# -*- coding: utf-8 -*-

"""
***************************************************************************
    OTBUtils.py
    ---------------------
    Date                 : August 2012
    Copyright            : (C) 2012 by Victor Olaya
    Email                : volayaf at gmail dot com
***************************************************************************
*                                                                         *
*   This program is free software; you can redistribute it and/or modify  *
*   it under the terms of the GNU General Public License as published by  *
*   the Free Software Foundation; either version 2 of the License, or     *
*   (at your option) any later version.                                   *
*                                                                         *
***************************************************************************
"""

__author__ = 'Victor Olaya'
__date__ = 'August 2012'
__copyright__ = '(C) 2012, Victor Olaya'

# This will get replaced with a git SHA1 when you do a git archive

__revision__ = '$Format:%H$'

import os
import subprocess
from qgis.core import QgsApplication
from processing.core.ProcessingConfig import ProcessingConfig
from processing.core.ProcessingLog import ProcessingLog
from processing.tools.system import *


class OTBUtils:

    OTB_FOLDER = 'OTB_FOLDER'
    OTB_LIB_FOLDER = 'OTB_LIB_FOLDER'
    OTB_SRTM_FOLDER = 'OTB_SRTM_FOLDER'
    OTB_GEOID_FILE = 'OTB_GEOID_FILE'

    @staticmethod
    def otbPath():
        folder = ProcessingConfig.getSetting(OTBUtils.OTB_FOLDER)
        if folder is None:
            folder = ''

            # Try to configure the path automatically
            if isMac():
                testfolder = os.path.join(str(QgsApplication.prefixPath()),
                        'bin')
                if os.path.exists(os.path.join(testfolder, 'otbcli')):
                    folder = testfolder
                else:
                    testfolder = '/usr/local/bin'
                    if os.path.exists(os.path.join(testfolder, 'otbcli')):
                        folder = testfolder
            elif isWindows():
                testfolder = os.path.dirname(str(QgsApplication.prefixPath()))
                testfolder = os.path.dirname(testfolder)
                testfolder = os.path.join(testfolder, 'bin')
                path = os.path.join(testfolder, 'otbcli.bat')
                if os.path.exists(path):
                    folder = testfolder
            else:
                testfolder = '/usr/bin'
                if os.path.exists(os.path.join(testfolder, 'otbcli')):
                    folder = testfolder
        return folder

    @staticmethod
    def otbLibPath():
        folder = ProcessingConfig.getSetting(OTBUtils.OTB_LIB_FOLDER)
        if folder is None:
            folder = ''
            # Try to configure the path automatically
            if isMac():
                testfolder = os.path.join(str(QgsApplication.prefixPath()),
                        'lib/otb/applications')
                if os.path.exists(testfolder):
                    folder = testfolder
                else:
                    testfolder = '/usr/local/lib/otb/applications'
                    if os.path.exists(testfolder):
                        folder = testfolder
            elif isWindows():
                testfolder = os.path.dirname(str(QgsApplication.prefixPath()))
                testfolder = os.path.join(testfolder, 'orfeotoolbox')
                testfolder = os.path.join(testfolder, 'applications')
                if os.path.exists(testfolder):
                    folder = testfolder
            else:
                testfolder = '/usr/lib/otb/applications'
                if os.path.exists(testfolder):
                    folder = testfolder
        return folder

    @staticmethod
    def otbSRTMPath():
        folder = ProcessingConfig.getSetting(OTBUtils.OTB_SRTM_FOLDER)
        if folder is None:
            folder = ''
        return folder

    @staticmethod
    def otbGeoidPath():
        filepath = ProcessingConfig.getSetting(OTBUtils.OTB_GEOID_FILE)
        if filepath is None:
            filepath = ''
        return filepath

    @staticmethod
    def otbDescriptionPath():
        return os.path.join(os.path.dirname(__file__), 'description')

    @staticmethod
    def executeOtb(commands, progress):
        loglines = []
        loglines.append('OTB execution console output')
        os.putenv('ITK_AUTOLOAD_PATH', OTBUtils.otbLibPath())
        fused_command = ''.join(['"%s" ' % c for c in commands])
        proc = subprocess.Popen(
            fused_command,
            shell=True,
            stdout=subprocess.PIPE,
            stdin=subprocess.PIPE,
            stderr=subprocess.STDOUT,
            universal_newlines=True,
            ).stdout
        for line in iter(proc.readline, ''):
            if '[*' in line:
                idx = line.find('[*')
                perc = int(line[idx - 4:idx - 2].strip(' '))
                if perc != 0:
                    progress.setPercentage(perc)
            else:
                loglines.append(line)
                progress.setConsoleInfo(line)
        ProcessingLog.addToLog(ProcessingLog.LOG_INFO, loglines)