#!/usr/bin/env bash

 
 # **info.sh**
 

 # Produce a report on the state of DevStack installs

 #
 # Output fields are separated with '|' chars
 # Output types are git,localrc,os,pip,pkg:

 #

 #   git|<project>|<branch>[<shaq>]

 #   localrc|<var>=<value>

 #   os|<var>=<value>
 #   pip|<package>|<version>
 #   pkg|<package>|<version>
 
 function usage {

     echo "$0 - Report on the DevStack configuration"

     echo ""
     echo "Usage: $0"
     exit 1
 }
 
 if [ "$1" = "-h" ]; then
     usage
 fi
 
 # Keep track of the current directory
 TOOLS_DIR=$(cd $(dirname "$0") && pwd)
 TOP_DIR=$(cd $TOOLS_DIR/..; pwd)
 cd $TOP_DIR
 

 # Import common functions
 source $TOP_DIR/functions
 

 # Source params
 source $TOP_DIR/stackrc
 
 DEST=${DEST:-/opt/stack}
 FILES=$TOP_DIR/files
 if [[ ! -d $FILES ]]; then
     echo "ERROR: missing devstack/files - did you grab more than just stack.sh?"
     exit 1
 fi
 

 
 # OS
 # --
 
 # Determine what OS we're using
 GetDistro
 
 echo "os|distro=$DISTRO"
 echo "os|vendor=$os_VENDOR"
 echo "os|release=$os_RELEASE"
 

 # Repos
 # -----
 
 # git_report <dir>

 function git_report {

     local dir=$1
     local proj ref branch head
     if [[ -d $dir/.git ]]; then
         pushd $dir >/dev/null
         proj=$(basename $dir)
         ref=$(git symbolic-ref HEAD)
         branch=${ref##refs/heads/}
         head=$(git show-branch --sha1-name $branch | cut -d' ' -f1)
         echo "git|${proj}|${branch}${head}"
         popd >/dev/null
     fi
 }
 
 for i in $DEST/*; do
     if [[ -d $i ]]; then
         git_report $i
     fi
 done
 
 
 # Packages
 # --------
 

 # - Only check packages for the services enabled
 # - Parse version info from the package metadata, not the package/file names

 for p in $(get_packages $ENABLED_SERVICES); do

     if [[ "$os_PACKAGE" = "deb" ]]; then
         ver=$(dpkg -s $p 2>/dev/null | grep '^Version: ' | cut -d' ' -f2)

     elif [[ "$os_PACKAGE" = "rpm" ]]; then

         ver=$(rpm -q --queryformat "%{VERSION}-%{RELEASE}\n" $p)

     else
         exit_distro_not_supported "finding version of a package"

     fi

     echo "pkg|${p}|${ver}"
 done
 

 # Pips
 # ----
 

 CMD_PIP=$(get_pip_command)

 
 # Pip tells us what is currently installed
 FREEZE_FILE=$(mktemp --tmpdir freeze.XXXXXX)

 $CMD_PIP freeze >$FREEZE_FILE 2>/dev/null

 
 # Loop through our requirements and look for matches

 while read line; do

     if [[ -n "$line" ]]; then
         if [[ "$line" =~ \+(.*)@(.*)#egg=(.*) ]]; then
             # Handle URLs
             p=${BASH_REMATCH[1]}
             ver=${BASH_REMATCH[2]}
         elif [[ "$line" =~ (.*)[=\<\>]=(.*) ]]; then
             # Normal pip packages
             p=${BASH_REMATCH[1]}
             ver=${BASH_REMATCH[2]}
         else
             # Unhandled format in freeze file
             continue
         fi
         echo "pip|${p}|${ver}"
     else
         # No match in freeze file
         continue
     fi

 done <$FREEZE_FILE

 
 rm $FREEZE_FILE
 

 # localrc
 # -------
 
 # Dump localrc with 'localrc|' prepended and comments and passwords left out
 if [[ -r $TOP_DIR/localrc ]]; then

     RC=$TOP_DIR/localrc
 elif [[ -f $RC_DIR/.localrc.auto ]]; then
     RC=$TOP_DIR/.localrc.auto
 fi
 if [[ -n $RC ]]; then

     sed -e '

         /^[ \t]*$/d;
         /PASSWORD/s/=.*$/=\<password\>/;

         /^#/d;
         s/^/localrc\|/;

     ' $RC

 fi