From 75f0b0c51c1642551aebd83a1601187cfe89d172 Mon Sep 17 00:00:00 2001
From: Bwko <bouwko@gmail.com>
Date: Wed, 25 Jan 2017 03:45:29 +0100
Subject: [PATCH] Added gogs migration script (#532)

---
 scripts/migrate/gogs_migrate.sh | 206 ++++++++++++++++++++++++++++++++
 1 file changed, 206 insertions(+)
 create mode 100755 scripts/migrate/gogs_migrate.sh

diff --git a/scripts/migrate/gogs_migrate.sh b/scripts/migrate/gogs_migrate.sh
new file mode 100755
index 000000000..e9bb5aa02
--- /dev/null
+++ b/scripts/migrate/gogs_migrate.sh
@@ -0,0 +1,206 @@
+#!/bin/bash
+
+gitea_version=1.0.1
+tested_gogs_version="0.9.114.1227"
+gogs_binary=gogs
+gitea_binary=gitea
+download_gitea=true
+gitea_path=
+
+function usage() { 
+  echo "Optional parameters: [-b Gitea binary] [-i Gitea install dir] [-o gogs binary] [-h help]";
+  exit 1; 
+}
+
+while getopts ":b::i:o:h:" opt; do
+  case $opt in
+    b)
+        gitea_binary=${OPTARG}
+        download_gitea=false
+      ;;
+    i)
+        gitea_path=${OPTARG}
+      ;;
+    o)
+        gogs_binary=${OPTARG}
+      ;;
+    h)
+       usage
+      ;;
+    \?)
+      echo -e "Invalid option: -$OPTARG" 
+      exit 1
+      ;;
+    :)
+      usage
+      exit 1
+      ;;
+  esac
+done
+
+function exitOnError() {
+  if [ "$?" != "0" ]; then
+      echo -e $1
+      exit 1
+  fi
+}
+
+function checkBinary() {
+  if [ ! -f $1 ]; then
+   echo "Unable to find $1"
+   exit 1
+  fi
+}
+
+function continueYN(){
+  while true; do
+    echo -e "$1 Yes or No"
+    read yn
+    case $yn in
+        [Yy]* ) break;;
+        [Nn]* ) exit 1;;
+        * )     echo "Please answer yes or no.";;
+    esac
+  done
+}
+
+########## Binary checks
+if pidof "$gogs_binary" >/dev/null; then
+ echo "Please stop gogs before migrating to Gitea"
+ exit 1
+fi
+
+checkBinary "$gogs_binary"
+
+if [ ! -x "$gogs_binary" ]; then
+ echo "Please make sure that you are running this script as the gogs user"
+ exit 1
+fi
+
+########## Version check
+gogs_version=$(./$gogs_binary --version)
+original_IFS=$IFS
+IFS="." && current_version=(${gogs_version#"Gogs version "}) && minimal_version=($tested_gogs_version)
+IFS=$original_IFS
+
+count=0
+for i in "${current_version[@]}" 
+do
+  if [ $i -gt ${minimal_version[$count]} ]; then
+   echo -e "!!!--WARNING--!!!\nYour $gogs_version is newer than the tested Gogs version $tested_gogs_version\nUse this script on your own risk\n!!!--WARNING--!!!"
+   break
+  fi
+  let count+=1
+done
+
+########## Disclaimer
+continueYN "This migration script creates a backup before it starts with the actual migration
+If something goes wrong you could always resotre this backup.
+The backups are stored into your gogs folder in gogs-dump-[timestamp].zip file
+
+Migrating from gogs to gitea, are you sure?"
+
+########## gogs dump
+echo "Creating a backup of gogs, this could take a while..."
+./"$gogs_binary" dump
+exitOnError "Failed to create a gogs dump"
+
+########## Create Gitea folder
+if [ -z "$gitea_path" ]; then
+  echo "Where do you want to install Gitea?"
+  read gitea_path 
+fi
+
+if [ ! -d "$gitea_path" ]; then
+  mkdir -p "$gitea_path"
+  exitOnError
+fi
+
+if [ "$(ls -A $gitea_path)" ]; then
+  continueYN "!!!--WARNING--!!!\nDirectory $gitea_path is not empty, do you want to continue?"
+fi
+
+
+########## Download Gitea
+if [ $download_gitea == true ]; then
+
+  ########## Detect os
+  case "$OSTYPE" in
+    darwin*)    platform="darwin-10.6";; 
+    linux*)     platform="linux" ;;
+    freebsd*)   platform="bsd" ;;
+    netbsd*)    platform="bsd" ;;
+    openbsd*)   platform="bsd" ;;
+    *)          echo "Unsupported os: $OSTYPE\n Please download/compile your own binary and run this script with the -b option" exit 1;;
+  esac
+
+  arch=""
+  bits=""
+  if [[ "$platform" == "linux" ]] || [[ "$platform" == "bsd" ]]; then
+    arch="$(uname -m | sed -e 's/arm\(.*\)/arm-\1/' -e s/aarch64.*/arm64/)"
+  fi
+
+  if [[ "$platform" == "bsd" ]] && [[ "$arch" != "arm"* ]]; then
+    echo "Currently Gitea only supports arm prebuilt binarys on bsd"
+    exit 1
+  fi
+
+  if [[ "$arch" != "arm"* ]] &&  [[ "$arch" != "mips"* ]]; then
+    arch=""
+    case "$(getconf LONG_BIT)" in
+      64*)  bits="amd64";; 
+      32*)  bits="386" ;;
+    esac
+  fi
+
+  ########## Wget Gitea
+  echo "Downloading Gitea"
+  file="gitea-$gitea_version-$platform-$arch$bits"
+  url="https://dl.gitea.io/gitea/$gitea_version/$file"
+  wget "$url" -P "$gitea_path"
+  exitOnError "Failed to download $url"
+
+  wget "$url.sha256" -P "$gitea_path"
+  exitOnError "Failed to Gitea checksum $url.sha256"
+
+  echo "Comparing checksums"
+  gogs_dir=$(pwd)
+  cd "$gitea_path"
+
+  sha256sum -c "$file.sha256"
+  exitOnError "Downloaded Gitea checksums do not match"
+
+  rm "$file.sha256"
+  mv "$file" gitea
+  cd "$gogs_dir"
+
+else
+  checkBinary "$gitea_binary"
+  if [ "$gitea_binary" != "$gitea_path/gitea" ];then
+    cp "$gitea_binary" "$gitea_path/gitea"
+  fi
+fi
+
+########## Copy gogs data to Gitea folder
+echo "Copying gogs data to Gitea, this could take a while..."
+cp -R custom "$gitea_path"
+cp -R data "$gitea_path"
+#cp -R conf "$gitea_path"
+
+########## Moving & deleting old files
+#mv $gitea_path/conf $gitea_path/options
+cd "$gitea_path"
+mv "custom/conf/app.ini" "custom/conf/gogs_app.ini"
+url="https://raw.githubusercontent.com/go-gitea/gitea/v$gitea_version/conf/app.ini"
+wget "$url" -P "custom/conf/"
+exitOnError "Unable to download Gitea app.ini"
+rm -f conf/README.md
+
+echo -e "Migration is almost complete, you only need to merge custom/conf/gogs_app.ini into custom/conf/app.ini"
+continueYN "Do you want to start Gitea?"
+
+########## Starting Gitea
+echo "Starting Gitea"
+chmod +x gitea
+./gitea web
+exitOnError "Failed to start Gitea"
\ No newline at end of file