/*
* @Author: 陶秋峰
* @Date:   2016-01-06 22:55:03
* @Last Modified by:   陶秋峰
* @Last Modified time: 2016-01-06 22:55:32
* @CopyRight 蛮蛮工作室
*/

import global from './global';
import {Hash} from './interfaces';

const url = global.url || 'http://127.0.0.1/get-data';

export enum enum_param_relation{
	and, or
}

export enum enum_param_op{
	_in, not_in, like, not_like, contains
}

export interface ICondition{
	op: enum_param_op;
	name: string;
	value: string | number | boolean | IParam;
}

export interface IParam{
	rel: enum_param_relation;
	conditions: ICondition[];
}

export interface IData_def{
	name: string;
	modelid: string;
	editable: boolean;
	table_name: string;
	param: IParam;
	sort: Hash<boolean>;
	paging_size: number;
	paging_index: number;
	auto_load_data: boolean;
}

import request from './request';
import Promise from './promise';

export default class Data{
	private _idx = -1;
	public get index(): number {
		return this._idx;
	}
	public set index(idx: number) {
		this._idx = idx;
	}
	public reset(){
		this._idx = -1;
	}
	public next() {
		return ++this._idx < this.row_count;
	}
	public get row_count(): number {
		let data = this.data;
		return (data && data.length) || 0;
	}
	private def: IData_def;
	public get auto_load_data(){
		return this.def.auto_load_data;
	}
	public get_row(idx: number = this._idx): any {
		return this.data[idx];
	}
	private data: any[];
	public load_data(){
		this.data = [];
		return new Promise((resolve, reject)=>{
			let id = this.def.modelid;
			if(!id){
				reject('model id is required');
				return;
			}
			request.post(url, {
				responseType: 'json',
				data: {}
			})
			.then((data) => {
				if (data.data) {
					let d = <{
						code: number;
						data: any[];
						err_msg: string;
					}>data.data;
					if(d.code === 1){
						this.data = d.data;
						resolve(d.data);
					} else {
						reject(d.err_msg);
					}
				} else {
					reject(data.statusText);
				}
			}, function(e){
				reject(e);
			})
		});
	}
	public constructor(def: IData_def){
		this.def = def;
	}
}