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

# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

from __future__ import absolute_import, print_function, unicode_literals
from taskgraph import try_option_syntax
from taskgraph.util.attributes import match_run_on_projects

_target_task_methods = {}


def _target_task(name):
    def wrap(func):
        _target_task_methods[name] = func
        return func
    return wrap


def get_method(method):
    """Get a target_task_method to pass to a TaskGraphGenerator."""
    return _target_task_methods[method]


def filter_on_nightly(task, parameters):
    return not task.attributes.get('nightly') or parameters.get('include_nightly')


def filter_for_project(task, parameters):
    """Filter tasks by project.  Optionally enable nightlies."""
    run_on_projects = set(task.attributes.get('run_on_projects', []))
    return match_run_on_projects(parameters['project'], run_on_projects)


def filter_upload_symbols(task, parameters):
    # Filters out symbols when there are not part of a nightly or a release build
    # TODO Remove this too specific filter (bug 1353296)
    return '-upload-symbols' not in task.label or \
        task.attributes.get('nightly') or \
        parameters.get('project') in ('mozilla-beta', 'mozilla-release')


def standard_filter(task, parameters):
    return all(
        filter_func(task, parameters) for filter_func in
        (filter_on_nightly, filter_for_project, filter_upload_symbols)
    )


@_target_task('try_option_syntax')
def target_tasks_try_option_syntax(full_task_graph, parameters):
    """Generate a list of target tasks based on try syntax in
    parameters['message'] and, for context, the full task graph."""
    options = try_option_syntax.TryOptionSyntax(parameters['message'], full_task_graph)
    target_tasks_labels = [t.label for t in full_task_graph.tasks.itervalues()
                           if options.task_matches(t.attributes)]

    attributes = {
        k: getattr(options, k) for k in [
            'env',
            'no_retry',
            'tag',
        ]
    }

    for l in target_tasks_labels:
        task = full_task_graph[l]
        if 'unittest_suite' in task.attributes:
            task.attributes['task_duplicates'] = options.trigger_tests

    for l in target_tasks_labels:
        task = full_task_graph[l]
        # If the developer wants test jobs to be rebuilt N times we add that value here
        if options.trigger_tests > 1 and 'unittest_suite' in task.attributes:
            task.attributes['task_duplicates'] = options.trigger_tests
            task.attributes['profile'] = False

        # If the developer wants test talos jobs to be rebuilt N times we add that value here
        if options.talos_trigger_tests > 1 and 'talos_suite' in task.attributes:
            task.attributes['task_duplicates'] = options.talos_trigger_tests
            task.attributes['profile'] = options.profile

        task.attributes.update(attributes)

    # Add notifications here as well
    if options.notifications:
        for task in full_task_graph:
            owner = parameters.get('owner')
            routes = task.task.setdefault('routes', [])
            if options.notifications == 'all':
                routes.append("notify.email.{}.on-any".format(owner))
            elif options.notifications == 'failure':
                routes.append("notify.email.{}.on-failed".format(owner))
                routes.append("notify.email.{}.on-exception".format(owner))

    return target_tasks_labels


@_target_task('default')
def target_tasks_default(full_task_graph, parameters):
    """Target the tasks which have indicated they should be run on this project
    via the `run_on_projects` attributes."""

    return [l for l, t in full_task_graph.tasks.iteritems()
            if standard_filter(t, parameters)]


@_target_task('ash_tasks')
def target_tasks_ash(full_task_graph, parameters):
    """Target tasks that only run on the ash branch."""
    def filter(task):
        platform = task.attributes.get('build_platform')
        # Early return if platform is None
        if not platform:
            return False
        # Only on Linux platforms
        if 'linux' not in platform:
            return False
        # No random non-build jobs either. This is being purposely done as a
        # blacklist so newly-added jobs aren't missed by default.
        for p in ('nightly', 'haz', 'artifact', 'cov', 'add-on'):
            if p in platform:
                return False
        for k in ('toolchain', 'l10n', 'static-analysis'):
            if k in task.attributes['kind']:
                return False
        # and none of this linux64-asan/debug stuff
        if platform == 'linux64-asan' and task.attributes['build_type'] == 'debug':
            return False
        # no non-e10s tests
        if task.attributes.get('unittest_suite'):
            if not task.attributes.get('e10s'):
                return False
            # don't run talos on ash
            if task.attributes.get('unittest_suite') == 'talos':
                return False
        # don't upload symbols
        if task.attributes['kind'] == 'upload-symbols':
            return False
        return True
    return [l for l, t in full_task_graph.tasks.iteritems() if filter(t)]


@_target_task('cedar_tasks')
def target_tasks_cedar(full_task_graph, parameters):
    """Target tasks that only run on the cedar branch."""
    def filter(task):
        platform = task.attributes.get('build_platform')
        # only select platforms
        if platform not in ['linux64']:
            return False
        if task.attributes.get('unittest_suite'):
            if not (task.attributes['unittest_suite'].startswith('mochitest')
                    or 'xpcshell' in task.attributes['unittest_suite']):
                return False
        return True
    return [l for l, t in full_task_graph.tasks.iteritems() if filter(t)]


@_target_task('graphics_tasks')
def target_tasks_graphics(full_task_graph, parameters):
    """In addition to doing the filtering by project that the 'default'
       filter does, also remove artifact builds because we have csets on
       the graphics branch that aren't on the candidate branches of artifact
       builds"""
    filtered_for_project = target_tasks_default(full_task_graph, parameters)

    def filter(task):
        if task.attributes['kind'] == 'artifact-build':
            return False
        return True
    return [l for l in filtered_for_project if filter(full_task_graph[l])]


