#!/bin/bash

function parse_yaml {
   local s='[[:space:]]*' w='[a-zA-Z0-9_]*' fs=$(echo @|tr @ '\034')
   sed -ne "s|^\($s\):|\1|" \
        -e "s|^\($s\)\($w\)$s:$s[\"']\(.*\)[\"']$s\$|\1$fs\2$fs\3|p" \
        -e "s|^\($s\)\($w\)$s:$s\(.*\)$s\$|\1$fs\2$fs\3|p"  $@ |
   awk -F$fs '{
      indent = length($1)/2;
      vname[indent] = $2;
      for (i in vname) {if (i > indent) {delete vname[i]}}
      if (length($3) > 0) {
         vn=""; for (i=0; i<indent; i++) {vn=(vn)(vname[i])("_")}
         printf("%s%s:%s\n", vn, $2, $3);
      }
   }'
}

function generate_replacement {
    awk -F: '{
        VAL[$1] = $2;
    }
    END {
        for (key in VAL) {
            printf "-e '\''s/\\\$%s\\\$/%s/'\'' ", key, VAL[key];
        }
    }' $@
}

params=$(parse_yaml <<EOF
color:
  bg:       #424F60
  line:     #CED6DE
  dark:     #28343F
  light:    #60748B
  note:
    bg:     #FBFCA8
    line:   #BBBC88
font:
  main:     DejaVu Serif
  note:     DejaVu Serif
EOF

<<EOF
color:
  bg:       #111111
EOF)

replacement_params=$(generate_replacement <(echo "$params"))
eval "find ./ -type f -name uml.skin -exec sed -i '' $replacement_params {} \;"