# ~/.bash_functions - Custom bash functions

# Create a directory and change to it
mkcd() {
    mkdir -p "$1" && cd "$1"
}

# Find file by name
ff() {
    find . -type f -name "*$1*" -print
}

# Extract most archive types
extract() {
    if [ -f "$1" ]; then
        case "$1" in
            *.tar.bz2)   tar xjf "$1"     ;;
            *.tar.gz)    tar xzf "$1"     ;;
            *.bz2)       bunzip2 "$1"     ;;
            *.rar)       unrar e "$1"     ;;
            *.gz)        gunzip "$1"      ;;
            *.tar)       tar xf "$1"      ;;
            *.tbz2)      tar xjf "$1"     ;;
            *.tgz)       tar xzf "$1"     ;;
            *.zip)       unzip "$1"       ;;
            *.Z)         uncompress "$1"  ;;
            *.7z)        7z x "$1"        ;;
            *)           echo "'$1' cannot be extracted via extract()" ;;
        esac
    else
        echo "'$1' is not a valid file"
    fi
}

# Show top processes by memory usage
memtop() {
    ps axo %mem,pid,euser,cmd | sort -nr | head "${1:-10}"
}

# Show top processes by CPU usage
cputop() {
    ps axo %cpu,pid,euser,cmd | sort -nr | head "${1:-10}"
}

# Simple HTTP server in current directory
serve() {
    local port="${1:-8000}"
    python -m SimpleHTTPServer "$port" 2>/dev/null || python3 -m http.server "$port"
}

# Get external IP address
myip() {
    curl -s https://ipinfo.io/ip
}

# Backup a file with timestamp
backup() {
    cp "$1" "$1.$(date +%Y%m%d-%H%M%S).bak"
}

# Search command history
hist() {
    history | grep "$1"
}

# Generate a random password
genpass() {
    local length="${1:-16}"
    tr -dc 'A-Za-z0-9!#$%&()*+,-./:;<=>?@[\]^_`{|}~' </dev/urandom | head -c "$length"; echo
}