Legit install helper script

Makefile

@@ -1,6 +1,10 @@
 SHELL=/bin/bash
 
 
+autoinstall: 
+	./install_helper.sh
+
+
 build: submodules resh-collect resh-daemon
 
 

install.sh

@@ -1,45 +0,0 @@
-#!/usr/bin/env bash
-
-if ! go version &>/dev/null; then
-    echo "Please install Golang and rerun this script"
-    exit 1 
-fi
-
-go_version=$(go version | cut -d' ' -f3)
-go_version_major=$(echo "${go_version:2}" | cut -d'.' -f1)
-go_version_minor=$(echo "${go_version:2}" | cut -d'.' -f2)
-
-# install_dep.sh installs to /tmp/gopath/bin
-# add it to path just in case
-PATH=/tmp/gopath/bin:$PATH
-
-if [ "$go_version_major" -gt 1 ]; then
-    # good to go - future proof ;)
-    echo "Building & installing ..."
-    make install
-elif [ "$go_version_major" -eq 1 ] && [ "$go_version_minor" -ge 11 ]; then
-    # good to go - we have go modules
-    echo "Building & installing ..."
-    make install
-elif dep version &>/dev/null; then
-    if ! dep init; then
-        echo "\`dep init\` failed - bootstraping GOPATH ..."
-        export GOPATH=$(mktemp /tmp/gopath-XXX)
-        project_path=$GOPATH/src/github.com/curusarn/resh
-        mkdir -p "$project_path"
-        cp -rf . "$project_path"
-        cd "$project_path"
-        if ! dep init; then
-            echo "Unexpected ERROR while running \`dep init\`!"
-            echo "Try running \`make install\`"
-            exit 3
-        fi
-        echo "Succesfuly bootstraped GOPATH"
-    fi
-    echo "Building & installing ..."
-    make install
-else
-    echo "Please update your Golang to version >= 1.11 OR install dep and rerun this script"
-    echo "If you have trouble installing dep you can run \`./install_dep.sh\` in this directory"
-    exit 2
-fi

install_dep.sh

@@ -1,5 +0,0 @@
-#!/usr/bin/env bash
-
-export GOPATH=/tmp/gopath
-mkdir $GOPATH/bin
-curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh

install_helper.sh

@@ -0,0 +1,83 @@
+#!/usr/bin/env bash
+
+if ! go version &>/dev/null; then
+    echo "Please INSTALL GOLANG and run this again"
+    exit 1 
+fi
+
+go_version=$(go version | cut -d' ' -f3)
+go_version_major=$(echo "${go_version:2}" | cut -d'.' -f1)
+go_version_minor=$(echo "${go_version:2}" | cut -d'.' -f2)
+
+if [ "$go_version_major" -gt 1 ]; then
+    # good to go - future proof ;)
+    echo "Building & installing ..."
+    make install
+elif [ "$go_version_major" -eq 1 ] && [ "$go_version_minor" -ge 11 ]; then
+    # good to go - we have go modules
+    echo "Building & installing ..."
+    make install
+else
+    echo
+    echo "==========================================================================="
+    echo "Your Golang version is older than 1.11 - we can't use go modules for build!"
+    echo "I will try to build the project using dep. (I will let you review each step.)"
+    echo "Continue? (Any key to continue / Ctrl+C to cancel)" 
+    read x
+
+    take_care_of_gopath=0
+    if [ -z "${GOPATH+x}" ]; then
+        echo
+        echo "==========================================================================="
+        echo "GOPATH env variable is unset!"
+        echo "I will take care of GOPATH. (I will create tmp GOPATH.)"
+        echo "Continue? (Any key to continue / Ctrl+C to cancel)" 
+        read x
+
+        GOPATH=$(mktemp -d /tmp/gopath-XXX) \
+            && mkdir "$GOPATH/bin" \
+            && echo "Created tmp GOPATH: $GOPATH"
+        export GOPATH
+        take_care_of_gopath=1
+    fi
+
+    echo "GOPATH=$GOPATH"
+    PATH=$GOPATH/bin:$PATH
+
+    if ! dep version &>/dev/null; then
+        echo
+        echo "==========================================================================="
+        echo "It appears that you don't have dep installed!"
+        echo "I will install dep. (I will install it from GitHub.)"
+        echo "Continue? (Any key to continue / Ctrl+C to cancel)" 
+        read x
+        
+        curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh
+        [ $? -eq 0 ] && echo "Installed dep."
+    fi
+
+    project_path=$GOPATH/src/github.com/curusarn/resh
+    mkdir -p "$project_path" &>/dev/null
+    if [ "$project_path" != "$PWD" ]; then
+        if [ "$take_care_of_gopath" -eq 0 ]; then
+            echo
+            echo "==========================================================================="
+            echo "It seems that current directory is not in the GOPATH!"
+            echo "I will copy the project to appropriate GOPATH directory."
+            echo "Continue? (Any key to continue / Ctrl+C to cancel)" 
+            read x
+        fi
+        cp -rf ./* "$project_path" && echo "Copied files to $project_path"
+        cd "$project_path"
+    fi
+
+    echo "Running \`dep ensure\` ..."
+    if ! dep ensure; then
+        echo "Unexpected ERROR while running \`dep ensure\`!"
+        exit 2
+    fi
+    echo
+    echo "==========================================================================="
+    echo "Building & installing ..."
+    make install
+fi