#!/bin/bash

# Default programs:
export BROWSER=firefox
export EDITOR=vim
export FILE=ranger
export IMAGES=feh
export PAGER=less
export TERMINAL=kitty
export VISUAL=code

# Misc vars
export CHROME_EXECUTABLE=chromium # For Flutter

# Set XDG directories:
export XDG_CACHE_HOME="${XDG_CACHE_HOME:-$HOME/.cache}"
export XDG_CONFIG_HOME="${XDG_CONFIG_HOME:-$HOME/.config}"
export XDG_DATA_HOME="${XDG_DATA_HOME:-$HOME/.local/share}"

# Clean home:
export ANDROID_HOME="$XDG_DATA_HOME/Android/Sdk"
export CARGO_HOME="$XDG_DATA_HOME/cargo"
export KREW_ROOT="$XDG_DATA_HOME/krew"
export FLUTTER_HOME="$XDG_DATA_HOME/flutter"
export GOPATH="$XDG_DATA_HOME/go"
export HISTFILE="$XDG_DATA_HOME/history"
export XINITRC="$XDG_CONFIG_HOME/x11/xinitrc"
export ZDOTDIR="$XDG_CONFIG_HOME/zsh"
export NVM_DIR="$XDG_CONFIG_HOME/nvm"
export NUGET_PACKAGES="$XDG_DATA_HOME/nuget"

# Color man pages:
export LESS=-r
export LESS_TERMCAP_mb=$'\E[01;32m'
export LESS_TERMCAP_md=$'\E[01;32m'
export LESS_TERMCAP_me=$'\E[0m'
export LESS_TERMCAP_se=$'\E[0m'
export LESS_TERMCAP_so=$'\E[01;47;34m'
export LESS_TERMCAP_ue=$'\E[0m'
export LESS_TERMCAP_us=$'\E[01;36m'

# Other program settings:
export DISPLAY_DPI=96

# Remove an entry from PATH
rm_path_entry() {
    local shell="${SHELL##*/}" rm_entry="${1:?Entry not set}" new_path path_arr

    if [[ "$shell" == "zsh" ]]; then
        IFS=" " read -A path_arr <<<"${PATH//:/ }"
    else
        IFS=" " read -a path_arr <<<"${PATH//:/ }"
    fi

    for path_entry in "${path_arr[@]}"; do
        grep -Eq "^$rm_entry$" <<<"$path_entry" && continue
        new_path="$new_path:$path_entry"
    done

    PATH="${new_path#:}"
}

# Remove one or more entries from PATH
rm_path_entries() {
    local rm_entry

    for rm_entry in "$@"; do
        rm_path_entry "$rm_entry"
    done
}

# Prepend one or more entries to PATH.
# The order of the supplied args will be kept, e.g. PATH="$1:$2:$PATH"
prepend_path_with_entries() {
    local addl_paths entry

    for entry in "$@"; do
        ! [ -d "$entry" ] && continue
        addl_paths="$addl_paths:$entry"
    done

    PATH="${addl_paths#:}:$PATH"
}

# Append one or more entries to PATH.
# The order of the supplied args will be kept, e.g. PATH="$PATH:$1:$2"
append_path_with_entries() {
    local addl_paths entry

    for entry in "$@"; do
        ! [ -d "$entry" ] && continue
        addl_paths="$addl_paths:$entry"
    done

    PATH="$PATH:${addl_paths#:}"
}

prepend_paths=(
    "$HOME/.local/bin"
    "$HOME/.cargo/bin"
    "$FLUTTER_HOME/bin"
    "$GOPATH/bin"
    "$KREW_ROOT/bin"
)
append_paths=()

HOMEBREW_PREFIX="$XDG_DATA_HOME/homebrew"
if [ -x "$HOMEBREW_PREFIX/bin/brew" ]; then
    eval "$("$HOMEBREW_PREFIX/bin/brew" shellenv)"
    append_paths+=("$HOMEBREW_PREFIX/bin" "$HOMEBREW_PREFIX/sbin")
fi

rm_path_entries "${prepend_paths[@]}" "${append_paths[@]}" # Ensure we clean up first
prepend_path_with_entries "${prepend_paths[@]}"
append_path_with_entries "${append_paths[@]}"

# Add the profile-extras file yourself if you wish to override anything:
PROFILE_EXTRAS="$XDG_CONFIG_HOME/shell/profile-extras"
[ -f "$PROFILE_EXTRAS" ] && . "$PROFILE_EXTRAS"