#!/bin/sh

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

zod_lib=ZODLIB_PATH
markdown_filter_cmd="awk -f $zod_lib/markdown.awk"

proj=$1
target=$2

_zod_error() {
  echo -e ">>> ERROR: $*" >&2
  exit 1
}

[ ! "$1" ] || [ ! "$2" ] && { echo "usage: zod projectdir targetdir"; exit; }
[ ! -d $proj ] && _zod_error "project directory does not exist"
[ ! -d $target ] && _zod_error "target directory does not exist"

helpers=$proj/helpers.awk
[ -f $helpers ] && helper_opts="-f $(pwd)/$helpers"

global_meta=$proj/global.meta
[ -f $global_meta ] && global_meta_opts=$global_meta

layout=$proj/main.layout
[ -f $layout ] && layout_opts=$layout

files=$(find $proj -type f \
            ! -name "*.layout" \
            ! -name "*.meta" \
            ! -name "helpers.awk")

for f in $files; do

  # Find the target directory if one must be created
  subdir=${f%/*}
  subdir=${subdir#$proj}
  if [ "$subdir" ]; then
    destination="$target$subdir"
    mkdir -p "$destination"
  else
    # There is no directory to create in target,
    # i.e. file is in the root of the project
    destination=$target
  fi

  ext=${f##*.}
  if [ $ext == "md" ] || [ $ext == "html" ]; then

    meta=${f%.$ext}.meta
    [ -f $meta ] && page_meta_opts=$meta

    page=${f##*/}
    page=${page%.$ext}.html

    awk -f $zod_lib/render.awk \
        -v markdown_filter_cmd="$markdown_filter_cmd" \
        $helper_opts \
        "$global_meta_opts" \
        "$page_meta_opts" \
        "$f" \
        "$layout_opts" > "$destination/$page"

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