From 08a4bde6c1a004918f15ae825f0c72adbcde9462 Mon Sep 17 00:00:00 2001
From: Geoff Bourne <itzgeoff@gmail.com>
Date: Wed, 25 Nov 2020 15:42:27 -0600
Subject: [PATCH] Switched to PaperMC v2 API Fixes #670

---
 start-deployPaper | 79 +++++++++++++++++++++++++++--------------------
 1 file changed, 45 insertions(+), 34 deletions(-)

diff --git a/start-deployPaper b/start-deployPaper
index ebe6c958..16e80edb 100644
--- a/start-deployPaper
+++ b/start-deployPaper
@@ -4,43 +4,54 @@
 set -o pipefail
 isDebugging && set -x
 
-: ${PAPERBUILD:=latest}
-export SERVER=paper_server-${VANILLA_VERSION}-${PAPERBUILD}.jar
+# PaperMC API v2 docs : https://papermc.io/api/docs/swagger-ui/index.html?configUrl=/api/openapi/swagger-config
 
-if [ ! -f "$SERVER" ] || isTrue "$FORCE_REDOWNLOAD"; then
+build=$(curl -fsSL "https://papermc.io/api/v2/projects/paper/versions/${VANILLA_VERSION}" -H  "accept: application/json" \
+ | jq '.builds[-1]')
+case $? in
+  0)
+    ;;
+  22)
+    versions=$(curl -fsSL "https://papermc.io/api/v2/projects/paper" -H  "accept: application/json")
+    if [[ $VERSION = LATEST ]]; then
+        VANILLA_VERSION=$(echo "$versions" | jq -r '.versions[-1]')
+        log "WARN: using ${VANILLA_VERSION} since that's the latest provided by PaperMC"
+        # re-execute the current script with the newly computed version
+        exec $0 "$@"
+    fi
+    log "ERROR: ${VANILLA_VERSION} is not published by PaperMC"
+    log "       Set VERSION to one of the following: "
+    log "       $(echo "$versions" | jq -r '.versions | join(", ")')"
+    exit 1
+    ;;
+  *)
+    echo "ERROR: unknown error while looking up PaperMC version=${VANILLA_VERSION}"
+    exit 1
+    ;;
+esac
+if [ $? != 0 ]; then
+  echo "ERROR: failed to lookup PaperMC build from version ${VANILLA_VERSION}"
+  exit 1
+fi
 
-  if [ -f "$SERVER" ]; then
-    zarg=(-z "$SERVER")
-  fi
+export SERVER=$(curl -fsSL "https://papermc.io/api/v2/projects/paper/versions/${VANILLA_VERSION}/builds/${build}" -H  "accept: application/json" \
+ | jq -r '.downloads.application.name')
+if [ $? != 0 ]; then
+  echo "ERROR: failed to lookup PaperMC download file from version=${VANILLA_VERSION} build=${build}"
+  exit 1
+fi
 
-  downloadUrl=${PAPER_DOWNLOAD_URL:-https://papermc.io/api/v1/paper/${VANILLA_VERSION}/${PAPERBUILD}/download}
-  log "Downloading Paper $VANILLA_VERSION (build $PAPERBUILD) from $downloadUrl ..."
-  out=$(curl -fsSL -o "$SERVER" "${zarg[@]}" "$downloadUrl" 2>&1)
-  case $? in
-    0)
-      ;;
-    22) # = 404 HTTP status
-      if versions=$(curl -fsSL https://papermc.io/api/v1/paper 2> /dev/null); then
-        if [[ $VERSION = LATEST ]]; then
-          VANILLA_VERSION=$(echo $versions | jq -r '.versions[0]')
-          log "WARN: using ${VANILLA_VERSION} since that's the latest provided by PaperMC"
-          # re-execute the current script with the newly computed version
-          exec $0 "$@"
-        fi
-        log "ERROR: ${VANILLA_VERSION} is not (yet) published by PaperMC"
-        log "       Set VERSION to one of the following: "
-        log "       $(echo $versions | jq -r '.versions | join(", ")')"
-      else
-        log "ERROR: failed to retrieve versions from https://papermc.io/api/v1/paper"
-      fi
-      exit 3
-      ;;
-    *)
-      log "ERROR: failed to contact PaperMC at $downloadUrl"
-      log "       $out"
-      exit 3
-      ;;
-  esac
+if [ -f "$SERVER" ]; then
+  zarg=(-z "$SERVER")
+fi
+
+log "Downloading PaperMC $VANILLA_VERSION (build $build) ..."
+curl -fsSL -o "$SERVER" "${zarg[@]}" \
+  "https://papermc.io/api/v2/projects/paper/versions/${VANILLA_VERSION}/builds/${build}/downloads/${SERVER}" \
+  -H  "accept: application/java-archive"
+if [ $? != 0 ]; then
+  echo "ERROR: failed to download PaperMC from version=${VANILLA_VERSION} build=${build} download=${SERVER}"
+  exit 1
 fi
 
 # Normalize on Spigot for downstream operations