#!/usr/bin/env bash

# For generic functions.

ips ()
{
    # about display all ip addresses for this host
    ifconfig | grep "inet " | awk '{ print $2 }'
}

down4me ()
{
    # about checks whether a website is down for you, or everybody
    # param 1: website url
    example $ down4me http://www.google.com
    curl -s "http://www.downforeveryoneorjustme.com/$1" | sed '/just you/!d;s/<[^>]*>//g'
}

myip ()
{
    # about displays your ip address, as seen by the Internet
    res=$(curl -s checkip.dyndns.org | grep -Eo '[0-9\.]+')
    echo -e "Your public IP is: ${echo_bold_green} $res ${echo_normal}"
}


pickfrom ()
{
    # about picks random line from file
    # param 1: filename
    # example $ pickfrom /usr/share/dict/words
    local file=$1
    [ -z "$file" ] && reference $FUNCNAME && return
    length=$(cat $file | wc -l)
    n=$(expr $RANDOM \* $length \/ 32768 + 1)
    head -n $n $file | tail -1
}

pass ()
{
    # about generates random password from dictionary words
    # param optional integer length
    # param if unset, defaults to 4
    # example $ pass
    # example $ pass 6
    local i pass length=${1:-4}
    pass=$(echo $(for i in $(eval echo "{1..$length}"); do pickfrom /usr/share/dict/words; done))
    echo "With spaces (easier to memorize): $pass"
    echo "Without (use this as the pass): $(echo $pass | tr -d ' ')"
}

pmdown ()
{
    # about preview markdown file in a browser
    # param 1: markdown file
    # example $ pmdown README.md
    if command -v markdown &>/dev/null
    then
      markdown $1 | browser
    else
      echo "You don't have a markdown command installed!"
    fi
}

mkcd ()
{
    # about make a directory and cd into it
    # param path to create
    # example $ mkcd foo
    # example $ mkcd /tmp/img/photos/large
    mkdir -p "$*"
    cd "$*"
}

lsgrep ()
{
    # about search through directory contents with grep
    ls | grep "$*"
}


pman ()
{
    # about view man documentation in Preview
    # param 1: man page to view
    # example $ pman bash
    man -t "${1}" | open -f -a $PREVIEW
}


pcurl ()
{
    # about download file and Preview it
    # param 1: download URL
    # example $ pcurl http://www.irs.gov/pub/irs-pdf/fw4.pdf
    curl "${1}" | open -f -a $PREVIEW
}

pri ()
{
    # about display information about Ruby classes, modules, or methods, in Preview
    # param 1: Ruby method, module, or class
    # example $ pri Array
    ri -T "${1}" | open -f -a $PREVIEW
}

quiet ()
{
    $* &> /dev/null &
}

banish-cookies ()
{
    # about redirect .adobe and .macromedia files to /dev/null
    rm -r ~/.macromedia ~/.adobe
    ln -s /dev/null ~/.adobe
    ln -s /dev/null ~/.macromedia
}

usage ()
{
    # about disk usage per directory, in Mac OS X and Linux
    # param 1: directory name
    if [ $(uname) = "Darwin" ]; then
        if [ -n $1 ]; then
            du -hd $1
        else
            du -hd 1
        fi

    elif [ $(uname) = "Linux" ]; then
        if [ -n $1 ]; then
            du -h --max-depth=1 $1
        else
            du -h --max-depth=1
        fi
    fi
}

t ()
{
    # about one thing todo
    # param if not set, display todo item
    # param 1: todo text
    if [[ "$*" == "" ]] ; then
        cat ~/.t
    else
        echo "$*" > ~/.t
    fi
}

command_exists ()
{
    # about checks for existence of a command
    # param 1: command to check
    # example $ command_exists ls && echo 'exists'
    type "$1" &> /dev/null ;
}

plugins-help ()
{
    # about list all plugins and functions defined by bash-it
    echo "bash-it Plugins Help-Message"
    echo

    set | grep "()" \
    | sed -e "/^_/d" | grep -v "BASH_ARGC=()" \
    | sed -e "/^\s/d" | grep -v "BASH_LINENO=()" \
    | grep -v "BASH_ARGV=()" \
    | grep -v "BASH_SOURCE=()" \
    | grep -v "DIRSTACK=()" \
    | grep -v "GROUPS=()" \
    | grep -v "BASH_CMDS=()" \
    | grep -v "BASH_ALIASES=()" \
    | grep -v "COMPREPLY=()" | sed -e "s/()//"
}

# useful for administrators and configs
buf ()
{
    # about back up file with timestamp
    # param filename
    local filename=$1
    local filetime=$(date +%Y%m%d_%H%M%S)
    cp ${filename} ${filename}_${filetime}
}