#!/usr/bin/env python3
# builtins
import click
import uvicorn
import os
import sys
import re
import importlib
from pprint import pprint

from pyheatpump.logger import logger_init
from pyheatpump.models import *
from pyheatpump.db import commit

CONTEXT_SETTINGS={
    'default_map':{'run': {}}
}

@click.group(invoke_without_command=True, context_settings=CONTEXT_SETTINGS)
@click.option('--version', is_flag=True)
@click.pass_context
def cli(ctx, version):
    if version:
        from pyheatpump import version
        return click.echo(pyheatpump.version())


@click.option('--host', default=None)
@click.option('--port', default=None)
@cli.command()
def run(host, port):
    logger = logger_init()

    from .config import (API_HOST, API_PORT)

    if not host:
        host = API_HOST

    if not port:
        port = API_PORT

    log_level = 'info'

    click.echo('Launching PyHeatpump application')

    uvicorn.run('pyheatpump.app:application',
        host=host,
        port=int(port),
        log_level=log_level,
        reload=True)


@cli.command()
def fetch():
    logger = logger_init()

    from pyheatpump import modbus
    var_types = VariableType.getall()

    # Analog - float
    analog = var_types['Analog']
    logger.info('Read analog variables in registers [{}, {}]'.format(
        analog.start_address, analog.end_address
    ))
    res = modbus.read_holding_registers(analog.start_address, analog.end_address)

    for r in range(len(res)):
        var = Variable(**{
            'type': analog,
            'address': r + analog.start_address})

        if not var.exists():
            logger.info('Insert variable {}:{}'.format(
                var.type, var.address))
            var.insert()

        val = VariableValue(**{
            'type': var.type,
            'address': var.address,
            'value': res[r]})
        val.insert()


    # Integer - int
    integer = var_types['Integer']
    logger.info('Read integer variables in registers [{}, {}]'.format(
        integer.start_address, integer.end_address
    ))
    res = modbus.read_holding_registers(integer.start_address, integer.end_address)

    for r in range(len(res)):
        var = Variable(**{
            'type': integer,
            'address': r + integer.start_address})

        if not var.exists():
            logger.info('Insert variable {}:{}'.format(
                var.type, var.address))
            var.insert()

        val = VariableValue(**{
            'type': var.type,
            'address': var.address,
            'value': res[r]})
        val.insert()

    # Digital - bool
    digital = var_types['Digital']
    logger.info('Read digital variables in coils [{}, {}]'.format(
        digital.start_address, digital.end_address
    ))
    res = modbus.read_coils(digital.start_address, digital.end_address)

    for r in range(len(res)):
        var = Variable(**{
            'type': digital,
            'address': r + digital.start_address})

        if not var.exists():
            logger.info('Insert variable {}:{}'.format(
                var.type, var.address))
            var.insert()

        val = VariableValue(**{
            'type': var.type,
            'address': var.address,
            'value': res[r]})
        val.insert()

    commit()
    logger.info('Successfully read all variables')