#!/bin/sh

# ZODIAC - a simple static site generator
# Copyright (c) 2011 Chase Allen James <nx-zodiac@nu-ex.com>

ZODLIB=ZODLIB_PATH

proj=$1
target=$2

if [ -z "$1" ] || [ -z "$2" ]; then
  echo "usage: zod projectdir targetdir"
  exit
fi

if [ ! -e $proj ]; then
  echo "error: project directory does not exist"
  exit
fi

if [ ! -e $target ]; then
  echo "error: target directory does not exist"
  exit
fi


helpers=$proj/helpers.awk
if [ -e $helpers ]; then
  helper_opts="-f `pwd`/$helpers"
fi

global_meta=$proj/global.meta
if [ -e $global_meta ]; then
  global_meta_opts=$global_meta
fi

layout=$proj/main.layout
if [ -e $layout ]; then
  layout_opts=$layout
fi

files=$(find $proj -type f ! -name "*.layout" ! -name "*.meta" ! -name "*.awk")
for f in $files; do
  dir=$(dirname $f)

  # Find the target directory if one must be created
  # Start by pulling the project directory out of the filepath
  # with awk and then removing the filename with sed
  targetdir=$(awk "BEGIN { split(\"$f\",a,\"$proj/\"); print a[2] }" | sed "s/`basename $f`//")
  targetpath=$target/$targetdir
  if [ ! -z "$targetdir" ]; then
    mkdir -p $target/$targetdir
  else
    # There is no directory to create in target,
    # i.e. file is in the root of the project
    targetpath=$target
  fi

  file_basename=$(basename $f)
  file_extension=$(echo $file_basename | awk -F . '{print $NF}') 
  file_name=$(echo $file_basename | sed -e 's/\.md//' -e 's/\.html//')

  # If the file's extension wasn't replaced (i.e. same as basename) then
  # we know it isn't a template.
  if [ $file_name != $file_basename ]; then

    if [ -e $dir/$file_name.meta ]; then
      page_meta_opts=$dir/$file_name.meta
    fi

    awk -f $ZODLIB/render.awk \
        -v AWKLIB="$ZODLIB" \
        $helper_opts \
        $global_meta_opts \
        $page_meta_opts \
        $f \
        $layout_opts > $targetpath/$file_name.html

  else
    cp $f $targetpath # Copying a non-template file
  fi
done