mix

#!/bin/bash
RED=$(tput setaf 1)
GREEN=$(tput setaf 2)
YELLOW=$(tput setaf 3)
NC='\033[0m' # No Color

# Usage:
# m      → mix help
# m a    → mix archive
# m h    → mix hex
# m a.b  → mix archive.build
# m d.co → mix deps.compile
# m p.n  → mix phoenix.new
function m {
  if [ "$1" == "refresh" ]; then
    mix help | grep ^mix | awk '{ print $2 }' | sed "s/#//" | grep -v help | grep . | awk '{ print length, $0 }' | sort -n -s | cut -d" " -f2- > ~/.mix_tasks
  elif [ ! -f ~/.mix_tasks ]; then
    m refresh
    m $@
    printf "\nCreated ${YELLOW}~/.mix_tasks${NC}...\n\n"
    printf "Use shortcuts:\n"
    printf "  ${YELLOW}m a${NC} → ${GREEN}mix archive${NC}\n"
    printf "  ${YELLOW}m d.co${NC} → ${GREEN}mix deps.compile${NC}\n"
  elif [ -z "$1" ] || [ "$1" == "help" ]; then
    mix help | sed "s/^/\\${GREEN}/" | sed "s/#/\\${NC}/" | xargs -0 printf
  else
    local commands=`cat ~/.mix_tasks`
    if [[ $1 =~ \..+\. ]]; then
      local shortcut=(${1//./ })
      while read -r line; do
        if [[ $line =~ \..+\. ]] ; then
          local cmd=(${line//./ })
          if [[ ${cmd[0]} == ${shortcut[0]}* ]] && [[ ${cmd[1]} == ${shortcut[1]}* ]] && [[ ${cmd[2]} == ${shortcut[2]}* ]]; then
            shift
            printf "${YELLOW}mix $line $@${NC}\n"
            mix $line $@
            return
          fi
        fi
      done <<< "$commands"
    elif [[ $1 =~ \. ]]; then
      local shortcut=(${1//./ })
      while read -r line; do
        if [[ $line =~ \. ]] ; then
          local cmd=(${line//./ })
          if [[ ${cmd[0]} == ${shortcut[0]}* ]] && [[ ${cmd[1]} == ${shortcut[1]}* ]]; then
            shift
            printf "${YELLOW}mix $line $@${NC}\n"
            mix $line $@
            return
          fi
        fi
      done <<< "$commands"
    else
      while read -r line; do
        if [[ $line == $1* ]]; then
          shift
          printf "${YELLOW}mix $line $@${NC}\n"
          mix $line $@
          return
        fi
      done <<< "$commands"
    fi
    local new_commands=`mix help | grep ^mix | awk '{ print $2 }' | sed "s/#//" | grep -v help | grep .`
    local added=false
    while read -r line; do
      if ! printf '%s\n\0' "${commands[@]}" | grep -Fqx $line
      then
        if ! $added ; then
          printf "Adding to ${YELLOW}~/.mix_tasks${NC} for shortcut resolution:\n"
        fi
        added=true
        printf "Added ${GREEN}$line${NC}\n"
        echo $line >> ~/.mix_tasks
      fi
    done <<< "$new_commands"
    if [ $added == true ]; then
      cat ~/.mix_tasks | awk '{ print length, $0 }' | sort -n -s | cut -d" " -f2- > ~/._mix_tasks
      mv ~/._mix_tasks ~/.mix_tasks
      m $@
    else
      printf "${RED}Task not found${NC}\n"
    fi
  fi
}

_mix()
{
    local cur prev opts
    COMPREPLY=()
    cur="${COMP_WORDS[COMP_CWORD]}"
    prev="${COMP_WORDS[COMP_CWORD-1]}"
    opts=`mix help | grep ^mix | awk '{ print $2 }' | sed "s/#//" | grep -v help | grep .`

    COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
    return 0
}
complete -F _mix m
complete -F _mix mix