/*
* @Author: 陶秋峰
* @Date:   2015-12-16 11:08:04
* @Last Modified by:   陶秋峰
* @Last Modified time: 2015-12-16 11:08:06
* @CopyRight 飞道科技
*/

/*
"condition": {
"param": {
"p1": "sss"
},
"paging": {
"size": 20,
"index": 1
},
"sort": {
"p1": 1
}
}
*/
export interface params {
	param: {[name: string]: string | number | boolean};
	paging: {
		index?: number;
		size?: number;
	};
	sort: {[name: string]: string | number | boolean};
};
export function init_params(): params{
	return {
		param: {},
		paging: {
			size: 12,
			index: 1
		},
		sort: {}
	};
}

/**
 * 设置当前分页页码
 * @param  {number} index     页码
 */
export function chang_paging_index(params: params): Function {
	params || (params = init_params());
	return function(index: number): params{
		params.paging.index = +index;
		return params;
	};
}
/**
 * 设置分页大小，默认12
 * @param {number} size
 */
 export function set_paging_size(params: params): Function {
		params || (params = init_params());
		return function(size: number): params{
		params.paging.size = +size;
			return params;
		};
	}

/**
 * 设置分页大小，默认12
 * @param {number} size
 */
 export function add_sort(params: params): Function {
		params || (params = init_params());
		return function(name: string, asc: boolean): params{
		params.sort[name] = asc ? 1: -1;
			return params;
		};
	}

export function add_param(params: params): Function {
	params || (params = init_params());
	return function(name: string, value: any): params{
		params.param[name] = value;
		return params;
	};
}