From d7f28e0260233c852f7df01537a9807a9c789538 Mon Sep 17 00:00:00 2001
From: Clementine Urquizar <clementine@meilisearch.com>
Date: Wed, 27 Nov 2019 11:27:14 +0100
Subject: [PATCH] Add script for binary installation

---
 download-latest.sh | 129 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 129 insertions(+)
 create mode 100644 download-latest.sh

diff --git a/download-latest.sh b/download-latest.sh
new file mode 100644
index 000000000..fb6acb4af
--- /dev/null
+++ b/download-latest.sh
@@ -0,0 +1,129 @@
+#!/bin/sh
+
+# COLORS
+RED="\033[31m"
+GREEN="\033[32m"
+DEFAULT="\033[0m"
+
+# GLOBALS
+REGEXP_SEMVER='v[^0-9]*\([0-9]*\)[.]\([0-9]*\)[.]\([0-9]*\)\([0-9A-Za-z-]*\)'
+BINARY_NAME='meilisearch'
+
+# semverParseInto and semverLT from https://github.com/cloudflare/semver_bash/blob/master/semver.sh
+
+# usage: semverParseInto version major minor patch special
+# version: the string version
+# major, minor, patch, special: will be assigned by the function
+semverParseInto() {
+    local RE='[^0-9]*\([0-9]*\)[.]\([0-9]*\)[.]\([0-9]*\)\([0-9A-Za-z-]*\)'
+    #MAJOR
+    eval $2=`echo $1 | sed -e "s#$RE#\1#"`
+    #MINOR
+    eval $3=`echo $1 | sed -e "s#$RE#\2#"`
+    #MINOR
+    eval $4=`echo $1 | sed -e "s#$RE#\3#"`
+    #SPECIAL
+    eval $5=`echo $1 | sed -e "s#$RE#\4#"`
+}
+
+# usage: semverLT version1 version2
+semverLT() {
+    local MAJOR_A=0
+    local MINOR_A=0
+    local PATCH_A=0
+    local SPECIAL_A=0
+
+    local MAJOR_B=0
+    local MINOR_B=0
+    local PATCH_B=0
+    local SPECIAL_B=0
+
+    semverParseInto $1 MAJOR_A MINOR_A PATCH_A SPECIAL_A
+    semverParseInto $2 MAJOR_B MINOR_B PATCH_B SPECIAL_B
+
+    if [ $MAJOR_A -lt $MAJOR_B ]; then
+        return 0
+    fi
+    if [ $MAJOR_A -le $MAJOR_B ] && [ $MINOR_A -lt $MINOR_B ]; then
+        return 0
+    fi
+    if [ $MAJOR_A -le $MAJOR_B ] && [ $MINOR_A -le $MINOR_B ] && [ $PATCH_A -lt $PATCH_B ]; then
+        return 0
+    fi
+    if [ "_$SPECIAL_A"  == "_" ] && [ "_$SPECIAL_B"  == "_" ] ; then
+        return 1
+    fi
+    if [ "_$SPECIAL_A"  == "_" ] && [ "_$SPECIAL_B"  != "_" ] ; then
+        return 1
+    fi
+    if [ "_$SPECIAL_A"  != "_" ] && [ "_$SPECIAL_B"  == "_" ] ; then
+        return 0
+    fi
+    if [ "_$SPECIAL_A" < "_$SPECIAL_B" ]; then
+        return 0
+    fi
+
+    return 1
+}
+
+success_usage() {
+    printf "$GREEN%s\n$DEFAULT" "MeiliSearch binary successfully downloaded as '$BINARY_NAME' file."
+    echo ''
+    echo 'Run it:'
+    echo '    $ ./meilisearch'
+    echo 'Usage:'
+    echo '    $ ./meilisearch --help'
+}
+
+failure_usage() {
+    printf "$RED%s\n$DEFAULT" 'ERROR: MeiliSearch binary is not available for your OS distribution yet.'
+    echo ''
+    echo 'However, you can easily compile the binary from the source files.'
+    echo 'Follow the steps on the docs: https://docs.meilisearch.com/advanced_guides/binary.html#how-to-compile-meilisearch'
+}
+
+# OS DETECTION
+echo 'Detecting OS distribution...'
+os_name=$(uname -s)
+if [ "$os_name" != "Darwin" ]; then
+    os_name=$(cat /etc/os-release | grep '^ID=' | tr -d '"' | cut -d '=' -f 2)
+fi
+echo "OS distribution detected: $os_name"
+case "$os_name" in
+'Darwin')
+    os='macos'
+    ;;
+'ubuntu' | 'debian')
+    os='linux'
+    ;;
+*)
+    failure_usage
+    exit 1
+esac
+
+# GET LATEST VERSION
+tags=$(curl -s 'https://api.github.com/repos/meilisearch/MeiliSearch/tags' \
+    | grep "$REGEXP_SEMVER" \
+    | grep 'name' \
+    | tr -d '"' | tr -d ',' | cut -d 'v' -f 2)
+
+latest=""
+for tag in $tags; do
+    if [ "$latest" = "" ]; then
+        latest="$tag"
+    else
+        semverLT $tag $latest
+        if [ $? -eq 1 ]; then
+            latest="$tag"
+        fi
+    fi
+done
+
+# DOWNLOAD THE LATEST
+echo "Downloading MeiliSearch binary v$latest for $os..."
+release_file="meilisearch-$os-amd64"
+link="https://github.com/meilisearch/MeiliSearch/releases/download/v$latest/$release_file"
+curl -OL "$link"
+mv "$release_file" "$BINARY_NAME"
+chmod 744 "$BINARY_NAME"
+success_usage