从依赖注入模块导入依赖
from api.dependencies import get_config, get_ai_agent, get_output_manager

logger = logging.getLogger(__name__)

# 创建路由
router = APIRouter()

# 依赖注入函数
def get_poster_service(
    config_manager: ConfigManager = Depends(get_config),
    ai_agent: AIAgent = Depends(get_ai_agent),
    output_manager: OutputManager = Depends(get_output_manager)
) -> PosterService:
    """获取海报服务"""
    return PosterService(ai_agent, config_manager, output_manager)


@router.get("/templates", response_model=TemplateListResponse, summary="获取可用模板列表")
async def get_templates(
    poster_service: PosterService = Depends(get_poster_service)
):
    """
    获取可用的海报模板列表
    """
    try:
        templates = await poster_service.get_available_templates()
        return TemplateListResponse(
            templates=templates,
            total_count=len(templates)
        )
    except Exception as e:
        logger.error(f"获取模板列表失败: {e}", exc_info=True)
        raise HTTPException(status_code=500, detail=f"获取模板列表失败: {str(e)}")


@router.get("/templates/{template_id}", summary="获取指定模板信息")
async def get_template_info(
    template_id: str,
    poster_service: PosterService = Depends(get_poster_service)
):
    """
    获取指定模板的详细信息
    """
    try:
        template_info = await poster_service.get_template_info(template_id)
        if not template_info:
            raise HTTPException(status_code=404, detail=f"模板 {template_id} 不存在")
        
        return template_info
    except HTTPException:
        raise
    except Exception as e:
        logger.error(f"获取模板信息失败: {e}", exc_info=True)
        raise HTTPException(status_code=500, detail=f"获取模板信息失败: {str(e)}")


@router.post("/generate", response_model=PosterGenerateResponse, summary="生成海报")
async def generate_poster(
    request: PosterGenerateRequest,
    poster_service: PosterService = Depends(get_poster_service)
):
    """
    生成海报
    
    - **content_id**: 内容ID（可选）
    - **product_id**: 产品ID（可选）
    - **scenic_spot_id**: 景区ID（可选）
    - **image_ids**: 图像ID列表（可选）
    - **template_id**: 模板ID（默认为vibrant）
    - **generate_collage**: 是否生成拼图
    - **poster_content**: 用户提供的海报内容（可选）
    - **force_llm_generation**: 是否强制使用LLM生成内容（可选）
    """
    try:
        result = await poster_service.generate_poster(
            template_id=request.templateId,
            poster_content=request.posterContent,
            content_id=request.contentId,
            product_id=request.productId,
            scenic_spot_id=request.scenicSpotId,
            images_base64=request.imagesBase64,
            num_variations=request.numVariations,
            force_llm_generation=request.forceLlmGeneration
        )
        
        return PosterGenerateResponse(**result)
    except ValueError as e:
        logger.error(f"参数错误: {e}")
        raise HTTPException(status_code=400, detail=str(e))
    except Exception as e:
        logger.error(f"生成海报失败: {e}", exc_info=True)
        raise HTTPException(status_code=500, detail=f"生成海报失败: {str(e)}")


@router.post("/image-usage", response_model=ImageUsageResponse, summary="查询图像使用情况")
async def get_image_usage(
    request: ImageUsageRequest,
    poster_service: PosterService = Depends(get_poster_service)
):
    """
    查询图像使用情况
    """
    try:
        result = poster_service.get_image_usage_info(request.image_ids)
        return ImageUsageResponse(**result)
    except Exception as e:
        logger.error(f"查询图像使用情况失败: {e}", exc_info=True)
        raise HTTPException(status_code=500, detail=f"查询图像使用情况失败: {str(e)}")