#!/usr/bin/env bash

fetch_command=$(which curl)
if [[ $? -ne 0 ]] ; then
  $rvm_scripts_path/log "fail" "rvm requires curl, which does not seem to exist in your path :("
  exit 1
else
  fetch_command="$fetch_command -O -L --create-dirs -C - " # -s for silent
fi

pushd "$rvm_archives_path" > /dev/null 2>&1

if [[ -z "$1" ]] ; then $rvm_scripts_path/log "fail" "BUG: $0 called without an argument :/" ; exit 1 ; fi

archive=$(basename "$1") ; downlaod=1

(( $rvm_debug_flag )) && $rvm_scripts_path/log "debug" "Fetching $archive"

# Check first if we have the correct archive
if [[ -e "$archive" ]] && [[ -e "$archive.md5" ]] ; then
  (( $rvm_debug_flag )) && $rvm_scripts_path/log "debug" "Found archive and its md5, testing correctness"
  if [[ $(md5sum --status -c "$archive.md5") -gt 0 ]] ; then
    (( $rvm_debug_flag )) && $rvm_scripts_path/log "debug" "Archive is bad, downloading"
    download=1
  else
    (( $rvm_debug_flag )) && $rvm_scripts_path/log "debug" "Archive is good, not downloading"
    download=0
    result=0
  fi
else
  (( $rvm_debug_flag )) && $rvm_scripts_path/log "debug" "No archive or no MD5, downloading"
  download=1
fi
if [[ $download -gt 0 ]] ; then
  eval $fetch_command "$1"
  result=$?
  if [[ $result -gt 0 ]] ; then
    retry=0
    if [[ $result -eq 78 ]] ; then
      $rvm_scripts_path/log "error" "The requested url does not exist: '$1'"
    elif [[ $result -eq 18 ]] ; then
      $rvm_scripts_path/log "error" "Partial file. Only a part of the file was transferred. Removing partial and re-trying."
      rm -f "$archive"
      retry=1
    elif [[ $result -eq 33 ]] ; then
      (( $rvm_debug_flag )) && $rvm_scripts_path/log "debug" "Server does not support 'range' command, removing '$archive'"
      rm -f "$archive"
      retry=1
    else
      $rvm_scripts_path/log "error" "There was an error, please check $rvm_ruby_log_path/*.error.log"
    fi

    if [[ $retry -eq 1 ]] ; then
      eval $fetch_command "$1"
      result=$?
      if [[ $result -gt 0 ]] ; then
        $rvm_scripts_path/log "error" "There was an error, please check $rvm_ruby_log_path/*.error.log"
      fi
    fi

  fi
  popd > /dev/null 2>&1
fi

exit $result