#!/usr/bin/env bash

# Installs or uninstalls webapps based on the spec in the './webapps' directory.
#
# This is used when setting up a new machine.

script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd)"

if [ -z "$DEV_ENV" ]; then
  echo "env var DEV_ENV needs to be present"
  exit 1
fi

if [ -z "$XDG_DATA_HOME" ]; then
  echo "no xdg data home"
  echo "using ~/.local/share"
  XDG_DATA_HOME=~/.local/share
fi

grep=""
dry_run="0"
uninstall="0"

while [[ $# -gt 0 ]]; do
  echo "ARG: \"$1\""

  # Handle a --dry or --dry-run argument
  if [[ "$1" =~ ^--dry ]]; then
    dry_run="1"
  # Handle an --uninstall argument
  elif [[ "$1" =~ ^--u ]]; then
    uninstall="1"
  # Handle an --install argument (default)
  elif [[ ! "$1" =~ ^--i ]]; then
    grep="$1"
  fi
  shift
done

log() {
  if [[ $dry_run == "1" ]]; then
    echo "[DRY_RUN]: $1"
  else
    echo "$1"
  fi
}

install() {
  local file=$(cat $1)
  local script="${script_dir}/env/.local/scripts/install-webapp"

  if [[ ! -x $script ]]; then
    log "Failed to find install web app script."
    exit 1
  fi

  # Install local icons if needed
  mkdir -p $XDG_DATA_HOME/applications/icons
  for i in $(find $script_dir/assets/icons -mindepth 1 -maxdepth 1 -type f); do
    if [[ ! -f $XDG_DATA_HOME/applications/icons/$i ]] && [[ $dry_run == "0" ]]; then
      cp $i $XDG_DATA_HOME/applications/icons
    fi
  done

  log "Installing webapp from spec: $1"

  if [[ $dry_run == "0" ]]; then
    $script \
      --name $(echo $file | jq -r '.name') \
      --url $(echo $file | jq -r '.url') \
      --icon $(echo $file | jq -r '.icon') \
      --exec $(echo $file | jq -r '.exec') \
      --mime-types $(echo $file | jq -r '.mime_types')
  fi
}

uninstall() {
  local file=$(cat $1)
  local script="${script_dir}/env/.local/scripts/uninstall-webapp"

  if [[ ! -x $script ]]; then
    log "Failed to find uninstall web app script."
    exit 1
  fi

  log "Uninstalling webapp from spec: $1"

  if [[ $dry_run == "0" ]]; then
    $script $(echo $file | jq -r '.name')
  fi
}

############################## MAIN ##############################

log "WEBAPP: -- grep: $grep"

apps_dir=$(find $script_dir/webapps -mindepth 1 -maxdepth 1 -type f)

for s in $apps_dir; do
  if basename $s | grep -vq "$grep"; then
    log "grep \"$grep\" filtered out $s"
    continue
  fi

  if [[ $uninstall == "1" ]]; then
    uninstall $s
  else
    install $s
  fi
done