"""
mbed SDK
Copyright (c) 2011-2013 ARM Limited

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.
"""
from os.path import basename, join, dirname
from project_generator_definitions.definitions import ProGenDef

from workspace_tools.export.exporters import Exporter
from workspace_tools.targets import TARGET_MAP, TARGET_NAMES

# If you wish to add a new target, add it to project_generator_definitions, and then
# define progen_target name in the target class (`` self.progen_target = 'my_target_name' ``)
# There are 2 default mbed templates (predefined settings) uvision.uvproj and uvproj_microlib.uvproj.tmpl
class Uvision4(Exporter):
    """
    Exporter class for uvision. This class uses project generator.
    """
    # These 2 are currently for exporters backward compatiblity
    NAME = 'uVision4'
    TOOLCHAIN = 'ARM'
    # PROGEN_ACTIVE contains information for exporter scripts that this is using progen
    PROGEN_ACTIVE = True

    # backward compatibility with our scripts
    TARGETS = []
    for target in TARGET_NAMES:
        try:
            if (ProGenDef('uvision').is_supported(str(TARGET_MAP[target])) or
                ProGenDef('uvision').is_supported(TARGET_MAP[target].progen['target'])):
                TARGETS.append(target)
        except AttributeError:
            # target is not supported yet
            continue

    def get_toolchain(self):
        return TARGET_MAP[self.target].default_toolchain

    def generate(self):
        """ Generates the project files """
        project_data = self.progen_get_project_data()
        tool_specific = {}
        # Expand tool specific settings by uvision specific settings which are required
        try:
            if TARGET_MAP[self.target].progen['uvision']['template']:
                tool_specific['uvision'] = TARGET_MAP[self.target].progen['uvision']
        except KeyError:
            # use default template
            # by the mbed projects
            tool_specific['uvision'] = {
                    'template': [join(dirname(__file__),  'uvision.uvproj.tmpl')],
            }

        project_data['tool_specific'] = {}
        project_data['tool_specific'].update(tool_specific)

        # get flags from toolchain and apply
        project_data['tool_specific']['uvision']['misc'] = {}
        project_data['tool_specific']['uvision']['misc']['asm_flags'] = list(set(self.toolchain.flags['common'] + self.toolchain.flags['asm']))
        project_data['tool_specific']['uvision']['misc']['c_flags'] = list(set(self.toolchain.flags['common'] + self.toolchain.flags['c']))
        # not compatible with c99 flag set in the template
        project_data['tool_specific']['uvision']['misc']['c_flags'].remove("--c99")
        project_data['tool_specific']['uvision']['misc']['cxx_flags'] = list(set(self.toolchain.flags['common'] + self.toolchain.flags['ld']))
        project_data['tool_specific']['uvision']['misc']['ld_flags'] = self.toolchain.flags['ld']

        i = 0
        for macro in project_data['common']['macros']:
            # armasm does not like floating numbers in macros, timestamp to int
            if macro.startswith('MBED_BUILD_TIMESTAMP'):
                timestamp = macro[len('MBED_BUILD_TIMESTAMP='):]
                project_data['common']['macros'][i] = 'MBED_BUILD_TIMESTAMP=' + str(int(float(timestamp)))
            # armasm does not even accept MACRO=string
            if macro.startswith('MBED_USERNAME'):
                project_data['common']['macros'].pop(i)
            i += 1
        project_data['common']['macros'].append('__ASSERT_MSG')
        self.progen_gen_file('uvision', project_data)