"""
配置管理API
"""
from fastapi import APIRouter, HTTPException
from api.models.config import ConfigItem, ConfigUpdate
import sys
from pathlib import Path

# 添加项目根目录到路径
project_root = Path(__file__).parent.parent.parent.parent
sys.path.insert(0, str(project_root))
sys.path.insert(0, str(project_root / 'backend'))

from database.models import TradingConfig

router = APIRouter()


@router.get("")
@router.get("/")
async def get_all_configs():
    """获取所有配置"""
    try:
        configs = TradingConfig.get_all()
        result = {}
        for config in configs:
            result[config['config_key']] = {
                'value': TradingConfig._convert_value(
                    config['config_value'], 
                    config['config_type']
                ),
                'type': config['config_type'],
                'category': config['category'],
                'description': config['description']
            }
        return result
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))


@router.get("/{key}")
async def get_config(key: str):
    """获取单个配置"""
    try:
        config = TradingConfig.get(key)
        if not config:
            raise HTTPException(status_code=404, detail="Config not found")
        
        return {
            'key': config['config_key'],
            'value': TradingConfig._convert_value(
                config['config_value'], 
                config['config_type']
            ),
            'type': config['config_type'],
            'category': config['category'],
            'description': config['description']
        }
    except HTTPException:
        raise
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))


@router.put("/{key}")
async def update_config(key: str, item: ConfigUpdate):
    """更新配置"""
    try:
        # 获取现有配置以确定类型和分类
        existing = TradingConfig.get(key)
        if not existing:
            raise HTTPException(status_code=404, detail="Config not found")
        
        config_type = item.type or existing['config_type']
        category = item.category or existing['category']
        description = item.description or existing['description']
        
        # 验证配置值
        if config_type == 'number':
            try:
                float(item.value)
            except (ValueError, TypeError):
                raise HTTPException(status_code=400, detail=f"Invalid number value for {key}")
        elif config_type == 'boolean':
            if not isinstance(item.value, bool):
                # 尝试转换
                if isinstance(item.value, str):
                    item.value = item.value.lower() in ('true', '1', 'yes', 'on')
                else:
                    item.value = bool(item.value)
        
        # 特殊验证：百分比配置应该在0-1之间
        if 'PERCENT' in key and config_type == 'number':
            if not (0 <= float(item.value) <= 1):
                raise HTTPException(
                    status_code=400, 
                    detail=f"{key} must be between 0 and 1 (0% to 100%)"
                )
        
        # 更新配置
        TradingConfig.set(key, item.value, config_type, category, description)
        
        return {
            "message": "配置已更新",
            "key": key,
            "value": item.value,
            "note": "交易系统将在下次扫描时自动使用新配置"
        }
    except HTTPException:
        raise
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))


@router.post("/batch")
async def update_configs_batch(configs: list[ConfigItem]):
    """批量更新配置"""
    try:
        updated_count = 0
        errors = []
        
        for item in configs:
            try:
                # 验证配置值
                if item.type == 'number':
                    try:
                        float(item.value)
                    except (ValueError, TypeError):
                        errors.append(f"{item.key}: Invalid number value")
                        continue
                
                # 特殊验证：百分比配置
                if 'PERCENT' in item.key and item.type == 'number':
                    if not (0 <= float(item.value) <= 1):
                        errors.append(f"{item.key}: Must be between 0 and 1")
                        continue
                
                TradingConfig.set(
                    item.key,
                    item.value,
                    item.type,
                    item.category,
                    item.description
                )
                updated_count += 1
            except Exception as e:
                errors.append(f"{item.key}: {str(e)}")
        
        if errors:
            return {
                "message": f"部分配置更新成功: {updated_count}/{len(configs)}",
                "updated": updated_count,
                "errors": errors,
                "note": "交易系统将在下次扫描时自动使用新配置"
            }
        
        return {
            "message": f"成功更新 {updated_count} 个配置",
            "updated": updated_count,
            "note": "交易系统将在下次扫描时自动使用新配置"
        }
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))