#!/usr/bin/env python3
from PyQt5 import QtCore
from PyQt5 import QtWidgets
from PyQt5 import QtGui
from PyQt5 import QtPrintSupport


def settings():
    settings = QtCore.QSettings("Yansoft","Prasopes")
    defvals = {("view/autozoomy", True),
               ("view/filebrowservisible", True),
               ("view/intensities", False)}
    [settings.setValue(i[0], i[1]) for i in defvals if settings.value(i[0]) == None]
    return settings


def pathsearch(text, value, config):
    filename = QtWidgets.QFileDialog.getExistingDirectory()
    if filename is not '':
        text.setText(filename)
        config.setValue(value, filename)


def pathlayout(label, value, config):
    """adds generic filepath config line"""
    textfield = QtWidgets.QLineEdit(config.value(value))
    textfield.editingFinished.connect(lambda: config.setValue(
        value, textfield.text()))
    browse_button = QtWidgets.QPushButton("Browse..")
    browse_button.clicked.connect(lambda: pathsearch(
        textfield, value, config))
    layout = QtWidgets.QHBoxLayout()
    layout.addWidget(QtWidgets.QLabel("{}:".format(label)))
    layout.addWidget(textfield)
    layout.addWidget(browse_button)
    return layout


def dial(parent):
    """constructs a dialog window"""
    dialog = QtWidgets.QDialog(
        parent, windowTitle='Settings')
    dialog.resize(600,-1)

    config = settings()
    close_button = QtWidgets.QPushButton("Close")
    close_button.clicked.connect(dialog.close)

    butt_layout = QtWidgets.QHBoxLayout()
    butt_layout.addWidget(close_button)
    butt_layout.addStretch(1)

    layout = QtWidgets.QVBoxLayout(dialog)
    layout.addLayout(pathlayout("Acquisition temp folder",
                                "tmp_location", config))
    layout.addLayout(pathlayout("Default open folder",
                                "open_folder", config))
    layout.addStretch(1)
    layout.addLayout(butt_layout)

    dialog.show()