@_target_task('mochitest_valgrind')
def target_tasks_valgrind(full_task_graph, parameters):
    """Target tasks that only run on the cedar branch."""
    def filter(task):
        platform = task.attributes.get('test_platform').split('/')[0]
        if platform not in ['linux64']:
            return False

        if task.attributes.get('unittest_suite', '').startswith('mochitest') and \
           task.attributes.get('unittest_flavor', '').startswith('valgrind-plain'):
            return True
        return False

    return [l for l, t in full_task_graph.tasks.iteritems() if filter(t)]


@_target_task('nightly_code_coverage')
def target_tasks_code_coverage(full_task_graph, parameters):
    """Target tasks that generate coverage data."""
    def filter(task):
        platform = task.attributes.get('test_platform').split('/')[0]
        if platform not in ('linux64-ccov', 'linux64-jsdcov'):
            return False
        return True
    return [l for l, t in full_task_graph.tasks.iteritems() if filter(t)]


@_target_task('nightly_fennec')
def target_tasks_nightly_fennec(full_task_graph, parameters):
    """Select the set of tasks required for a nightly build of fennec. The
    nightly build process involves a pipeline of builds, signing,
    and, eventually, uploading the tasks to balrog."""
    def filter(task):
        platform = task.attributes.get('build_platform')
        if platform in ('android-api-15-nightly', 'android-x86-nightly', 'android-nightly'):
            if not task.attributes.get('nightly', False):
                return False
            return filter_for_project(task, parameters)
    return [l for l, t in full_task_graph.tasks.iteritems() if filter(t)]


@_target_task('nightly_linux')
def target_tasks_nightly_linux(full_task_graph, parameters):
    """Select the set of tasks required for a nightly build of linux. The
    nightly build process involves a pipeline of builds, signing,
    and, eventually, uploading the tasks to balrog."""
    def filter(task):
        platform = task.attributes.get('build_platform')
        if platform in ('linux64-nightly', 'linux-nightly'):
            return task.attributes.get('nightly', False)
    return [l for l, t in full_task_graph.tasks.iteritems() if filter(t)]


@_target_task('mozilla_beta_tasks')
def target_tasks_mozilla_beta(full_task_graph, parameters):
    """Select the set of tasks required for a promotable beta or release build
    of linux, plus android CI. The candidates build process involves a pipeline
    of builds and signing, but does not include beetmover or balrog jobs."""

    def filter(task):
        if not standard_filter(task, parameters):
            return False
        platform = task.attributes.get('build_platform')
        if platform in ('linux64-pgo', 'linux-pgo', 'win32-pgo', 'win64-pgo',
                        'android-api-15-nightly', 'android-x86-nightly',
                        'win32', 'win64', 'macosx64'):
            return False
        if platform in ('linux64', 'linux'):
            if task.attributes['build_type'] == 'opt':
                return False
        # skip l10n, beetmover, balrog
        if task.kind in [
            'balrog', 'beetmover', 'beetmover-checksums', 'beetmover-l10n',
            'checksums-signing', 'nightly-l10n', 'nightly-l10n-signing',
            'push-apk', 'push-apk-breakpoint',
        ]:
            return False
        return True

    return [l for l, t in full_task_graph.tasks.iteritems() if filter(t)]


@_target_task('mozilla_release_tasks')
def target_tasks_mozilla_release(full_task_graph, parameters):
    """Select the set of tasks required for a promotable beta or release build
    of linux, plus android CI. The candidates build process involves a pipeline
    of builds and signing, but does not include beetmover or balrog jobs."""
    return target_tasks_mozilla_beta(full_task_graph, parameters)


@_target_task('candidates_fennec')
def target_tasks_candidates_fennec(full_task_graph, parameters):
    """Select the set of tasks required for a candidates build of fennec. The
    nightly build process involves a pipeline of builds, signing,
    and, eventually, uploading the tasks to balrog."""
    filtered_for_project = target_tasks_nightly_fennec(full_task_graph, parameters)

    def filter(task):
        if task.kind not in ['balrog']:
            return task.attributes.get('nightly', False)

    return [l for l in filtered_for_project if filter(full_task_graph[l])]


@_target_task('pine_tasks')
def target_tasks_pine(full_task_graph, parameters):
    """Bug 1339179 - no mobile automation needed on pine"""
    def filter(task):
        platform = task.attributes.get('build_platform')
        # disable mobile jobs
        if str(platform).startswith('android'):
            return False
        # disable asan
        if platform == 'linux64-asan':
            return False
        # disable non-pine and nightly tasks
        if standard_filter(task, parameters):
            return True
    return [l for l, t in full_task_graph.tasks.iteritems() if filter(t)]


@_target_task('stylo_tasks')
def target_tasks_stylo(full_task_graph, parameters):
    """Target stylotasks that only run on the m-c branch."""
    def filter(task):
        platform = task.attributes.get('build_platform')
        # only select platforms
        if platform not in ('linux64-stylo'):
            return False
        return True
    return [l for l, t in full_task_graph.tasks.iteritems() if filter(t)]


# nightly_linux should be refactored to be nightly_all once
# https://bugzilla.mozilla.org/show_bug.cgi?id=1267425 dependent bugs are
# implemented
@_target_task('nightly_macosx')
def target_tasks_nightly_macosx(full_task_graph, parameters):
    """Select the set of tasks required for a nightly build of macosx. The
    nightly build process involves a pipeline of builds, signing,
    and, eventually, uploading the tasks to balrog."""
    def filter(task):
        platform = task.attributes.get('build_platform')
        if platform in ('macosx64-nightly', ):
            return task.attributes.get('nightly', False)
    return [l for l, t in full_task_graph.tasks.iteritems() if filter(t)]