#!/usr/bin/env python3

import os
from pathlib import Path
import shutil
from subprocess import run
import sys
import textwrap
import time
import click
from collections import namedtuple
from urllib.parse import quote


def shell(cmd, **kwargs):
    return run([cmd], shell=True, **kwargs)


def git_repo_has_changes():
    unstaged_changes = shell('git diff-index --quiet HEAD --').returncode != 0
    staged_changes = shell('git diff-index --quiet --cached HEAD --').returncode != 0
    return unstaged_changes or staged_changes


def generate_basic_project(path):
    sys.path.insert(0, '')
    from test.test_projects.c import new_c_project

    project = new_c_project()
    project.generate(path)


CIService = namedtuple('CIService', 'name src_config_path dst_config_path badge_md')
services = [
    CIService(
        name='appveyor',
        src_config_path='examples/appveyor-minimal.yml',
        dst_config_path='appveyor.yml',
        badge_md='[![Build status](https://ci.appveyor.com/api/projects/status/wbsgxshp05tt1tif/branch/{branch}?svg=true)](https://ci.appveyor.com/project/joerick/cibuildwheel/branch/{branch})',
    ),
    CIService(
        name='azure-pipelines',
        src_config_path='examples/azure-pipelines-minimal.yml',
        dst_config_path='azure-pipelines.yml',
        badge_md='[![Build Status](https://dev.azure.com/joerick0429/cibuildwheel/_apis/build/status/joerick.cibuildwheel?branchName={branch})](https://dev.azure.com/joerick0429/cibuildwheel/_build/latest?definitionId=2&branchName={branch})',
    ),
    CIService(
        name='circle-ci',
        src_config_path='examples/circleci-minimal.yml',
        dst_config_path='.circleci/config.yml',
        badge_md='[![CircleCI](https://circleci.com/gh/joerick/cibuildwheel/tree/{branch_escaped}.svg?style=svg)](https://circleci.com/gh/joerick/cibuildwheel/tree/{branch})',
    ),
    CIService(
        name='github',
        src_config_path='examples/github-minimal.yml',
        dst_config_path='.github/workflows/example.yml',
        badge_md='[![Build](https://github.com/joerick/cibuildwheel/workflows/Build/badge.svg?branch={branch})](https://github.com/joerick/cibuildwheel/actions)',
    ),
    CIService(
        name='travis-ci',
        src_config_path='examples/travis-ci-minimal.yml',
        dst_config_path='.travis.yml',
        badge_md='[![Build Status](https://travis-ci.org/joerick/cibuildwheel.svg?branch={branch})](https://travis-ci.org/joerick/cibuildwheel)',
    ),
    CIService(
        name='gitlab',
        src_config_path='examples/gitlab-minimal.yml',
        dst_config_path='.gitlab-ci.yml',
        badge_md='[![Gitlab](https://gitlab.com/joerick/cibuildwheel/badges/{branch}/pipeline.svg)](https://gitlab.com/joerick/cibuildwheel/-/commits/{branch})'
    ),
]


@click.command()
def run_example_ci_configs():
    if git_repo_has_changes():
        print('Your git repo has uncommitted changes. Commit or stash before continuing.')
        exit(1)

    previous_branch = shell('git rev-parse --abbrev-ref HEAD',
                            check=True,
                            capture_output=True,
                            encoding='utf8').stdout.strip()

    timestamp = time.strftime('%Y-%m-%dT%H-%M-%S', time.gmtime())
    branch_name = f'example-config-test---{previous_branch}-{timestamp}'

    try:
        shell(f'git checkout --orphan {branch_name}', check=True)

        example_project = Path('example_root')
        generate_basic_project(example_project)

        for service in services:
            src_config_file = Path(service.src_config_path)
            dst_config_file = example_project / service.dst_config_path

            dst_config_file.parent.mkdir(parents=True, exist_ok=True)
            shutil.copyfile(src_config_file, dst_config_file)

        run(['git', 'add', example_project], check=True)
        run(['git', 'commit', '-m', textwrap.dedent(f'''
            Test example minimal configs

            Testing files: {[s.src_config_path for s in services]}
            Generated from branch: {previous_branch}
            Time: {timestamp}
        ''')], check=True)
        shell(f'git subtree --prefix={example_project} push origin {branch_name}', check=True)

        print('---')
        print()
        print('> **Examples test run**')
        print('> ')
        print(f'> Branch: [{branch_name}](https://github.com/joerick/cibuildwheel/tree/{branch_name})')
        print('> ')
        print('> | Service | Config | Status |')
        print('> |---|---|---|')
        for service in services:
            badge = service.badge_md.format(branch=branch_name, branch_escaped=quote(branch_name, safe=''))
            print(f'> | {service.name} | `{service.src_config_path}` | {badge} |')
        print('> ')
        print('> Generated by `bin/run_example_ci_config.py`')
        print()
        print('---')
    finally:
        # remove any local changes
        shutil.rmtree(example_project, ignore_errors=True)
        shell('git checkout -- .')
        shell(f'git checkout {previous_branch}', check=True)
        shell(f'git branch -D --force {branch_name}', check=True)


if __name__ == '__main__':
    os.chdir(os.path.dirname(__file__))
    os.chdir('..')
    run_example_ci_configs(standalone_mode=True)