#!/usr/bin/env python3

# Copyright 2013 Jussi Pakkanen

# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at

#     http://www.apache.org/licenses/LICENSE-2.0

# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import sys, os, pickle
from PyQt5 import uic
from PyQt5.QtWidgets import QApplication, QMainWindow
from PyQt5.QtCore import QAbstractItemModel, QModelIndex, QVariant
import PyQt5.QtCore

class PathModel(QAbstractItemModel):
    def __init__(self, coredata):
        super().__init__()
        self.coredata = coredata
        self.names = ['Prefix', 'Library dir', 'Binary dir', 'Include dir', 'Data dir',\
                      'Man dir', 'Locale dir']
        self.attr_name = ['prefix', 'libdir', 'bindir', 'includedir', 'datadir', \
                          'mandir', 'localedir']

    def flags(self, index):
        if index.column() == 1:
            editable = PyQt5.QtCore.Qt.ItemIsEditable
        else:
            editable= 0
        return PyQt5.QtCore.Qt.ItemIsSelectable | PyQt5.QtCore.Qt.ItemIsEnabled | editable

    def rowCount(self, index):
        if index.isValid():
            return 0
        return len(self.names)
    
    def columnCount(self, index):
        return 2

    def headerData(self, section, orientation, role):
        if section == 1:
            return QVariant('Path')
        return QVariant('Type')

    def setData(self, index, value, role):
        if role != PyQt5.QtCore.Qt.EditRole:
            return False
        row = index.row()
        column = index.column()
        s = str(value)
        setattr(self.coredata, self.attr_name[row], s)
        self.dataChanged.emit(self.createIndex(row, column), self.createIndex(row, column))
        return True

    def data(self, index, role):
        if role != PyQt5.QtCore.Qt.DisplayRole:
            return QVariant()
        row = index.row()
        column = index.column()
        if column == 0:
            return self.names[row]
        return getattr(self.coredata, self.attr_name[row])

    def index(self, row, column, parent):
        return self.createIndex(row, column)
    
    def parent(self, index):
        return QModelIndex()

class MesonGui():
    def __init__(self, build_dir):
        self.build_dir = os.path.join(os.getcwd(), build_dir)
        self.src_dir = os.path.normpath(os.path.join(self.build_dir, '..')) # HACK HACK HACK WRONG!
        uifile = 'mesonmain.ui'
        self.ui = uic.loadUi(uifile)
        self.ui.show()
        self.coredata_file = os.path.join(build_dir, 'meson-private/coredata.dat')
        if not os.path.exists(self.coredata_file):
            printf("Argument is not build directory.")
            sys.exit(1)
        self.coredata = pickle.load(open(self.coredata_file, 'rb'))
        self.path_model = PathModel(self.coredata)
        self.fill_data()
        self.ui.path_view.setModel(self.path_model)

    def fill_data(self):
        self.ui.project_label.setText('Hack project')
        self.ui.srcdir_label.setText(self.src_dir)
        self.ui.builddir_label.setText(self.build_dir)
        if self.coredata.cross_file is None:
            btype = 'Native build'
        else:
            btype = 'Cross build'
        self.ui.buildtype_label.setText(btype)

if __name__ == '__main__':
    app = QApplication(sys.argv)
    if len(sys.argv) != 2:
        print(sys.argv[0], "<build dir>")
        sys.exit(1)
    gui = MesonGui(sys.argv[1])
    sys.exit(app.exec_())