doc

#!/bin/env bash

exdir="$(dirname `readlink -f "$0"`)"

serve_port=8080
cmd=""

#--

help()
{
    echo "Usage: doc [options] command

    commands
        build     Generate docs documentation
        serve     Start webserver
        view      Open default app to view documentation
        commit    build + commit doc into docs branch        
        push      push docs branch to origin

    options
        [ -p | --port ]     specify serve port"

    exit 2
}

SHORT=p:,h:
LONG=port:,help
OPTS=$(getopt -a -n doc --options $SHORT --longoptions $LONG -- "$@")

VALID_ARGUMENTS=$# # Returns the count of arguments that are in short or long options

if [ "$VALID_ARGUMENTS" -eq 0 ]; then
  help
fi

eval set -- "$OPTS"

while :
do
  case "$1" in    
    -p | --port )
      serve_port=$2
      echo "port specified [$serve_port]"
      shift 2
      ;;    
    -h | --help)
      help
      ;;
    --)
      shift;
      break
      ;;
    *)
      echo "Unexpected option: $1"
      help
      ;;
  esac
done

#--[ build ]

if [ "$1" == "build" ]; then    
  rm -fr "$exdir"/docs   
  docfx "$exdir"/docfx.json
  exit 0
fi

#--[ serve ]

if [ "$1" == "serve" ]; then  
  docfx "$exdir"/docfx.json --serve -p $serve_port    
  exit 0
fi

#--[ view ]

if [ "$1" == "view" ]; then
  xdg-open http://localhost:$serve_port
fi

#--[ commit ]
DEFAULT_BRANCH=master
if [ "$1" == "commit" ]; then
  cd "$exdir"
  git stash push && \
  git checkout docs && \
  git merge $DEFAULT_BRANCH --commit --no-edit && \
  ./doc build && \
  git add -A docs && \
  git commit -a -m "doc" && \
  git checkout $DEFAULT_BRANCH && \
  git stash pop
fi

#--[ push ]
if [ "$1" == "push" ]; then
  cd "$exdir"
  git push origin docs
fi