#!/bin/bash
# TypeCodes Git Synchronous Script v1.0.0
# (c) 2015 vfhky https://typecodes.com/linux/gitsynbackupshell.html


Source_DB_Dir=/mydata/backups/data/mysql
Source_PRG_Dir=/mydata/backups/data/typecodes
Git_Err_Log_Dir=/mydata/backups/logs/git

# Coding.net
CodingNet_DB_Dir=/mydata/GitBang/CodingNet/myblog/db
CodingNet_PRG_Dir=/mydata/GitBang/CodingNet/myblog/program

# BitBucket.org
BitBucket_Dir=/mydata/GitBang/BitBucket/myblog/db
BitBucket_PRG_Dir=/mydata/GitBang/BitBucket/myblog/program

# GitHub.com
GitHub_Dir=/mydata/GitBang/GitHub/myblog/db
GitHub_PRG_Dir=/mydata/GitBang/GitHub/myblog/program

# Get the newest file name
#Newest_File="ls -lrt| tail -n 1 | awk '{print $9}'"

# Space separated list of databases
PRGNAME="Git_Synchronous"

# Current date format: e.g 20150505_2015
Current_Date=`date +%Y%m%d_%H%M`

function USAGE() {
cat << EOF
usage: $0 options

This script synchronize the backup files to BitBucket, GitHub and Coding.

OPTIONS:
  -h    Show this message
  -n    Number of days to keep backups
EOF
}

while getopts "hal:n:" opt; do
  case $opt in
    a)
      PRGNAME=""
      ;;
    h)
      USAGE
      exit 1
      ;;
    l)
      PRGNAME="$OPTARG"
      ;;
    n)
      NUMDAYS=$OPTARG
      ;;
    \?)
      USAGE
      exit
      ;;
    :)
      echo "Option -$OPTARG requires an argument." >&2
      exit 1
      ;;
  esac
done

function ERROR() {
  echo && echo "[error] $@" >> $Git_Err_Log_Dir/Git_$Current_Date.log
  exit 1
}

function NOTICE() {
  echo && echo "[notice] $@" >> $Git_Err_Log_Dir/Git_$Current_Date.log
}

function RUNCMD() {
  echo $@ >> $Git_Err_Log_Dir/Git_$Current_Date.log
  eval $@
}

# Git commit command function
function Git_Commit(){
  if [ $# -ne 0 -a $# -ne 1 ]; then
    ERROR "Usage: Git_Commit or Git_Commit file_path!"
    exit 1;
  elif [ $# -lt 1 ]; then
    RUNCMD git pull && git add --all && git commit -m "Backup from TypeCodes.com [Time:$Current_Date]" && git push origin master
  else
    RUNCMD git pull && git add $1 && git commit -m "Backup from TypeCodes.com [Time:$Current_Date]" && git push origin master
  fi
}

# $1:path  $2:filter file-type
function Get_last_file(){
  if [ $# -ne 1 -a $# -ne 2 ]; then
    ERROR "Usage: Get_last_file file_path or Get_last_file file_path file_type!"
    exit 1;
  elif [ $# -lt 2 ]; then
    ls -lrt $1 | tail -n 1 | awk '{print $9}'
  else
    ls -lrt $1 | awk "/$2/" | tail -n 1 | awk '{print $9}'
  fi
}

if [ ! -d $Git_Err_Log_Dir ]; then
  mkdir -p $Git_Err_Log_Dir
fi


NOTICE "Start copy the db_file to git index"
RC=0
Last_Source_DB_File=$(Get_last_file $Source_DB_Dir)
RUNCMD "cd $Source_DB_Dir && \cp -rf $Last_Source_DB_File $CodingNet_DB_Dir && \cp -rf $Last_Source_DB_File $BitBucket_Dir && \cp -rf $Last_Source_DB_File $GitHub_Dir"

RC=$?
if [ $RC -gt 0 ]; then
  ERROR "Copy db_file failed!"
fi

NOTICE "Start copy the program_file to git index"
Last_Program_DB_File=$(Get_last_file $Source_PRG_Dir)
RUNCMD "cd $Source_PRG_Dir && \cp -rf $Last_Program_DB_File $CodingNet_PRG_Dir && \cp -rf $Last_Program_DB_File $BitBucket_PRG_Dir && \cp -rf $Last_Program_DB_File $GitHub_PRG_Dir"

RC=$?
if [ $RC -gt 0 ]; then
  ERROR "Copy program_file failed!"
fi

NOTICE "Start push to CodingNet"
RUNCMD "cd $CodingNet_PRG_Dir && tar -zxf $(Get_last_file $CodingNet_PRG_Dir .tar.gz) && cd ../ && Git_Commit"

NOTICE "Start push to BitBucket"
RUNCMD "cd $BitBucket_PRG_Dir && tar -zxf $(Get_last_file $BitBucket_PRG_Dir .tar.gz) && cd ../ && Git_Commit"

NOTICE "Start push to GitHub"
RUNCMD "cd $GitHub_PRG_Dir && tar -zxf $(Get_last_file $GitHub_PRG_Dir .tar.gz) && cd ../ && Git_Commit"

# exit 0