#!/usr/bin/env zsh
# Eryn Wells <eryn@erynwells.me>

autoload -Uz binary_exists

if binary_exists sw_vers && [[ -n "$HWMODEL" && -n "$OSVERSION" && -n "$OSBUILD" ]]; then
    cat_program=cat
    if binary_exists lolcat; then
        cat_program=lolcat
    fi

    local hello_message="It's `date +'%H:%M on %A, %B %d'`."

    if [[ -n "$HWMODEL" ]]; then
        hello_message+="\nThis machine is a $HWMODEL."
    fi

    if [[ -n "$OSVERSION" ]]; then
        if [[ -n "$OSBUILD" ]]; then
            hello_message+="\nYou're running macOS $OSVERSION ($OSBUILD)."
        else
            hello_message+="\nYou're running macOS $OSVERSION."
        fi
    fi

    print "$hello_message\n" | $cat_program

    return 0
fi

return 1