#!/bin/bash

#/ NAME
#/     edit-gem -- set environment to hint to Gemfile to use a local gemspec
#/
#/ SYNOPSIS
#/     edit gem <name> [location]
#/     edit gem -r <names>
#/     edit gem -R

# figure out the project root under which bin, lib live
shome="$(cd -P -- "$(dirname -- "$BASH_SOURCE")/.." && pwd -P)"

# load a jason bourne library
source "$shome/libexec/_jason"

# define command line options:
DEFINE_boolean "update" "$FLAGS_FALSE" "finish editing a local gem and updates project" "u"
DEFINE_boolean "reset" "$FLAGS_FALSE" "reset gem to remote" "r"
DEFINE_boolean "resetall" "$FLAGS_FALSE" "reset all gems to remote" "R"

# entry point
function main {
  if [[ "$FLAGS_resetall" = "$FLAGS_TRUE" ]]; then
    set +f
    rm -f $shome/.local/*
    set -f
    bundle --local --quiet && bundle check > /dev/null
    git diff --no-ext-diff Gemfile.lock vendor/cache
  elif [[ "$FLAGS_reset" = "$FLAGS_TRUE" ]]; then
    local nm_gem
    for nm_gem in "$@"; do
      rm -f "$shome/.local/$nm_gem"
    done

    bundle --local --quiet && bundle check > /dev/null

    git diff --no-ext-diff Gemfile.lock vendor/cache
  elif [[ "$FLAGS_update" = "$FLAGS_TRUE" ]]; then
    local nm_gem
    for nm_gem in "$@"; do
      echo -n > "$shome/.local/$nm_gem"
    done

    bundle update "$@"

    for nm_gem in "$@"; do
      rm -f "$shome/.local/$nm_gem"
    done
    bundle --local --quiet && bundle check > /dev/null

    git add Gemfile.lock vendor/cache
    git add -u vendor/cache
    git diff --no-ext-diff --cached Gemfile.lock vendor/cache
  else
    local nm_gem="$1"; shift

    local pth_gem
    if [[ "$#" = 0 ]]; then
      pth_gem="gems/$nm_gem"
    else
      pth_gem="$1"; shift
    fi
    
    if [[ ! -d "$pth_gem" ]]; then
      logger_fatal "cannot find local gem directoy at $pth_gem"
      exit 1
    fi

    pth_gem="$(cd -P -- "$pth_gem" && pwd -P)"

    echo "enabling local gem development on ${nm_gem} at ${pth_gem}"
    mkdir -p "$shome/.local"
    echo "$pth_gem" > "$shome/.local/$nm_gem"

    bundle --local --quiet && bundle check > /dev/null
    git diff --no-ext-diff Gemfile.lock vendor/cache
  fi
}

require sub "$BASH_SOURCE" "$@"