#!/usr/bin/env bash
#
# Install the Spectre CLI tool.
set -e
cd "${BASH_SOURCE%/*}"
source bashlib

inf "This will install the spectre tool."

# Try to guess then ask for the bin dir to install to.
IFS=: read -a paths <<< "$PATH"
if inArray ~/bin "${paths[@]}"; then
    bindir=~/bin
elif inArray ~/.bin "${paths[@]}"; then
    bindir=~/.bin
elif inArray /usr/local/bin "${paths[@]}"; then
    bindir=/usr/local/bin
else
    bindir=~/bin
fi
bindir=$(ask -d "$bindir" "What bin directory should I install to?")
[[ -d "$bindir" ]] || mkdir "$bindir" || ftl 'Cannot create missing bin directory: %s' "$bindir" || exit
[[ -w "$bindir" ]] || ftl 'Cannot write to bin directory: %s' "$bindir" || exit

# Install Spectre.
install -m555 spectre "$bindir"
[[ ! -e "$bindir/bashlib" ]] && install bashlib "$bindir" ||:

# Convenience bash function.
inf "Installation successful!"
echo

inf "To improve usability, you can install an spectre function in your bash shell."
inf "This function adds the following features:"
inf "  - Automatically remember your user name in the shell if not set."
inf "  - Automatically put the password in the clipboard (some platforms)."
echo
inf "To do this you need the following function in ~/.bashrc:\n%s" "$(<spectre.bashrc)"
echo
inf "We can do this for you automatically now."
if ask -c Y!n "Append the spectre function to your .bashrc?"; then
    cat spectre.bashrc >> ~/.bashrc
    inf "Done!  Don't forget to run '%s' to apply the changes!" "source ~/.bashrc"
fi
echo

inf "You can also save your user name in ~/.bashrc.  Leave blank to skip this step."
if SPECTRE_USERNAME=$(ask "Your full name:") && [[ $SPECTRE_USERNAME ]] ; then
    printf 'export SPECTRE_USERNAME=%q\n' "$SPECTRE_USERNAME" >> ~/.bashrc
fi
inf "If you have an askpass program you'd like to use, you can specify it here."
inf "An askpass program provides a graphical interface for entering things like your personal secret."
inf "Leave blank to skip this step and enter passwords using the terminal."
if [[ ! $SPECTRE_ASKPASS ]] && hash ssh-askpass 2>/dev/null; then
    SPECTRE_ASKPASS=ssh-askpass
fi
if SPECTRE_ASKPASS=$(ask +"$SPECTRE_ASKPASS" "askpass program:") && [[ $SPECTRE_ASKPASS ]] ; then
    printf 'export SPECTRE_ASKPASS=%q\n' "$SPECTRE_ASKPASS" >> ~/.bashrc
fi
echo

inf "Shell features installed."
inf "To load these convenience features into your already running shell, type: source ~/.bashrc"
inf "To begin using Spectre, type: spectre -h or spectre my-site-name"