from __future__ import print_function

import ConfigParser
import os
from configtool.data import BSIZESMALL, offsetTcLabel

INIFILE = "configtool.ini"
DEFAULT_INIFILE = "configtool.default.ini"


class Settings:
    def __init__(self, app, folder, ini=None):
        self.app = app
        self.folder = folder
        self.inifile = os.path.join(folder, INIFILE)
        self.section = "configtool"

        self.arduinodir = ""
        self.cflags = ""
        self.ldflags = ""
        self.objcopyflags = ""
        self.programmer = "wiring"
        self.programflags = ""
        self.port = "/dev/ttyACM0"
        self.uploadspeed = 38400

        self.t0 = 25
        self.r1 = 0
        self.numTemps = 25
        self.maxAdc = 1023
        self.minAdc = 1

        # Runtime settings
        self.verbose = 0

        self.cfg = ConfigParser.ConfigParser()
        self.cfg.optionxform = str

        self.loaded = self.readConfig(ini)

    def readConfig(self, ini):
        if ini:
            if not self.cfg.read(ini):
                return False
        else:
            if not self.cfg.read(self.inifile):
                if not self.cfg.read(os.path.join(self.folder, DEFAULT_INIFILE)):
                    print(
                        "Neither of settings files %s or %s exist. Using default values."
                        % (INIFILE, DEFAULT_INIFILE)
                    )
                    return False

        if self.cfg.has_section(self.section):
            for opt, value in self.cfg.items(self.section):
                value = value.replace("\n", " ")
                if opt == "arduinodir":
                    self.arduinodir = value
                elif opt == "cflags":
                    self.cflags = value
                elif opt == "ldflags":
                    self.ldflags = value
                elif opt == "programmer":
                    self.programmer = value
                elif opt == "port":
                    self.port = value
                elif opt == "objcopyflags":
                    self.objcopyflags = value
                elif opt == "programflags":
                    self.programflags = value
                elif opt == "t0":
                    self.t0 = value
                elif opt == "r1":
                    self.r1 = value
                elif opt == "numtemps":
                    self.numTemps = value
                elif opt == "maxadc":
                    self.maxAdc = value
                elif opt == "minadc":
                    self.minAdc = value
                elif opt == "uploadspeed":
                    self.uploadspeed = value
                else:
                    print("Unknown %s option: %s - ignoring." % (self.section, opt))
        else:
            print("Missing %s section - assuming defaults." % self.section)
            return False

        return True

    def getValues(self):
        return {
            "arduinodir": str(self.arduinodir),
            "cflags": str(self.cflags),
            "ldflags": str(self.ldflags),
            "objcopyflags": str(self.objcopyflags),
            "programmer": str(self.programmer),
            "port": str(self.port),
            "t0": str(self.t0),
            "r1": str(self.r1),
            "numtemps": str(self.numTemps),
            "maxadc": str(self.maxAdc),
            "minadc": str(self.minAdc),
            "uploadspeed": str(self.uploadspeed),
        }

    def saveSettings(self, inifile=None):
        if not inifile:
            inifile = self.inifile

        self.section = "configtool"
        try:
            self.cfg.add_section(self.section)
        except ConfigParser.DuplicateSectionError:
            pass

        values = self.getValues()
        for k in values.keys():
            self.cfg.set(self.section, k, values[k])

        try:
            cfp = open(inifile, "wb")
        except:
            print("Unable to open settings file %s for writing." % inifile)
            return False

        self.cfg.write(cfp)
        cfp.close()

        return True