install.sh

#!/bin/bash

safe_type() {
    type $1 > /dev/null 2>&1
}

check_curl() {
    if ! safe_type curl ; then
        echo "The 'curl' utility is required. Please install with your package manager."
        exit 100
    fi
}
check_curl

if [ -d "$HOME/bin" ]; then
    HOMEBIN="$HOME/bin"
fi
if [ -d "$HOME/.local/bin" ]; then
    HOMEBIN="$HOME/.local/bin"
fi

if [ -d "$HOMEBIN" ] && [[ ":$PATH:" == *":$HOME/bin:"* ]]; then
    DEFAULT_FOLDER=$HOMEBIN
    DEFAULT_PROMPT=" (default $HOMEBIN)"
fi    

for i in $(echo "${PATH//:/$'\n'}" | sort | uniq) ; do
    if [ ! "$i" = "." ] && [ ! "$i" = ".." ] && [ -d "$i" ] && [ -w "$i" ]; then
        if [ -z "$WRPATH" ]; then
            WRPATH=$i
        else
            WRPATH="$WRPATH:$i"
        fi
    fi
done

while [ -z "$SELECTED_FOLDER" ]; do
    echo "Where would you like to install the alpha command?"
    echo "================================================================="
    echo "Listed below are writable folders in your PATH. If you would"
    echo "like to install it somewhere else, please add that folder to your"
    echo "PATH."
    echo

    ct=0
    default_index=0
    for i in $(echo "${WRPATH//:/$'\n'}") ; do
        echo "  " $ct\) $i
        ct=$(($ct + 1))
    done
    echo 
    read -e -p "Folder name$DEFAULT_PROMPT? " FOLDER
    SELECTED_FOLDER=${FOLDER:-$DEFAULT_FOLDER}

    if [ ! -z "$FOLDER" ]; then
        ct=0
        for i in $(echo "${WRPATH//:/$'\n'}") ; do
            if [ "$ct" = "$FOLDER" ] ; then
                SELECTED_FOLDER="$i"
                break
            fi
            ct=$(($ct + 1))
        done
    fi

    SELECTED_FOLDER=${SELECTED_FOLDER%/}
    
    if [ ! -d "$SELECTED_FOLDER" ]; then
        echo "The selected folder does not exist. Please create the folder in run again."
        exit 1;
    fi
    if [ ! -w "$SELECTED_FOLDER" ]; then
        echo "The selected folder is not writable. Please modify the permissions or choose another folder."
        exit 1;
    fi
done

if [[ ":$PATH:" != *":$SELECTED_FOLDER:"* ]]; then
    echo "Warning: $SELECTED_FOLDER is not in path."
    echo "To execute the command, you'll need to run using the full path:"
    echo "-->  $SELECTED_FOLDER/alpha login"
    echo
fi

ALPHA_DEST=$SELECTED_FOLDER/alpha

if [ -f "$ALPHA_DEST" ]; then
    echo "Found existing installation at $ALPHA_DEST. Will update."
fi 

echo "Fetching alpha command..."
if curl -s -o "$ALPHA_DEST" "https://raw.githubusercontent.com/Alpha-Drive/alpha-command/master/alpha"; then
    chmod +x "$ALPHA_DEST"
    if safe_type alpha ; then
        echo "The alpha command is ready to run."
    else
        echo "Something went wrong with the download."
    fi
else
    echo "Curl of command file failed."
fi