#!/usr/bin/env python3
# A script to invoke mkdocs with the correct environment.
# Additionally supports deploying via mike:
#   ./mkdocs deploy [mike-deploy-options]

import errno, os, shutil, sys
from subprocess import call

support_dir = os.path.dirname(os.path.normpath(__file__))
build_dir = os.path.join(os.path.dirname(support_dir), 'build')

# Set PYTHONPATH for the mkdocstrings handler.
env = os.environ.copy()
path = env.get('PYTHONPATH')
env['PYTHONPATH'] = \
  (path + ':' if path else '') + os.path.join(support_dir, 'python')

config_path = os.path.join(support_dir, 'mkdocs.yml')
args = sys.argv[1:]
if len(args) > 0:
  command = args[0]
  if command == 'deploy':
    git_url = 'https://github.com/' if 'CI' in os.environ else 'git@github.com:'
    site_repo = git_url + 'fmtlib/fmt.dev.git'

    site_dir = os.  path.join(build_dir, 'fmt.dev')
    try:
      shutil.rmtree(site_dir)
    except OSError as e:
      if e.errno == errno.ENOENT:
        pass
    ret = call(['git', 'clone', '--depth=1', site_repo, site_dir])
    if ret != 0:
      sys.exit(ret)

    # Copy the config to the build dir because the site is built relative to it.
    config_build_path = os.path.join(build_dir, 'mkdocs.yml')
    shutil.copyfile(config_path, config_build_path)

    sys.exit(call(['mike'] + args + ['--config-file', config_build_path,
                   '--branch', 'master'], cwd=site_dir, env=env))
  elif not command.startswith('-'):
    args += ['-f', config_path]
sys.exit(call(['mkdocs'] + args, env=env))