# Copyright (C) 2013 The Android Open Source Project
#
# 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.

def genasciidoc_htmlonly(
    name,
    out,
    srcs = [],
    attributes = [],
    backend = None,
    searchbox = True,
    visibility = []):
  EXPN = '.' + name + '_expn'

  asciidoc = [
      '$(exe //lib/asciidoctor:asciidoc)',
      '-z', '$OUT',
      '--base-dir', '$SRCDIR',
      '--tmp', '$TMP',
      '--in-ext', '".txt%s"' % EXPN,
      '--out-ext', '".html"',
  ]
  if backend:
    asciidoc.extend(['-b', backend])
  for attribute in attributes:
    asciidoc.extend(['-a', attribute])
  asciidoc.append('$SRCS')
  newsrcs = [":doc.css"]
  for src in srcs:
    fn = src
    # We have two cases: regular source files and generated files.
    # Generated files are passed as targets ':foo', and ':' is removed.
    # 1. regular files: cmd = '-s foo', srcs = ['foo']
    # 2. generated files: cmd = '-s $(location :foo)', srcs = []
    srcs = [src]
    passed_src = fn
    if fn.startswith(':') :
      fn = src[1:]
      srcs = []
      passed_src = '$(location :%s)' % fn
    ex = fn + EXPN

    genrule(
      name = ex,
      cmd = '$(exe :replace_macros) --suffix="%s"' % EXPN +
        ' -s ' + passed_src + ' -o $OUT' +
        (' --searchbox' if searchbox else ' --no-searchbox'),
      srcs = srcs,
      out = ex,
    )

    # The new AsciiDoctor requires both the css file and include files are under
    # the same directory. Luckily Buck allows us to use :target as SRCS now.
    newsrcs.append(':%s' % ex)

  genrule(
    name = name,
    cmd = ' '.join(asciidoc),
    srcs = newsrcs,
    out = out,
    visibility = visibility,
  )

def genasciidoc(
    name,
    out,
    docdir,
    srcs = [],
    attributes = [],
    backend = None,
    searchbox = True,
    visibility = []):
  SUFFIX = '_htmlonly'

  genasciidoc_htmlonly(
    name = name + SUFFIX,
    srcs = srcs,
    attributes = attributes,
    backend = backend,
    searchbox = searchbox,
    out = name + SUFFIX + '.zip',
  )

  genrule(
    name = name,
    cmd = 'cd $TMP;' +
      'mkdir -p %s/images;' % docdir +
      'unzip -q $(location %s) -d %s/;'
      % (':' + name + SUFFIX, docdir) +
      'for s in $SRCS;do ln -s $s %s;done;' % docdir +
      'mv %s/*.{jpg,png} %s/images;' % (docdir, docdir) +
      'cp $(location %s) LICENSES.txt;' % ':licenses.txt' +
      'zip -qr $OUT *',
    srcs = glob([
        'images/*.jpg',
        'images/*.png',
      ]) + [
        ':doc.css',
        '//gerrit-prettify:prettify.min.css',
        '//gerrit-prettify:prettify.min.js',
      ],
    out = out,
    visibility = visibility,
  )