# -*- coding: utf-8 -*-
#!/usr/bin/env python
"""
预设逻辑码对应关系
"""
import os
import xlrd
import pprint
from base import regex_split, init_env

import click

init_env(interactive=True)

from apps.web.device.models import Device


class DuplicateError(Exception):
    pass

class InvalidInput(Exception):
    pass

def check_duplicate(l):
    """
    检查是否有重复项
    :param l:
    :return:
    """
    seen = []
    seen_add = seen.append
    for e in l:
        if e in seen:
            raise DuplicateError()
        seen_add(e)

def check(*checkers):
    for checker in checkers:
        checker()

@click.group()
def cli():
    click.echo(u'欢迎来到添加逻辑码脚本!')

@cli.command()
@click.option('-f','--filepath', prompt=u'请输入要转换的表格文件路径', default=os.environ['DEFAULT_LOGICALCODE_EXCEL_PATH'])
@click.option('-s','--start_row', prompt=u'请输入开始插入的行数')
@click.option('-m','--mode', prompt=u'模式:=(read|write|delete)', default='read')
def excel(filepath, start_row, mode):
    """
    通过表格批量导入映射关系
    :param filepath:
    :param start_row:
    :param mode:
    :return:
    """
    start_row = int(start_row)
    book = xlrd.open_workbook(filepath)

    try:
        sheet = book.sheet_by_name("Sheet1")
    except:
        click.echo("no sheet in %s named Sheet1" % filepath)
        raise

    nrows = sheet.nrows
    rows = []
    for i in range(1, nrows):
        row_data = sheet.row_values(i)

        #: 有部分空行和描述行存在，需要过滤掉
        if isinstance(row_data[0], float) and int(row_data[0]) >= start_row and row_data[1]:
            delimiters = "<", "；", ","
            row_data[1] = regex_split(str(int(row_data[1])), *delimiters)[0]
            rows.append(row_data)

    #: 以免有不合规数据插入，需要首先做校验
    check_duplicate(rows)

    if mode == 'read':
        click.echo('read mode start')
        pprint.pprint(list(enumerate(rows)))
        click.echo('read mode end')

    elif mode == 'write':
        #: 目前只操作
        click.echo('write mode start')
        click.echo('start pushing mapping to database and cache.')
        for row in rows:
            logicalCode = str(int(row[0]))
            devno = str(int(row[1]))

            click.echo('adding (logicalCode=%s, devNo=%s) to db' % (logicalCode, devno))
            Device.get_collection().insert_one({'devNo':devno, 'logicalCode':logicalCode})
            click.echo('setting (logicalCode=%s, devNo=%s) to cache' % (logicalCode, devno))

            Device.update_l_cache(devno, logicalCode)

            Device.get_dev(devno)
        click.echo('write mode end')

    elif mode == 'delete':
        click.echo('delete mode start')
        click.echo('we will only delete cache now')
        for row in rows:
            logicalCode = str(int(row[0]))
            devNo = str(int(row[1]))
            click.echo('deleting (logicalCode=%s, devNo=%s)' % (logicalCode, devNo))

            Device.invalid_l_cache(logicalCode)
            Device.invalid_device_cache(devNo)

        click.echo('delete mode end')

    elif mode == 'modify':
        click.echo('modify mode start')
        click.echo('import!!!only expert use it')
        for row in rows:
            logicalCode = str(int(row[0]))
            devNo = str(int(row[1]))

            Device.invalid_l_cache(logicalCode)
            Device.invalid_device_cache(devNo)

            Device.get_collection().update_one({'devNo': devNo}, {'$set': {'logicalCode': logicalCode}}, upsert = False)

            Device.update_l_cache(devNo, logicalCode)

            Device.get_dev(devNo)
        click.echo('delete mode end')

    elif mode == 'fix':
        click.echo('fix mode start')
        for row in rows:
            logicalCode = str(int(row[0]))

            devNo = str(int(row[1]))

            click.echo('fixing (logicalCode=%s, devNo=%s)' % (logicalCode, devNo))

            Device.invalid_device_cache(devNo)
        click.echo('fix mode end')

    click.echo('Finished! total: %s rows' % len(rows))

@cli.command()
@click.option('--bulk/--no-bulk', help=u'是否给所有设备都添加设备号为逻辑编码', default=False)
@click.option('--relation', help=u'映射关系', default='')
@click.option('--relations', help=u'多个映射关系', default='')
def inject(bulk, relation, relations):
    """
    手工添加映射关系
    :param bulk:
    :param relation: 示例: devNo,logicalCode
    :param relations: 示例: devNo,logicalCode,devNo,logicalCode
    :return:
    """

    def _single_operation(devNo, logicalCode):
        insert_relation_mapping(logicalCode=logicalCode, devNo=devNo)
        return Device.objects(devNo=devNo, logicalCode=logicalCode).save()

    if bulk:
        #: 目前不可用
        pass

    else:
        if not any([relation, relations]):
            raise InvalidInput(u"设备号不可为空!")

        if relations:
            relations = relation.split(',')
            relation_tuples = [ (devNo, logicalCode) for devNo in relations[::2] for logicalCode in relation[1::2] ]
            for r in relation_tuples:
                _single_operation(*r)

        if relation:
            try:
                devNo, logicalCode = relation.strip(' ').split(',')
                click.echo(u'你正在添加映射关系 devNo=%s,logicalCode=%s' % (devNo, logicalCode))
                _single_operation(devNo, logicalCode)
            except AttributeError:
                click.echo(u'请注意输入格式应为  设备号,逻辑码 ')
                raise

    click.echo('success!')

@cli.command()
def update():
    """
    需要做一定的校验
    :return:
    """
    pass

@cli.command()
def remove(logicalCode):
    """

    :param logicalCode:
    :return:
    """
    pass

if __name__ == '__main__':
    click.echo(u'该脚本已经弃用，请检查是否有变更的部分需要处理')
    #cli()