.functions

#!/usr/bin/env bash

# Check if executable exists
is_executable() {
  type "$1" >/dev/null 2>&1
}

# Add to path
prepend-path() {
  [ -d $1 ] && PATH="$1:$PATH"
}

# Switch long/short prompt
ps0() {
  PS1="\[\033[38;5;226m\]"
  PS1+='$ '
}
ps1() {
  source "$DOTFILES_DIR"/.prompt
}

if [ "$(uname)" == "Darwin" ]; then #macOS
  source "$DOTFILES_DIR/functions_macos"
elif [ "$(expr substr $(uname -s) 1 5)" == "Linux" ]; then #Linux
  source "$DOTFILES_DIR/functions_linux"
fi

# thefuck
## Temporarily disable thefuck for significant performance of .bash_profile
# eval $(thefuck --alias)

# random_saved_wallpaper
rsw() {
  img_name=$(ls $WALLPAPER_DIR | sort -R | tail -n 1)
  echo ${WALLPAPER_DIR}/${img_name}
  $(set_wallpaper)
}

# random_unsplash_wallpaper
ruw() {
  $(get_and_save_wallpaper)
  img_name=$(ls -t $WALLPAPER_DIR | head -n 1)
  $(set_wallpaper)
}

# Downlaod a wallpaper from unsplash and rename it
get_and_save_wallpaper() {
  set_resolution
  wget_output=$(wget --trust-server-names -nv -P $WALLPAPER_DIR "https://source.unsplash.com/featured/$display_resolution?wallpaper/$RANDOM" 2>&1) # download file and set wget_output from stderr
  rename_wallpaper
}

# Rename wallpaper downloaded from Unsplash Source API. wget returns a filename with query parameters, this functions strips these query params
rename_wallpaper() {
  IFS=' '                            # set delimiter to space
  read -ra strings <<<"$wget_output" # extract words from name to array
  current_name=$(echo "${strings[5]}" | tr -d '"')
  img_name=$(echo "${strings[5]}" | tr -d '"' | cut -d'?' -f1)".jpg" # echo $split_name
  mv $current_name $img_name
}

# delete_unsplash_wallpaper
duw() {
  img_name=$(ls -t $WALLPAPER_DIR | head -n 1)
  rm -rf ${WALLPAPER_DIR}/${img_name}
}

# Fix common issues with random_unsplash_wallpaper
fix_random_unsplash_wallpaper() {
  if [ ! -d $WALLPAPER_DIR ]; then
    echo $WALLPAPER_DIR
    mkdir -p $WALLPAPER_DIR
  fi
}